Sharp HT-CN300 Service Manual page 28

HT-CN300
VIDEO PWB-B7
A
CNP430
FW11
1
1
2
OSD_CS1
3
V_MUTE
4
B V_SW2
5
DATA
6
V_SW1
7
CLK
8
V_REC_MUTE
9
FUNC_DVD
10
D_GND
11
AC_RLY
11
CNP704
TO
DSP PWB
P20 5 - H
C
CNP431
– B
1
- 5 V
2
GND_VIDEO
3
SW_5V + B
CNS103
4
ASSIST
FROM
5
UN_SW_5V + B
AMP. PWB
6
UN_SW_GND
P24 1 - G
D
E
F
AC POWER
SUPPRY CORD
AC 120 V, 60 Hz
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
1
VIDEO SIGNAL
– B
+ B
L452
100µH
+ B
– B
C452
100/16
LC74763
C437
20P(CH)
1 VSS1
C438
X437
2
X-IN1
20P(CH)
14.32 MHz
3 X-OUT1
4 HSYNC_OUT
X-IN2
5
6 X-OUT2
7 VSYNC_OUT
8 CS
R408 1K
9 SIN
R409 1K
10 SCLK
R410 1K
11 SECAM
C408 C407 12
525/625
100P 100P
13 NTSC/PAL
C409
14 3.58/4.43
100P
15 RST
C417
4.7/50
Q416
KRC107 M
C
B
E
C416
0.022
0.0047
F511
4A/125V
L511
AC LINE FILTER
TRANSFORMER
2 3
Figure 28 SCHEMATIC DIAGRAM (15/17)
L451
100µH
C451
100/16
C450
100/16
L450
100µH
C455
0.022
C432
IC401
TC432
20P
+ B
OSD.
L432
5.6µH
VDD1 30
C433
29
SYNC_DET
24P(CH)
VCO_OUT 28
VCO_IN 27
FC 26
R435 R436
AMP_OUT 25
120
6 . 8 K
AMP_IN 24
R437
PD_OUT 23
1 . 5 K
C436
VSS2 22
SEPC
21
SYNC_IN 20
C430
CV_CR 19
0.022
CV_IN 18
+ B
VDD2 17
CV_OUT 16
RY511
C511
D521
DS1SS133
T501
SUB
D522 1N4004S
D523 1N4004S
C521
0.047
D524 1N4004S
(ML)
D525 1N4004S
4
– 28 –
R483 1K
R480 1K
R481 1K
R482 1K
C483
C482 C481 C480
0.001
0.001 0.001 0.001
+ B
24P(CH)
C434 0.022
R434 1K + B
C435
1/50
(N.P.)
0.0068
C476
R477
1/50
220
C477
0.0012
IC404
+ B
TK15406M
R428
2 . 2 K
VIDEO DRIVER
C427
4.7/50
R427
4 I N NC 3
2 . 7 K
5 GND OUT 2
+ B
6 VCC STBY 1
C422 C421
0.022 33/16
IC501
KA7805AP
VOLTAGE
REGULATOR
+ B
1 I N OUT 3
GND
C522
470/35 2
D526
DS1SS133
5
R46
75
– B
C4
33/
– B
14 13 12 11
C454
0.022
C453
0.022
1 2 3 4
+ B
C4
C463
33
33/16
R4
R463
7
75
R466
1K
Z460
C
DZ6.2BSB
1
C420
R420
470/6.3
75
Q521
R523
C KTC3198 GR
100
B
C523
E
R522
1000/6.3
47K
6