ViewSonic N2750w-1 Service Manual page 15

6.4 TV-Tuner
I111
FQ-1236MK3
1
NC/AGC
2
NC/VTout
3
Vb(+5V)
TSCL
4
SCL
TSDA
5
SDA
6
AS
9
AF-R
10
AF-L
TV_2ndF
11
2ndIFout
VFOUT
12
CVBSout
13
VIF(+5V)
AFOUT
14
AFout
R207
NC
TV_TUNER FQ1236MK3 ONLY
AND MOVE S_VIDEO TO
VIDEO DECODER PAGE
L128
BEAD/200R
ViewSonic Corporation
L125
BEAD/200R
+5VS
C196
47uF/16V
5 AV1_AFR
5 HD_AFR
R189 100R SCL
SCL 3,5,6,7,8,11
R190 100R SDA
SDA 3,5,6,7,8,11 5 AV1_AFL
5 HD_AFL
R201 22R
1TV_2ndF 5
L126
+5VS
BEAD/200R
C199
47uF/16V
L127
BEAD/200R
R205
18R L157 3.3uH
1CVBS_TV
1CVBS_TV 6,7
11 AF_SEL0
C386 C201 R488
330p 330p 56R
10uF/50V
C202
1TV_AFmono 5 11 AF_SEL1
R209
1K
C203
68n
14
Confidential - Do Not Copy N2750w-1
+12V
C194
100n
+12V
12 16
X0 VDD
14
X1
15
X2
I_AFL C197 10uF/50V
11 13
X3 X
1
Y0
5 3 C198 10uF/50V
Y1 Y
2
Y2
I_AFR
4
Y3
6
/INen
10 7
A VEE
9 8
B VSS
I113
HEF4052D
R202 NC R203 0R
+12V
R204 10K
+12V
Q107
2
R206 10K 1 MMBT3904
3
R208 10K
+12V
2 Q108
R210 10K MMBT3904
1
3
P108
RCA JACK 1X2
1
3
2
AV_AFR 5
AV_AFL 5
L129 C204
YPbPr-Audio-L
BEAD/600R
R211 15K C205 C206 10uF/50V
100p 100p
L130 C207
YPbPr-Audio-R AGND AGND
BEAD/600R
C208 C209 10uF/50V
R212 15K
100p 100p
AGND AGND AGND
I_AFL
I_AFR