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Diagnosis Flowchart Of Failure Analysis - Pioneer krp-m01 Service Manual

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5.2 DIAGNOSIS FLOWCHART OF FAILURE ANALYSIS

A
[1] WHOLE UNIT
Flowchart of Failure Analysis for The Whole Unit
START
According to the statuses of the LEDs,
go to the corresponding flowchart.
B
No LED lit.
Turn the units on.
The red LED remains lit.
Either the red or blue LED
flashes.
C
The red and blue LEDs
alternately flash.
The blue LED is lit.
(failure in video or audio)
Standby-Related Problems
D
The LEDs on the Display do
not light.
E
The LED on the MR does
not light.
F
34
1
2
Note: Check that the main power switch is set to ON, that the system cable is connected,
and that the AC power cords of the Media Receiver and display are both plugged in.
To "Standby-Related Problems"
To "Power-On-Related Problems"
To "PD/SD-Related Problems"
To "System-Connection-Related
Problems"
To "Video-Display-Related Problems"
or "Audio-Related Problems"
Is STB 3.4 V ON?
(Check Pin 2 of CN7001.)
Yes
Are AC_DET and MSW_DET of the
Display POWER SUPPLY Unit high?
Yes
The LED does not light if AC_DET and MSW_DET are low.
[SM for the Display]
Failure analysis of the Display MAIN Assy => PM1
Is STB 3.4 V ON? (Check the IF micro-
computer power on the MR MAIN
BLOCK Assy.)
Yes
Is AC_DET of the MR POWER SUPPLY
Unit high?
Yes
The LED does not light if AC_DET is low.
[SM for the MR]
Failure analysis of the MR MAIN BLOCK Assy => MA1
KRP-M01
2
3
Note:
MR and Display in this chapter denote the following:
MR: Media Receiver (KRP-M01)
Display: PLASMA DISPLAY (KRP-600P, KRP-500P)
• You can check ON/STB and PD/SD statuses of the display with the green
and red LEDs on the DIGITAL Assy. If neither the green nor red LED is lit,
it is likely that STB power is not supplied.
(Failure in the POWER SUPPLY Unit or the unit is PASV-STB state.)
No
Check that the cable is firmly connected between the
Display POWER SUPPLY Unit and Display MAIN Assy.
[SM for the Display]
Failure analysis of the Display POWER SUPPLY Unit => PP1
No
Replace the Display POWER SUPPLY Unit.
No
Check that the cable is firmly connected between the
MR POWER SUPPLY Unit and MR MAIN BLOCK Assy.
[SM for the MR]
Failure analysis of the MR POWER SUPPLY Unit => PS1
No
Replace the MR POWER SUPPLY Unit.
3
4
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