Flowchart Of Failure Analysis For The Video System - Pioneer PDP-4270XA Service Manual

5

5.1.6 FLOWCHART OF FAILURE ANALYSIS FOR THE VIDEO SYSTEM

Flowchart of Failure Analysis for The Video System
⇒ MA3
The input signal is not displayed.
Is the Terrestrial analog signal
not displayed?
No
Is the composite signal input not
displayed?
No
Is the S-video signal input not
displayed?
No
Is the RGB signal input not
displayed?
No
Is the component signal input not
displayed?
No
Is the PC signal input not
displayed?
No
Is the Terrestrial digital signal
not displayed?
No
Is the HDMI signal input not
displayed?
Yes
No problem with the MAIN Assy.
5
6
Yes
⇒ ATV
Yes
⇒ COMP / S1
Yes
⇒ COMP / S1
Yes
⇒ RGB
Yes
⇒ COMP / PC1
Yes
⇒ COMP / PC2
Yes
⇒ DTV
Are the data displayed on the
Yes
"HDMI SIGNAL INFO" page of
the Factory menu correct?
Yes
Does the result of SIG mode
detection on the Factory menu
coincide with the input signal data?
Yes
Replace the MAIN Assy.
6
7
After changing the source
No
equipment, check the "HDMI
SIGNAL INFO" data again.
OK
The source equipment previously
used is in failure.
No problem with the MAIN Assy.
No
Is the sync signal output from
IC5401?
Yes
Is the sync signal input to IC8001?
Yes
Replace the MAIN Assy.
PDP-427XD
7
8
NG
Replace the MAIN Assy.
No
Replace the MAIN Assy.
No
Replace the MAIN Assy.
8
A
B
C
D
E
F
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