Dla zainteresowanych schemat. Taka mała uwaga z praktyki grzebanie przy Q113 -gałąź zasialnia +5 dla procesora czasem kończy się jego uszkodzeniem. Zalecam ostrożność, przypadkowe zwarcie E-C prowadzi do dziwnego uszkodzenia procesora.
Sono Clock 890
Service
Manual
S
Es gelten die Vorschriften und Sicherheitshinweise
gemäß dem Service Manual " Sicherheit " , Materialnummer 72010 800 0000, sowie zusätzlich die
eventuell abweichenden, landesspezifischen Vorschriften!
S
The regulations and safety instructions shall be
valid as provided by the " Safety " Service Manual,
part number 72010 800 0000, as well as the
respective national deviations.
Sicherheit
Safety
Materialnr./Part No.
72010 800 0000
Dieses Service Dokument ist nur in Datenform verfügbar
This Service Document is only available as data
Änderungen vorbehalten/Subject to alteration
Made by GRUNDIG in Germany • E-BS31 0700
http://www.grundig.com
ǵ
Service Document
Exchange Set
Alignment Information
Model : GRUNDIG SC890
Ref. No. : SC890
Date : 29 FEB 2000
A) FM Radio section
1)
FM IF
INPUT
TP8
4)
5)
6)
SET RADIO
Quiet Point
ADJUST
T101,102
ADJUST FOR
S curve symmetrical
REMARK
Vol. at min. position
RF VOLTAGE
BAND
SIGNAL
FM
--
OUTPUT
TP2,5
SET RADIO
108MHz
ADJUST
L102
ADJUST FOR
High end 7.3V ~ 7.7V
REMARK
1.7V ~2.3V
FM RF
INPUT
TP1,2
TP1,2
OUTPUT
Speaker
" "
SET RADIO
88MHz
106MHz
ADJUST
L101
TC102
ADJUST FOR
Max. o/p
" "
REMARK
Vol. at max. position
" "
ADJUST
CHECK
ONLY
ADJUST FOR
75KHz± 4HZ
REMARK
OUTPUT
IC201,
PIN 56
3)
OUTPUT
TP3,4
OUTPUT
TP6,7
2)
SIGNAL
10.7MHz
ADJUST
TC202
ADJUST FOR
Clock accuracy
± 20 sec/month
REMARK
OUTPUT
IC201,
PIN 59
ADJUST
CHECK
ONLY
ADJUST FOR
4.194296MHz ~
4.194336MHz
REMARK
SIGNAL
88MHz
106MHz
75KHZ CRYSTAL
32.768KHZ CRYSTAL
4.194304MHZ CRYSTAL
I
SonoClock 890
7)
4.332MHZ CRYSTAL
OUTPUT
IC202,
PIN 14
Note :
1.
2.
3.
4.
ADJUST
TC 201
ADJUST FOR
4.332MHz ± 500Hz
REMARK
Use the digital meter to measure each required voltage on the above items.
Use weak signal in RF alignment.
Radio & LCD board must be connected before alignment.
Use the frequency counter to measure each required frequency on the above items.
II
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SonoClock 890
VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS)
DATE : 25 APR 00
COMPONENTS : IC'S
IC 102, TA7358AP
AT POWER ON CONDITION
PIN NO. V-OUT (Volts)
1
0.52
2
1.23
3
3.42
4
1.22
5
0
6
3.42
7
2.68
8
3.39
9
3.42
IC 105, KA2201
AT POWER ON CONDITION
PIN NO.
V-OUT (Volts)
1
0.65
2
0.57
3
0
4
0
5
6.84
6
12.9
7
12.7
8
7.58
IC 103, LA1260
AT POWER ON CONDITION
PIN NO. V-OUT (Volts)
1
1.52
2
1.52
3
1.52
4
0
5
3.8
6
3.8
7
3.8
8
1.64
9
1.47
10
1.52
11
0.75
12
2.68
13
0
14
0
15
2.41
16
1.83
IC 101, BU2614
AT POWER ON CONDITION
PIN NO.
V-OUT (Volts)
1
2.43
2
2.1
3
0
4
4.97
5
0
6
4.97
7
0
8
0
9
0
10
0
11
0
12
2.37
13
4.96
14
4.96
15
1.14
16
0
Page 1 of 4
SonoClock 890
VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS)
DATE : 25 APR 00
COMPONENTS : IC'S
IC 104, TC9260
AT POWER ON CONDITION
PIN NO. V-OUT (Volts)
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
10
0
11
2.41
12
2.41
13
2.41
14
2.41
15
2.41
16
4.95
IC 106, 78L09
AT POWER ON CONDITION
PIN NO.
1
2
3
V-OUT (Volts)
16.7
0
9
Page 2 of 4
SonoClock 890
VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS)
DATE : 25 APR 00
COMPONENTS : TRANSISTORS
MEASURED CONDITION : AT POWER ON
Q101
C
B
E
9014C
5.25
1.11
0.58
Q109
C
B
E
85500
12.9
12.2
12.9
Q201
C
B
E
9014C
12.9
4.2
3.53
Q102
C
B
E
9014C
5.25
0.58
0
Q110
C
B
E
9012H
4.96
11.7
12.3
Q202
C
B
E
9014C
0.03
0.59
0
Q103
C
B
E
9018F
2
0.76
0
Q111
C
B
E
9014C
11.6
0.51
0
Q104
C
B
E
9018F
0
0
0
Q112
C
B
E
9014C
0.51
0.56
0
Q105
C
B
E
9015C
0
3.75
0
Q113
C
B
E
9012H
4.94
12.4
13
Q106
C
B
E
9014C
0
0
0
Q114
C
B
E
9014C
12.2
0.56
0
Q108
C
B
E
9014C
0.17
0.7
0
Q115
C
B
E
9014C
0.56
0.56
0
Page 3 of 4
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VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS)
DATE : 25 APR 00
COMPONENTS : TRANSISTORS
MEASURED CONDITION : AT POWER OFF
Q108
C
B
E
9014C
14.1
0
0
Q109
C
B
E
85500
0.62
14.1
14.8
Q110
C
B
E
9012H
4.96
13.5
14.1
Q111
C
B
E
9014C
13.4
0.48
0
Q112
C
B
E
9014C
0.48
0.56
0
Page 4 of 4
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