Pioneer PDP-R05U Service Manual page 180

1
QQ
3 7 63 1515 0
Image for the component or RGB signals is not displayed
A
Image for the component or
RGB signals is not displayed
No
Is the function corresponding
to selected signal input
selected?
Yes
Has the signal arrived at
IC8005?
B B
Yes
Which signal is not output,
main or subsignal?
Main signal
Is a signal output from
IC8005?
(43), (44), (46), (Pr, Pb, Y)
C
B
16 17 18
Yes
Has the signal arrived at
TE
L 13942296513
IC6401?
(7), (27), (3), (Y, Pb, Pr)
A
22 23 24
Yes
Has the signal arrived at
IC6402?
D
TP6402, 6403, 6404
A
28 29 30
Yes
Is the communication
between each IC on the
MR MAIN BOARD Assy and
the microcomputer normal?
Yes
Has the symptom been
E
settled when the MR MAIN
BOARD Assy is replaced?
Yes
Finishing troubleshooting
www
F
180
1
http://www.xiaoyu163.com
2
No Select the corresponding
signal with the Input selector.
Check the communication
No
between the jack and
IC8005.
Subsignal
Check around IC8005 and
No
check the communications
between IC8005 and the
microcomputer.
Check the communications
No
between IC8005 and
IC6401.
Check the communications
No
between IC6401 and
IC6402.
Check around the IC that is
No
found to have a failure in
communication and the
microcomputer.
No
The panel is defective.
x ao
y
. i
PDP-R05U
2
http://www.xiaoyu163.com
3
8
Is a signal output from
No IC8005?
(35), (36), (38),(Pr, Pb, Y)
19 20 21
Yes
Has the signal arrived at
Q Q
3 6 7 1 3
IC6601?
(7), (27), (3), (Y, Pb, Pr)
25 26 27
Yes
Has the signal arrived at
IC6602?
TP6604, 6605, 6606
31 32 33
Yes
u163
.
3
4
2 9 9 4 2 8
B
1 5 0 5 Check the communications 8 2 9 9 4
No
between IC8005 and
IC6601.
A
Check the communications
No
between IC8005 and
IC6601.
A
m
co
4
9 9
2 8 9 9