Question about Xerox Phaser 8400DX Thermal Printer
Powered on my Xerox Phaser 8400 this morning and it faults to a red light condition with the above error code. 37,004.40:35596 I would like to fix this myself if possible. Thank you Mark MacKenzie
Here is your problem.
37,004.4x - PEST_FAULT_RESERVOIR0_HEATER_DISCONNECT
PEST - Reservoir0 Disconnect Reservoir0 is not drawing the expected power from the supply.
1. Run the printhead Reservoir Heater test.
2. Verify printhead wiring.
Entering Service Diagnostics by Rebooting the Printer:
1. Turn the printer power OFF.
2. Press and hold the Back and Info buttons.
3. Turn the printer power ON while continuing to hold the Back and Info buttons
for approximately 30 seconds until the front panel indicates Diagnostic Menu.
Service Diagnostic Front Panel Button Descriptions
BACK Returns to the prior higher level menu structure, if available. Cancels the display
of test results on the front panel.
If help text is displayed on the front panel, pressing BACK will restore the current
menu item and remove the help text.
CANCEL Cancels certain functions of the printer.
INFO Provides help information, if available.
Press any key to advance through the help text.
UP Scrolls up one menu item within a menu list. This control does not ‘wrap’.
Used to increment data in tests requiring user input.
DOWN Scrolls down one menu item within test results.
This control does not ‘wrap’.
OK Enters the highlighted menu. Executes the current test item.
NOTE: Pressing any key may cause an abort if allowed by the test being performed. A power
cycle is used to arbitrarily stop a test.
Hidden Service Menu
The Hidden Service Menu provides access to a large group of information pages and
functions usable for diagnosing and correcting printer malfunctions and accessing
special features. Display the Hidden Service Menu as follows:
1. Press OK and Cancel buttons at the same time to display the Service Tools
2. With the cursor at the top of the Service Tools Menu, press both the Up Arrow
and Down Arrow buttons to display the Hidden Service Menu.
You may have to call a certified Xerox pro to service this printer. Hope this helps you.
Posted on May 30, 2009
That is a Jet Heat error. Most likely a bad print head. Could be the electronics module.
Either the print head heater has failed, or the supply voltage to the print head heater.
Either one is very expensive to replace.
Posted on May 30, 2009
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Posted on Jan 02, 2017
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