Roche Diagnostics April 2007
Service manual · Version 2.0 A-47
91xx pH/Electrolyte Analyzers 5 Electronic diagrams
Electronic diagrams
SBC PCB - temperature circuit - 9110, 9120, 9130, 9140
Figure A-12 SBC PCB - temperature circuit - 9110, 9120, 9130, 9140
ADDAT4
R69
1K
1 2
ADHBEN-
ADDAT[0..7]
ADDAT[0..7]
X1
3.58MHz
1 2
ADSEL1
+5V
ADSEL0
ADDAT2
R72
1K 1%
1 2
VCC
R68
1K
1 2
A
Cl/Ca/LiOUT
ADDAT3
R71
200K 1%
12
VCC
ADSEL2
ADDAT6
ADCE-
Na/pHOUT
8 TO 1 MULTIPLEXER
ADDAT4
U19
4051
13
14
15
12
1
5
2
4
6
11
10
9
3
X0
X1
X2
X3
X4
X5
X6
X7
INH
A
B
C
X
ZD5005
F
SCHEMATIC, MAIN BOARD 91XX
7
9Thursday, June 27, 2002
Tit le
Size Document Number Rev
Date: Sheet
of
mb7.sch
ADDAT5
ADDAT0
R66
1K
12
ADDAT3
TP14
UT35-017
1
1 LSB APPROXIMATELY 1mV
ADSTATUS
KOUT
ADDAT2
NOTE:
R60
100
12
C56
150nF
12
2.05V
ADRUN
ADDAT1
U21
MC1403
1
3
2
VIN
GND
VOUT
C57
1uF
12
C55
330nF
12
ADDAT1
R70
1K
12
"2.500V"
ADLBEN-
+2.500V
-8V
C54
1nF
1 2
R61
100K
1 2
TEMPOUT
+5V
ADDAT7
U20
ICL7109
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
35
34
33
36
39
37
38
29
30
31
32
17
21
18
19
20
26
27
24
25
22
23 28
1
40
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
OR
POL
STATUS
INHI
INLO
COMMON
REFIN+
REFIN-
REFCAP+
REFCAP-
REFOUT
BUFFER
AZ
INT
TEST
MOD E
LBEN
HBEN
CE/LOAD
RUN/HOLD
SEND
OSCSEL
BUFFOSCOUT
OSCIN
OSCOUT V-
GND
V+
ADDAT0
ADDAT5
A/D CONVERTER
R73
4.53K 1%
12
-8V
R67
1K
1 2
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