Service Document
Exchange Set
Sono Clock 890
Service |
Es gelten die Vorschriften und Sicherheitshinweise |
|
S gemäß dem Service Manual "Sicherheit", Material- |
||
Manual |
nummer 72010 800 0000, sowie zusätzlich die |
|
Sicherheit |
eventuell abweichenden, landesspezifischen Vor- |
|
schriften! |
||
Safety |
||
|
||
|
The regulations and safety instructions shall be |
|
Materialnr./Part No. |
S valid as provided by the "Safety" Service Manual, |
|
72010 800 0000 |
part number 72010 800 0000, as well as the |
|
respective national deviations. |
||
|
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
Alignment Information
Model : GRUNDIG SC890
Ref. No. : SC890
Date : 29 FEB 2000
A) FM Radio section |
|
|
|
|
|
|
|||
1) |
|
FM IF |
|
|
|
|
|
|
|
|
|
INPUT |
|
SIGNAL |
OUTPUT |
SET RADIO |
ADJUST |
ADJUST FOR |
REMARK |
|
|
TP8 |
|
10.7MHz |
TP3,4 |
Quiet Point |
T101,102 |
S curve symmetrical |
Vol. at min. position |
2) |
RF VOLTAGE |
|
|
|
|
|
|
||
|
|
BAND |
|
SIGNAL |
OUTPUT |
SET RADIO |
ADJUST |
ADJUST FOR |
REMARK |
|
|
FM |
|
- - |
TP2,5 |
108MHz |
L102 |
High end 7.3V ~ 7.7V |
1.7V ~2.3V |
3) |
FM RF |
|
|
|
|
|
|
||
|
|
INPUT |
|
SIGNAL |
OUTPUT |
SET RADIO |
ADJUST |
ADJUST FOR |
REMARK |
|
|
TP1,2 |
|
88MHz |
Speaker |
88MHz |
L101 |
Max. o/p |
Vol. at max. position |
|
|
TP1,2 |
|
106MHz |
" " |
106MHz |
TC102 |
" " |
" " |
4) |
75KHZ CRYSTAL |
|
|
|
|
|
|||
|
|
|
|
|
OUTPUT |
|
ADJUST |
ADJUST FOR |
REMARK |
|
|
|
|
|
TP6,7 |
|
CHECK |
75KHz± 4HZ |
|
|
|
|
|
|
|
|
ONLY |
|
|
5) |
32.768KHZ CRYSTAL |
|
|
|
|
|
|||
|
|
|
|
|
OUTPUT |
|
ADJUST |
ADJUST FOR |
REMARK |
|
|
|
|
|
IC201, |
|
TC202 |
Clock accuracy |
|
|
|
|
|
|
PIN 56 |
|
|
± 20 sec/month |
|
6) |
4.194304MHZ CRYSTAL |
|
|
|
|
|
|||
|
|
|
|
|
OUTPUT |
|
ADJUST |
ADJUST FOR |
REMARK |
|
|
|
|
|
IC201, |
|
CHECK |
4.194296MHz ~ |
|
|
|
|
|
|
PIN 59 |
|
ONLY |
4.194336MHz |
|
I
SonoClock 890
7) 4.332MHZ CRYSTAL
|
|
OUTPUT |
|
ADJUST |
ADJUST FOR |
REMARK |
|
|
IC202, |
|
TC 201 |
4.332MHz ± 500Hz |
|
|
|
PIN 14 |
|
|
|
|
Note :
1.Use the digital meter to measure each required voltage on the above items.
2.Use weak signal in RF alignment.
3.Radio & LCD board must be connected before alignment.
4.Use the frequency counter to measure each required frequency on the above items.
II
SonoClock 890
SonoClock 890 |
SonoClock 890 |
SonoClock 890 |
Loading...