BBK AV212T, Service Manual, Page: 18 / 26

1 2 3 4 5 6 7 8
A
B
C
D
8 7 6 5 4 3 2 1
D
C
B
A
Title
Number Revision Size
A2
Date: 30-Aug-2003 Sheet of
File: E:\BBKAV2~1\212TIN.SCH Drawn By:
OUT3
2
OUT2
3
OUT1
4
AVDD
5
SWIN
6
GNDS
7
SRIN
8
SLIN
9
OUT4
1
GNDC
10
CIN
11
GNDR
12
RIN
13
GNDL
14
LIN
15
BYPASSR
16
BYPASSL
17
LTRE
18
LBASS3
19
LBASS2
20
LBASS1
21
RBASS1
22
RBASS2
23
RBASS3
24
RTRE
25
CR2
26
CR1
27
CL2
28
CL1
29
AVSS
30
LOUT
31
ROUT
32
SLOUT
34
SROUT
35
SW OUT
36
AGND
37
DGND
38
LATCH
39
DATA
40
CLK
41
COUT
33
DVDD
42
U7
M62446FP
C28
10u/50
C12
10u/50
C13
10u/50
C14
10u/50
C19
103 CBB
C20
15N CBB
C22
334 CBB
GND
GND
+7V
GND
C23
104
GND
62446_CS
62446_DATA
62446_CLK
+5D
SW_1
SR_1
SL_1
C_1
R52
47K
R49
47K
R50
47K
R51
47K
C26
15N CBB
C27
334 CBB
C25
103 CBB
GND
C65
10u/50
C64
10u/50
-7V
C21
C2Z
SW_6
SR_6
SL_6
C_6
R_6
L_6
SW_7
SR_7
SL_7
C_7
L_7
R_7
GND
C67
100P
C66
100P
GND
EA/VP
31
X1
19
X2
18
RESET
9
RD
17
WR
16
INT0
12
INT1
13
T0
14
T1
15
P10
1
P11
2
P12
3
P13
4
P14
5
P15
6
P16
7
P17
8
P00
39
P01
38
P02
37
P03
36
P04
35
P05
34
P06
33
P07
32
P20
21
P21
22
P22
23
P23
24
P24
25
P25
26
P26
27
P27
28
PSEN
29
ALE/P
30
TXD
11
RXD
10
VCC
40
GND
20
IC13
89C51
D OUT
D IN
6311 CLK
6311 STB
IR SENSOR
BM1A(MVOL)
BM1B(MVOL)
BM2B(MENU)
BM2A(MENU)
RESET
+5V
+5V
SIGNAL DETECT
LEVEL COMPARE
X0
12
X1
13
Y0
2
Y1
1
Z0
5
Z1
3
INH
6
A
11
B
10
C
9
X
14
Y
15
Z
4
VDD
16
VSS
8
VEE
7
U1 4053
AC3SR
AC3SL
AC3C
PRS
PRS
PRC
-5V
+5V
X0
13
X1
14
X2
15
X3
12
X4
1
X5
5
X6
2
X7
4
INH
6
A
11
B
10
C
9
X
3
VDD
16
VSS
8
VEE
7
IC1
4051
X0
13
X1
14
X2
15
X3
12
X4
1
X5
5
X6
2
X7
4
INH
6
A
11
B
10
C
9
X
3
IC7 4051
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
R1
470
R2
470
R3
470
R4
470
R5
470
R6
470
R7
470
R8 470
R9
470
R10
470
R11 470
R12 470
R13
470
R14
470
R15 47K
R16 47K
R17 47K
R18 47K
R19 47K
R20 47K
R21 47K
R22 47K
R23 47K
R24 47K
R25 47K
R26 47K
R27
47K
R28 47K
1
2
3
4
J1
VCD RIN
AUX RIN
CD RIN
DVD RIN
AC-3 RIN
AC-3 LIN
DVD LIN
CD LIN
AUX LIN
VCD LIN
AC-3 SL
AC-3 SR
AC-3 C
AC-3 SW
SW_1
SR_1
SL_1
C_1
RI
LI
4051 C
4051 B
4051 A
4051 A
4051 B
4051 C
4053ABC
4051 A
4051 B
4051 C
4053ABC
+12V
OKDETECT
DELAY1
DELAY2
OK4052B
OK4052A
2313DATA
2313CLK
62446_CLK
62446_CS
62446_DATA
A0
1
A1
2
A2
3
GND
4
SDA
5
SCK
6
WP
7
VCC
8
1C9
24C02
SIG4051B
SIG4051A
24C02SDA
24C02SCK
24C02SCK
24C02SDA
TUNE R
TUNE L
GND
8
4
3
2
1
HA17358
9013
DGND
+5V
SIGNAL DETECT
LEVEL COMPARE
SIG4051B
SIG4051A
TUNER DO
TUNER CL
TUNER DI
TUNER CE
TUNER MODE
TUNER IN
1
2
3
4
5
J1
TUNER DO
TUNER CL
TUNER DI
TUNER CE
TUNER MODE
GND
1
2
3
J2
+12V
3
2
1
+
-
IC4A
JRC4558D
5
6
7
+
-
IC4B
JRC4558D
3
2
1
+
-
IC5A
JRC084
5
6
7
+
-
IC5B
JRC084
10
9
8
+
-
IC5C
JRC084
12
13
14
+
-
IC5D
JRC084
3
2
1
+
-
IC6A
JRC4558D
5
6
7
+
- IC6B
JRC4558D
C29
10U/50V
C30
10U/50V
C31
10U/50V
C32
10U/50V
C33
10U/50V
C34
10U/50V
C39
10U/50V
C40
10U/50V
C58
10U/50V
C59
10U/50V
C60
10U/50V
C61
10U/50V
R55
47K
R54
47K
R73 47K
R78
47K
R76
470
C35 101P
C67
101P
R72
47K
R75
47K
R94 47K
R53
47K
R77
470
C36
101P
C67
101P
R82
47K
R88
1K
R87 5K6
R114
47K
R115
470
C44
101P
R89
47K
R81
1K
R80 5K6
R90
47K
R112 470
C41
101P
R86
47K
R85
1K
R84 5K6
R91
47K
R79
470
C42
101P
R92
47K
R93
1K
R111 5K6
R83
47K
R107
22K
C43
101P
R108 47K
R98
56K
R97
56K
R99
47K
R100 470 C56 223M
C55
103
C57
10U/50V
C45 R108
3
2
1
+
- IC3A
JRC084
5
6
7
+
-
IC3B
JRC084
10
9
8
+
-
IC3C
JRC084
12
13
14
+
-
IC3D
JRC084
R30
100K
R31
100K R32
100K
R33
100K
R34 22K
R35 22K
R36 22K
R37 10K
R38 22K
R39
10K
R41
22K
R42
10K
R43
47K
R44
47K
R40
22K
C1
10U/50V
C2
10U/50V
C6
10U/50V
C7
10U/50V
C10
10U/50V
C15
10U/50V
C4
101P
C5
101P
C8
101P
C9 101P
LI
RI
PRC
PRS
R
10K
R 10K
LOUT
COUT
SLOUT
SROUT
SWOUT
SW_6
SR_6
SL_6
C_6
R_6
L_6
OKIN
1
2
3
4
CN3A
4PIN
1
2
3
4
CN13B
5PIN
1
2
3
4
5
6
7
CN10A1
7PIN
R109
100k
R113
100K
R110 100K
R101 100K
R102
22K
R103
22K
R104 22K
R105 22K
R106 22K
3
2
1
+
-
IC10A
HA17324
5
6
7
+
-
IC10B
HA17324
10
9
8
+
-
IC10C
HA17324
12
13
14
+
-
IC10D
HA17324
R60 100K
R61 100K
R62 100K
R63 100K
R59 100K
R56 100K
R64 100K
R67 100K
R58 10K
R57 10K
R65 10K
R66 10K
D6
IN4148
D7
IN4148
D8
IN4148
D9
IN4148
C46
1U
C47
4.7U
C48
1U
C49
4.7U
X0
13
X1
14
X2
15
X3
12
X4
1
X5
5
X6
2
X7
4
INH
6
A
11
B
10
C
9
X
3
VDD
16
VSS
8
VEE
7
IC11
4051
L_7
R_7
C50
104
R69
10K
R68 10K
R45
47
R47 2K2
Q1
S9014
ZD1
7V5
C16
10U/50V
C17
47U/16
C18
104
R48
47
R46 2K2
Q4
S9015
ZD2
7V5 C11
10U/50V
C37
47U/16
C24
104
+12V +7V
-12V -7V
-5V
+5V
+5VD
+5VD
R70
10K
R71
10K
D10
IN4148
C53
104
C54
10U/16
Q2
9015
+5VD
S LEVEL
R LEVEL
L LEVEL
C LEVEL
S LEVEL
R LEVEL
L LEVEL
C LEVEL
4051 A
4051 B
4051 C
4053ABC
R116
47K
R96
47K
R95
47K
R74
47K
1
2
3
4
5
6
7
8
CN7
8PIN
1
2
3
4
5
6
7
8
CN12B
8PIN
1
2
3
4
5
CN9A
5PIN
D OUT
D IN
6311 CLK
6311 STB
BM1A(MVOL)
BM1B(MVOL)
BM2B(MENU)
BM2A(MENU)
OKDETECT
DELAY1
DELAY2
OK4052B
OK4052A
2313DATA
2313CLK
DGND
IR SENSOR
GND
+5V
-30V
+12V
-12V
+5V
OKIN
GND
GND
COUT
SROUT
SLOUT
+12V T
+12V
-12V
+5V
GND
LOUT
ROUT
1
2
3
CN5A
3PIN
-30V
+5V
GND
1
2
CN7B
TUNED MODE
TO TUNED BOARD
FROM AMP BOARD
TO DSP BOARD
TO VFD BOARD
TO VFD BOARD
TO DSP BOARD
TO AMP BOARD
TO AMP BOARD
SW LEV
R LEV
L LEV
C LEV
SL LEV
SR LEV
SW LEV
R LEV
L LEV
C LEV
SL LEV
SR LEV
R LEV
L LEV
C LEV
SL LEV
SR LEV
R LEV
L LEV
C LEV
SL LEV
SR LEV
SW LEV
R OUT
SINGAL
SINGAL
1 2
CN10B1
CON2