Trouble Shooting - Sanyo NV-E7000 Service Manual

TROUBLE SHOOTING

NO POWER
Is the DC 9.0V connected to the
Power supply socket(JK110)?
Yes
Is the Power supply switch(SW110)turned ON?
Yes
Confirm 5V at Q572 emitter voltage.
Yes
Confirm 5V at pin 1 of IC570.
Yes
Confirm 14V at D140 cathode side.
Yes
Confirm 5.3V at DZ111 cathode side.
Yes
Confirm 3.6V at DZ110 cathode side.
Yes
Refer to [NO IMAGE] [NO SOUND]
NO IMAGE
Confirm CS402 is inserted correctly.
Yes
Confirm CS401and CS051 are inserted
correctly.
Yes
Confirm the signal at pin 9,13 of IC055.
No
VIDEO
A
MODE?
No
Then connect the DC
No
Then turn the Power supply switch ON.
No
Then check around Q572.
No
Then check around IC570,Q570
and Q571.
No
Then check around IC140.
No
No
No
No
Yes
NAVI
B
DVD
E
9.0V.
Then check around IC110.
Then insert CS402 correctly.
Then insert CS401and CS051
correctly.
Then check around IC055.
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