19,0Xx.xx Errors - Printhead Calibration Faults - Xerox Phaser 8400 Service Manual

19,0XX.xx Errors - Printhead Calibration faults.

19,001.46: HFD server failed due to NVRAM operation. This fault only occurs
when the printer is set in manufacturing mode. Program fault.
19,002.47: Attempted to perform a printhead operation without the printhead
NVRAM data being loaded.
19,003.48: Scale and offset error is too large. The voltages measured have more than
a 20% error from their expected values. Something is wrong with the electronics
module or the wave amplifier.
19,004.40: The printhead and the electronics module do not match. Contact
escalated Service Support Representative for information to clear fault.
19,005.63: Wave amp overcurrent. This error can occur in too-low humidity
environments. Printer self-resets.
Troubleshooting Procedure for Printhead Calibration
Step Questions and Actions
1 1. Check and reseat all wiring to the printhead.
2. Did this correct the problem?
19,0XX.6x - Errors
19,001.68 thru 19,039.61:
a. Reset NVRAM, and then retest.
b.
Replace the NVRAM chip.
21,000.69 Errors - Diagnostic Code Version Mismatch
a. The diagnostic firmware does not match the engine firmware. Update the
diagnostic firmware for the printer. If a code updated ROM daughter board is
installed on the main board, remove the board so the printer boots using the
main board's code and diagnostics.
22,0XX.6x Errors - Jam Codes
a.
For jam codes, "Jam Codes" on page 3-55.
23,0XX.6x Errors - NVRAM Fault
a. Reset NVRAM, and then retest.
b. Replace the NVRAM.
3-36
Waveform printhead calibration program faults.
Phaser 8400/8500/8550 Color Printer
Yes
Complete. Replace in the
following order:
■
■
Module
No
Printhead
Electronics