BenQ Q7T4SM.rar

Monitor benq q7t4 i q7c3 schemat

W załączniku mówiąc dosłownie ' Q7T4-EP71G LCD Monitor Service Guide '

  • BenQ Q7T4SM.rar
    • BenQ Q7T4SM.pdf


Download file - link to post

BenQ Q7T4SM.rar > BenQ Q7T4SM.pdf

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure
1. Alignment procedure (for function adjustment)
A. Preparation:
1.

Setup input timing ICL-605( 1280x1024@75Hz ), 32-Grays pattern.

2.

Setup unit and keep it warm up at least 30 minutes.

B. Timing adjustment:
1. Enter factory setting area (press "ENTER", "EXIT" and then press "SOFTPOWER").
2. Check the settings to following values:
Contrast = 50
Brightness = 90
OSD time = 20
Color = Normal
Language = English
Then, turn off the monitor power.
3. Turn on power enter user area.

C. Color balance adjustment:
1. Enter factory setting area (press "ENTER", "I-Key" and then press "SOFTPOWER").
2. Setup input timing ICL-605(1280x1024@75Hz), 32-Gray pattern (pattern 48) .
3. Press "I-KEY", and than OSD will show "White Balance" item and than press "ENTER" button
to do auto color.

1
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

D. Color adjustment:
1. Setup input timing ICL-605, white pattern .
2. Confirm auto color adjustment had already done.
3. Measure color temperature by Minolta CA-110 (or equivalent equipment).
4. Check the color temperature Bluish, Reddish & Normal. The color temperature specification
as follows:
White Balance
(Bluish, 9300K set on OSD)

X+-

0.283+(-) 0.03

Y+-

0.297+(-) 0.03

White Balance
(Reddish, 5800K set on OSD)

X+-

0. 326+(-) 0.03

Y+-

0. 342+(-) 0.03

White Balance
(sRGB, 6500K set on OSD)

X+-

0.313+(-) 0.03

Y+-

0. 329 +(-) 0.03

2
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure
5. Setup input timing , 32 -Gray pattern.
To check if there are any abnormal display problems of preset timing modes .
No.
1
2
3
4
5
6
7
8
9
10

Check the following preset timings with General pattern:
Mode
H
720×400 @ 70Hz
31.468
640×480 @ 60Hz
31.469
640×480 @ 75Hz
37.500
800×600 @ 60Hz
37.879
800×600 @ 75Hz
46.875
1024×768 @ 60Hz
48.363
1024×768 @ 75Hz
60.023
1152x864 @ 75Hz
67.500
1280×1024 @ 60Hz
63.981
1280×1024 @ 75Hz
79.976

V
70.8
59.940
75.000
60.317
75.000
60.004
75.029
75.000
60.020
75.025

6. Checking if the picture is no good, reject this monitor.
7. To check the power consumption by disabling "burn-in mode" setting
8. To clear user data and program complete DDC data to monitor by IIC bus communication.
E. Writing EDID file:
1. Setup a PC with DDC card.
2. Connect PC to monitor with a D-sub signal cable.
3. Please refer to the C212 for the correct EDID file.
4. Runs the writing program to write the EDID file into EEPROM .
5. Read EEPROM data and confirm it to match with the C212 document definition.

F. Command definition :

PC Host will send 0x7C IIC slave address and then following 4 bytes command
I2C Send Command
Byte1 Byte2 Byte3 Byte4 OK N.A. Remark
Write Contrast to MCU RAM
Write Brightness to MCU RAM
Write Red Gain to MCU RAM
Write Green Gain to MCU RAM
Write Blue Gain to MCU RAM
Read Contrast from MCU RAM
Read Brightness from MCU RAM
Read Red Gain from MCU RAM by color index
Read Green Gain from MCU RAM by color
index
Read Blue Gain from MCU RAM by color index
Write C1 (Bluish) R-Gain Data to EEPROM
Write C1 (Bluish) G-Gain Data to EEPROM
Write C1 (Bluish) B-Gain Data to EEPROM
Write C2 (sRGB) R-Gain Data to EEPROM
Write C2 (sRGB) G-Gain Data to EEPROM
Write C2 (sRGB) B-Gain Data to EEPROM

CA
CA
CA
CA
CA
C3
C3
C3

55
56
57
58
59
55
56
57

Data
Data
Data
Data
Data
XX
XX
XX

cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum

?
?
?
?
?
?
?
?

C3
C3
AA
AA
AA
AA
AA
AA

58
59
3C
3D
3E
4C
4D
4E

XX
XX
Data
Data
Data
Data
Data
Data

cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum

?
?
?
?
?
?
?
?

Write data to MCU RAM and
update the related register to
refresh the screen immediately.
Don't store data to EEPROM.

Base on current color index to
read back the right gain value.

3
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure
Write C3 (Reddish) R-Gain Data to EEPROM
Write C3 (Reddish) G-Gain Data to EEPROM
Write C3 (Reddish) B-Gain Data to EEPROM
Write User R-Gain Data to EEPROM
Write User G-Gain Data to EEPROM
Write User B-Gain Data to EEPROM
Write Cx R-Gain Data to EEPROM
Write Cx G-Gain Data to EEPROM
Write Cx B-Gain Data to EEPROM
Write Contrast to EEPROM
Write Brightness to EEPROM

AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA

5C
5D
5E
6C
6D
6E
7C
7D
7E
92
93

Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data

cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum

?
?
?
?
?
?
?
?
?

Reserved for some model have
extra color temperature

?
?

1=C1/9300/Bluish,
2=C2/6500/sRGB/,
3=C3/5800/Reddish,
Write C/T index to EEPROM
Write OSD-Hpos to EEPROM
Write OSD-Vpos to EEPROM

AA
AA
AA

94
95
96

4=User, 5=Cx

0~4 cksum ?
Data cksum ?
Data cksum ?

0=DE, 1=EN, 2=ES, 3=FR,
4=IT, 5=JA, 6=??, 7=??
Write Language to EEPROM
Write EEPROM OSD Timer
Write EEPROM Volume

AA
AA
AA

97
98
99

0~7 cksum ?
Data cksum ?
Data cksum ?

Write EEPROM Gamma index
Write OSD Transparency to EEPROM
Write OSD Rotation to EEPROM
Read C1 (Bluish) R-Gain data from EEPROM
Read C1 (Bluish) G-Gain data from EEPROM
Read C1 (Bluish) B-Gain data from EEPROM
Read C2 (sRGB) R-Gain data from EEPROM
Read C2 (sRGB) G-Gain data from EEPROM
Read C2 (sRGB) B-Gain data from EEPROM
Read C3 (Reddish) R-Gain data from EEPROM
Read C3 (Reddish) G-Gain data from EEPROM
Read C3 (Reddish) B-Gain data from EEPROM
Read User R-Gain data from EEPROM
Read User G-Gain data from EEPROM
Read User B-Gain data from EEPROM
Read Cx R-Gain data from EEPROM
Read Cx G-Gain data from EEPROM
Read Cx B-Gain data from EEPROM
Read Contrast from EEPROM
Read Brightness from EEPROM

AA
AA
AA
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3
A3

9A
9E
9F
3C
3D
3E
4C
4D
4E
5C
5D
5E
6C
6D
6E
7C
7D
7E
92
93

Data
Data
Data
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX

cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum

(Also Update MCU RAM)

?
?
?

For model with Gamma curve
selection function

?
?
?
?
?
?
?
?
?
?
?
?
?
?
?

Reserved for some model have
extra color temperature

?
?

4
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure
1=C1/9300/Bluish,
2=C2/6500/sRGB/,
3=C3/5800/Reddish,
Read C/T index from EEPROM
Read OSD-Hpos EEPROM
Read OSD-Vpos from EEPROM

A3
A3
A3

94
95
96

XX cksum ?
XX cksum ?
XX cksum ?

Read Language from EEPROM
Read OSD Timer from EEPROM
Read Volume from EEPROM

A3
A3
A3

97
98
99

A3
A3
A3
CC
CC
CC
CC
CC
CD
CD
CE

9A
9E
9F
01
02
03
04
05
01
02
01

XX
XX
XX
XX
XX
XX
XX
XX
XX
XX
XX

cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum

Off burn in mode
Monitor is forced power saving
Monitor wake up from power saving
User mode to factory mode
Auto Color (Offset1, Offset2, Gain)

CE
CF
CF
1A
1B

XX*
01
XX*
5A
5A

XX
XX
XX
XX
XX

cksum ?
cksum
cksum
cksum ?
cksum

Copy EDID Serial number to EEPROM
Factory mode to User mode
Clear user mode and factory recall
Write EDID data to MCU DDC RAM
Copy DDC RAM data to EEPROM
Drive WP pin to low to enable write DDC IC
Drive WP pin to high to disenable write function

1C
1E
1F
55
BB
55
BB

5A
5A
5A
NA
NA
NA
NA

XX cksum
XX cksum ?
XX cksum ?
NA
NA ?
NA
NA ?
NA
NA
NA
NA

0=DE, 1=EN, 2=ES, 3=FR,
4=IT, 5=JA, 6=??, 7=??

XX cksum ?
XX cksum ?
XX cksum ?

Read Gamma index from EEPROM
Read OSD Transparency from EEPROM
Read OSD Rotation from EEPROM
Change Color Temp. to C1/9300K/Bluish
Change Color Temp. to C2/6500K/sRGB
Change Color Temp. to C3/5800K/Reddish
Change Color Temp. to User
Change Color Temp. to Cx
Change Input Source to D-Sub
Change Input Source to DVI
On burn in mode

4=User, 5=Cx

?
?
?
?
?
?
?

For model with Gamma curve
selection function

Change C/T immediately. And
store C/T index to EEPROM.
?
?
?

?

Reserved

Store data to EEPROM
XX* = Non "1" value
Store data to EEPROM
?
?

XX* = Non "1" value

?
?

For specified "Industry
Customer" model.

?
?

Store data to EEPROM
For MTV312 MCU type
For MTV312 MCU type
For stand alone DDC IC
For stand alone DDC IC

EEPROM Bank R/W (For Debug using only, not for Production Line Write EEPROM directly)
Read EEPROM Bank 0
Read EEPROM Bank 1
Read EEPROM Bank 2
Read EEPROM Bank 3
Write EEPROM Bank 0
Write EEPROM Bank 1
Write EEPROM Bank 2
Write EEPROM Bank 3

B0
B1
B2
B3
B8
B9
BA
BB

Address
Address
Address
Address
Address
Address
Address
Address

XX
XX
XX
XX
Data
Data
Data
Data

cksum
cksum
cksum
cksum
cksum
cksum
cksum
cksum

?
?
?
?

(For 24C08 type)
(For 24C08 type)

?
?

(For 24C08 type)
(For 24C08 type)

?
?

5
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure
Note A: Byte4 (cksum) = Byte1 + Byte2 + Byte3
Note B: Data = The value write to MCU or EEPROM
Note C: XX = don't care, any value ( & lt; =0xFF).
When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes)
Return Code
Checksum error code
Normal return code
If normal return code is exact FCh

R-Byte1

R-Byte2

FC
the above Byte3 (/data)
FC

AA
FC
CF

6
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

4. Wire Dressing and assembling concern
Prepare 1 panel

Assembly panel and main BKT

7
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add 4 screw between panel and main BKT

8
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add FFC

9
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add Tape

10
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly IF board and Power Board

11
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly PCB module and main BKT

12
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly IF board and FFC

13
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add one tape

14
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly lamp wire and Power Board

15
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add one screw

16
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add 5 screw

17
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly main shielding and main BKT

18
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add 2 screw

19
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly control board wire and IF board

20
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

21
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add one tape

22
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly Bezel and Rear Cover

23
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add 4 screw

24
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Add 1 screw

25
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Assembly Base and Rear cover

26
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

Finished

27
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

28
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure

29
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
I. Introduction:
The Q7T4 is a 17" SXGA (1280x1024) , 16.2M colors(R, G, B 6-bit data+FRC data) TFT
LCD monitor. It's an analog only interface LCD monitor with a 15 pins D-sub signal cable. it's
compliant with VESA specification to offer a smart power management and power saving function. It
also offers OSD menu for users to control the adjustable items and get some information about this
monitor, and the best function is to offer users an easy method to set all adjustable items well just by
pressing one key, we called it "Auto key" which can auto adjusting all controlled items. Q7T4 also
offer DDC2 function to meet VESA standard.
II. Block diagram

The Q7T4 consists of a LCD module with 4 lamps, an power board, a control board ,and a
interface BD. The block diagram is shown as below.

LCD module with 4 lamps (backlight)

Inverter

Interface board

Power
Control board

D-Sub
AC power in

III.

Circuit operation theory:
A-1.) Interface board diagram:

1
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory

MTV312M
64(AJ)

Clock
Generator

XGA

D-SUB

140MHz
ADC

1280×1024
LCM

RTD 2023

IIC

Keypad

(a) Circuit operation theory:
A basic operation theory for the interface board is to convert input signal into digital RGB .
Analog RGB signal is converted to digital signal through ADC. The microprocessor RTD2023
receives video data and optimizes the image automatically. It also supports 16 color from a 64k
palette bitmap OSD, and keypad controlling. The output data are sent to LCD module.
(b) IC introduction:
1.) DDC (Display Data Channel) function: We use DDC IC to support DDC/2B function. DDC
data is stored in 24C04(EEPROM). Those data related to LCD monitor specification. PC
can read them by "SDA" and "SCL" serial communication for I?C communication for
DDC2B.
2.) RTD2023 IC: There are triple ADC, LVDS transmitter ,Scaling, and OSD functions in the
RTD2023 IC. Scaling IC is revolutionary scaling engine, capable of expanding any source
resolution to a highly uniform and sharp image, combined with the critically proven
integrated 8 bit triple-ADC and patented Rapid-lock digital clock recovery system. It also
2
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
support detect mode and DPMS control.
3.) MTV312M64: To stored the source code which is accessed by MCU to run program.
4.) EEPROM: We use 24C04 to store all the adjustable data and user settings.And use 24C02 to
store DVI EDID data.
A-2.) Control board introduction:
There are 6 keys for user's control which includes "Power", "Enter", "Up/Plus",
"Down/Minus" , "Exit", and "iKey" . The following descriptions are the introduction of these keys.
(1) Power key: to turn/off power of monitor
(2) "Enter" key: to enter sub-menus or select items.
(3) "Up/Plus key: to select previous and to increase adjustment
(4) "Down/Minus" key: to select next and to decrease adjustment
(5) "Exit" key: to back to previous menu, or leave OSD (auto save)
(6) "iKey": to perform auto adjustment
(7) LED: It indicates the DPMS status of this LCD monitor; green light means DPMS on (Normal
operating condition). Amber light means DPMS off (Powersaving).

A-3.) Power board diagram:

EMI Filter

Rectifier and

Isolation power

filter

Inverter circuit

transformer

PWM controller

Switching element

Rectifier and filter

Rectifier and filter

LDO regulator

Feedback Isolation

Fig.1
3
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
#1 EMI Filter
This circuit (fig. 2) is designed to inhibit electrical and magnetic interference for meeting FCC, VDE,
VCCI standard requirements.

Fig. 2
#2 Rectifier and filter
AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output
voltage is 1.4*(AC input). (See Fig.3)

Fig. 3

4
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
#3 Switching element and Isolation power transformer
When the Q601 turns on, energy is stored in the transformer.
During Q601 turn-off period, the stored energy is delivered to the
secondary of transformer. R607, C607 and D601 is a snubber circuit.
R615 is current sense resistor to control output power. (See Fig.4)

Fig. 4
#4 Rectifier and filter
D701 and C703 are to produce DC output. L701 is used to suppress high Frequency switching spikes.
(See Fig.5)

Fig. 5

5
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
#5 PWM Controller
The PWM controller NCP1200A implements a standard current mode architecture. With an
internal structure operating at a fixed 40KHz. Where the switch time is
dictated by the peak current set-point. When the current set-point falls
below a given value. The output power demand diminishes, the IC
automatically enters the so-called skip cycle mode and provides
excellent efficiency.

Fig. 6
#6 Feedback circuit
PC123 is a photo-coupler and TL431 is a shunt regulation. They are
used to detect the output voltage change and be the primary and
secondary isolation. When output voltage changes, the feedback voltage
will be compared and duty cycle will be decided to control the correct
output voltage. (See Fig.7)

6
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory

Fig. 7

A-3.) Control board introduction:
The main parts of the control board are a push button, and a LED.
(a) Push button: It's a simple switch function, pressing it for "ON" to do the auto
adjustment function, releasing it for "OFF" to do nothing.
(c) LED: It indicates the DPMS status of this LCD monitor; green light means DPMS on
(Normal operating condition). Amber light means DPMS off (Power off condition).

7
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
A-4.) Inverter diagram:
1.Block Diagram:

ON/OFF

OSCILATOR

switching

TRANSFORMER

CCFL

CIRCUIT

15Vin

ON/OFF

PWM CONTROLLER
PROTECTION
TL1451 CIRCUIT
AND DETECT

BRT_ADJ

2. General Specification
Input Voltage: 15V
Input Current: 2A max.
ON/OFF Voltage: 5V
PWM Duty: 5V/50KHz
Output Requirement:
Max. Output Current: 7.5mA
Min. Output Current: 3.3mA
Lamp Working Voltage: 660Vrms
Open Lamp Voltage: 1500Vrms
Frequency: 50KHz

8
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
3.Circuit Operation Theorem
3.1 ON/OFF SWITCH

The turn-on voltage was controlled by R815 and R816.The inverter was turned on or off by the
switching transistors Q801 and Q802.

9
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
3.2 PWM Control circuit

TL1451 is a dual PWM controller.C807 and R811 decide the working frequency.BLT_ADJ signal is
from control board, control pulse width then decide how much energy delivery to CCFL also decide
CCFL brightness. Q810 and Q811 be the buffer to rise the drive capability and the totem poles
circuit can improve a capable of driving for Q812.C813 decide the striking time delay.

10
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
3.3 Oscillator Circuit

Royer circuit uses the characteristic of transformer saturation to oscillate. When the DC power inject,
Q808 or Q809 will turns on, and the current Ic increases. After a period, the transistor will leave the
saturation status and Vce increase. The result causes the voltage of primary coil get lower. Finally the
transistor turn off, and another transistor turn on. These statuses are repeated and the pin7 and pin8 of
T801 will get a sine wave to turn on CCFL.

11
Confidential

5

D

4

CON301
1
2
3
4
5
6
7
8
9
10

3

2

I _KEY

1

KEY_MENU

KEY_EXIT
KEY_LEFT
BLU
ORG

LED301
BLU
ORG

KEY_ RIGHT
KEY_MENU
PW_SW

A2
A1

SW301
1

BLU/ORG
J

G1
KEY_ RIGHT

SW302
1
G1

2060089110

KEY_LEFT

SW303
1
G1
SW306

C

PW_SW

1
G1

KEY_EXIT

SW304
1
G1

I _KEY

SW305
1
G1

D

2240069431
2
G2
2240069431
2
G2
2240069431
2
G2
2240069431
2

C

G2
2240069431
2
G2
2240069431
2
G2

B

B

LED use 06.3N5YG.14X;
Key use 22.40069.431
Project Code
99.L1C72.001
Title

Model Name

O EM/ODM Model Name
NA

Q7T4
CTRL BOARD

A

Size PCB P/N
& lt; Size & gt;
48.L1C03.S02

A

PCB Rev. Document Number
S02

99.L1C72.000-C3-304-002

Date: Thursday, August 26, 2004
Sheet
Prepared By
Reviewed By
ANGEL HU
5

4

3

2

1

ALLEN PC LEE

1
of
Approved By
DAVEN WU

1

R e v.
0

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification

Table of Contents

1. Introduction

3

2. Operational Specification

3

2.1 Power supply................................................................................................................................. 3
2.2 Signal interface ............................................................................................................................. 4
2.3 Video performance ........................................................................................................................ 5
2.4 Scan range ..................................................................................................................................... 6
2.5 Plug & Play DDC2B Support ....................................................................................................... 6
2.6 Support Timings ............................................................................................................................ 6

3. Operational & Functional Specification

7

3.1 Video performance ........................................................................................................................ 7
3.2 Brightness Adjustable Range ........................................................................................................ 7
3.3 Acoustical Noise ........................................................................................................................... 7
3.4 Environment.................................................................................................................................. 7
3.5 Transportation ............................................................................................................................... 7
3.6 Electrostatic Discharge Requirements........................................................................................... 8
3.7 EMC .............................................................................................................................................. 8
3.8 Reliability...................................................................................................................................... 8
3.9 Audio performance........................................................................................................................ 9

4. LCD Characteristics

9

4.1 The Physical definition & Technology summary of LCD panel ................................................... 9
4.2 Optical characteristics of LCD panel ............................................................................................ 9

5. User Controls

10

5.1 User's hardware control definition................................................................................................ 10
5.2 OSD control function definition.................................................................................................... 10

6. Mechanical Characteristics

11

6.1 Dimension ..................................................................................................................................... 11
6.2 Weight ........................................................................................................................................... 11
6.3 Plastic ............................................................................................................................................ 11
6.4 Carton............................................................................................................................................ 12
1
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification

Table of Contents

7. Pallet & Shipment

12

7.1 Container Specification................................................................................................................. 12
7.2 Carton Specification...................................................................................................................... 12
Product: ................................................................................................................................. 12
Package: ................................................................................................................................ 12

8. Certification

12

Appendix: Physical Dimension Front View and Side view

14

2
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
1. Introduction
This specification describes Q7T4, which is a 17.0" analog interface color TFT LCD monitor without audio. The
monitor supports up to 1280x1024 pixel resolution and refresh rate of 75 Hz. The independent 6 bits R, G, B
colors are capable of displaying 16.2M colors (RGB-6bit + FRC data). In addition, dithering function is
supported. The features summary is shown below,
*All panel spec. in C201 definition depends on the variance of panel source.

Feature items
Panel supplier & module name
Screen diagonal
Display Format
Pixel Pitch
Viewing Angle (@ Contrast Ratio = 10)
Analog interface with Scaling supported
DVI interface with Scaling supported
Video interface with Scaling supported
Max resolution mode supported
Number of Display Colors supported
Contrast Ratio
Luminance

Specifications
AUO M170EG01
17.0" (432mm)
SXGA / 1280 (H) x 1024 (V)
0.264 mm x 0.264 mm
R/L: 70/70 degrees (typ.)
and U/D: 70/60 degrees (typ.)
Yes
No
No
1280 x 1024 @ 75Hz
16.2M colors
450:1 (typ.)
260 cd/m2 (typ.)

AC power input
DC power input (with AC power adapter)

Yes
No

DPMS supported

Yes

LED indicator for power status showed
OSD for control & information supported
Multi-language supported for OSD

Yes
Yes
Yes

Buttons control supported

Yes

Flywheel control supported
Scaling function supported
Auto adjustment function supported
DDC function supported (EDID ver. 1.3)
Audio speakers supported
Audio Jack (input connector) supported
Earphone Jack (input connector) supported
Microphone function supported
Mechanical Tilt base design
VESA wall mounting design
Mechanical Rotate design
Mechanical Lift base design
Kensington compatible lock design

No
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
Yes

Remark
Further divided into v.0 and v.1
versions (spec v.1)
337.920(H) x 270.336(V)

Panel spec.
With 15-pin D-sub connector

(RGB 6-bits + FRC data)
White Luminance@CCFL
7.5mA (center)
90-264 Volts, 47-63 Hz.
<= 1W at 115?5 VAC
<=2W at 230 VAC in Power off
Preferred Mode
Green/Amber/Non
8 languages
6 buttons including 1 monitor
power on/off control button.

"i-key" function
DDC2B only

From -5 to +20 degree

2. Operational Specification
2.1 Power supply
3
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
Item
Input Voltage range
Input Current range
Power Consumption
DPMS

Condition

Spec

Universal input full range
90 ~ 264VAC
Normal "On" operation

90~264VAC /47~63Hz
&amp; lt; 2.0 Arms
&amp; lt; 40 W
&amp; lt; 1 W in power preferred
mode, 115V
&amp; lt; 2 W, 230V
&amp; lt; 30 A (peak)
&amp; lt; 60 A (peak)
&amp; lt; 3.5 mA
Without damage
&amp; lt; 0.1 ohm
1KV
Common: 2KV,
Differential: 1KV

DPMS "Off" state

Inrush Current
Earth Leakage Current
Hi-Pot
Power Line Transient

110 VAC
220 VAC
264 VAC/50Hz
1. 1500VAC, 1 sec
2. Ground test: 30A, 1sec
IEC1000-4-4
IEC1000-4-5 (Surge)

OK N.A

Remark

?
?
?

LED: Green

?

LED: Amber

?

Cold-start

?
(on-line test)
(in-lab test)

?

?
?

CCFL operation range

90 ~ 264VAC

3 mA ~8mA

CCFL Frequency

90 ~ 264VAC

40KHz ~ 80KHz

?

Color: Black
Length: 1500 +/- 50 mm

Panel Spec.
3.0 ~ 8.0mA rms
Panel Spec.
40KHz ~ 80KHz

?

?

Power cord

2.2 Signal interface
Item

Condition

Spec

15-pin D-sub connector

Color: Black
Length: 1500 +/- 30 mm
Color: Black
Length: 2000 +/- 50 mm
See Note-1

24-pin DVI-D connector
Signal type

Separate analog R/G/B

Level

700 mV (peak to peak)

Impedance

75 Ohms +/- 1.5 Ohms

Signal Cable
24-pin DVI-D

Video input

Separate H/V-sync
Composite H/V-sync
(Positive/Negative)
Logic High: 2.4V ~ 5.5V
Logic Low: 0V ~ 0.5V
(TTL level)

Signal type

Sync input

Level
Impedance
Sync Pulse Width (SPW)

Minimum 2.2K?(pull down)

0.7?s &amp; lt; H-SPW
1H &amp; lt; V-SPW

Remark

?

See Note-2

15-pin D-Sub

Pin assignment

OK N.A

?
?

For 15-pin D-sub

?

For 24-pin DVI-D

?
?
?

For 15-pin D-sub

?

For 15-pin D-sub

?

Refer to VESA VSIS
Standard V1R1

?
?

10K? for application

Note-1: The pin assignment of 15-pin D-sub connector is as below,
1

5

6

10
11

15

4
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
Pin
1
2
3
4
5
6
7
8

Signal Assignment

Pin

Signal Assignment

Red video
Green video
Blue video
Ground
Cable Detected
Red Ground
Green Ground
Blue Ground

9
10
11
12
13
14
15

PC5V (+5 volt power)
Sync Ground
Ground
SDA
H-Sync (or H+V)
V-sync
SCL

Note-2: The pin assignment of 24-pin DVI-D connector is as below,

Pin

Signal Assignment

Pin

Signal Assignment

1
2
3
4
5
6
7
8
9
10
11
12

TMDS RX2TMDS RX2+
TMDS Ground
Floating
Floating
DDC Clock
DDC Data
Floating
TMDS RX1TMDS RX1+
TMDS Ground
Floating

13
14
15
16
17
18
19
20
21
22
23
24

Floating
+5V Power
Ground
Hot Plug Detect
TMDS RX0TMDS RX0+
TMDS Ground
Floating
Floating
TMDS Ground
TMDS Clock+
TMDS Clock-

2.3 Video performance
Item
Max. support Pixel rate
Max. Resolution
Rise time + Fall time

Condition

Spec
135 MHz
1280 x 1024
&amp; lt; 6.25 ns
(50% of minimum pixel
clock period)

OK N.A

Remark

?
?
?

1280 x 1024 @ 75Hz
(max. support timing)

Settling
Time
after
overshoot /undershoot

&amp; lt; 5% final full-scale value

?

Refer to VESA VSIS
Standard V1R1

Overshoot/Undershoot

&amp; lt; 12% of step function
voltage level over the full
voltage range

?

Refer to VESA VSIS
Standard V1R1

5
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
2.4 Scan range
Item

Condition

Spec

Horizontal
Vertical

OK N.A

30 ~ 83 KHz
56 ~ 76 Hz

?
?

Remark
Without Frame buffer

2.5 Plug &amp; Play DDC2B Support
Item
DDC channel type

Condition

Spec

OK N.A

?

DDC2B

EDID

Remark

Version 1.3

Refer to Q7C4 S/W
spec. document to see
the detailed EDID data
definition.

?

2.6 Support Timings
Actual Output

Input Timing

OK N.A

Resolution

Horizontal

Vertical

Dot Clock

Actual display

Remark

640x350

31.47(P)

70.08(N)

25.17

1280x943

?

DOS

720x400

31.47(N)

70.08(P)

28.32

1280x1024

?

DOS

640x480

31.47(N)

60.00(N)

25.18

1280x1024

?

DOS

640x480

35.00(N)

67.00(N)

30.24

1280x1024

?

Macintosh

640x480

37.86(N)

72.80(N)

31.5

1280x1024

?

VESA

640x480

37.50(N)

75.00(N)

31.5

1280x1024

?

VESA

800x600

37.88(P)

60.32(P)

40.00

1280x1024

?

VESA

800x600

48.08(P)

72.19(P)

50.00

1280x1024

?

VESA

800x600

46.86(P)

75.00(P)

49.50

1280x1024

?

VESA

832X624

49.72(N)

74.55(N)

57.29

1280x1024

?

Macintosh

1024x768

48.36(N)

60.00(N)

65.00

1280x1024

?

VESA

1024x768

56.48(N)

70.10(N)

75.00

1280x1024

?

VESA

1024x768

60.02(P)

75.00(P)

78.75

1280x1024

?

VESA

1024X768

60.24(N)

74.93(N)

80.00

1280x1024

?

Macintosh

1152x864

67.50(P)

75.00(P)

108.00

1280x1024

?

VESA

1152x870

68.68(N)

75.06(N)

100.00

1280x1024

?

Macintosh

1152x900

61.80(N)

66.00(N)

94.50

1280x1024

?

SUN 66

1152x900

71.81(N)

76.14(N)

108.00

1280x1024

?

SUN

1280x1024

64.00(P)

60.00(P)

108.00

1280x1024

?

VESA

1280x1024

75.83(N)

71.53(N)

128.00

1280x1024

?

IBM1

1280x1024

80.00(P)

75.00(P)

135.00

1280x1024

?

VESA

1280x1024

81.18(N)

76.16(N)

135.09

1280x1024

?

SPARC2

Note-3: "P", "N" stands for "Positive", "Negative" polarity of incoming H-sync/V-sync (input timing).

6
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
3. Operational &amp; Functional Specification
3.1 Video performance
Item
Resolution
Contrast ratio
Brightness
Response time

Condition

Spec

Any input resolution modes
which are under 1280 x 1024

1280 x 1024

?

450:1 (typ.)

?
?
?
?
?
?

2

At R/G/B saturated condition

260 cd/m (typ.) @ 7.5mA

Rising + Falling time

16 ms (typ.)

At Contrast ratio = 10

R/L: 70/70 degrees (typ.)

At Contrast ratio = 10

U/D: 70/60 degrees (typ.)

Viewing angle
CIE coordinate of White

(0.31, 0.33) +/- (0.03, 0.03)
16.2M colors
(RGB 6-bits + FRC data)

Display colors

OK N.A

?

Remark

Support dithering

3.2 Brightness Adjustable Range
Item

Condition

At default contrast level
(saturate point) &amp; Full-white
Brightness adjustable range
color pattern

Spec
(Max. brightness value -
Min. brightness value)
? 100 cd/m^2

OK N.A

Remark

?

3.3 Acoustical Noise
Item
Acoustical Noise

Condition

Spec

At 1 meter distance
&amp; "Audio" function disabled

OK N.A

? 40 dB/A

Remark

?

3.4 Environment
Item

Condition

10 ~ 90%

Non-operating

5 ~ 95%

Operating

0~3048m (10,000ft)

Non-operating

Altitude

-20 ~ +60 ?

Operating

Humidity

0 ~ +40 ?

Non-operating

Temperature

Spec

Operating

0~12,192m (40,000ft)

OK N.A

?
?
?
?
?
?

Remark

Non-condensing
Non-condensing
Without packing
With packing

3.5 Transportation
Item

(1) Vibration

Condition

Spec
(1) Sine wave

Package, Non-Operating

5~200Hz 1.5G, 1 octave/min,
15 min dwell on each resonant
frequency, all primary axis,
one sweep (30 min minimum)
per orientation, total of 90+
min.

OK N.A

Remark

?

7
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
(2) Random
5 ~100 Hz, 0 dB/Oct. 0.015
g2/Hz
100 ~200 Hz, -6 dB/Oct.
200 Hz, 0.0038 g2/Hz
Equivalent to 1.47 Grms, All
primary axis, 20 min perorientation, total is 60 min.

(3) Procedure:

(2) Unpackaged Vibration

Confirmed sample with
appearance and function ready
before testing then compare
with after test record as
brightness, uniformity and
contrast ratio. Perform
random vibration after
sine-wave vibration test.
Test Spectrum:
20 Hz 0.0185(g2/Hz)
200Hz 0.0185(g2/Hz)
Unpackaged, Non-Operating Duration : 5 Minutes
Axis : 3 axis ( Horizontal
and Vertical axis ,Z axis)

(3) Drop

Package, Non-Operating

(4) Shock

Wooden package,
Non-Operating

91 cm Height (MP stage)
(1 corner, 3 edges, 6 faces)
Waveform: half sine
Faces: 6 sides/ per orientation
3 shocks.
Duration: &amp; lt; 3ms
Velocity accelerate: 75g

?

?
?

3.6 Electrostatic Discharge Requirements
Item
Electrostatic Discharge

Condition

Spec

IEC801-2 standard

Contact: 8KV
Air: 15KV

OK N.A

Remark

?

3.7 EMC
Item

Condition

Spec

Electric

TCO03
Magnetic
FCC part 15J class B

EMI
EN55022 class B

Band 1 &amp; lt; 10 V/m
Band 2 &amp; lt; 1 V/m
Band 1 &amp; lt; 200nT
Band 2 &amp; lt; 25nT
After Mass production under
1dBuv for constant measure.
Besides DNSF and VCCI
class-2 are optional.

OK N.A

Remark

?
?
?

3.8 Reliability
Item
MTBF Prediction
CCFL Life time

Condition

Spec

Refer to MIL-217F
At 25?2?, under 7.0mA

&amp; gt; 60,000 Hours
50,000 Hours (typ.)

OK N.A

?
?

Remark
Excluding CCFL
See Note-4

Note-4: CCFL lifetime is determined as the time at which brightness of lamp is 50%. The typical lifetime of
CCFL is on the condition at 7.5mA lamp current.
8
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
3.9 Audio performance
Item
Preamp + Power amp
(1)Output power
(2)THD (@ 1W)
(3)S/N ratio
Speaker Driver
(1)Nominal impedance
(2)Rated input power
(3)Frequency response
(4)Output sound pressure level
(5)Dimension of box
Audio Control
(1)Volume range
(2)Mute

Condition

Spec

OK N.A

Remark

?
?
?

1 Wrms/CH @ 1KHz
&amp; lt; 1%
&amp; gt; 40dB

?
?
?
?
?

8 ohm
2 W/CH
180~20KHz SPL-10dB
84 ? 3 dB (1W 0.5M)
62x33cx20 mm2

?
?

0 ~100 levels
On/Off

4. LCD Characteristics
4.1 The Physical definition &amp; Technology summary of LCD panel
Item
LCD Panel Supplier
Panel type of Supplier
Screen Diagonal
Display area
Physical Size
Weight
Technology
Pixel pitch
Pixel arrangement
Display mode
Support color

Condition

Spec

OK N.A

AUO
M170EG01 V1
432mm(17.0")
Unit=mm

337.920(H) x 270.336(V)

Unit=mm

358.5(H) x 296.5(V) x 17.0 (D) (typ.)

Unit=gram

1900 (typ.)
TN type

Unit=mm

0.264 x 0.264
R/G/B vertical stripe
Normally white
16.2M colors (RGB 6-bits + FRC data)

Remark

?
?
?
?
?
?
?
?
?
?
?

Per one triad

4.2 Optical characteristics of LCD panel
Item

Unit

Conditions

Viewing Angle

[degree]
[degree]
[degree]
[degree]

Horizontal (Right)
CR = 10
(Left)
Vertical
(Up)
CR = 10 (Down)
Normal Direction
Rising Time
Falling Time
Rising + Falling
Red x
Red y

Contrast ratio
Response Time
Color / Chromaticity

[msec]
[msec]
[msec]

Min.
60
60
60
50
250
0.61
0.31

Typ.
70
70
70
60
450
12
4
16
0.64
0.34

Max.

Remark

20
5
25
0.67
0.37

9
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
Coordinates (CIE)

Color Coordinates (CIE) White
Luminance Uniformity
White Luminance @ CCFL
7.5mA (center)
Crosstalk (in 75Hz)

[%]
[cd/m2]

Green x
Green y
Blue x
Blue y
White x
White y
9 points measurement

0.26
0.58
0.11
0.04
0.28
0.30
75

0.29
0.61
0.14
0.07
0.31
0.33
80

0.32
0.64
0.17
0.10
0.34
0.36
-

210

260

-

[%]

1.5

* The test methods for the above items' definition, please refer to the relative panel specification.

5. User Controls
5.1 User's hardware control definition
Item
Monitor Power button
Enter button
Right/Inc. button
Left/Dec. button
Exit /Volume button
I-key button
Mode Selection button
Mute button
Input source select button

Condition

Spec

OK N.A

Remark

?
?
?
?
?
?
?
?
?

5.2 OSD control function definition
Item

Condition

Spec

Auto Adjust
Brightness
Contrast
Horizontal Position
Vertical Position
Pixel Clock
Phase
Color
OSD Position
OSD Time
Language

Auto-Geometry

Bluish
Reddish
sRGB
User: Separate R/G/B adjustment

OSD Horizontal position
OSD Vertical position
From 5 sec to 60 sec
8 languages
Color recall
Recall All

Recall

OK N.A

Remark

?
?
?
?
?
?
?
?
?
?
?
?
?

Mode Selection

10
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
D-sub
DVI

Input Select
Sharpness
Display Information
Volume
Mute
Hot key for Brightness
Hot key for Contrast
Hot key for Volume
Hot key for Mode

For input timing

?
?
?
?
?
?
?
?
?

* The detailed firmware functions' specification, please refer to C212 S/W spec. document.

6. Mechanical Characteristics
6.1 Dimension
Item
Bezel opening

Condition

Spec

OK N.A

339.84 x 272.24 mm

Remark

?

Monitor without Stand

L x W x H mm

323.75*378*60.5mm

?

Monitor with Stand

L x W x H mm

362*378*135.31 mm

?

Carton Box (outside)

L x W x H mm

456(L)*423(W)*114(H)

?

Tilt: -5 ~ +20 degree

?

Tilt and Swivel range

Swivel: 0 degrees

6.2 Weight
Item
Monitor (Net)
Monitor with packing (Gross)

Condition

Spec
3.8 Kg
5.7 Kg

OK N.A

Remark

?
?

6.3 Plastic
Item
Flammability

Condition

Heat deflection To
UV stability

Spec

OK N.A

94-HB

?

ABS

65 ?

?

ABS

Delta E &amp; lt; 8.0

Remark

?

MPRII: ABS

Resin

?

(VW55/VE0856/D350)
MT-11020

Color

?

BCS-Y5003A

Texture

?

Bezel texture
MT-11000
Bezel painting
T8020C

11
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
6.4 Carton
Item

Condition

Spec

OK N.A

B Flute

?

16 KGF/cm2

?

18 Layers

?

Kraft

Material
Compression strength
Burst Strength
Stacked quantity

Remark

?
?

288 KGF

Color

7. Pallet &amp; Shipment
7.1 Container Specification
Container

Quantity of products
(sets)
(Every container)

20'

Stowing Type

1080

Quantity of Products
(sets)
(Every Pallet)

Quantity of pallet
(sets)
(Every Container)

Pallet B: 12

Pallet A: 90

Pallet A: 14

Pallet B: 72

Pallet B: 14

X

X

X

X

X

X

X

2520

40'

Pallet A: 12

Pallet B: 72

With pallet

Pallet A: 90

X

20'

Without pallet

40'

7.2 Carton Specification
Product:
Net Weight (Kg)

Gross Weight (Kg)

Dimension w/o Base
L*W*H (mm)

Dimension w/ Base
L*W*H (mm)

3.8Kg

5.7Kg

323.75*378*60.5mm

362*378*135.31 mm

Package:
Carton Interior Dimension (mm)
L*W*H

448(L)*415(W)*100(H)

Carton External Dimension (mm)
L*W*H

456(L)*423(W)*114(H)

8. Certification
Item
Environment

Condition

Spec

OK N.A

Remark
ISO14000
Requirement

?

Green design

API Doc. 715-C49

Blue Angel

German Standard

?

Switzerland

?

E-2000

12
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
EPA

USA Standard

?

TCO'99

?

TCO'03

?

Green Mark

?
PC98/99

PC-Monitor

DDC 2B
USB

?

Version 1.3

DPMS

?

VESA

Microsoft Windows

?
?

External
UL60950 3rd edition

UL (USA)

?

CAN/CSA-C22.2 No. 60950

?

Nordic / D.N.S.F

EN60950

?

FIMKO

EN60950

?

CE Mark

73/23/EEC

?

CSA (Canada)

IEC60950

Safety

?

EN60950

?
EN60950

TUV/GS

?

EN60950 /

CB

?

EK1-ITB 2000:2003

?

CCC (China)
GOST

EN60950

?
?

SASO
89/336/EEC

?

FCC Part 15 B

?

EN55022

Class B

?

CISPR 22

Class B

?

VCCI Class B

?

CNS 13438

?

AS/ NZS CISPR22

?

CE Mark
FCC (USA)

EMC
VCCI (Japan)
BSMI (Taiwan)
C-Tick (Australia)
DHHS (21 CFR)

X- Ray Requirement

?

USA X- Ray Standard

?

DNHW
PTB

?

German X- Ray standard

TUV / Ergo

Ergonomics

?

ISO 13406-2

?

prEN50279

?

13
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification

Appendix: Physical Dimension Front View and Side view
Fig. 1 Physical Dimension Front View and Side view

14
Confidential

5

4

3

2

2

D N5
BAV99

C1
3 0.01U

C 20
0.01U J

ESD solution

C 25
0.01U J

C 49
0.01U J

1

1

3

2

C2
0 .1U

3

1

TP1

1

3

3
PC5V

R1
4.7K

U1
A0
A1

2
3

VCC
WP

A2

SCL

VSS

4

SDA

D1
6.2V

R2
4.7K

8

TP2

7
6

TP5

0

TP10

D D C _WP_A
R 14

D

R+
G+

TP8

B+

L1

L2

D2
6.2V

D3
6.2V

100

C4

0.047U

100

C5

0.047U

R9

100

C6

0.047U

R 11

100

C7

0.047U

R 12

C9
4.7P C

C 77
0 .1U

1

R 16

100

C8

0.047U

R EDR ED+
G REENGREEN+
BLUE-

C 10
4.7P C

BLUE+

C 11
4.7P C

200

R 17

1

0.047U

A-detect
100

3.3V_MCU

C3

R8

Z60

100

R7

Z60

R 35

TP11

2024012A15

R6

Z60

L3

47
2

DSUB_SCL

47

R 15

D SUB_SDA

15

75

TP6

G2

R 13
4.7K

14

R5

75

TP3
TP4

2

R 10

13

TP9

AT24C02A

12

TP7

D SUB_SDA

R4

75
6
1
7
2
8
3
9
4
10
5

11

D SUB_SCL

5

R3

J1

G1

1

1

D

D N4
BAV99

2

D N3
BAV99

2

D N2
BAV99

P C5V

2

D N1
BAV70LT1
1

2

1

3.3V_MCU

3.3V_MCU

200

H S YN C

2

2

V SYN C
D5
6.2V

R 19
2K

C 12
22P J

C 13
20P J

1

R 18
2K

1

D4
6.2V

C

C

3.3V_MCU
D N6
BAV70LT1
1

D VIPC5V

3

2

J2

3.3V_MCU
TP12
TP13
TP14
TP15
TP16
TP17

TP18

RX2RX1RX0RX2+
RX1+
RX0+

ESD solution

2
3

R 22

0

RX0M

1

2

RX0-

3

R 24

0

RX0P

4

A0

VCC

A1

WP

A2

SCL

VSS

SDA

R 21
4.7K

8
7
6

R 23

47

5

R 25

47

D VI_SCL
D VI_SDA

2

RX0+

2
3

D N8
BAV99

R 20
4.7K

U2
1

D N7
BAV99

TP19
TP20

RX1-

1

DVI_SDA

TP22

RX1+

Hot- Plug R 30

R 26

10K
RX2-

3

3

0

R 33

0

R 34

0

0

D D C _WP_D
R 29
4.7K

B

RX2M

RX2P

2

3

R 27

3.3V_MCU

D N 12
BAV99

2

1

D N13
BAV99

D N 14
BAV99

3

RXCM

2

RXC-

1

C 16
0.01U

1

D8
6.2V
ESD solution

0

R 32

RX1P

RXC+

D N 15
BAV99

3

RXCP

1

1

1

1

2022009024

D7
6.2V

R 31

D N 11
BAV99

1
RX2+

3

2

2

2
D6
6.2V

0

RX1M

2

RXC-

G1
G2
D-detect

0

R 28

D N10
BAV99
2

RXC+

TP23
TP24

3

2

DVI_SCL
DVIPC5V

TP21

AT24C02A

D N9
BAV99

3.3V_MCU
G1
G2

C 14
0.1U

C 15
0.01U

1

B

1
9
17
2
10
18
3
11
19
4
12
20
5
13
21
6
14
22
7
15
23
8
16
24

1

1
9
17
2
10
18
3
11
19
4
12
20
5
13
21
6
14
22
7
15
23
8
16
24

A

A

Project Code

Model Name

O EM/ODM Model Name

Q7T4

99.L1C72.001
Title

NA

INTERFACE BOARD

Size P CB P/N
&amp; lt; Size &amp; gt;
48.L1C01.S02

PC B Rev. Document Number

Date: Thursday, July 29, 2004
Prepared By

Sheet
R eviewed By

AN GEL HU
5

4

3

2

S02

99.L1C72.000-C3-304-001

ALLEN PC LEE
1

1

of
6
Ap proved By
D AV EN WU

Re v.
1

5

4

3

2

1

Delete FB1, C20; FB2, C25 ;
6/16 change FB3,FB4,FB5 from
0805 to 0603
C 17
3.3V_MCU

R 3 .3DVCC

18P J

0 .1U

C 27

C 28

0 .1U

0.1U

6
7

0 .1U

3.3V_MCU

9
12
14
15
17
18
20
21
23
24

RX2P
RX2M
RX1P
RX1M
RX0P
RX0M
RXCP
RXCM

R 38
4.7K
R 39
1K

11
13
19
26
10
16
22
25

TMDS_VCC

C

30
31
33
34
35
37
38

BLUE+
BLUEGREEN+
GREENR ED+
R ED-

R 2 .5DVCC

+2.5V
F B5

29
36
41

AD C _VCC
1

220 OHM

2

+

C 42
22U 25V
&amp; lt; Spec &amp; gt;

C 43
0 .1U

C 44
0.1U

C 45
0 .1U

C 46

C 24

0 .1U

0 .1U

28
27
32
39
40
42
43

H S YN C
V SYN C

DPLL_VDD
APLL_VDD
DPLL_GND
APLL_GND

1
2

C 30
22U 25V
&amp; lt; Spec &amp; gt;

C 31

C 32
0.1U

128
97
70
44

AG3N/TEAN
AG3P/TEAP
ACLKN/TEBN
ACLKP/TEBP
AB1N/TECN
AB1P/TECP
AB2N/TECLKN
AB2P/TECLKP
AB3N/TEDN
AB3P/TEDP

B+
BSOG/ADC_TEST
G+
GR+
RADC_VDD
ADC_VDD
ADC_VDD
ADC_REFIO
ADC_GND
ADC_GND
ADC_GND
ADC_GND
AHS
AVS

BR1N/TOAN
BR1P/TOAP
BR2N/TOBN
BR2P/TOBP
BR3N/TOCN
BR3P/TOCP
BG1N/TOCLKN
BG1P/TOCLKP
BG2N/TODN
BG2P/TODP

100

VOL_ADJ

1

R 36

113
112
55

+

C 19
4.7U 25V

+

108
107
106
105
104
103
102
101
100
99

R 37

C 23
4.7U 25V

100

BRT_ADJ

68
67
66
65
64
63
62
61
60
59

C

94
93
92
91
90
89
88
87
86
85

RXOIN0RXOIN0+
RXOIN1RXOIN1+
RXOIN2RXOIN2+
RXOCKINRXOCKIN+
RXOIN3RXOIN3+

82
81
80
79
78
77
76
75
74
73

RXEIN0RXEIN0+
RXEIN1RXEIN1+
RXEIN2RXEIN2+
RXECLKRXECKIN+
RXEIN3RXEIN3+

C 33

0 .1U

BG3N
BG3P
BCLKN
BCLKP
BB1N
BB1P
BB2N
BB2P
BB3N
BB3P

RTD2523

TMDS_VDD
TMDS_VDD
TMDS_VDD
TMDS_VDD
TMDS_GND
TMDS_GND
TMDS_GND
TMDS_GND

F B3

+

AR1N
AR1P/TCON[0]
AR2N/TCON[1]
AR2P/TCON[5]
AR3N/TCON[6]
AR3P/TCON[7]
AG1N/TCON[8]
AG1P/TCON[9]
AG2N/TCON[10]
AG2P/TCON[11]

TMDS_TST/PWM1
EXT_RES
RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCP
RXCN

AD C _VCC

220 OHM

TCON[12]/COUT/PWM2
PWM0/REFCLK
TCON[13]/COUT/PWM2

PLL_TEST1
PLL_TEST2

50
54
53
52
51
111
56

3.3V_MCU

XO
XI

2

0.1U

1
2
4
5
3
8

C 29

0 .1U

XI

C 22

0 .1U

C 26

C 21

1

TMDS_VCC

2

XO
R 3 .3DVCC

2.5V Ground
2.5V Ground
2.5V Ground
2.5V Ground

120
109
96
84
72
57
48

R 3 .3DVCC

127
98
69
45

18P J

2.5V Power
2.5V Power
2.5V Power
2.5V Power

C 41

0 .1U

TCON[11]/V[0]
TCON[10]/V[1]
TCON[9]/V[2]
TCON[8]/V[3]
TCON[7]/V[4]
TCON[6]/V[5]
TCON[5]/V[6]
TCON[1]/V[7]
TCON[0]/VCLK

C 40

0 .1U

114
115
116
117
118
119
122
123
124

C 39

0 .1U

121
110
95
83
71
58
49

C 38

0.1U

3.3V Power
3.3V Power
3.3V Power
3.3V Power
3.3V Power
3.3V Power
3.3V Power

C 37

0 .1U

DDCSDA
DDCSCL
DDCSDA2
DDCSCL2

C 36

0 .1U

47
46
125
126

C 35

C 34
22U 25V
&amp; lt; Spec &amp; gt;

3.3V Ground
3.3V Ground
3.3V Ground
3.3V Ground
3.3V Ground
3.3V Ground
3.3V Ground

2

+

R 2 .5DVCC
D

SCLK
SDIO[0]
TCON[4]/SDIO[1]
TCON[3]/SDIO2]
TCON[2]/SDIO[3]/PWM2
SCSB
RESET#

220 OHM

R 3 .3DVCC

Y1
24.576MHZ

C 18

F B4
1

D

0 .1U
RTD_SCLK
RTD_SDO/SDI
S DIO1
S DIO2
S DIO3
RTD_SCSB

B

RESET
RTD_RESET

R 40
R 41

0
0

R 67
4.7K

B

delete RN1, add R65
R66;Delete RN2 Add R67;
R35: Delete R65,R66 0615

D SUB_SDA
D SUB_SCL

3.3V_MCU

A

A

Project Code

Model Name

O EM/ODM Model Name

Q7T4

99.L1C72.001
Title

NA

INTERFACE BOARD

Size P CB P/N
&amp; lt; Size &amp; gt;
48.L1C01.S02

PC B Rev. Document Number

Date: Thursday, July 29, 2004
Prepared By

Sheet
R eviewed By

AN GEL HU
5

4

3

2

S02

99.L1C72.000-C3-304-001

ALLEN PC LEE
1

2

of
6
Ap proved By
D AV EN WU

Re v.
1

5

4

3

delete RN4,RN5,RN6,RN8;
Q1,R44,C49,R46,R47

2

1

1
2
3
4

R N3

4.7K

8
7
6
5

3.3V_MCU

D

D

3.3V_MCU

I - KEY
PW _SW

RTD_SCSB
PANEL_ON
D-detect

KE Y_MENU

C 47
0 .1U

3.3V_MCU

29

HSDA/P3.1/Txd

DSUB_SCL

3.3V_MCU

+2.5V

GMT

U6
1

VIN

C 52
0.1U

VOUT

C

3

C 53
0.1U

G950T65U

28

P6.0/AD0

VOL_ON

GND
GND

41

42

43

40
DA5/P5.5

DA4/P5.4

DA3/P5.3

1

2

3

4

5

44
VSYNC

DA2/P5.2

DA1/P5.1

DA0/P5.0

VDD3

HSYNC

P6.1/AD1

27

18

BL_ON

30

HSCL/P3.0/Rxd

LE D_GRN

31

P6.4/DA10

P1.0

P1.1

17

P6.2/AD2/HLFHI

L ED_ORG

32

P6.5/DA11

MTV312MV64

26

16

STOUT/P4.2

K EY_RIGHT

33

P6.6/DA12

P1.7

D D C _ WP_D

C

15

ISCL/P3.5/T1

25

D D C _WP_A

34

P6.7/DA13

P1.6

14

D D C_WP_A

35

DA6/P5.6

ISDA/P3.4/T0

P1.5

SC L

SOCKET P/N: 22.10079.044

X1

SD A

AT24C04N-10SI-2.7

D D C _ WP_D

36

DA7/HCLAMP

SC L

5

4.7K

37

VBLANK/P4.0

X2

6

3.3V_MCU

38

HBLANK/P4.1

U5

VSS

24

13

P6.3/AD3

P1.4

12
SD A

DA9/HALFV

23

Y2
12MHZ

39

DA8/HLFHO

22

11

SDA

R 68

VDD

P1.3

10

C 50 6.8P J

SCL

GND

7

WP

A2

4

R 43
4.7K

8

VCC

A1

3

RST

21

9

P1.2

4.7K

20

8
R 45

NC

6
7

P3.2/INT0

3.3V_MCU
3.3V_MCU

C 51 6.8P J

NC

C 48
0.22U K

19

RESET

A0

2

3.3V_MCU

R 42
4.7K

U4
1

2
G1

**C50 close to scaler, R43 close to MCU.

D SUB_SDA
RTD_SDO/SDI
KEY_LEFT
KEY_EXIT
A-detect
RTD_RESET

C 55
100P
50V J

1
2
3
4

TP25
TP26

BRT_ADJ

8
7
6
5

4.7K

TP30

VOL_ADJ
3.3V_MCU

J3
1
3
5
7
9
11

1
3
5
7
9
11

2
4
6
8
10
12

TP27

2
4
6
8
10
12

L4
Z30

1

B

2N3906
Q2

1

0 .1U

C 64
220P J

2
10K

R 49

2N3906
Q3
R 51

BL_ON
+5V
3.3V_MCU
VOL_ON

+ C 56
22U 25V

0 .1U

C 60

B

0 .1U

+ C 57
22U 25V

C 61

C 62

C 63

0 .1U

0.1U

0 .1U

220

220

2

3

R 48

C 59
2

C 58

L ED_ORG

220 OHM

TP28
TP29
TP31

2072060206

3.3V_MCU

L ED_ORG

L5

1

R N7

C 54
100P
50V J

2

SDIO1
SDIO2
SDIO3
RTD_SCLK

LE D_GRN

R 50

10K

1
3

LE D_GRN

C 65
0 .1U

C 66
0 .1U
J4

R 53

KEY_EXIT
KEY_LEFT
K EY_RIGHT
K EY_MENU
PW _SW
I - KEY

1K

R 54

1K

L6
R 55

1K

R 56

1K

R 57

1K

R 58

L7

L8

L9

L10

1K

L11

TP32
TP33
TP34
TP35
TP36
TP37
TP38
TP39
TP40

R 52

0

1
2
3
4
5
6
7
8
9
2060091109

C 67
100P
50V J

A

C 68
100P
50V J

C 69
100P
50V J

C 70
100P
50V J

C 71
100P
50V J

C 72
100P
50V J

A

Project Code

Model Name

O EM/ODM Model Name

Q7T4

99.L1C72.001
Title

NA

INTERFACE BOARD

Size P CB P/N
&amp; lt; Size &amp; gt;
48.L1C01.S02

PC B Rev. Document Number

Date: Thursday, July 29, 2004
Prepared By

Sheet
R eviewed By

AN GEL HU
5

4

3

2

S02

99.L1C72.000-C3-304-001

ALLEN PC LEE
1

3

of
6
Ap proved By
D AV EN WU

Re v.
1

5

4

3

2

1

+5V

D

D

5V_PANEL
1

3

R59
100K

Q4
ELM13401CA

20K

2

2

C75
OPEN
25V

R61
10K

C74
0.1U

G(1)

Q5
2N3904

1
+

C73
22U 25V

2

+5V

3
R60

1

PANEL_ON

+
2

1

D(3)

S(2)

C76
0.1U

C

C

J5

5V_PANEL
R62
R63
R64

0
0
0

RXEIN3+
RXEIN3RXECKIN+
RXECLKRXEIN2+
RXEIN2-

B

RXEIN1+
RXEIN1RXEIN0+
RXEIN0RXOIN3+
RXOIN3RXOCKIN+
RXOCKINRXOIN2+
RXOIN2RXOIN1+
RXOIN1RXOIN0+
RXOIN0-

A

G1
1
TP41 2
3
TP42 4
TP43 5
TP44 6
7
TP45
8
TP46
9
TP47
10
TP48
11
TP49
12
TP50
13
14
TP51
15
TP52
16
17
TP53
18
TP54
19
TP55
20
TP56
21
TP57
22
TP58
23
24
TP59
25
TP60
26
TP61
27
TP62
28
TP63
29
TP64
30
G2

G1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
G2

B

Project Code

Model Name

99.L1C72.001
Title

O EM/ODM Model Name
NA

Q7T4
INTERFACE BOARD

A

PCB Rev. Document Number

Date: Thursday, July 29, 2004
Prepared By

20K2085030

Size PCB P/N
&amp; lt; Size &amp; gt;
48.L1C01.S02

Sheet
Reviewed By

ANGEL HU
5

4

3

2

S02

99.L1C72.000-C3-304-001
4

ALLEN PC LEE

6
of
Approved By
DAVEN WU

1

R e v.
1

5

4

3

2

1

C

5

1

C

1

D

1

D

OP1
OP

OP2
OP

5

9

5

8

4

8

4

8

3

7

3

7

3

7

2

Optical Points

9

4

B

6

2

6

2

6

H1

H2
HOLE-V8

B

H3

HOLE-V8

OP3
OP

9

HOLE-V8

A

Project Code

Model Name

99.L1C72.001
Title

D ate: Thursday, July 29, 2004
Prepared By
ANGEL HU
4

3

2

NA

INTERFACE BOARD

Size PCB P/N
&amp; lt; Size &amp; gt;
48.L1C01.S02

5

A

O EM/ODM Model Name

Q7T4

P C B R ev. Document Number
99.L1C72.000-C3-304-001

S02

Sheet
R eviewed By
ALLEN PC LEE
1

5

of
6
A pproved By
DAVEN W U

R e v.
1

5

4

3

2

1

1. Add C20, C25, C49, C77, R35

D

D

C

C

B

B

A

A

P r o j e c t Code

Mo d e l Nam e

9 9 .L 1 C72.001
Title

O E M/OD M Mo d e l Nam e

Q7T4

NA

I N T E R FAC E B OAR D

S ize P C B P /N
&amp; lt; Size &amp; gt;
4 8 .L 1 C 01.S02
D a te : Th u r s d a y, J u l y 2 9 , 2004
P r e p a r e d By

5

4

3

2

1

P C B R e v. D o c u m e n t Num ber

S h eet
R e vi e w e d B y

A N GE L H U

S02

AL L E N P C L EE

9 9 .L 1 C 7 2 .000-C3-304-001
6

of
6
A p p r o ve d B y
D AVEN WU

R e v.
1

Q7T4-FP71G LCD Monitor Service Guide
Trouble Shooting
Q7T4 TROUBLE SHOOTING GUIDE
No Display or display is unstable:
1.1 Interface Board:
No picture or picture unstable

Power off

Yes

Turn on power

No

Does cable plugs in

No

Check all of wire then turn on power

connector?

switch again.

Yes

Does power stable?

No

Check Power BD

Yes

Is LED light green/orange?

No

Check control BD

Yes

Is LED status normal?

No

Check Flash Rom or replace it

Yes

Does crystal work correctly?

No

Check crystal CKT or replace it

No

Replace interface BD

Yes

Is interface BD normally?
Yes

Replace panel

1
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Trouble Shooting
2. BUTTON function:
2.1 Control Board

OSD is not working
Yes

Is control BD connecting?

No

Plug control BD then retry

Yes

Is bottom switch normally?

Yes

Replace control BD then retry

No
Replace Control BD
Is OSD working??

No
Check Interface BD

3. OSD function:
OSD doesn't work

Is control BD working?

No

Replace control BD

Check interface BD

4. Power Board

2
Confidential

Q7T4-FP71G LCD Monitor Service Guide
Trouble Shooting

B acklight didn't shine

Y

Y
Replace Q761

IC801 PIN 9 IS 15V?
N

LED shined?
N

N
Plug CN701 again or
checking I/F BD

Y
PWM existed?
(BLT_ADJ)

3.3V existed?

IS I/F board connected?
Y

Y
N
Plug CN601 again or
checking PW BD

Replace new fuse
Turn on level existed?
(BLT_ON)

N

Y

Replace new fuse

N
Insert them again

N

Y
Check CN801, CN802
was pluged properly?

Check IC701 OK?

Replace IC701

Y
N
Replace IC801,Q805

Y
Checking F601
Broke?

Replace new fuse

N

Y
Check IC601 Vcc
existed?

Replace
IC601,Q602,Q603
R602

N

Replace IC602,
IC702,D701 or check
I/F BD

3
Confidential

BENQ LCD Q7T4(FP71G) Spare Parts List
P/N: 99.L1C72.ASE

ITEM DESCRIPTION

PART NO.

LOCATION

1

PCBA I/F BD MI AUO M170EG01

55.L1C01.001

2

IC CONTROLER RTD2023 QFP 128P

71.02023.00E

U3

3

IC EEPROM AT24C02N-10SI-1.8SON

72.02402.C01

U1

4

IC EEPROM AT24C04N-10SI-2.7SON

72.02404.N01

U4

5

IC VR G950T65U SOT-223

74.95065.03C

U6

6

IC FLASH MTV312MV64 (AJ) PLCC44

71.31264.A03

U5

7

PCBA SPS BD MI QT74 EG01

55.L1C02.001

8

PCBA CTRL BD MI Q7T4

55.L1C03.001

9

LCDM 17 M170EG01 V.1 AUO

56.91L83.011

10

ASSY FC ABS 8020C Q7T4

60.L1C01.001

11

ASSY RC ABS 5003A Q7T4

60.L1C02.001

12

ASSY BASE-CLUM ABS 5003A Q7T4

60.L1C03.001

13

CTN B 456*423*114 Q7T4/BENQ

44.L1C01.001

14

CSN BTM EPS Q7T4

47.L1C01.001

15

CSN TOP EPS Q7T4

47.L1C02.001

16

CABLE SIGNAL 15/15P CORE*1 1.5M

50.L9005.501

17

CD MANUAL Q7T4

53.L1C01.001

18

ASSY BASE ABS 5003A Q7T4

60.L1C04.001

* THIS PARTS LIST MAY BE SUBJECT TO CHANGE
WITH PRIOR NOTICE BY CSD OF BENQ.

Page : 1 / 1