Bkdm-3010 (Cpu-119 Board) - Sony BKDM-3020 Maintenance Manual

IC34
DECG
4
DTOE/WE
4 GRAM
ADDRESS
DEC
A10~18
IC38,44,49
10
9
WR CASV
11
RD ADL
ADD0~8
ADDRESS
MPX
ADH
9
IC48
OE
SHIFT
SE/SC
REGISTER
4
A2~9
IC39,44,49
8
ADD0~8
ADDRESS
MPX
ADL
9
OE
IC32
74HC4040
10 VERTICAL
IC36,44
COUNTER
9
11
ADD0~8
ADDRESS
10
MPX
C0~10 9
OE
IC37,44
10
8
IC35
VCONT
19
ADD0~8
ADDRESS
VERTICAL 16 MPX
CONTROL 17 9
OE
15 18 14
V
VD
HD
IC26
CASC
IC26
RASC
http://getMANUAL.com

BKDM-3010 (CPU-119 board)

Block Diagram
32
DATA BUS AD0~31
24
ADDRESS BUS A0~A23
IC40~43
TC528126 IC53
8
DTOE/WE
9
A0~10 D0~31
GRAPHIC COLOR
RAM PALETTE
8
CN2
G0~7
34 R
R
24 33 G
4 PLT G
B
28 32
SE/SC WR B
41 40 H
X2 H
42 39 V
RESET V
CAS
RAS
HD
VD
IC57
26LS32
CN3
RS422
3 RX-A
16 RX-B RECEIVER
CN3
5 TX-A RS422
18 TX-B DRIVER
FROM IC56
PROCESSOR 26LS30
DSUB
25pin
IC57
26LS32
CN3
REFV
9 VD-A
22 VD-B RECEIVER
5-5
BKDM-3010 (CPU-119 board)
IC64
8
A16~23
13
ALE LOGIC
10
RD
11
WR DEVICE
8
D24~31
2
A2,3
CS1
IC59
WAIT
MB8421
WR
RD
8
D24~31
DUALPORT
1 5
MEMORY
FROM
2 A2~6
MONITOR
3
DSUB
13 15pin
14
IC71
IC55
71BIT
6 10
COUNTER
IC58
HD647180
CNT3K
X5
9.83MHz
13 60
SERIAL
INTERFACE
2 59
8
67 66
D24~31
X3
2
12.2MHz
A2,3
RESET
3
REFV
5-5
Block Diagram
IC68
4
D24~27
4
VB
A2~5
REAL
TIME
17 1 X4
21 2 CLOCK 32.76KHz
RESET
23 8
FLUSH WR
16 10
PLT RD
22
CS0
15
IC77 IC80
CS1
14
CS2
FF NOR
BZ
IC65~67
BZ
CS3~5
UP/DOWN
COUNTER
12
IC70
IC69
56
59
61
2
60
DUALPORT
8
MEMORY
5
8 8
IC74 IC73
74HC540 74HC541
55 49
BUS BUS
RECEIVER DRIVER
OE OE
1 1
IC72 KEY
14
8 8
5
12
KEY 8
TIMING
9 6 IC81
GEN
OR
IC80
13
IC77 NOR RESET SW
BZ 10SEL FF
5
IC76
HD63266F
IC69
FLOPPY
11
DISK
6
CS2
3 CONTROLLER
5
WR
4 212
RD FDD
X6
16MHz
IC63
MAX232C
11 14
13
RS232
2
DRIVER
12
OVERALL BLOCK
BKDM-3010 (CPU-119 board)
CN5
UDA2 1
UDB2 2
UDA3 3
UDB3 4
FROM
UDA4 5 ROTARYENCODER
ELCO
UDB4 6
15pin
UDA5 7
UDB5 8
UDA6 9
UDB6 10
CN4
UDA1 14
UDB1 15
FROM
KEYSCAN
ELCO
15pin
CN4
KD0 8
KD1 7
KD2 6
KD3 5
KD4 4
KD5 3
KD6 2
KD7 1
CN4
KA0 13
KA1 12
KA2 11
KA3 10
KA4 9
CN6
MDDIA 9
INDEX 2
DRIVE SELECT 4
MOTOR ON 10
DIRECTION 12
TO
STEP 14
FDD
WD 16
26pin
WG 18
TRKO0 20
WRITE PROT 22
READ DAT 24
SIDE1 26
CN1
TD 3
FROM
RD 2
SPARE
RST 7 DSUB
9pin
DTR 4