Bha (2/2) Block Diagram - Sony BKM-48X Installation And Maintenance Manual

8-2. BHA (2/2) BLOCK DIAGRAM

1
2
RESET
SCLK
3
MOSI
CH-SLOT
4
+ 15V
+ 15V
– 15V
– 15V
+ 6V
+ 6V
5 – 6V
– 6V
A B
IC2
EEP ROM
1
CS
5
SI
2 54
SO SI1
6
CLK
Q1
20
B26 SWITCH RST
IC4(4/4)
9 8 1
SCLK2
B28
10
IC4(2/4)
2 3 3
A28 SI2
1
IC4(1/4)
5 6 15
P60/INTO
A31
4
IC10
A5 +12V
12V REG
IC20
B5
–12V REG –12V
A4
IC30
B4
5V REG +5V
A7
IC40
B7
–5V
A6 –5V REG
B6
C
BHA (2/2) BHA (2/2)
IC1
BOARD CPU
51
EE CS
52
SCLK1
53
S01
4
P50/CS16
23
X0
X1
8MHz
24
X1
10
P56/CS22
27
P26/CS14
29
P24/CS12
32
P21/CS09
39
P12
43
P06
44
P05
45
P04
46
P03
47
P02
48
P01
49
P00
58
P36
IC4(3/4)
2 12 11
13
64
8-2 8-2
D E
IC3
D/A CONVERTER
19
A02 PB LEVEL 1/2
17
D1
2
1/2
A03 PC LEVEL
3
1/2
A04 PY LEVEL
7
1/2
A08 V LEVEL
8
A09 1/2
16 APT LEVEL
CLK
12
A011 Y LEVEL 1/2
13
A012 PR LEVEL 1/2
15
LD
1/2
33K
1/2
OE
1/2
GBR
1/2
INT-V
1/2
V-A
1/2
COMP A
1/2
COMP B
1/2
V-F
1/2
V-E
1/2
V-D
1/2
V-C
1/2
V-B
1/2
INT-YC
B27 MISO
F G
BOARD CPU
D/A CONVERTER
BHA BLOCK (2/2)
H