Table of Contents
Advertisement
Flowchart 10
Does it work normally after replacing the cable?
Are there signals on SC4701: 2, 3pin?
Are there signals on IC4701: 8, 13pin?
Are there signals on IC4701: 9, 11pin?
Is there 3.3V on IC4701: 15, 16pin?
Check or replace the peripheral circuits of IC4701.
RS232C does not work normally.
NO
NO
NO
YES
YES
YES
The cable is defective.
YES
Check if SC4701 is in poor contact, or replace it.
YES
Check R4705, 4706, FB4701, and 4702.
NO
Check P4701 and harness. Does it work normally after replacing
them?
Check the peripheral circuits of IC2501.
NO
Check the power circuit.
4 – 6
BD-HP75U
NO
Advertisement
Table of Contents
