Start
Check all cables for proper
seating and connection
Turn on unit
Look for signs that it is getting AC power
B
1. Install current firmware
Is the most
current firmware
installed?
NO
YES
Is Bulk Supply
fan running?
1. Check line switch
2. Check cables from the Bulk Supply and the AC Plug
3. Check power from the Bulk Supply
4. Replace Bulk Supply
NO
YES
Is display on?
1. Check ribbon cable between Front Panel Assembly and PPMC Assembly
2. Replace Front Panel Assembly
3. Go to Bias Assembly troubleshooting
4. Check display cabling
5. Replace inverter
6. Replace display
NO
YES
Does a single
output fail?
1. Exchange Output Module
2. Go to Bias Assembly troubleshooting
3. Go to Backplane Assembly troubleshooting
NO
YES
1. Make sure the unit has the most current firmware
2. Check the PPMC assembly
NO
Does
communication
work (USB, LAN,
GPIB)?
YES
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