42
Is MCU+3.3V_2 voltage supplied to Pin(3) terminal of the infrared
remote control receiver (IC75)?
Is the "L" pulse sent out Pin(1) terminal of receiver (IC75) when the
infrared remote control is activated?
No operation is possible from the remote control unit.
Is the "L" pulse supplied to the Pin(6) of IC11?
Replace IC11
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
The disc tray cannot be opened and closed.
Refer to "FLOW CHART NO.9" <The disc tray cannot be opened and
closed.>
Is the normal control voltage inputted to Pin(92) of IC11? Refer to
"FLOW CHART NO.6" <The key operation is not functioning.>
Check the line between CWC7 and IC31, and service it if defective.
Check MCU+3.3V_2 line and service it if defective.
Replace the infrared remote control receiver (IC75) or
replace the remote control unit.
NO
NO
Check the line between Pin(1) terminal of receiver(IC75)
and Pin(6) of IC11, and service it if defective.
Replace the "OP/CL" button (S706).
NO
NO
YES
YES
YES
YES
FLOW CHART NO.6
FLOW CHART NO.7
FLOW CHART NO.8
Summary of Contents for DCD-520AE
Page 34: ...34 7 Click Password 8 Choose the Device is Blank And Click OK...
Page 35: ...35 9 Click Object File tab 10 Click Browse...
Page 37: ...37 13 Click Option 14 Choose Erase Without Password for 900 Family And Click OK...
Page 44: ......
Page 45: ......
Page 48: ...48 Personal notes...
Page 74: ...74 TMP92CD28AFG IC41...
Page 75: ...75 TMP92CD28AFG Block Diagram...
Page 78: ...78 TC94A92FG IC21...
Page 88: ...88 2 FL DISPLAY V F D FUTABA 16ST103GINK F701 PIN CONNECTION 1 43...
