20
DV-120-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
DOES
N
OT LIGHT O
N
DISPLAY
Yes
Is the voltage at
pin 7 and pin 21 of IC601
about 3.0
V
?
Check AT+3.3
V
line of
POWER BLOCK.
N
o
Replace
V
651 or IC601.
N
O PLAYBACK PICTURE OF A
V
JACK
Is there
video signal at pins 1 and 2
of IC7301 ?
Change IC7301.
N
o
Yes
N
o
Yes
Check J7302 and peripheral
circuit.
Is there
a signal at pin 99 of
IC4001 ?
Check IC4001 and
peripheral circuit.
