MD-X5H/CP-X5H
TROUBLE SHOOTING (MD SECTION)
When MD fails to operate
If the objective lens of optical pickup is contaminated, MD may fail to operate. At first, clean the objective lens to check playback
operation. If MD fails persistently to operate, perform checks as follows.
If dust or foreign substance is accumulated on the pickup lens, playback is disturbed and indication of TOC (content of tracks) may
be disabled. Before adjusting check that the lens is clean. If the lens is contaminated, treat it as follows.
Turn off power supply, impregnate the lens cleaning paper with a small quantity of isopropyl alcohol, and gently wipe the lens with
it with due care so that the lens is not damaged. At this time do not touch the lens directly with your finger.
Is power turned on in the MD position when the remoteCheck as stated in item "MD power cannot be turned on".
No
controller or main unit MD STOP button is pressed?
Yes
Is disc loading normal?Check as stated in "Disc Loading is nor normal".
No
Yes
Is playback state set when the MD PLAY/PAUSE button is Check as stated in item "Playback state cannot be set".
pressed?No
Yes
Is audio output normal?Check as stated in item "Audion playback circuit".
No
Yes
Is record and playback operations normal?Check as stated in item "Record playback operations".
No
Y MD power cannot be turned on.
Is normal operation performed when the main unit MD STOPCheck the remote controller, main unit and display PWB.
is pressed?Yes
No
Is +5V to +6V applied to the pins 15 and 16 of CNS1902?Check the power PWB, system PWB and CNS1902.
No
Yes
Is pulse given to the pin 5 of CNS1902?Check the system PWB, CNS1902.
No
Yes
Is +3.2V applied to the pin 62 of IC1401?Check the periphery of IC1401.
No
Yes
Is 8.4672 MHz pulse applied to the pin 15 of IC1401?Check IC1201.
No
Yes
Is pulse output from the pin 34 of IC1401?Check IC1401.
No
Yes
Check CNS1902 and system PWB.
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ACEC
