7-1
UP-D2550S (UC,CE)
IC
IC
Page
Semiconductors of which functions are equivalent are described
here. For parts replacement, refer to the section of Spare Parts in
this manual. The circuit diagram of each IC is obtained from the
IC data book published by the manufacturer.
SECTION 7
SEMICONDUCTOR PIN ASSIGNMENTS
BH9595FP-Y-E2 ................................. 7-1
MB86604L ........................................... 7-2
INDEX, IC
IC
1
2
3
4
5
6
7
8
9
10
11
12
13
NC
GND
GND
V
DD1
TSD
VM
SCSI LINE 14
SCSI LINE 13
SCSI LINE 12
SCSI LINE 11
SCSI LINE10
SCSI LINE 9
SCSI LINE 8
SCSI LINE 7
SCSI LINE 6
GND
V
DD1
EN
SCSI LINE 15
SCSI LINE 16
SCSI LINE 17
SCSI LINE 18
SCSI LINE 1
SCSI LINE 2
SCSI LINE 3
SCSI LINE 4
SCSI LINE 5
25
24
23
22
21
20
19
18
17
16
15
14
EN (PIN 2)
MODE
SCSI Line are High Impedance.
SCSI Line are connected with
2.85V through resistors.
0
1
0
1
: LOW LEVEL
: HIGH LEVEL
SCSI ACTIVE TERMINATOR
—TOP VIEW—
SCSI LINE10
SCSI LINE 9
SCSI LINE 8
SCSI LINE 7
SCSI LINE 6
SCSI LINE 14
SCSI LINE 13
SCSI LINE 12
SCSI LINE 11
SCSI LINE 15
SCSI LINE 16
SCSI LINE 17
SCSI LINE 18
SCSI LINE 1
SCSI LINE 2
SCSI LINE 3
SCSI LINE 4
SCSI LINE 5
EN
V
DD 1
3
4
5
6
8
9
10
11
12
POW
POW
POW
POW
(PUSH - PULL)
POW
POW
POW
POW
POW
(PUSH - PULL)
POW
POW
POW
POW
(PUSH - PULL)
POW
POW
POW
POW
POW
(PUSH - PULL)
2
13
V
DD 1
VM
TSD
19
18
17
16
15
23
22
21
20
14
24
25
to SW
TSD
MODE
CONTROL
2.85V
SUPPLY
2.85V
GENERATOR
POW
BH9595FP-Y-E2 (ROHM)
Summary of Contents for UP-D2550S
Page 1: ...DIGITAL COLOR PRINTER UP D2550S SERVICE MANUAL 1st Edition ...
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Page 72: ...10 6 10 6 UP D2550S UC CE IF 762 IF 762 IF 762 A SIDE SUFFIX 11 ...
Page 73: ...10 7 10 7 UP D2550S UC CE IF 762 B SIDE SUFFIX 11 IF 762 IF 762 ...
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