Xerox Paser 7400 Service Manual page 153

Troubleshooting Procedure Table (Continued)
Step Actions and Questions
4
Check for +24 V at OPTRY24.
1. Close the Interlock Switches.
2. Disconnect OPTRY24.
Is there +24 V at OPTRY24-1 and -2 <=>
ground?
5 Check all pins on the OPTRY24 Harness
for continuity.
Disconnect the OPTRY24 Harness.
Is the OPTRY24 Harness conductive?
6 Check for +24 V from the LVPS.
Disconnect POW24.
Is there +24 V at POW24-1 <=> ground?
7 Check the LVPS +24 V output.
1. Close the Interlock Switches.
2. Disconnect CN2.
Is there +24 V at CN2-1 and <=> ground?
General Troubleshooting
Yes
Replace the
affected Option
Control Board.
Go to Step 6.
Replace the Motor
Driver Board (see
Book 1)
Replace the Engine
Control Board (see
Book 1)
No
Go to Step 5.
Replace the
OPTRY24
Harness.
Go to Step 7.
Replace the LVPS
(see Book 1).
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