5 9
E.
F.
G.
CAPSTAN MOTOR
LOADING STOP.
IS MOTOR VCC SUPPLIED ?
IS THE INPUT OF PIN 6 OF
PN03 2.5V ~ 3.5V ?
IS PIN 4 OF PN03 2.5V ?
DOES PIN 77 OF IN01
SUPPLY CAPSTAN PWM.
CHECK CONNECTOR
AND MOTOR.
CHECK POWER MODULE.
CHECK CIRCUIT OF RN12,
RN33, RN44
CHECK RCN31, RCN32
CHECK IN01, RCN10, RCN11
NG
NG
NG
NG
OK
OK
OK
OK
DRUM MOTOR AND CAPSTAN
MOTOR ROTATE AT REGULAR
SPEED. ( IN REC MODE )
IS C.SYNC APPLIED TO PIN
84 OF IN01.
CHECK C.SYNC OF VIDEO
IC AND PATTERN.
CHECK MOTOR.
NG
OK
EMERGENCY MODE WHEN
PLUGGING (POWER CORD)
IS EVER 5V APPLIED ?
DOES XN02 OSCILLATOR ?
IS CAM SW DATA CORRECT ?
CHECK IN03
CHECK POWER MODULE
CHECK IN01 AND XN02
RECHECK CONNECTOR
AND CAM SW CONTACT.
CHECK IN01
NG
NG
NG
OK
OK
OK
OK
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 ...