Roche 91 Series - SBC PCB - Input Amplifier - 9180, 9181

Roche Diagnostics April 2007
A-60 Service manual · Version 2.0
5 Electronic diagrams 91xx pH/Electrolyte Analyzers
Electronic diagrams
SBC PCB - input amplifier - 9180, 9181
Figure A-25 SBC PCB - input amplifier - 9180, 9181
+5VA
ZPROBE2 R4WW
-
U12D TLC279CN
13 12
14
+5VA
Na
C50 3.3uF/50V
P3 PROBE
A
ZFST-P2P5-1 FASTENER3
NOTE: PROBE THRU IN+ SHIELDED
"Na"
R45 43.2K 1%
1 2
Cl,Li,or Ca
KOUT
R115 1K
12
R48 243K 1%
1 2
ZPROBE3 R4WW
"Cl/Ca/Li"
+5VA
C51 0.1uF
1 2
R41 1K 1%
1 2
TP11
1
Cl/Ca/LiOUT
P2 PROBE
"K"
V-
C49 3.3uF/50V
-
U12B
TLC279CN
6 5
7
R47 66.5K 1%
1 2
OFFSET = 0
-
U12A TLC279CN
2 3
1
11 4
U42 LM385BXZ-2.5
1 2
3
C52 0.1uF
12
TP9
1
OFFSET = 700mV
NOTE:
R35 100K
1 2
U13D LMC6064
13 12
14
ZD5015
G
SCHEMATIC, MAIN BOARD 9180 / 9181
711Monday, May 03, 1999
Tit le Size Document Number Rev Date: Sheet
of
-5VA
NOTE: PROBE THRU IN+ SHIELDED
SHOULD BE CLEAR OF SOLDER MASK
NOTE: NO SOLDER MASK IN PROBE AREA
R64 1K
1 2
R114 1K
12
GUARD RING AND PROBE AREAS
R44
59K 1%
1 2
ZPROBE5 R4CR
OFFSET GENERATOR
R40 1K 1%
1 2
R65 1K
1 2
-5VA
P4 PROBE
OFFSET = 2200mV
NOTE: PROBE THRU IN+ SHIELDED
R63 1K
1 2
R36 100K
1 2
R113 1K
12
R34 100K
1 2
ZPROBE4 R4WW
K
NaOUT
R46
68.1K 1%
1 2
C48
3.3uF/50V
Ref
R42 82K
12
ZSPHLDR1 PROBEHOLDER
P5 PROBE
TP10
1
U13C LMC6064
9
10
8
-2.5V
-5VA
R39 1K 1%
1 2
INPUT AMPLIFIERS
ZFST-P2P5-2 FASTENER3
-
U12C
TLC279CN
9
10
8
U13B LMC6064
6 5
7
U13A LMC6064
2 3
1
11 4