Pioneer KRP-500P - Page 52

52
KRP-500P
1
2 3 4
A
B
C
D
E
F
1
2 3 4
Is the TCP control signal normal?
No
NG
NG
Ye s Ye s
No
Are the FFC cables properly
connected?
Replace the DIGITAL Assy.
Properly connect the FFC cables.
The abnormality is associated with
one ADDRESS or one TCP.
Diagnose the ADDRESS Assy.
In most cases of damage on one line,
the panel chassis must be replaced.
If the FFC cable that connects the DIGITAL and ADDRESS Assys is in failure,
the abnormality is associated with one address in most cases.
Replace the panel chassis.
No
NG
Ye s
Ye s
Ye s
No
Is the 15P connector connected
properly to the socket?
Reconnect the connector properly.
NG
Is the waveform of the SCAN IC
control signal from the Y DRIVE
Assy normal?
No
Replace the Y DRIVE Assy.
The abnormality is associated
with a single scan line.
Diagnose the SCAN Assy.
Replace the SCAN IC.
Replace the panel chassis.
Failure analysis for the
drive system => DR3
Failure analysis for the
drive system => DR4
Is the waveform normal when the
voltage is applied to the panel?
(See the oscilloscope photos.)
Note1
Note 1:
In a case where confirmation of the waveform for a particular line is impossible with
an oscilloscope, it is possible to identify a defective line by lighting a particular line,
using the following commands: (The SCAN IC outputting each line refers to the table.)
PON
FAY
MKRS01
BSMS01 (Command for reducing phosphor burn-in)
$250000∗∗∗∗ (In place of ∗∗∗∗, input a figure between 0001 and 1080, which denotes
an ordinal number of a particular line.)
With the above commands, a particular line lights. Be careful to light a line for as
short a time as possible, to avoid phosphor burn-in.
After a particular line is identified, display an all-white screen to protect the screen
from burn-in.
IC No.
No 1
No 2
No 3
No 4
No 5
No 6
No 7
No 8
No 9
No 10
No 11
No 12
No 13
No 14
No 15
No 16
Line Number
66
68
68
68
68
68
68
66
66
68
68
68
68
68
68
66
Object Line
0001 to 0066
0067 to 0134
0135 to 0202
0203 to 0270
0271 to 0338
0339 to 0406
0407 to 0474
0475 to 0540
0541 to 0606
0607 to 0674
0675 to 0742
0743 to 0810
0811 to 0878
0879 to 0946
0947 to 1014
1015 to 1080