Service manual

108
26. RA-6 Video Circuit Troubleshooting
IC3303
D.R.C.
CXD29095Q
Y : 8 BIT C : 8 BIT
YP
B
P
R
8 BIT
INPUT SIGNAL 480i ONLY
164-171 122-154174-181
63
50
31
Y
P
B
P
R
6-13
17-24
IC3304
8 BIT
A/D
TLC5733A
FROM
YUV
SW.
IC305
P
R
0.9Vp-pP
B
0.9Vp-p
Y :1.0Vp-p
41-11
215
210
208
44-71
Y
P
B
P
R
YP
B
P
R
8 BIT
YP
B
P
R
8 BIT
IC3408
M.I.D.
CXD9509
P
R
0.8Vp-pP
B
0.8Vp-p
Y :0.9Vp-p
[MAIN]480P/1080i
(P&P FREEZE) (V5.6)
[SUB] 480i(RF,V1-4)
41-11
YP
B
P
R
8 BIT
44,46,42
YP
B
P
R
IC3410
8 BIT D/A
CXD2309Q
3.2Vp-p
DIGITA
L
3.2Vp-p
DIGITA
L
3.2Vp-p
DIGITA
L
16,11,8 1,14,9
Y P
B
P
R
Y P
B
P
R
2 7 12
SELECT PINS
IC3414
Y P
B
P
R
SWITCH
M52055FP
IC704 PIN 52
L :16,11,8
H : 1,14,9
Y : 1.05V
(1.85Vp-p)
P
B
: 1.05Vp-p
P
R
: 1.05Vp-p
3
5
6
Y
B-Y
R-Y
Y: 0.5Vp-p
B-Y : 0.5Vp-p
R-Y : 0.5Vp-p
20
21
22
Y
B-Y
R-Y
64
63
62
IC309
VIDEO
PROCESS
R : 2.3Vp-p
G :2.1Vp-p
B : 2.0Vp-p
TO
C
BD.s
Y : 1.05Vp-p
P
B
: 1.05Vp-p
P
R
: 1.05Vp-p
FROM
COMP.
SWITCH
IC306
FIGURE 26-4 - DRC AND MID PROCESSING RA-6 CHASSIS
26.4TVP14 1476 6/13/02
A BOARD