Roche Diagnostics April 2007
A-50 Service manual · Version 2.0
5 Electronic diagrams 91xx pH/Electrolyte Analyzers
Electronic diagrams
SBC PCB - printer display drivers - 9110, 9120, 9130, 9140
Figure A-15 SBC PCB - printer display drivers - 9110, 9120, 9130, 9140
OPEN2
NOT STUFFED FOR 9110
V+
+5VA
DD[0..7]
DISPBF
BUZZER
Q5
2N3906
SSEN
DD1
+5VA
DD7
BZ1
BUZZER
1
2
R98
10K
1 2
"SS ADJ."
DOT6-
SAMPLELED-
R95
100
12
-8V
ZD5005
F
SCHEMATIC, MAIN BOARD 91XX
99Thursday, June 27, 2002
Tit le
Size Document Number Rev
Date: Sheet
of
DSPDATA
DOT2-
R89
5KPOT
13
2
ADDATA
DOT5-
R91
10K
1 2
DISTR
R102
10K
1 2
ADSEL1
VCC
OPEN3
DD4
DISPR/W-
ADDAT7
VACTRL
ADDAT3
"SS"
ADDAT1
ADLBEN-
R96
1K
12
U30D
1489
13 11
12
OPEN5
ADOSTR
ADDAT[0..7]
DOT7-
DD0
PGND
MISO
SAMPLE
R99
5.1K
12
DOT3-
U35
74HC595
14
11
10
12
13
15
1
2
3
4
5
6
7
9
SER
SRCLK
SRCLR
RCLK
G
QA
QB
QC
QD
QE
QF
QG
QH
QH'
VASTR
DD3
ADHBEN-
Q3
2N3904
ADDAT0
ADDAT6
ADSEL2
Q4
2N3904
ADISTR
MOSI
"CONTRAST"
OPEN4
ADCE-
PGND
U33
LB1256
10
18
17
16
15
14
13
12
11
9
1
2
3
4
5
6
7
8
VCC
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUTM
GND
IN1
IN2
IN3
IN4
IN5
IN6
IN7
INM
U36
74HC594
14
11
10
12
13
15
1
2
3
4
5
6
7
9
SER
SRCLK
SRCLR
RCLK
RCLR
QA
QB
QC
QD
QE
QF
QG
QH
QH'
VCC
R88
4.7K
12
DATA/INST-
MOTOR-
VCC
ADRUN
ADDAT5
VCC
TP15
UT35-017
1
R94
1K
1 2
mb9.sch
SSEN
OPEN1
PRSTR
ADDAT2
VCC
CONTRAST
ADDAT[0..7]
DD2
STUFFED
R87
150
12
SCK
+5VA
+
-
U39A
LF353
3
2
1
84
PRCTRL
ADSEL0
NOT
U34
74HC594
14
11
10
12
13
15
1
2
3
4
5
6
7
9
SER
SRCLK
SRCLR
RCLK
RCLR
QA
QB
QC
QD
QE
QF
QG
QH
QH'
U37
74HC594
14
11
10
12
13
15
1
2
3
4
5
6
7
9
SER
SRCLK
SRCLR
RCLK
RCLR
QA
QB
QC
QD
QE
QF
QG
QH
QH'
DOT1-
ADDAT4
PRINTVCC
+5V
DOT4-
DD6
DD[0..7]
SAMPLE
DISPEN
U38
74HC165
10
11
12
13
14
3
4
5
6
2
15
1
9
7
SER
A
B
C
D
E
F
G
H
CLK
INH
SH/LD
QH
QH
R92
1K
12
RESET-
R97
10K
12
A
ADCTRL
R93
5KPOT
13
2
DD5
R90
1K
12
Q6
2N3904
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