Pioneer HD-V9000 Service Manual page 27

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[1-4] LEDs not lighting
No. Possible cause Part to be checked
1 Defective LED
Defective drive
2
circuit
Defects in the sub-
CPU or the mounted
3
parts of the FLCB
Assy
[2] Operations
[2-1] Key on the front panel not functioning
No. Possible cause Part to be checked
1 Defective key
Defects in the
sub-CPU or the
2
mounted parts of
the FLCB Assy
[2-2] Remote control not functioning
Check with a remote control that operates normally.
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No. Possible cause Part to be checked
L 13942296513
Defective remote
1
control receptor
2 Defective sub-CPU FLCB Assy
[3] Communication
[3-1] LAN communication impossible
Check in a condition where a peripheral device is connected to the ETHERNET connector.
No. Possible cause Part to be checked
Improper wiring on
1 the communication
line
Defective ETHER
2 PHY device or
main CPU
[3-2] Communication with a PC impossible (DSUB9)
Check in a condition where a peripheral device is connected to the 9-pin D-SUB connector.
No. Possible cause Part to be checked
Improper wiring on
1 the communication
line
Defective
2
RS232C IC
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Defective
3
sub-CPU or
main CPU
.
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Point to be checked
Check for insufficient soldering at each LED.
If there is no soldering problem, check
KEYB Assy
whether a forward voltage (2.2 to 2.7 V) is
detected at both ends of the LED.
Check that a control signal is output for
KEYB Assy each LED from pin 4, 14, 16, 18, 19 or
21 of CN7501.
FLCB Assy If any of the above cases is not applicable.
Point to be checked
Check for insufficient connection in the signal
line between the sub-CPU (IC7011) and the
KEYB Assy
key (around the CN7501 connector for
connection with FLCB Assy).
FLCB Assy If any of the above cases is not applicable.
Point to be checked
Check the V+5E_7 power for the remote
control receptor (U7501) and mounting
KEYB Assy
condition of the parts related to the remote
control receptor.
If any of the above cases is not applicable.
Point to be checked
Check the wiring for the peripheral circuits
DECM Assy
of the ETHER IC (IC3505).
DECM Assy If any of the above cases is not applicable.
Point to be checked
Check the wiring for the peripheral circuits
FLCB Assy
of the RS232C IC (IC7302).
Check the status of communication with the
PC via the D-SUB 15-pin connector
FLCB Assy
(JAMMA).
DECM Assy
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If any of the above cases is not applicable.
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FLCB Assy
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Measures to be taken
Eliminate any soldering problems.
If there is a forward voltage, an LED part is defective.
Replace the defective part.
If any LED does not light even though the corresponding
control signal is being fed, the corresponding transistor
(Q7503, Q7504, Q7506, Q7507, Q7509, or Q7510) is
defective. Replace the defective part or the KEYB Assy.
Replace the FLCB Assy.
Measures to be taken
If conduction is not achieved at the both ends of the key
when you press it, even though there is no wiring
problem, a part of the key is defective. Replace the
defective part or the KEYB Assy.
Replace the FLCB Assy.
Q Q
Measures to be taken
3 6 7 1 3 1 5
There may be improper wiring or a defective part in
the power block. Improve the wiring or replace the
defective part of the power block. If no problem is
found in the power block, replace the remote control
receptor or the KEYB Assy.
Replace the FLCB Assy.
Measures to be taken
Check the wiring on the communication line.
Eliminate any improper wiring by soldering.
Replace the DECM Assy.
Measures to be taken
Check the wiring on the communication line.
Eliminate any improper wiring by soldering.
If there is no problem in communication, the
RS232C IC (IC7302) is defective.
Replace the defective part or the FLCB Assy.
Replace the parts in the following order and check
co
the operation.
1 FLCB Assy, 2 DECM Assy
.
HD-V9000
7
8
9 4 2 8
10.22
KEYB Assy
10.22
KEYB Assy
10.22
KEYB Assy
0 5 8 2 9 9 4 2 8
10.22
KEYB Assy
10.9 DECM
Assy (9/18)
10.24 FLCB
Assy (2/2)
10.24 FLCB
Assy (2/2)
m
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Reference
B
Reference
C
Reference
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Reference
E
Reference
F
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