Xerox Phaser 8400 Service Manual page 116

8400 8500/8550
37,024.42: 37,027.45:
37,025.43: 37,028.46:
37,026.44: 37,029.47:
Troubleshooting Procedures for Relay Board
Step Questions and Actions
1 1. Run the Drum Heater Relay test.
2. Did the test pass?
2
1. Check the wiring for damage.
8400 8500/8550
37,027.45: 37,030.48:
37,028.46: 37,031.40:
37,029.47: 37,032.41:
37,030.48: 37,033.42:
37,031.40: 37,034.43:
Troubleshooting Procedure for X-axis Motor
Step Questions and Actions
1 1. Run the X-axis Drive test.
2. Did the test pass?
2
1. Check the X- axis motor wiring for damage.
3-50
Drum heater relay board disconnect. Both drum heater
relay coils are not drawing the expected power from the
supply.
Drum heater relay A disconnect. The drum heater A coil is
not drawing the expected power from the supply.
Drum heater relay B disconnect. The drum heater B coil is
not drawing the expected power from the supply.
X-axis motor disconnect. The X-axis motor is not drawing
the expected power from the supply (both phases).
X-axis motor disconnect. The X-axis motor (first phase) is
not drawing the expected power from the supply
X-axis motor short. The X-axis motor is drawing too much
power from the supply (first phase).
X-axis motor disconnect. The X-axis motor (second phase)
is not drawing the expected power from the supply.
X-axis motor short. The X-axis motor is drawing too much
power from the supply (second phase).
Phaser 8400/8500/8550 Color Printer
PEST Description
Yes
Replace the
electronics
module.
Replace the drum heater relay
board.
PEST Description
Yes
Replace the
electronics
module.
Replace the X-axis motor.
No
Go to Step 2.
No
Go to Step 2.