Diagnosis; Troubleshooting; No Composite Or S-Video Input Pictures Displayed; General Information - Pioneer PDP-R06XE Service Manual

1

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 TROUBLESHOOTING

A

No composite or S-video input pictures displayed

No composite or S-video
input pictures displayed
Yes
Is the function corresponding
to selected signal input
selected?
Yes
B
Is a signal detected
at IC4804?
1
Yes
Is the signal that is not
C
displayed the main or sub
signal?
Main signal
Are the signals output from
IC4804?
3
(pin 47) (pin 49)
Yes
Are the signals detected at
IC6003?
7
(pin 148) (pin 158)
Yes
D
Are communications
between the microcomputer
and each IC on the MR
MAIN Assy OK?
Yes
Does the symptom
disappear after the MR
MAIN Assy is replaced?
Yes
E
Finished
F
58
1
2
No Select the input select
function corresponding to
the signal being input.
No
Check between the pinjack
and IC4804.
Subsignal
Check around IC4804 and
No
communication between
IC4804 and the
4
microcomputer.
No
Check between IC4804
and IC6003.
8
Check the IC with a
No
communication failure and
around the microcomputer.
No
Failure in the panel
2
3
No TV picture displayed
Yes
Is TV selected with the
Input Selector?
Yes
Is the signal detected at
IC4804?
(pin 57)
Yes
Are the signals output from
No
IC4804?
(pin 42) (pin 45)
Yes
Are the signals detected at
IC6001?
(pin 1) (pin 2)
Yes
Note:
• Diagnosis points
MR MAIN ASSY
• For check the communication with the microcomputer,
refer to the section 6.3 SERVICE FACTORY MODE.
• The encircled numbers denote measuring point in the
Waveforms for Troubleshooting.
PDP-R06XE
3
4
No Select TV with the Input
Selector.
Check around the FE,
No
between the FE and IC4804,
2 and communication between
IC4804 and the microcomputer.
5 6
No
Check between IC4804
and IC6001.
9 10
4