Pioneer KRP-500P Service Manual page 54

Hide thumbs Also See for KRP-500P:
Table of Contents

Advertisement

1
A
[5] MAIN ASSY (PANEL INTERFACE)
Flowchart of Failure Analysis for The MAIN Assy
Failure analysis for the
MAIN Assy => PM1
Does the POWER switch on?
Yes
Is resetting of the Main micro-
computer (IC7001) canceled?
B
Yes
Is the voltage at Pin 3 of the M11
connector High?
Yes
Is the M11 connector securely
connected?
Yes
Is the cable that is connected to
the M11 connector broken?
No
No problem with the MAIN Assy.
C
Check the LED Assy.
Failure analysis for the
MAIN Assy => PM2
The RELAY port does not work.
The power is not turned on.
Is the voltage at Pin 50 of the M8
connector 3.4 V?
D
Yes
Is the voltage (3.4 V) supplied
to the main microcomputer?
Yes
Can the unit be turned on, using
the remote control unit?
Yes
Can the unit be turned on, using
RS-232C commands?
E
Failure analysis for the
MAIN Assy => PM3
Video signal is not output to the
DIGITAL Assy. OSD is not displayed.
Check that the clock, H sync, V sync,
and DE signals are input to IC4004.
Yes
Check that the clockis input to R4022, and H sync,
V sync, and DE signals are input to R4021.
F
Yes
Replace the MAIN Assy.
54
1
2
No
Turn the POWER switch on.
No
Replace the MAIN Assy.
No
Replace the MAIN Assy.
No
Securely connect the M11 connector.
Yes
Replace the cable (J116).
No
Replace the MAIN Assy.
No
Replace the MAIN Assy.
No
Replace the cable (J117) that
connects between the IR and
MAIN Assys.
No
Replace the MAIN Assy.
No
Replace the MAIN Assy.
No
Replace the MAIN Assy.
• Failure in CN4002 or its peripheral circuits.
KRP-500P
2
3
Failure in the RST IC (IC7002) output or its peripheral circuits.
Failure in the line between the Main microcomputer and M11 connector.
It does not supply a power supply to the module microcomputer.
NG
NG
Replace the IR Assy.
Failure in the IC5001 or its peripheral circuits.
Failure in the IC4001-IC4004 or its peripheral circuits.
3
4
Replace the MAIN Assy.
4

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents