Aiwa HT-DV2300 Service Manual page 65

ELECTRICAL TROUBLESHOOTING GUIDE -8/10
QQ
3 7 63 1515 0
B.
No disc
.Power on
Does tray open or close?
YES
TE
L 13942296513
Fig.1. SLED Driver waveform
Does the pick-up
slide inner or outer
track?
YES
Fig.2. Focus Driver waveform
Does
the pick-up lens move up
and down?
YES
Slide the pick-up to
inner track.
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NO
Push Pick-up to inner track to
repeatedly, check the voltage of IC2M1
at PMD03 Pins 15, 16 more than
DECK assembly is defective.
NO
Check SLED Driver output.
IC201 Pin 80 IC2M1 Pins 28, 29.
NO
Check Focus Driver output.
(IC201 Pin 88, IC2M1 Pins 37, 38)
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2 9
8
Check loading Part.
the end by hand.
Does
NO
PMD03 Pin 6 change
high to low?
YES
Pressing
the open/close key
NO
Pins 13, 14 change
0V to 5V
YES
Q Q
3 6 7 1 3 1 5
Does
the voltage change
NO
2V on the basis of
3.8V?
YES
IC201 Pin 80 no output : IC201 is defective
IC2M1 Pins 28, 29 no output : IC2M1 is defective
IC201 Pin 88 no output : IC201 is defective
IC2M1 Pins 37,38 no output : IC2M1 is defective
co
.
-65-
9 4 2 8
DECK assembly is defective.
(Limit sw)
check PANTERA Part.
0 5 8 2 9 9 4 2 8
Replace IC2M1.
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9 9
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