Hitachi DV-PF2U, Руководство по обслуживанию

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1-9-3
FLOW CHART NO.8
No operation is possible from the infrared remote control.
Operation is possible from the DVD, but no
operation is possible from the infrared remote
control?
Replace the remoter control receiver or replace the
remoter control transmitter is necessary.
Replace the remote control receiver.
Check the line between the remote control receiver
and the pin(125) of IC601.
Replace IC601.
Is the "L" pulse sent out pin(1) terminal of receiver
when the infrared remote control is activated?
Is pulse signal supplied to the pin(125) of IC601?
(Although SEARCH(1), ), PLAY, STILL/
PAUSE, STOP, POWER and OPEN/CLOSE
button.)
Yes
Yes
Is 5V voltage supplied to the pin(3) terminal of
remote control receiver?
Yes
Yes
No
FLOW CHART NO.9
PON 12V is not outputted.
Is 12V voltage supplied at collector of Q1002?
Is voltage of 12V sent out from the emitter of
Q1002.
Check the Q1002 periphery circuit.
Does the P-CON switch circuit operate normally?
(Q1005, Q1006, D1036, etc.)
Are the "H" pulse inputted into Q1002.
Replace Q1002.
Check the secondary circuit, AT 12V and the
periphery circuit of Q1005 and Q1006.
Check for load circuit short-circuiting or leak.
Check each component and if poor the replace.
Check or replace Q1005, Q1006.
Yes
No
Yes
Yes
Yes
No
Yes
No
No
No
Check EV 5V line.
No
No