User Guide

19
DCD-510AE
FLOW CHART NO.7
No operation is possible from the remote control unit.
㸣
Is 5V voltage supplied to Pin(3) terminal of the infrared
remote control receiver (RC41)?
㸢No Check +5VDD line and service it if defective.
㸣Yes
Is the "L" pulse sent out Pin(1) terminal of receiver
(RC41) when the infrared remote control is activated?
㸢No
Replace the infrared remote control receiver (RC41) or
replace the remote control unit.
㸣Yes
Is the "L" pulse supplied to the Pin(35) of IC21? 㸢No Check the li ne between Pin(1) terminal of receiver
㸣Yes (RC41) and Pin(35) of IC21, and service it if defective.
Replace IC21.
FLOW CHART NO.8
The disc tray cannot be opened and closed. (It can be done usin g the remote control unit.)
㸣
Is the normal control voltage inputted to Pin(86) of IC21?
Refer to "FLOW CHART NO.6" <The key operation is not
functioning.>
㸢No Replace the "OPEN" button (SW47).
㸣Yes
Refer to "FLOW CHART NO.9" <The disc tray cannot be
opened and closed.>
FLOW CHART NO.9
The disc tray cannot be opened and closed.
㸣
Check the line between CN52 and IC21, and service it if
defective.
FLOW CHART NO.10
Audio is not outputted normally.
㸣
Set the disc on the disc tray, and playback.
㸣
Are the analog audio signals outputted to each pin(7) of
IC72 or IC82
㸢No
Check AUDIO+V(+12V) and AUDIO-V(-12V) line and
service it if defective.
㸣Yes
IC72 7PIN : AUDIO (L)
IC73 7PIN : AUDIO (R)
Check the DAC(IC75) digital audio data signal of a DSP
(IC31). (SCK, BCK, LRCK, DATA)
㸣Yes 㸣Yes
Is the "H" level MUTE line to Pin(8) of CX61?
Check the DAC(IC75) control signal of a microcomputer
(IC21). (MS, MC, MDI))
㸣Yes 㸣Yes
Check POWER MUTE line and F_MUTE line service it if
defective.
Check DAC_Vcc(+5V) line and service it if defective.
IC21 69PIN MUTE H : mute/L:play 㸣Yes
Replace IC75.