Zenith XBV243 series Service Manual - Electrical
VR168 - 923-03485
3-21
D35E COMBO - ELECTRICAL
ELECTRICAL
No disc
B.
END
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YES
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YES
No disc
Power on
Does tray open or close?
Does the pick-up slide
inner or outer track?
Slide the pick-up to
inner track.
Does the pick-up lens
move up and down?
Does the voltage change at
PMD03 Pins 1, 3 more than
2V on the basis of 3.8V?
Pressing the open/close key,
check the voltage of IC2M1
Pins 22 change 0V to 5V
Does PMD03 Pin 13
change high to low?
Push Pick-up to inner
track to the end by hand.
Check Focus Driver output.
(IC201 Pin 83, IC2M1 Pins 32, 33)
Check SLED Driver output.
IC201 Pin 88 IC2M1 Pins 35, 36.
DECK assembly is defective
Check loading Part.
IC201 Pin 88 no output : IC201 is defective
IC2M1 Pin 19 no output : IC2M1 is defective
IC201 Pin 83 no output : IC201 is defective
IC2M1 Pins 24, 41 no output : IC2M1 is defective
DECK assembly is
defective. (Limit sw)
check µ-COM Part.
Replace IC2M1.
TROUBLESHOOTING (CONTINUED)