Bd2 (2/2); Bd2 - Sony BKM-21D Maintenance Manual

1
2
PAL-D CLK
PAL-D
IC910
TC74VHC574F(EL)
LATCH
OE
RO9
D0
RO8
D1
RO7
D2
RO6
D3
3
RO5
D4
RO4
D5
RO3
D6
RO2
D7
GND
IC909
TC74VHC574F(EL)
LATCH
OE
D0
D1
D2
D3
RO1
4 D4
RO0
D5
BO9
D6
BO8
D7
RO GND
BO
IC908
TC74VHC574F(EL)
LATCH
OE
BO7
D0
BO6
D1
BO5
D2
BO4
5 D3
BO3
D4
BO2
D5
BO1
D6
BO0
D7
GND
A B
5V
36 35 34 33 32 31 30 29 28 27 26 25
37 NC PSB0 24
38 NC PSB1 23
39 AEN PSB2 22
+5V
40 21
NT/PAL PSW0
41 20
SCLK PSW1
IC904
42 CLK CXK1203AR-T4 VDD 19
PB 1H DELAY
43 VDD PSW2 18
44 OPEN PSW3 17
C936
0.01
45 NC PSW4 16
F:CHIP
46 NC PSW5 15
47 NC PSW6 14
48 13
NC PSW7
1 2 3 4 5 6 7 8 9 10 11 12
5V
C907
0.01
F:CHIP
VCC
PR9 PB19
Q0
PR8
Q1
PR7
Q2
PR6 PB18
Q3
PR5
Q4
PR4
Q5
PR3
Q6
PR2
Q7
CK
PB17
PB16
IC912
5V
TC74AC283F(EL)
4BIT FULL ADDER
C906
0.01
VCC F:CHIP
PB15
Q0
Q1
Q2
PB14
Q3
PR1
Q4
PR0
Q5
Q6
Q7
CK
PB13
PB12
IC913
TC74AC283F(EL)
5V
4BIT FULL ADDER
C905 PB11
0.01
F:CHIP
VCC
Q0
PB10
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CK
C

BD2 (2/2)

BD2 (2/2)

5V 5V
36 35 34 33 32 31 30 29 28 27 26 25
37 NC
38 NC
+5V 39 AEN
+5V
40
NT/PAL
41
SCLK
IC903
42 CLK CXK1203AR-T4
PR 1H DELAY
43 VDD
44 OPEN
C935 C916
0.01 0.01
45 NC
F:CHIP F:CHIP
46 NC
47 NC
48
NC
1 2 3 4 5 6 7 8 9 10 11
IC911
TC74AC283F(EL)
5V
4BIT FULL ADDER
S2 VCC
C908 PR9
B2 B3
0.01
F:CHIP PR19
A2 A3
ADDB9
S1 S3
PR8
A1 A4
PR18
B1 B4
C0 S4
GND C4
ADDB8
ADDB7
PR17
PR7
PR16
PR6
IC915
5V
TC74AC283F(EL)
C909
4BIT FULL ADDER
0.01
S2 VCC
F:CHIP
PR5
B2 B3
ADDB6 PR15
A2 A3
ADDB5
S1 S3
PR4
A1 A4
PR14
B1 B4
C0 S4
GND C4
ADDB4
ADDB3
PR13
PR3
PR12
PR2
5V
IC916
TC74AC283F(EL)
C910
0.01 4BIT FULL ADDER
F:CHIP
S2 VCC
PR1
B2 B3
ADDB2 PR11
A2 A3
ADDB1
S1 S3
PR0
A1 A4
PR10
B1 B4
C0 S4
GND C4
ADDB0
8-20 8-20
D E
5V
PSB0 24
PSB1 23
PSB2 22 +5V
21
PSW0
20
PSW1
VDD 19
C917
PSW2 18 0.01
F:CHIP
PSW3 17
PSW4 16
PSW5 15
PSW6 14
13
PSW7
12
PAL-D CLK
PAL-D
IC914
TC74AC283F(EL)
4BIT FULL ADDER
ADDB0
5V
ADDB1
S2 VCC
ADDB2
C911
B2 B3
0.01 ADDB3
F:CHIP
A2 A3 ADDB4
S1 S3 ADDR9
ADDB5
A1 A4
ADDB6
B1 B4
ADDB7
C0 S4
GND C4
ADDR8
ADDR7
5V
C912
0.01
S2 VCC
F:CHIP
B2 B3
A2 A3
S1 S3 ADDR5
ADDB8
A1 A4
ADDB9
B1 B4
C0 S4 ADDR6
GND C4
ADDR4
ADDR3
5V
C913
0.01
S2 VCC
F:CHIP
B2 B3
A2 A3
S1 S3 ADDR1
A1 A4
B1 B4
C0 S4 ADDR2
GND C4
ADDR0
F
5V
IC917 C915
TC74VHC574F(EL) 0.01
F:CHIP
LATCH & OE
OE VCC
BDO0
D0 Q0
BDO1
D1 Q1
BDO2
D2 Q2
BDO3
D3 Q3
BDO4
D4 Q4
BDO5
D5 Q5
BDO6
D6 Q6
BDO7
D7 Q7
GND CK
C918
5V
0.01
F:CHIP
IC918
TC74VHC574F(EL)
LATCH & OE
OE VCC
RDO4
D0 Q0
RDO3
D1 Q1
RDO2
D2 Q2
RDO1
D3 Q3
RDO0
D4 Q4
D5 Q5
BDO8
D6 Q6
BDO9
D7 Q7
GND CK
BDO
C919
5V
0.01
F:CHIP
IC919
TC74VHC574F(EL)
LATCH & OE
OE VCC
RDO8
D0 Q0
RDO7
D1 Q1
RDO6
D2 Q2
RDO5
D3 Q3
RDO9
D4 Q4
D5 Q5
D6 Q6
RDO
D7 Q7
GND CK
BD2
(2/2)
(PB/PR 1H DELAY)
B-SS9520-WORLD-BD2-P2
BKM-21D
G H