Sharp MD-MT866H Service Manual

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MD-MT866H/MD-MT866W
TROUBLESHOOTING
It is advisable to use the TEST mode (refer to Error Data Display Mode, P19) indicating the causes of troubles before
starting repair. Causes of operation errors (up to 10 errors) are recorded as error codes. This information is useful
for repair.
When MD playback does not function
When the objective lens of the optical pickup is dirty, this section may not operate. Clean the objective lens, and check the playback
operation. When this section does not operate even after the above step is taken, check the following items.
Remove the cabinet and follow the troubleshooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup
lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
Is the power supply turned on when the remote control
button or main unit button is pressed?
No
Perform the check stated in item "Power is not turned on
when the PLAY button is pressed".
Perform the check stated in item "Abnormal display".
No
Yes
Does the display operate normally?
Is playback state set?
Yes
Perform the check stated in item "Playback state connot be
set".
No
Is audio output normal?
Yes
Perform the check stated in item "Audio playback circuit".
No
Is recording/playback operation normal?
Yes
Perform the check stated in item "Recording/playback
operation".
No
• Power is not turned on when the / button is
pressed.
No
Yes
Is operation normal when the main body button is pressed?
Is power turned on when the remote control button is
pressed?
No
Does the pin 66 of IC401 oscillate?
Replace XL401.
Check the periphery of remote controller and main unit
headphones terminal (J703) and IC401.
• If "HOLD" appears, press and hold down STOP on
the main unit and cancel the HOLD mode.
No

Sharp MD-MT866H Specifications

General

Brand	Sharp
Model	MD-MT866H
Category	Minidisc Recorder
Language	English