Diagnosis Flowchart - Pioneer BDP-62FD Service Manual

1
5. DIAGNOSIS

5.1 DIAGNOSIS FLOWCHART

1) Power does not turn on
A
B
C
When the remote controller and the Main
Unit power button cannot turn on the power
D Replace the FRONT BOARD
ASSY
When there is no change
Replace the MAIN BOARD ASSY
E
F
18
1
2
Power does not turn on
Check whether either the
remote controller or the Main Unit
power button can not turn
on the power supply.
Both or only the Main
Unit power button
Check whether the
voltage of XP1(pin2 and
pin3) on the MAIN BOARD ASSY
are 5V and XP1(pin5)
is 12 V
Yes
Check whether the
voltage of XS135(pin6) on the
FRONT BOARD ASSY is 5 V and
X135(pin7) is 12 V
Yes
When only the Main Unit power
button is not active to turn on the power
2
3
Only the
remote controller
Check whether there is no problem in the
connector contact between the POWER
BOARD ASSY and the MAIN BOARD
No
ASSY.
If there is no problem, please replace
the POWER BOARD ASSY.
Check whether there is no problem in the
connector contact between the MAIN
No
BOARD ASSY and the FRONT BOARD
ASSY.
If there is no problem, please replace
the MAIN BOARD ASSY.
Check whether the
voltage of XP1(pin1) on the
SWITCH BOARD
ASSY is 5V
Yes
Check whether SW1
on the SWITCH BOARD ASSY
operation is
normal
Yes
Replace the SWITCH
BOARD ASSY
BDP-62FD
3
4
Go to the flowchart for
"Remote control does
not work"
Check whether there is no
problem in the connector
contact between the FRONT
No
BOARD ASSY and the
SWITCH BOARD ASSY.
If there is no problem, please
replace the FRONT BOARD
ASSY.
No
Replace SW1
How to check the SW1
1. Check the conduction with
a tester after turning off the
power.
2. Check the waveform of the
XP16(pin8:POWER_K) on
the MAIN BOARD ASSY.
Waveform (POWER_K)
SW1 OFF : 5V
SW1 ON : 0V
(GND)
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