Roche 91 Series - Electronic Diagrams

Roche Diagnostics April 2007
A-40 Service manual · Version 2.0
5 Electronic diagrams 91xx pH/Electrolyte Analyzers
Electronic diagrams
9120, 9130, 9140, 9180 analyzer block diagram
Figure A-5 9120, 9130, 9140, 9180 analyzer block diagram
Preamplifier
Na Amp
K Amp
Cl/Ca/Li Amp
Analog Selector
and
A/D Converter
Power Supply
+22VDC / +10VDC
+5VDC / -5VDC (9180)
+8VDC / -8VDC
+22VDC / +12.5VDC
Interface Driver
RS232
100 - 240 V~
MAIN
50 - 60 Hz
Fluid Pack Detector
Sensor
(9180 only)
Display Driver
Temperature Control
(9140/9180 only)
Printer Driver
Microprocessor
Peristaltic Pump Driver
Solenoid Valve Drivers
Power Receptacle
1.6 AT
1.6 AT
Display Module YES/NO Switches
Temp Sensor
(9140/9180 only)
Sample Sensor
P r in t e r
A sse m bl y
L a m p B o a r d
Power Supply Module
Fuse F1 2.5A/250V +5VDC/+24VDC
+12VDC/-12VDC
Na Electrode
K
Cl
Reference
Electrode
GND
S BC B o a r d
D i s pl ay B o a r d
Sample Sensor/Temp Sensor
P. Pump Motor
JP6
Sample Door
JP7
Valve A JP1
Valve B JP2
Valve C JP3
Valve V JP4
Valve R JP5
JP8
JP5
JP1
JP1
JP4
JP2
JP7
JP3
JP1