9-6
BDP-BX2/S360
IFcon section flowchart (1/2)
IFcon block
p
ower su
pp
ly
check
UNSW3.3V voltage (+3.3 V)
Is 3.3 V output from IC301 pin 4?
No
Is +5.8 V input to IC301 pin 5?
No
Is the fuse (PS301) blown?
No
To Power Supply (System)
flowchart
Yes
Yes
Replace PS301
If symptoms do not improve, check
for a short on the circuit board.
No
Replace IC301
P_FAIL detection operation check
Replace R30
5
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
V
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
pressed.
No
Is the FFC from CN1404
disconnected? (Other than the
POWER ke
y)
No
POWER:
䇭
CN301 pin 1 KEY 0
STOP: CN1404
pin 13 KEY 1
Is the harness from CN301
disconnected?
(POWER ke
y)
OPEN/CLOSE:
CN1404
pin 14 KEY 2
Is the FL-193 harness from the power
su
pp
ly
disconnected?
(POWER ke
y)
PLAY: CN1404 pin 15 KEY 3
Yes
Remote control o
p
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
ge out
put correctl
y?
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
Is
th
ere a pro
bl
em w
ith
th
e moun
ting
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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