Pioneer PDP-5000EX, Service Manual

Page: 77 / 204

PDP-5000EX
77
5 6 7 8
5 6
7
8
C
D
F
A
B
E
Flowchart of Failure Analysis for The MAIN Assy (2)
Flowchart of Failure Analysis
for The MAIN Assy (3)
Are the displayed on the
"SG MODE: ANA MVDEC Y"
of the Factory menu correct?
Is the signal output from IC4601?
(pin 49, 47)(Waveforms
1
,
2
)
Is the signal input to IC5402?
(pin 148, 158)(Waveforms
5
,
6
)
Is the signal input to IC5403?
(pin 1, 2)(Waveforms
7
,
8
)
Is the signal output from IC4601?
(pin 45, 42)(Waveforms
3
,
4
)
No Sub
No No
The input signal is not displayed.
Is the selected input signal a
composite signal?
Is the selected input signal a
s-video signal?
Is the selected input signal a
main or sub input signal?
Is the selected input signal a
main or sub input signal?
Yes
Yes
No
Are the displayed on the
"SG MODE: ANA SVDEC Y"
of the Factory menu correct?
No
Main
Replace the MAIN Assy.
Failure analysis for the
MAIN Assy.
⇒
MA3
Is the signal input to IC4601?
(pin 85) Is the signal input to IC4601?
(pin 85)
Yes Yes
Yes Yes
Failure in the line between the JA4601 and IC4601.
Are the displayed on the
"SG MODE: ANA MVDEC Y"
of the Factory menu correct?
Sub
No No
No
Are the displayed on the
"SG MODE: ANA SVDEC Y"
of the Factory menu correct?
No
Main
Replace the MAIN Assy.
Is the signal input to IC4601?
(pin 93, 95) Is the signal input to IC4601?
(pin 93, 95)
Yes
Yes
Yes Yes
Yes
Yes
Yes Yes
Failure in the line between the CN4601 and IC4601.
No No
Replace the MAIN Assy.
Failure in the line between the IC4601 and IC5402
or IC4601 and IC5403.
No No
Replace the MAIN Assy.
IC4601 and its peripheral circuits are in failure.
Replace the MAIN Assy.
IC5402 and its peripheral circuits are in failure.
Replace the MAIN Assy.
IC5403 and its peripheral circuits are in failure.
No
A
1
IC4601 - pin 49
V: 500 mV/div H: 20
µ
sec/div
2
IC4601 - pin 47
V: 500 mV/div H: 20
µ
sec/div
3
IC4601 - pin 45
V: 500 mV/div H: 20
µ
sec/div
4
IC4601 - pin 42
V: 500 mV/div H: 10
µ
sec/div
5
IC5402 - pin 148
V: 200 mV/div H: 20
µ
sec/div
6
IC5402 - pin 158
V: 200 mV/div H: 20
µ
sec/div
7
IC5403 - pin 1
V: 100 mV/div H: 20
µ
sec/div
8
IC5403 - pin 2
V: 100 mV/div H: 20
µ
sec/div
Waveforms
Check if Function corresponding to the input signal is selected.
Check also function settings, such as the HDMI setting, on the menu.