Roche 91 Series - SBC PCB - Input Amplifiers - 9110, 9120, 9130, 9140

Roche Diagnostics April 2007
A-46 Service manual · Version 2.0
5 Electronic diagrams 91xx pH/Electrolyte Analyzers
Electronic diagrams
SBC PCB - input amplifiers - 9110, 9120, 9130, 9140
Figure A-11 SBC PCB - input amplifiers - 9110, 9120, 9130, 9140
"Na/pH"
A
+8V
JP202 HEADER 3
1
2
3
R47 165K 1% ISE 102K 1% pH
1 2
Cl/Ca/LiOUT
R65 1K
1 2
NOT STUFFED
+5V
+ -
U12A
TLC279CN
3 2
1
114
ISE
CLOSED ISE
+8V
C51 0.1uF
1 2
NOT STUFFED
ZPROBE5 R4CR
OPEN pH
Na/pH
-8V
C300 0.22uF
12
pH 2-3
-8V
-8V
D15 1N827
12
R300 100K
1 2
mb5.sch
- +
U13 LMC6061
3 8 2
7
6
4
NOTE: PROBE THRU IN+ SHIELDED
Li
ISE 1-2
"Cl/Ca/Li"
ZPROBE4 R4WW
FOR 9110
R46 68.1K 1%
1 2
or
ZPROBE3 R4WW
OFFSET = -700mV
+ -
U12D TLC279CN
12 13
14
"K"
Na/pHOUT
C49 NOT STUFFED FOR 9110
R64 1K
1 2
C48 0.22uF
1 2
K
P5 PROBE
+5V
Q300 2N3904
R40 1K 1%
1 2
M
ASK.
R301 1K 1%
1 2
- +
U300
LMC6061
3 8 2
7
6
4
C50 NOT STUFFED
P3 PROBE P4 PROBE
R39 1K 1%
1 2
+5V
Cl
-8V
R42 2.2K
12
R302 18.2K 1%
12
+ -
U12C TLC279CN
10
9
8
R63 1K
1 2
SHOULD BE CLEAR OF SOLDER
OFFSET = -2200mV Na
R35 100K
1 2
D300 1N4148
21
TP9 UT35-017
1
Ref
NOTE: PROBE THRU IN+ SHIELDED
GUARD RING AND PROBE AREAS
OFFSET = -1100 mv pH
TP10 UT35-017
1
FOR 9110 ONLY
+ -
U12B TLC279CN
5 6
7
ZPROBE2 R4WW
-6.2V
R36 100K
1 2
JP201 HEADER 2 1 2
-8V
- +
U14 LMC6061
3 8 2
7
6
4
NOTE:
NOT STUFFED FOR 9110
GPO
R41 1K 1%
1 2
R111 100K
12
R114 1K
12
NOTE: NO SOLDER MASK IN PROBE AREA
*
- +
U15 LMC6061
3 8 2
7
6
4
INPUT AMPLIFIERS NOTE: 300 SERIES COMPONENTS
+5V
OFFSET GENERATOR
*
R48 604K 1%
1 2
VCC
C50 0.22uF
1 2
P2 PROBE
NOTE: PROBE THRU IN+ SHIELDED
KOUT
R112 100K
12
*
C49 0.22uF
1 2
-8V
R113 1K
12
-8V
K300
SIP RELAY SPST
7
1
5
3
ZD5005
F
SCHEMATIC, MAIN BOARD 91XX
59
Thursday, June 27, 2002
Tit le Size Document Number Rev Date: Sheet
of
R45 43.2K 1%
1 2
NOTE VALUES OF R44 AND R47
R34 100K
1 2
OFFSET = 0
R115 1K
12
TP11 UT35-017
1
C52 0.1uF
12
ARE DIFFERENT FOR ISE AND pH
R44
59K 1% ISE 18.2K 1% pH
1 2
R303 10K
1 2
PH