9-6
BDP-BX2/S360
IFcon section flowchart (1/2)
IFcon block
ower su
l
check
UNSW3.3V voltage (+3.3 V)
Is 3.3 V output from IC301 pin 4?
No
Input voltage
Is +5.8 V input to IC301 pin 5?
No
Is the fuse (PS301) blown?
No
To Power Supply (System)
flowchart
Yes Yes Yes
Replace PS301
If symptoms do not improve, check
for a short on the circuit board.
REG control voltage
Is +5.8 V in
ut to IC301
in 1?
No
Replace IC301
Yes
P_FAIL detection operation check
Replace R30
If symptoms do not improve, replace
IC301.
Check the P_FAIL voltage
Is +3.3 V output from IC1404 pin 1?
No
Replace R1465 and check for +3.3
at IC1404 pin 1. If symptoms do not
improve, replace IC1404 (P_FAIL
detection
.
No
Yes
Main unit key check
Key Table
Check of key voltage from main unit
Key Table () when key is pressed or
not
ressed.
No
Is the FFC from CN1404
disconnected? (Other than the
POWER ke
No
POWER:䇭CN301 pin 1 KEY 0
STOP: CN1404
in 13 KEY 1
Is the harness from CN301
disconnected?
POWER ke
OPEN/CLOSE:
CN1404
in 14 KEY 2
Is the FL-193 harness from the power
su
l
disconnected?
POWER ke
PLAY: CN1404 pin 15 KEY 3
Yes
Remote control o
eration check
Check the waveform when the
remote control button is not pressed.
No
Check whether the FFC is
disconnected from CN1404. (Other
than the POWER key)
No
Check of the 3.3 V voltage
CN1404 pin 17, and IC1403 pin 24
Is there a problem with the RB1403
mounting condition?
Yes
Check of the waveform when the key
is pressed In comparison with a
normal waveform, is the waveform of
the volta
e out
ut correctl
?
No
Is the remote control that is used in
the inspection broken?
No
Does replacement of the FL/FR
board result in improvement?
No
Yes
Check whether the FFC is
disconnected from CN1404. (Other
than the POWER key)
Yes
To FL/FR board flowchart
s
ere a pro
em w
e moun
ng
condition of RB1401, or 1402?
Is there a problem with the mounting
condition of C1414, 1415, 1416, or
1417?
㪘 㪙
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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