44
KRP-M01
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Is the function corresponding to
selected signal input selected?
Select the corresponding signal
with the input selector.
N
o
N
o
N
o
N
o
Yes
Image for the PC signals is not
displayed.
=> COMP/PC2
Yes
Is a signal output from IC5501
(RGBS
W
)? (pins 30, 32, 34)
Has the signal arrived at IC4801
(ADC)? (pins 43, 48, 54)
Yes
Yes
3
8
41
37
36
40
39
N
o
Specifications that does not
display in the sub-side.
Has the signal arrived at IC5501
(RGBS
W
)? (pins 2, 4, 6, 14, 15)
SUB
Is the screen of main side Tuner?
W
hich signal is not output,
main or sub signal?
Yes
MAI
N
33
32
35
34
31
Check around IC5501 and check the communications
between IC5501 and microcomputer.
If there was no problem, replace the MAI
N
BLOCK Assy.
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
Replace the MAI
N
BLOCK Assy.
Yes
Is the communication between
each IC (ADC, ASIC) on the
MAI
N
BLOCK Assy and the
microcomputer normal?
31
IC5501 - pin 2 (G in)
V
: 500 m
V
/div H: 10
μ
sec/div
32
IC5501 - pin 4 (B in)
V
: 500 m
V
/div H: 10
μ
sec/div
33
IC5501 - pin 6 (R in)
V
: 500 m
V
/div H: 10
μ
sec/div
34
35
IC5501 - pin 14 (HD in)
V
: 1
V
/div H: 10
μ
sec/div
(polarity is no care)
IC5501 - pin 15 (VD in)
V
: 1
V
/div H: 2 msec/div
(polarity is no care)
40
IC4
8
01 - pin 43 (B)
V
: 500 m
V
/div H: 10
μ
sec/div
36
IC5501 - pin 34 (G out)
V
: 500 m
V
/div H: 10
μ
sec/div
41
IC4
8
01 - pin 54 (R)
V
: 500 m
V
/div H: 10
μ
sec/div
37
IC5501 - pin 32 (B out)
V
: 500 m
V
/div H: 10
μ
sec/div
3
8
39
IC5501 - pin 30 (R out)
V
: 500 m
V
/div H: 10
μ
sec/div
IC4
8
01 - pin 4
8
(G)
V
: 500 m
V
/div H: 10
μ
sec/div
Waveforms
Input signal: Color-bar (PC SXGA/60 Hz)
N
G
Check around a C
N
8503.
Check the FFC (J201) between MAI
N
BLOCK and FRO
N
T_IO
Assys. If there was no problem, replace the FRO
N
T_IO Assy.
Check the circuits between IC5501 and IC4801.
If there was no problem, replace the MAI
N
BLOCK Assy.
Содержание krp-m01
Страница 8: ...8 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 2 3 PANEL FACILITIES ...
Страница 9: ...9 KRP M01 5 6 7 8 5 6 7 8 A B C D E F Remote Control Unit ...
Страница 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 ...
Страница 121: ...121 KRP M01 5 6 7 8 5 6 7 8 A B C D E F ...