Troubleshooting - Sharp IM-DR580H(S) Service Manual

Use the test mode which indicates trouble causes before repairing the unit. This mode records maximum 10 past error
causes as codes. Refer them for repairing.
Preparations
If dusts and foreign materials are accumulated on the pickup lens, playback sounds can be skipped or the TOC (Table of Contans)
can't be displayed. Clean the object lens and check the playback. When lens are dirty, do the following.
Turn off the power and wipe lens softly with a cleaning paper and a little marketing so as not to damage them.
Do not touch lens with bare hands.
If the unit doesn't work.
If the unit doesn't start after cleaning the pickup objects lens lens, check the unit as follows.
Is the power supply turned on when the remote control
button or main unit button is pressed ?
Does the display operate normally ?
Is playback state set ?
Is audio output normal ?
Is recording/playback operation normal ?
• Power is not turned on when the
pressed.
Is power turned on when the remote control
pressed ?
Is operation normal when the main body button is pressed ?
Does the pins 15 and 17 of IC401 oscillate ?

TROUBLESHOOTING

Yes
Yes
Yes
Yes
/ button is
button is
No
No
Yes
OK
Perform the check stated in item "Power is not turned on
No
when the /
Perform the check stated in item "Abnormal display".
No
Perform the check stated in item "Playback state cannot be
No
set".
Perform the check stated in item "Audio playback circuit".
No
Perform the check stated in item "Recording/playback opera-
No
tion".
Yes
• If "HOLD" appears, press and hold down STOP on
the main unit and cancel the HOLD mode.
No
Yes
Normal.
Check the remote control, earphone terminals on the main unit
Yes
(J703), IC401 and IC431.
If 2.6 V is applied to pins 14, 18, 19, 34, 82 and 127 of IC401,
No
replace XL401.
– 51 –
IM-DR580H
button is pressed".