Block Diagram - Centronics Section - Sony DPP-MS300E Service Manual

5-3. BLOCK DIAGRAM – CENTRONICS Section –
D0 – D7
H
(Page 5-4)
RD
E
(Page 5-3)
5
4
SWITCHING
6
IC705 (1/4)
XCS1 49
STB 60
XSTB 68
C-BUSY 144
SYSTEM CONTROLLER
IC503 (2/4)
BUSY 137
SELECT IN
SEL IN 72
FAULT
FALT 114
AUTO FD
AT-FD 69
SELECT
SELECT 115
PERROR
PERR 116
ACK
XACK 58
XINIT 98
NIBCOM
K
(Page 5-9)
05
BUFFER
IC702
D1 – D8
OC CK
1 11
IC704 (2/5) IC704 (3/5)
5 6 2 1
6 3
LATCH
IC703 (1/2)
1
11 9
LATCH
IC703 (2/2)
13
12
13 2
SWITCHING
11 SWITCHING
IC705 (2/4)
3
IC705 (3/4)
8
10
SWITCHING
9 8 9
IC705 (4/4)
IC704 (5/5)
5-5
J1651
PARALLEL PORT
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
D8
1
7 13 STB
BUFFER
IC701
11
1
17 3 BUSY
36
SELECT IN
9 11 SELECT IN
32
FAULT
8 12 FAULT
14
AUTO FD
14 6 AUTO FD
SELECT 13
15 5 SELECT
12
PERROR
4 16 PERROR
10
ACK
2 18 ACK
31
10 SCHMITT TRIGGER 13
INIT
IC704 (4/5)
DPP-MS300E
5-6