Troubleshooting - Pioneer XW-NAV1-K Service Manual

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5.2 TROUBLESHOOTING

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A
Power does not turn on.
Is the voltage of
"AT+V3.3U"
(MAIN Assy CP4002-pin 9),
"AT+V3.3"
(MAIN Assy IC3003-pin 8)
3.3 V?
Yes
B
Does X3001and X3002
on the MAIN Assy
oscillate?
Yes
IC3001 (Sub u-con) on the MAIN Assy
is defective.
C
LOADER Unit does not accept
TRAY CLOSE/OPEN.
TE
L 13942296513
Is the voltage of
8 PIN and 19 PIN of IC2301
(Motor Drive IC)
on the MAIN Assy
6 V?
Yes
D
Is FFC joining
by LOADER Unit and
MAIN Assy connected
surely?
Yes
Replace the LOADER Unit.
E
LED display is not bright.
Is the voltage of
7 PIN and 21 PINof IC2001
www
(LEM Driver)
on the DISPLAY Assy
3.3 V?
Yes
F
Replace the V2001 (LED Display) and
IC2001 (LEM Driver) on the DISPLAY Assy.
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No
Check IC1701 on the MAIN Assy and around circuits.
Check the voltage of "POWER_FAIL".
Check D513 on the POWER Assy and around circuits.
No
Check X3001, X3002, IC3001 on the MAIN Assy
and around circuits.
No
Check IC1707 on the MAIN Assy and around circuits.
No
Check connection of FFC connecting
LOADER Unit and an MAIN Assy with.
No
Check IC1701 on the MAIN Assy and around circuits.
Check D513 on the POWER Assy and around circuits.
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