Roche 91 Series - SBC PCB - Valve Drivers - 9180, 9181

Roche Diagnostics April 2007
A-58 Service manual · Version 2.0
5 Electronic diagrams 91xx pH/Electrolyte Analyzers
Electronic diagrams
SBC PCB - valve drivers - 9180, 9181
Figure A-23 SBC PCB - valve drivers - 9180, 9181
C32 0.1uF
12
VALVEV-
U5 LM317
3 2
1
VIN VOUT
ADJ
D19 1N750
1 2
C31 0.1uF
12
SGND
THER M-
+
C36
2.2uF/50V
12
OVERTEMP-
+
C39
2.2uF/50V
12
R19 1.82K 1%
12
VALVE-
R15 1K
1 2
TP16
1
OPEN2
R18 200 1%
12
OPEN1
R21 4.7K
1 2
OPEN5
Q11 MJE800
R14 1K
1 2
A
VALVEA-
Q12 MJE800
Q8 2N3904
"+22V/12.5V"
OPEN3
Q10 MJE800
+
C40
2.2uF/50V
12
R13 1K
1 2
+24V
+
C38
2.2uF/50V
12
VALVE DRIVERS
SGND
ZHS2 HEATSINK
Q9 MJE800
R16 10K
1 2
VALVEB- VALVEC-
R11 1K
1 2
OPEN4
VALVER-
R12 1K
1 2
VALVE+
R20 1.5K
12
ZD5015 G
SCHEMATIC, MAIN BOARD 9180 / 9181
511Monday, May 03, 1999
Tit le Size Document Number Rev Date: Sheet
of
+
C37
2.2uF/50V
12
Q13 MJE800