Table of Contents
Advertisement
1
Flowchart of Failure Analysis for The Audio-system Assy
A
Is the sound of the Analog
NO
Is a signal output from FE(U4501)?
broadcasting emitted?
YES
Is a signal input IC4501?
Is a signal output from IC4501?
Is a signal input to IC4701?
Is a signal output from IC4701 ?
Has the signal arrived at CN4007?
Is a signal output from CN3752 ?
Is a signal come to Audio Ass'y
Is a sound output from Audio Ass'y?
Check the speakers and speaker cables.
NO
As for the sound of HDMI, has
Is the sound of HDMI emitted?
the analog input been selected?
YES
Has the signal arrived to CN9003 ?
Check the Flexible cable between
Is a signal input to IC4701?
B
1
2
NO
Check around the FE(U4501).
YES
NO
Check the communications
(2)
50
around the U4501 and between
YES
NO
Check around the IC4501.
(30)(31)
50
YES
NO
Check the communication between
51
52
U4501and microcomputer, and
(22)(23)
between U4501 and IC4701.
YES
NO
Check around IC4701.
(35)(36)
53
YES
NO
Check the communication
between IC4701 and CN4007.
54
YES
NO
Check the Flexible cable between
CN4007 and CN3757.
YES
NO
Check the cables and connector between MAIN
and AUDIO Assy. If it's no problem, replace Audio
54
YES
NO
Check the communication between Audio ass'y
and the microcomputer. If it's no problem,
55
YES
NO
Is a signal output from IC5402?(7)(8)
YES
Check the communication between
IC4702 and IC4701. If it's no problem,
NO
Check the communication between Jack
and CN9003. If it's no problem,replace
YES
NO
Replace or reconnect flexible cable
CN9003 and CN4005.
YES
NO
Check the communication between CN4005
and IC4701and replace broken parts.
YES
PDP-507XC
2
3
NG
Replace Main Ass'y
NG
Replace Main Ass'y
the IC4501.
NG
Replace Main Ass'y
NG
Replace U4501, and repair the failure
NG
Replace Main Ass'y
NG
Replace Main Ass'y
NG
Replace or reconnect flexible
signal cable.
replace Audio Ass'y.
NO
Is a signal output from IC5401?
56
57
YES
Replace
Is a signal input to IC4701 ?
IC5402
NO
replace Main Ass'y
replace IO Ass'y
3
4
points.
cable.
OK
NG
Replace
IC5401
C
4
A
B
C
D
E
F
23
Advertisement
Chapters
Table of Contents
