PDP-LX5080D
58
1
2
3
4
1
2
3
4
C
D
F
A
B
E
Is the function corresponding to
selected signal input selected?
Select the corresponding signal
with the input selector.
No
Replace the flexible cable.
No
Check the flexible cables between the CN8804
and CN4004 or around of pin jack.
No
Check the circuit between IC4701 and IC5001.
If there was no ploblem, replace the MAIN Assy.
No
Check around IC4701 and check the communications
between IC4701 and the microcomputer.
If there was no ploblem, replace the MAIN Assy.
No
Check around the IC that is found to have a failure
in communication and the microcomputer.
If there was no ploblem, replace the MAIN Assy.
No
Replace the MAIN Assy.
Yes
Yes
Image for the component signal
is not displayed.
=> COMP/PC1
Has the signal arrived at IC4701
(RGBSW) ?
(pins 70, 72, 74)
Yes
Which signal is not output,
main or sub signal?
Is a signal output from IC4701?
(pins 20, 22, 24)
Has the signal arrived at IC5001
(ADC)?
(pins 43, 48, 54)
Yes
Yes
Is the communication between
each IC (ADC, ASIC) on the
MAIN Assy and the microcomputer
nomal?
Yes
Yes
Sub
Main
24
23
22
27
26
25
30
29
28
22
IC4701 - pin 70
V: 500 mV/div H: 10
μ
S/div
23
IC4701 - pin 72
V: 500 mV/div H: 10
μ
S/div
27
IC4701 - pin 24
V: 500 mV/div H: 10
μ
S/div
28
IC5001 - pin 43
V: 500 mV/div H: 10
μ
S/div
Waveforms
Input signal: Color-bar (Component 1080i)
24
IC4701 - pin 74
V: 500 mV/div H: 10
μ
S/div
29
IC5001 - pin 48
V: 500 mV/div H: 10
μ
S/div
25
30
IC4701 - pin 20
V: 500 mV/div H: 10
μ
S/div
IC5001 - pin 54
V: 500 mV/div H: 10
μ
S/div
26
IC4701 - pin 22
V: 500 mV/div H: 10
μ
S/div
Flowchart of Failure Analysis for The Video System
Is the screen of main side
Analog/Digital TV?
No
Specifications that does not
display in the sub-side.
Summary of Contents for KURO PDP-LX508D
Page 19: ...PDP LX5080D 19 5 6 7 8 5 6 7 8 C D F A B E ...
Page 20: ...PDP LX5080D 20 1 2 3 4 1 2 3 4 C D F A B E 4 BLOCK DIAGRAM 4 1 OVERALL WIRING DIAGRAM 1 2 ...
Page 22: ...PDP LX5080D 22 1 2 3 4 1 2 3 4 C D F A B E 4 2 OVERALL WIRING DIAGRAM 2 2 ...
Page 23: ...PDP LX5080D 23 5 6 7 8 5 6 7 8 C D F A B E ...
Page 159: ...PDP LX5080D 159 5 6 7 8 5 6 7 8 C D F A B E ...
Page 170: ...PDP LX5080D 170 1 2 3 4 1 2 3 4 C D F A B E 10 6 PANEL CHASSIS SECTION ...