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QQ
3 7 63 1515 0
I MAINTENANCE FLOW CHART
Connect the power cable
to the AC outlet
Are power
supply voltages at
W101,102 on PCB AV
normal ?
Power ON
Are each
power supply voltage
normal ?
TE
L 13942296513
Are correct
characters displayed
on FL ?
Does BGV
appear on monitor
correctly ?
Insert Disc
Does Loader
draw the disc ?
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.
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Start
Check the cable connected from power supply unit to
No
AV board.
Replace Power Supply Unit if each line was not shorted
in PCB AV, otherwise find out where it is shorted.
Yes
Check power supply control circuit.
No
P-CONT (W104 pin No.5) should be 'L'.
Check if each switching transistor (Q106,108,142)
function correctly.
Yes
Check control signal for FL driver IC (IC1 on PCB
No
OPERATION).
Check filament voltages.
Yes
Check if video signal is output from MONO board.
Check video signal path on PCB AV if it is output,
otherwise check MONO board.
No
Yes
No
Yes
x
ao
y
i
A
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8
Q Q
3
6 7
1 3
MAIN Clock 27MHz Crystal (Ref 5211)
Reset circuit NCP303 (Ref 7104)
FLASH ROM (Ref 7303)
SDRAM (Ref 7302)
MT1389 (Ref 7209)
Are signals
TROUT(pin3 of 1203)
& TRIN(pin5 of 1203)
correct ?
Yes
Are signals
LOAD+(pin2 of 1203)
& LOAD-(pin1 of 1203)
correct ?
u163
Yes
.
Check the circuit connected
to DVD mechanism.
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
No
Check the position-switch on the
DVD mechanism.
No
Check AM5888 and peripheral
m
circuit.
co
DVD-S30
9 9
2 8
9 9
17
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