Sharp CD-C500Z, Service Manual

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l
Remove the cabinet and follow the troubleshooting
instructions.
Turn the power switch on the unit to ON.
Check the item of “The disc is not up/down.”
Does the spin motor run?
Check the item of “The spin motor does not run.”
Yes
No
When the disc is initialized, is TOC read?
Is TOC set to the playback mode?
Yes
No
Check the item of “The disc does not playback.”
Is there any audio outpu
No
Check the audio circuit.
I
Turn the power switch to ON.
1
Check the power circuit voltage.
Is the oscillating circuit (XL801) of the control
microcomputer
operating normally?
Yes
-- Check the XL801 and peripheral circuits and replace
No
faulty parts.
Check to see that the reset circuit of the control
microcomputer
is operating normally.
Normal
Check the reset circuit and peripheral circuits and
replace faulty parts.
Is the drive signal of the LCD or fluorescent character
The microcomputer is defective. Replace it.
Check the supply voltage of the
, character display tube.
The LCD or fluorescent character display tube is defective.
Normal
Are the connector and PWB pattern damaaed?
Normal
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