BBK DV975S User manual

SERVICE MANUAL
DV975S

SW1 1 SW2 2 SW3 3 SW4 4
DO 5
DIN 6
VSS 7
CLK 8
STB 9
KEY1 10 KEY2 11
KEY3 12
KEY4 13
VDD 14
S1 15
S2 16
S3 17
S4 18
S5 19
S6 20
S7 21
S8 22
S9
23
S10
24
S11
25
S12/G1
26
VEE
27
S13/G1
28
S14/G9
29
S15/G8
30
S16/G7
31
G6
32
G5
33
G4
34
G3
35
G2
36
G1
37
VDD
38
LED4
39
LED3
40
LED2
41
LED1
42
VSS
43
OSC
44
U401
UPD16312
C401
104
C403
101
C404
101
1 2 3
U402 HS0038A2
K403 K401 K402
D401
1N4148
-25V GRID5
GRID4
GRID3
GRID2
GRID1
VCC
SEG11 SEG10 SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
VCC
VFDST
VFDCK VFDAT
VCC
KEY1 KEY2 KEY3 KEY4
GND
SW4
SW3
SW2
MSW
GND
SEG12 SEG13 SEG14 SEG15 SEG16
VCC
KEY3 KEY2 KEY1
-25V
FIL+
FIL-
SEG1
VFDST VFDCK VFDAT IR
GND
GND
C405 104
R415 100
IR
CPU+3.3V
R405 33K
R401 33K R402 33K R403 33K R404 33K
R406 1K R407 1K R408 1K R409 1K R410 1K
R411 33K
R412 33K
R413
33K
R414 33K
GRID6 GRID5 GRID4 GRID3 GRID2 FIL- FIL+ SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1
R416 10K
VCC C406
101
R417 10K
VCC
TC401
100uF/16V
R418 10R
GRID1
GRID6
R430 330R
CPU+3.3V
SW1
R429 1K
LED V402
8550
STB CPU+3.3V
GP5
2
GP4
3
GP3
4
vdd
1
GP2 5 GP1 6 GP0 7
GND 8
U403 12C508A
R428 10K
R424 10K
ASTB
IR
C408 104
STB
R423 10K
SW1
R419 10K
R427 10K
LED
V405 8050
R425 10K
R421 10K
R426 0R(DNS)
R420 0R
R422 10K
TC404
100UF/10V
C407 104
D403 D402
TC403 22uF/16V
CPU+3.3V
2 3 4 1 5 6
XS402 XS06
ASTB
R432 330R
VCC
R431 1K
LED1 V403
8050
R434 330R
R433 330R
LED402 LED R436 330R
VCC
R435 1K
LED2 V404
8050
LED403 LED
R438 330R
R437 330R
LED404 LED
LED405 LED
R440 330R
R439 330R
PLED
OLED1
LED1
LED2
LED3
F1 1 F1 2
P16 4 P13 7 P14 6 P15 5 P12 8 P11 9 P10 10
P9 11 P8 12 P7 13 P6 14 P5 15 P4 16 P3 17 P2 18 P1 19
NC 23 NC 24 NC 25 NC 26
5G 31 6G 32 1G 27 2G 28 3G 29 4G 30
F2 34 F2 35
NC 20 NC 21 NC 22
VFD401 VFD-35
2 3 4 1 5 6 7
XS401 XS07
2 1XS404
XS02
2 1XS403
XS02
OLED1 GND
OLED2 GND PLED
GND SW1
OLED2
V406 PNP-A
R441 330R
R442 1K
LED3
PLED1
VCC
2 3 4 1XS405
XS03
PLED1

U503
LM431A
C515
104
L505
10uH/1A
C506 102
L506
10uH/2A
BC501
~275V 104
L501
F501
T1.6A/250V
R
K A
!
!
!
R510 4.7K
R509 2.7K
R508 10K
R506
330
R503 39K/2W
!
!
U502 2501
TC502
10uF/50V
TC501
47uF/400V
D505
HER107
C502
103/1KV
C503 101/1KV
L503 FB
BC503
~400V 221
C513
101
C509 101
C514
101
C511 101
+9V
TC504 470uF/16V
TC511 100uF/16V
TC512
47uF/50V
TC505 1000uF/10V
TC509
1000uF/10V TC510
1000uF/10V
D508
HER105
C507 101
TC503
470uF/16V
R511
220R/1W
R507 1K
R515 300
R501
680K 2W
! ! !
IN
1
GND
2
OUT 3
U504
LM7805
TC508 100uF/16V SA+5V
D510 HER303
ZD501
5.1V
D509 SR303
D511 HER105
D512
HER105
TC513 100uF/16V
D503 1N4007
D502 1N4007
D504 1N4007
D501
1N4007
C508 104
-9V
ZD502 9.1V/1W
2 3 4 6 710
11
9
12
13
14
15
16
TR501 EI128/8-2
TC515 470uF/25V
D513
HER105
C516
101 R512
22K
R514 10K
R513 1K
D514 1N4007
D515 HER203
+3.3V
STB
CPU3.3V
V502 2N5551
BCN501 ~220V
R504 30K
R516 1.5K D517 HER105
R502 1R/1W
C501
101/1KV
U505
IRFBC20
DRV 5
VCC 6
NC 7
HV 8
ADJ
1
FB
2
CS
3
GND
4
U501 NCP1200
R517
720K/1W
D507 1N4148
C517
104
CPU3.3V
A K
G
U506 MCR100-6
R518
10K
R520
10R/2W
L507 10uH/2A
TC506
1000uF/10V
C510 104
+5V
D518 HER303
D516 JUMPER
R521 100R
1/4W
ZD503
3.3V
TC516 47uF/50V
STB CPU+3.3V -21V FL+ FL- GND
+5V
2 3 4 1 5 6
CN502 XS06 2.5mm
+5V +3.3V
2 3 4 1 5 6 7
CN501 XS07 2.0mm
VCC
2 3 4 1 5 6 8 7
CN503 XS08 2.0mm
CPU+3.3V GND +3.3V SA+5V GND +9V GND -9V
FL+ FL- -21V
C508 104

SW1 GND
K901 6x6x1
LED901 LED
PLED
PLED GND SW1
PLED1
2
13
2 3 4 1
XS901 XS04
PLED1

2 1XSA01
XS02
LEDA01 LED
OLED1 GND

GND OLED2
LEDB01 LED 2
1XSB01
XS02

123
123 456
A B C D
E
A B C D E
F
R703 68R VIN
1
VCC
2
GND
3
JK705 OPTICAL
A5VV
CC
AGND
VGND
LFE SL SR L+ R+
L702 FB L701 FB L704 FB L703 FB L706 FB L705 FB
C702 102 C701 102 C704 102 C703 102
12
C706 102
12
C705 102
C718 104
SPDIF
L712 FBSMT L711 FBSMT
VIDEO_Y VIDEO_C
C717 104
R714 150R C733
101
C732 47pF
L724 1.8uH
VGND
R713 150R C731
101
C730 47pF
L722 1.8uH
VGND
R709 150R C723
101
C722 47pF
L714 1.8uH
VGND
R710 150R C725
101
C724 47pF
L716 1.8uH
VGND
R711 150R C727
101
C726 47pF
L718 1.8uH
VGND
R712 150R C729
101
C728 47pF
L720 1.8uH
VGND
L713 0R L715 0R L717 0R L719 0R L721 0R L723 0R
Y3 Y2 Y1 Y4
Y5 Y6
A5VV
VGND
A5VV
VIDEO_U
VIDEO_V
A5VV
VIDEO_C
VGND
VIDEO_Y
A5VV
VGND
VIDEO_COMP
A5VV
VIDEO_Y1
VGND
VD701 1N4148 VD702 1N4148 VD703 1N4148 VD704 1N4148 VD705 1N4148 VD706 1N4148 VD707 1N4148 VD708 1N4148 VD709 1N4148 VD710 1N4148 VD711 1N4148 VD712 1N4148
A5VV
VGND VGND
SPDIF GND
HSYNC# VSYNC#
Y1 Y2 Y3 Y4 Y5 Y6
2 3 4 1 5 6 8 9
10
7
11
XS701 XS11
VGND
SACLK SBCLK SLRCK SDATA0 SDATA1 SDATA2 SCL SDA VDATA3
GND
RESET#
R701 330R
C710 104 R702 91R
SPDIF
AGND
VIDEO_V
L709 FBSMT L708 FBSMT L707 FBSMT
VIDEO_Y1 VIDEO_U
VGND
GREEN BLUE RED
B G R
Y- Pb- Pr-
C714 20pF C715 20pF C716 20pF
1
2
3
JK702 AV2
1
2
3
JK701 AV2
2 1JK711
XS02
L710 FBSMT
VIDEO_COMP
R706 2.2R C721
20pF
VGND
C719 20pF C720
20pF
TC726 47uF/16V
2 3 4 1 5 6 8 7
XS703 CON08
CPU+3.3V GND +3.3V SA+5V GND +9V GND -9V
5 3 1 2 4
JK704 V-OUT2
5 3 1 2 4
JK703 V-OUT2
1 2
3 46
6
5
5
JK706 S-VIDEO
1 2
JK707 CVOUT6
2 3 4 1 5 6 8 9
10
7
11 12 13 14
XS702 XS14P
A(B)OUT
1
A(A)OUT
3
RETURN
5
BLUE I/O
7
RETURN
9
GREEN I/O
11
RETURN
13
RED I/O
15
RETURN
17
V-OUT
19
GND
21
A(B)IN 2
A-COM 4
A(A)IN 6
FUNC SW 8
CONT 10
NC 12
RETURN 14
BLK I/O 16
TRTURN 18
V-IN 20
JK708 VJS3921
R707
A+10V
AGND
AGND
VGND VGND
R+# L+#
CVBS Pr- Y- Pb-
R774 4.7K
Q712 8050
R777 33R
R775 330R
R776 2.2K
+9V A+10V
VGND
VDATA3
Q711 8050
R773 1K
R772 2.2K
HSYNC#
A5VV
VGND
A+10V
R778 75R
Q713 8050
C772 104
VGND
SA+5V
VSYNC#
VDATA3
CVBS
R+# L+#