42
KRP-M01
1
2
3
4
A
B
C
D
E
F
1
2
3
4
N
o
N
o
Yes
Yes
Is the function corresponding to
selected signal input selected?
Image for the RGB (SCART) input
signal is not displayed.
Select the corresponding signal
with the Input selector.
Is the screen of main side Tuner?
N
o
Specifications that does not
display in the sub-side.
=> RGB
Sub
Main
W
hich signal is not output,
main or sub signal?
Check the circuits between IC5501 and IC4702.
If there was no problem, replace the MAI
N
BLOCK Assy.
Check the circuits between JA7502 and IC5501.
If there was no problem, replace the MAI
N
BLOCK Assy.
N
o
Check around the IC that is found to have failure in
communication and the microcomputer. If there was
no problem, replace the MAI
N
BLOCK Assy.
N
o
Check around IC5501 and check the communications
between IC5501 and microcomputer. If there was
no problem, replace the MAI
N
BLOCK Assy.
N
o
Replace the MAI
N
BLOCK Assy.
Is a signal output from IC5501?
(pins 41, 43 and 45)
Has the signal arrived at IC4702?
(pins 27, 28 and 65)
Yes
Yes
Yes
Is the communication between
each IC (
V
DEC, ASIC) on the
MAI
N
BLOCK Assy and the
microcomputer normal?
Yes
Has the signal arrived at IC5501
(RGBS
W
)?
21
20
19
17
16
1
8
16
IC5501 - pin 45 (G out)
V
: 500 m
V
/div H: 20
μ
S/div
17
1
8
IC5501 - pin 41 (R out)
V
: 500 m
V
/div H: 20
μ
S/div
19
IC4702 - pin 65 (GY)
V
: 500 m
V
/div H: 20
μ
S/div
20
IC4702 - pin 27 (BCB)
V
: 500 m
V
/div H: 20
μ
S/div
21
IC4702 - pin 2
8
(BCR)
V
: 500 m
V
/div H: 20
μ
S/div
Waveforms
Input signal: PAL Color-bar (SCART RGB terminal)
IC5501 - pin 43 (B out)
V
: 500 m
V
/div H: 20
μ
S/div
Go to .
V
Summary of Contents for krp-m01
Page 8: ...8 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 2 3 PANEL FACILITIES ...
Page 9: ...9 KRP M01 5 6 7 8 5 6 7 8 A B C D E F Remote Control Unit ...
Page 14: ...14 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 4 BLOCK DIAGRAM 4 1 OVERALL WIRING DIAGRAM ...
