6 0
H.
10-8. VCR AUDIO CIRCUIT(NORMAL)
A. TROUBLE SHOOTING OF PB MODE
CASSETTE IS NOT INSERTE
IS MOTOR VCC SUPPLIED ?
( AT PIN 7 OF PA805 )
CAM DATA IS CHANGED
WHEN CST IN ?
IS 5V APPLIED TO PIN 5 OF
IN03 WHEN CST IN ?
CHECK POWER MODULE ?
CHECK CONNECTOR
CHECK DECK PART.
IS 5V SUPPLIED AT
PIN 45 OF IN01 ?
CHECK IN01
CHECK PATTERN
CHECK IN03
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NO SOUND IN THE
PLAYBACK MODE
IS THE OUTPUT AT PIN 77
OF IY01 ?
CHECK A/V SELECT CIRCUIT
IS 5V APPLIED TO PIN 76 OF
IY01 AND IS 5.8V APPLIED
TO PIN 2 OF TY01 ?
CHECK POWER CIRCUIT
IS LESS THAN 0.2V AT PIN
80 OF IY01 ?
IS CLOCK AND DATA APPLIED
TO PIN 63,64 OF IY01?
CHECK SYSCON
CHECK QCY09,QCY10,
QCY12
IS COLLECTOR OF QCY10
GND ?
CHECK PATTERN AND
AC HEAD.
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
Содержание MV1421
Страница 1: ...SERVICE MANUAL MV1421 1422 4822 34cm 48cm Televideo Effective December 1999 MV4822SERV ...
Страница 6: ...4 3 BLOCK DIAGRAM 3 1 Audio Signal Flow ...
Страница 7: ...5 3 2 Video Signal Flow ...
Страница 8: ...6 3 3 TV and monitor power switching ...
Страница 22: ...20 3 Block Diagram ...
Страница 53: ......
Страница 54: ......
Страница 55: ......
Страница 117: ...2 Main PCB Assy Circuit Diagram SECTION BEFORE AFTER MAIN TUNER ...
Страница 118: ...3 SECTION BEFORE AFTER SUB TUNER ...
Страница 125: ...10 Exploded View MV1421 model ...
Страница 126: ...11 Exploded View MV1422 model ...
Страница 127: ...12 Exploded View MV4822 model ...
Страница 128: ...13 Exploded View DVT 20F9 model ...
Страница 129: ...14 Exploded View DVT 21F1 model ...
Страница 130: ...15 Exploded View DVT 21F2 model ...