JVC LT-26DB1BU/AX Service Manual page 51

MAIN PWB CIRCUIT DIAGRAM (20/28) [SCART2]
5
8Pin(Function Select/Slow Switching)
9.5V ~ 12V --> 4:3 Mode
4.5V ~ 7V -->16:9 Mode
0V ~ 2V --> TV Mode
16Pin(RGB Control/Fast Blanking)
1V ~ 3V -->RGB Mode
0V ~ 0.4V -->CVBS Mode
D
JP701
21
GND
20
CVBSI
19
C/LUMA
18
GND(R)
17
GND(V)
16
RGBC
SC2_RED
15
R/CHROMA
14
GND(D)
13
GND(R)
12
DATA1
SC2_GREEN
11
GREEN
10
DATA2
9
GND(G)
8
FNS
SC2_BLUE
7
BLUE
SC2_LI
6
AIL
5
GND(B)
4
GND(A)
SC2_LO
3
AOL
SC2_RI
2
AIR
SC2_RO
1
C
AOR
TSSM-0741-21(STRAIGHT)
C711
10uF/16V/MVK/S
R721
153/F/1005
SCART2_LO
MAIN PWB (19/28)
MAIN PWB
(12/28)
C714
10uF/16V/MVK/S
R724 153/F/1005
SCART2_RO
B
+3V3_A
R712 R713
4021/F/1005 103/1005
SC2_FB
5
+
7
FB2
6
-
A
U661B
R715 LM393MX
162/F/1005 C716
104p/50V
Comparator for trigerring
on 0.94V Fast Blank Signal
All location are from 701 to 740
5
4
RV701 R702
SV060305E101N 750/F/1005
R704 680/F/1005
R705 000/1005
RV703
SV060305E101N
R708 303/1005
RV705
SV060314B431N
U663
TL072CD C707
R719 C710 104p/50V
683/F/1005 100p/50V/1005
2 - -
SC2_L_OUT_O
1
3
OPAMP_P + +
6
- -
SC2_R_OUT_O
7
5
+ +
R725 C715
683/F/1005 100p/50V/1005
MAIN PWB
Scart2_Mute
(19/28),(22/28)
MAIN PWB
(12/28)
4
(No.YA698<Rev.001>)2-45
3
SC2_RED
SC2_GREEN
SCART2_CVBS
MAIN PWB (12/28)
SC2_CVBSO
SC2_BLUE
SC2_FB
R706
750/F/1005
MAIN PWB (7/28)
SCART2_ID
R709
SCART Mode Detection
103/1005 SC2_LI
Attenuation = 10K/(10K+30K) = 0.25
+12V
L703
BLM18PG300SN1D
C708 SC2_RI
106p/25V/3216
SC2_LO
SC2_RO
Q704
2
KTD1304
R730
102/1005
Q705
2
KTD1304
R731
102/1005
3
2-46(No.YA698<Rev.001>)
2
R703 C701
RV702 750/F/1005 OPEN-331p/50V/1005
SV060305E101N
R707 C702
RV704 750/F/1005 OPEN-331p/50V/1005
SV060305E101N
R710 C703
750/F/1005 OPEN-331p/50V/1005
RV706
SV060305E101N
L701
CIL21J1R8KNE
RV707 R714
SV060314B431N C704 224/1005
102p/50V/1005
L702
CIL21J1R8KNE
RV708 R717
SV060314B431N C705 224/1005
102p/50V/1005
C709
L704 102p/50V/1005 R718 101/1005
CIL21J1R8KNE C706
10uF/16V/MVK/S
RV709 R720
SV060314B431N 224/1005
C713
L705 102p/50V/1005 R722 101/1005
CIL21J1R8KNE C712
10uF/16V/MVK/S
RV710 R723
SV060314B431N 224/1005
MAIN PWB ASS'Y (20/28)
[SCART2]
HU-71100005
2
1
SCART2_R
SCART2_G D
MAIN PWB
SCART2_B
(12/28)
SCART2_LI
C
SCART2_RI
SC2_L_OUT_O
B
SC2_R_OUT_O
A
1
lt-26_32db1bu_0514_18/30_0.0