Read Sharp SD-CX1 (serv.man10) Service Manual online
SD-CX1H
– 80 –
• Disc loading is not normal.
Is disc loaded when it is inserted ?
No
Yes
No
Check IC1401.
No
Check CN1401, CW1931 and SW1932.
Yes
No
Check CN1401, CW1931 and IC1601.
Yes
Check M903
No
Yes
Yes
Is change observed on the pin 19 or 20 of IC1601 ?
Is change observed on the pin 12 or 13 of IC1601 ?
Is ejection performed when the MD eject button is pressed ?
Yes
Disc retracts soon after completion of disc ejection.
Yes
Check SW1932.
Is the pin 9 of CN1401 set to H state ?
Yes
No
Check the main PWB and CN1501.
No
Check the power PWB, main PWB, and
CN1501.
CN1501.
Is pulse input in the pin 22 of CN1501 when reset power
supply is turned on ?
supply is turned on ?
Is +5V to +6V applied to the pins 6 and 7 of CN1501 ?
Yes
No
Check IC1201.
No
Check the periphery of Q1804 and
IC1401.
IC1401.
Is pulse of 8.4672MHz applied to the pin 15 of IC1401 ?
Is +3.2V applied to the pin 62 of IC1401 ?
Yes
No
Check IC1401.
Is pulse output from the pin 34 of IC1401 ?
Yes
Yes
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