Grundig Sono Clock 420 Technical manual

Sono Clock 420
Service Document
Exchange Set
Es gelten die Vorschriften und Sicherheitshinweise
gemäßdemServiceManual"Sicherheit",Material-
nummer 72010 800 0000, sowie zusätzlich die
eventuell abweichenden, landesspezifischen Vor-
schriften!
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.
S
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
S
Service
Manual
Sicherheit
Safety
Materialnr./Part No.
72010 800 0000
ǵ

SonoClock 420
Alignment Information
Model : GRUNDIG SC420
Ref. No. : SC420
Date : 21-Jan-00
A) FM Radio se tion
1) FM IF
INPUT SIGNAL OUTPUT SET RADIO ADJUST ADJUST FOR REMARK
TP3, 210.7MHz TP5,2 Quiet Point T1,2 Max. o/p symmetri al Vol. at min. position
2) RF VOLTAGE
BAND SIGNAL OUTPUT SET RADIO ADJUST ADJUST FOR REMARK
FM - - TP4,2 87.5MHz L2 1.9 ~ 2 .1V high end 7.5 ~8V
3) FM RF
INPUT SIGNAL OUTPUT SET RADIO ADJUST ADJUST FOR REMARK
TP1,2 90MHz Speaker 90MHz L1 Max. o/p Vol. at max. position
TP1,2 106MHz “ “ 106MHz TC1 “ “ “ “
4) 75KHZ CRYSTAL
OUTPUT ADJUST ADJUST FOR REMARK
TP6,7 TC2 75K± 1HZ
Note :
1. Use digital meter to measurement ea h required voltage on above items
2. Use weak signal in RF alignment
3. Radio & LCD board must be onne ted before alignment
4. Use the frequen e ounter to measurement ea h required frequen e on about items.

SonoClock 420

SonoClock 420

SonoClock 420

SonoClock 420

SonoClock 420

SonoClock 420

SonoClock 420

SonoClock 420

SonoClock 420
VOLTAGE TABLE OF MODEL : GRUNDIG SC420 (UNITS = VOLTS)
DATE : 21 Jan 00
COMPONENTS : IC'S
IC 1, TA7358AP IC 3, LM820
AT POWER ON CONDITION AT POWER ON CONDITION
PIN NO. V-OUT (Volts) PIN NO. V-OUT (Volts)
1 0,93 1 0,64
2 1,64 2 0,56
3 5,1 3 0,002
4 1,6 4 0
5 0 5 6,1
6 5,1 6 11,6
7 4,41 7 11,5
8 5,07 8 6,9
9 5,1
IC 2, LA1260 IC 4, S-80720AL
AT POWER ON CONDITION AT POWER ON CONDITION
PIN NO. V-OUT (Volts) PIN NO. V-OUT (Volts)
1 1,5 1 12,03
2 1,5 2 19,15
3 1,5 3 0
40
5 4,74
6 4,6
7 0,64
8 1,43
9 1,44
10 1,5
11 1,34
12 3,22
13 0
14 0
15 2,36
16 1,8

SonoClock 420
VOLTAGE TABLE OF MODEL : GRUNDIG SC420 (UNITS = VOLTS
DATE : 21 Jan
COMPONENTS : IC'S
IC 5, T-9512-1
AT POWER ON CONDITION (V-OUT = Volts or Milli-Volts (mV))
PIN NO. V-OUT PIN NO. V-OUT PIN NO. V-OUT
1 0 21 3,8 41 1,9
2 0 22 3,2 42 4,7
3 4,75 23 3,2 43 1.7mV
4 0 24 3,2 44 1.7mV
5 4,73 25 3,2
6 4,75 26 3,2
7 4,74 27 3,2
8 4,74 28 4,7
9 1,8 29 1.5mV
10 3,26 30 1.4mV
11 3,25 31 1.5mV
12 3,25 32 2,45
13 3,25 33 1.7mV
14 3,25 34 23mV
15 3,23 35 4,72
16 3,23 36 2,42
17 4,72 37 0
18 3,25 38 0
19 3,25 39 4,7
20 3,25 40 2,18

SonoClock 420
VOLTAGE TABLE OF MODEL : GRUNDIG SC420 (UNITS = VOLTS)
DATE : 21 Jan 00
COMPONENTS : TRANSISTORS
MEASURED CONDITION : AT POWER ON
Q1 9018F Q8 9014C Q26 9014C
C 5,26 C 0,56 C 0
B 3,33 B 0,5 B 0,35
E 2,64 E 0 E 0
Q2 9018F Q9 9014C
C 2,52 C 10,9
B 0,76 B 0,56
E0 E0
Q3 9014C Q10 8550
C 0,028 C 5,38
B 0 B 10,9
E 0 E 11,5
Q4 9018F Q12 9013
C 0 C 1,36
B0 B0
E 0 E 0,2
Q5 9012H Q13 9014C
C 0,025 C 2
B 0,64 B 1,02
E 0,001 E 0,53
Q6 9012H Q14 9014C
C 11,5 C 2
B 10,8 B 0,53
E 11,6 E 0
Q7 9014C Q24 9012H
C 0,14 C 4,2
B 0,7 B 4,61
E 0 E 5,36

SonoClock 420