T150/150G/T400/400G Course Computers
26 Type 150/150G/400/400G Course Computers Service Manual 83156-1
Type 150/400 Course Computers
Chapter 5: Functional Circuit Description
5.1. Test points on PCB
There are seven test points available on the Course Computer PCB. These are:
• VPWR
Incoming Supply Voltage (12V or 24V)
• V12
12V Systems – Incoming Supply
24V Systems - Regulated to 12V DC
• 3V
3.3V DC Rail Voltage (Used by Microprocessor)
• 5V
5V DC Rail Voltage
• VIN+12V
Approx 12V above VPWR (for high-side FET drives)
• VADC
Regulated 6.9V DC (for ADC conversion in fluxgate circuit)
• 0V
Ground
D6081-1
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