Troubleshooting Chart - Sharp CD-M4000W Service Manual

Troubleshooting Chart

Many potential problems can be resoived by the owner without calling a service tech-
If something is wrong with this product, check the following before calling your autho-
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Symptom
. Did a power failure occur? Reset the
. The clock IS not on time.
Set tfx unit to the power stand-by mode
When a button is pressed, the unit
If the unit still malfuncbons, reset it.
. Are the headphones connected?
Are the speaker wires disconnected?
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. Is the karaoke modesetto " L-CH" . " R-CH"
Is the disc loaded upside down?
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. Playback stops m the middle or is . Does the disc satisfy the standards?
not performed properly.
Is the disc distorted or scratched?
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. Playback sounds are skipped. or Is the unit located near excessive vibra-
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stopped in the middle of a track.
. Has condensation formed inside the unit?
Radio makes unusual noise con- Is the unit placed near the TV or comput-
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Is the FM aerial or AM loop aerial placed
properly? Move the AC power lead away
from the aerial if located near.
Troubleshooting Chart
When this product is subjected to strong external interference (mechanical shock,
excessive statrc efectncity, abnormal supply voltage due to lightning, etc.) or if It is
operated incorrectly, it may malfunction.
1 Set the unit to the stand-by mode and turn the power on again
2 If the unit IS not restored !n the previous operabon, unplug and plug in the unit,
and then turn the power on.
Press the ON/STAND-BY button to enter the power stand-by mode.
2 Whilst pressing down the + button and the MONSTER-BASS button, press the
ON/STAND-BY button until " CLEAR AL" appears.
This operation will erase ail data stored in memory including clock, trmer settings,
tuner preset, and CD programme.
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3 Press the & OPEN/CLOSE button to open the disc tray.
Remove all CDs inserted in the unit.
4 Press the 6 OPEN/CLOSE button to close the disc tray.
Make sure that " NO DISC" IS dlspiayed
5 Press theON/STAND-BY button toenterthestand-by mode, and then unplug
the AC power lead from the wall socket.
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. Cannot record.
. Cannot record tracks with proper
sound quality.
Possible cause l Ca nno t er a s e
Sound skipping.
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The vocal part of a multiplexed
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The remote control does not oper- . Is the AC power lead of the unit plugged
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:?e?discverydIm/,
. Is the erase-prevent,on tab removed?
. f?. it a normal tape? (You cannot record on
a metal or 00, tape.)
. Is there any slack?
Are the capstans, p,nch roifers, or heads
the heads remkln engaged with the tape.
Do not open the comparfment forcibly.
. Is the karaoke inodeset to " L-CH" , " R-0,'
or " V-CANCEL" ?
. Is the battery ;olarfty respected?
. Is the distance or angle incorrect?
. Does the rem& control sensor recewe