AVL 9180 Service Manual

80
Date: April 10, 1996Sheet 5 of 9 Size Document Number REV
B INPUT AMPLIFIERS D
Title
SCHEMATIC, MAIN BOARD ISE/PH
(404)587-4040 30077 Roswell, Georgia 33 Mansell Court AVL Scientific Corp.
"Na/pH"
C49 NOT STUFFED FOR 9110
OFFSET = -1100 mv pH OFFSET = -2200mV Na
1 2
C49 0.22uF
1
TP9 UT35-017
1 2
R63 1K
Na/pHOUT
ARE DIFFERENT FOR ISE AND pH NOTE VALUES OF R44 AND R47
*
**
ISE
PH
1 2
C48 0.22uF
2 3
1
1 1 4
U12A TLC279CN
1 2
R47 165K 1% ISE 102K 1% pH
1 2
R44
59K 1% ISE 18.2K 1% pH
123
JP202 HEADER 3
1 2
R113 1K
+8V -8V
NOTE: NO SOLDER MASK IN PROBE AREA
3 8 2
7
6
4
U13 OPA103AM
1 2
R41 1K 1%
+8V -8V
NOTE: PROBE THRU IN+ SHIELDED
INPUT AMPLIFIERS
NOTE: GUARD RING AND PROBE AREAS SHOULD BE CLEAR OF SOLDER MASK.
Na/pH
P2 PROBE
1 2
R34 100K
ZPROBE2 R4WW
NOTE: PROBE THRU IN+ SHIELDED
K
P3 PROBE
1 2
R35 100K
ZPROBE4 R4WW ZPROBE3 R4WW
3 8 2
7
6
4
U14 OPA103AM
1 2
R40 1K 1%
+8V +8V -8V
ISE 1-2 pH 2-3
1 2
C50 0.22uF
1 2
R46 68.1K 1%
1 2
R48 604K 1%
1 2
R114 1K
OFFSET = 0
"K"
C50 NOT STUFFED FOR 9110
NOT STUFFED
OFFSET = -700mV
1
TP10 UT35-017
1
TP11 UT35-017
1 2
R45 43.2K 1%
1 2
R64 1K
6 5
7
U12B
TLC279CN
1 2
R111 100K
KOUT
NOT STUFFED
1 2
C52 0.1uF
1 2
R65 1K
1 2
C51 0.1uF
1 2
R112 100K
-8V +8V
"Cl/Ca"
Cl/CaOUT
9 10
8
U12C
TLC279CN
1 2
R115 1K
3 8 2
7
6
4
U15 OPA103AM
1 2
R39 1K 1%
1 2
C300 0.22uF
1 2
R301 1K 1%
1 2
R302 18.2K 1%
3 8 2
7
6
4
U300
OPA103AM
+8V -8V -8V
NOTE: PROBE THRU IN+ SHIELDED
Ref
Cl or Li
NOT STUFFED FOR 9110
P4 PROBE
1 2
R36 100K
P5 PROBE
ZPROBE5 R4CR
1 2
R300 100K
NOTE: 300 SERIES COMPONENTS
B
R303-1 WAS TO SSEN
CUT AND JUMPER REV G BOARDS
1 2
R303 10K
Q300 2N3904
7
1
53
K300
SIP RELAY SPST
2 1
D300 1N4148
GPO
VCC
-6.2V
OFFSET GENERATOR
FOR 9110 ONLY
OPEN pH CLOSED ISE
1 2
R42 2.2K
1 2
D15 1N827
1 2
JP201 HEADER 2
-8V
13 12
14
U12D TLC279CN
mb5.sch
SBC PCB - INPUT AMPLIFIERS - 9120, 30, 40

AVL 9180 Specifications

General

Brand	AVL
Model	9180
Category	Measuring Instruments
Language	English