PDP-4271HD
94
1
2
3
4
1
2
3
4
C
D
F
A
B
E
No
NG Replace cable between SIDE
Assy and SIDE Assy.
NG
Replace IC5402.
NG Check around IC4702. If there
was no ploblem replace IC4702.
Yes
Check the cables and connector
between MAIN and AUDIO Assys.
If it's no problem, replace Audio
signal cable.
No
Check the communication between
AUDIo Assy and the microcomputer.
If it's no problem, replace AUDIO
Assy.
No
Yes
Yes
Is a signal come to AUDIO Assy?
Yes
Yes
Yes
Yes
Yes
Check the speakers and speaker
cables.
Is the cable between SIDE Assy
and CN8801 connected normal?
No
Check the flexible cable between CN8802
(CN8803) and CN4004 (CN4005).
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Is a signal input to IC4701?
No
Connect the cable , then check
again.
Check the communication between
Jack and CN8802.If it's no problem,
replace IO Assy.
No
Replace or reconnect flexible
cable.
No
No
No
Is a signal output from IC5402?
Is a signal output from IC4702?
NG Check the communication between
IC4702 and IC4701. If it's no problem,
replace MAIN Assy.
Yes
Yes
Yes
Yes
Yes
Yes
Is a signal input to IC4701?
Replace or reconnect flexible
cable.
No
Replace or reconnect flexible
cable.
No
Check the communication between
CN4005 and IC4701and replace
broken parts.
No
Replace or reconnect flexible
cable.
Select the function of Home
Media Gallery.
No
Check the communication between
CN4004 and IC4701and replace
broken parts.
No
Check the communication between
CN4004 (CN4005) and IC4701and
replace broken parts.
No
Check the communication between
CN4005 and IC4701and replace
broken parts.
Is the sound of side analog input
source output?
Is the sound of rear analog input
source output?
No
As for the sound of HDMI, has the
analog input been selected?
No
Check the communication
between jack and CN8803.
If it's no problem, replace IO Assy.
Has the signal arrived to CN8803?
Check the Flexible cable between
CN8803 and CN4005.
Has the signal arrived to CN8802?
Check the flexible cable between
CN8802 and CN4004.
Is a signal input to IC4701?
Yes
Check the Flexible cable between
HNM Assy and CN4017.
Yes
Yes
Yes
Is a signal input to IC4701?
Is a signal input to IC4701?
Is the sound of HDMI input sound
output?
No
No
Has the function (Home Media
gallery) is selected in Home Menu?
No
Is the sound of PC output?
Finishing troubleshooting.
Is the sound of Home Media
Gallery output?
Is a sound output from
AUDIO Assy?
b
c
a
Flowchart of Failure Analysis for The Audio System
Содержание PDP-4270HD
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Страница 189: ...PDP 4271HD 189 5 6 7 8 5 6 7 8 C D F A B E Block Diagram R2S11002AFT MAIN ASSY IC4701 AV SW ...
Страница 190: ...PDP 4271HD 190 1 2 3 4 1 2 3 4 C D F A B E Block Diagram R2S11001FT MAIN ASSY IC4901 Component SW IC ...