Pioneer PDP-R04E, Service Manual

Page: 182 / 233

PDP-R04E
131
5 6 7 8
5 6
7
8
C
D
F
A
B
E
B
Image for the component or RGB signals is not displayed
Image for the component or
RGB signals is not displayed
No
Is the function corresponding
to selected signal input
selected?
No Select the corresponding
signal with the Input selector.
Has the signal arrived at
IC8005? Check the communication
between the jack and
IC8005.
Yes
Which signal is not output,
main or subsignal?
Yes
No
B
Is a signal output from
IC8005?
(43), (44), (46), (Pr, Pb, Y)
Check around IC8005 and
check the communications
between IC8005 and the
microcomputer.
Main signal
Is a signal output from
IC8005?
(35), (36), (38),(Pr, Pb, Y)
No
Subsignal
No
B
Yes
Check the communications
between IC8005 and
IC6601.
No
Is the communication
between each IC on the
MR MAIN BOARD Assy and
the microcomputer normal? Check around the IC that is
found to have a failure in
communication and the
microcomputer.
Yes
No
Has the symptom been
settled when the MR MAIN
BOARD Assy is replaced?
The panel is defective.
Yes
No
Finishing troubleshooting
Yes
B
Image from the PC card is
not displayed
No
Is the Function correspond-
ing to selected signal input
selected?
No Select the corresponding
signal with the Input selector.
Is a signal input to IC8005?
(48), (50), (52)
Check the communication
between CN8660 and
IC8005, and CN8660 and
the microcomputer.
Yes
No
Yes
Yes
21
18 17 16
A
Has the signal arrived at
IC6401?
(1), (5), (25), (Y, Pb, Pr)
Check the communications
between IC8005 and
IC6401.
No
24 23 22
Yes
A
Has the signal arrived at
IC6402?
TP6402, 6403, 6404
Check the communications
between IC6401 and
IC6402.
No
30 29 28
A
Has the signal arrived at
IC6601?
(1), (5), (25), (Y, Pb, Pr)
27 26 25
Yes
Yes
A
Has the signal arrived at
IC6602?
TP6604, 6605, 6606
33 32 31
15 14 13
20 19
Check the communications
between IC8005 and
IC6601.
No