Xerox Phaser 8400 Service Manual page 95

Error Code Definition Table (Continued)
Error code
13,519.4x -
TH_DEV_FAULT_YELLOW_TH
ERMISTOR_BAD
13,520.4x -
TH_DEV_FAULT_BLACK_TOO
_HOT
13,522.4x -
TH_DEV_FAULT_BLACK_TOO
_SLOW
13,579.4x -
TH_DEV_FAULT_BLACK_THE
RMISTOR_OPEN
13,581.4x -
TH_DEV_FAULT_MAGENTA_T
HERMISTOR_SHORTED
13,583.4x -
TH_DEV_FAULT_BLACK_THE
RMISTOR_BAD
3-28
Definition
The yellow ink load thermistor is bad
1. Run the Ink Melt 1 temperature sensor test.
2. Inspect the ink loader wiring.
3. Replace the ink loader and/or wiring.
The black ink load heater became too hot.
1. Verify the ambient temperature of the room is not too
high.
2. If the temperature of the environment is too hot,
advise the customer of the environmental
specifications and cool the room.
3. Run the temperature test if the room temperature is
within the correct operating range.
4. If the test fails, replace the ink loader.
The black ink load heater took too long to reach its
setpoint.
1. Verify the ambient temperature of the room is not too
low.
2. If the temperature of the environment is too cold,
advise the customer of the environmental
specifications and heat the room.
3. Run the Ink Melt 4 Heater test if the room temperature
is within the correct operating range.
4. Inspect the ink loader wiring.
5. If the test fails, replace the ink loader.
The black ink load thermistor circuit is open.
1. Run the Ink Melt 4 sensor test.
2. Inspect the ink loader wiring.
3. Replace the ink loader.
The black ink load thermistor circuit is shorted.
1. Run the Ink Melt 4 heater test.
2. Inspect the ink loader wiring.
3. Replace the ink loader and/or wiring.
The black ink load thermistor is bad.
1. Run the Ink Melt 4 temperature sensor test.
2. Inspect the ink loader wiring.
3. Replace the ink loader and/or wiring.
Phaser 8400 Printer Service Manual