Thermo Scientific SAM12, Manual

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Issue: 1.0 Technical Description - Circuitry
Thermo Fisher Scientific SAM12 User Manual 7-3
Provides for two independent power sources with current
limiting for USB peripherals
Not used
SK7 VGA/ CRT display interface
SK1 LCD & Touch Screen display interface compatible with
5663A
Summary of the controller board inputs:
Input Connection Function
IP1 PL24 Door Switch (dirty)
IP2 PL27 Solenoid Status (dirty)
IP3 PL28 Door Switch (clean)
IP4 PL29 Solenoid Status (clean)
IP5 PL20 Start Button
Summary of the controller board outputs:
Output Connection Function
OUT1 PL16 Door Interlock Magnet
(dirty)
OUT2 PL17 Door Interlock Magnet
(clean)
OUT3 PL18 Not Used
OUT4 PL19 Not Used
Battery Controller Board Type 5660A
Battery Controller Board, type 5660A, is shown on assembly
diagram C91799/A. This is an X-channel device which enables
the operating system to monitor the charging process and
remotely shut down the load.
The Battery Controller Board, type 5660A, controls the DC
voltage output of a power converter unit (PL4) between the
range +11.2 V to +15.6 V in order to maintain the integrity of
the +12 V 15 Ah Lead Acid Battery (PL3), over the operating
temperature range (temperature sensor on PL1).
The 5660A has the ability to switch the load (PL6) ON/OFF as
directed by the operator, whilst continuing to charge the
IC2 & IC3 USB power
controllers
IC5 LCD Power and Control
IC4 EEPROM
Display facilities
Inputs
Outputs
Introduction