Power-Up Error Messages and LED Codes
BIST Error Reporting
Phaser 8400/8500/8550/8560 Color Printer Service Manual
The printer has three sets of tests that are run when first powered on:
■
Built-In Self Tests (BIST)
■
Power On Self Tests (POST)
■
Print Engine Self Tests (PEST)
Note
BIST and POST errors are not stored in the fault history logs.
BIST verifies basic Electronics Module CPU operation and reports failures by
utilizing the rear interface panel PS and PE LEDs. These tests occur
immediately at power-up, before POST tests are run or the Control Panel is
initialized.
The following table defines the blink patterns associated with a failure.
BIST Error Reporting Blink Pattern Definition Table
PE LED
PS LED
Description
Off or 1
Off or 1
The power supply could not remain regulated when DC
Blink, and
Blink, and
power was applied so it was shut down.
then off
then off
Follow the troubleshooting procedures for electrical shorts
(see "Miscellaneous Electrical Troubleshooting" on
page 56) and check the power supply fuses.
On Solid
On Solid
Initialization failure. The printer is held in reset mode. This
(dimly)
(dimly)
can be caused by an Electronics Module fault or a +3.3 V
power supply regulation failure (see "Miscellaneous
Electrical Troubleshooting" on page 4-56). See also,
"Verifying Power Supply Operation" on page 4-64.
Off
PS and
Boot loader memory test failure. Ensure the printers RAM
Control
chips are properly seated and that the correct RAM type for
Panel 1/2
this printer is installed.
sec. blink
1
Rapid
CPU bridge and/or PCI bus is not communicating. Reboot
blinking
the printer, if the error still occurs, replace the Electronics
Module.
2
Rapid
ROM not responding. Reboot the printer, if the error still
blinking
occurs, replace the Electronics Module.
3
Rapid
Printer hangs during code initialization.
blinking
1. Unplug all cables from the Electronics Module.
2. Plug in the power cable.
3. Power on the Electronics Module (system).
4. If the problem still occurs, reseat the RAM DIMMs.
5. Replace the Electronics Module. For disassembly, see
"Electronics Module (PL5.0.5)" on page 8-46. For
replacement, go to the Parts List on page 9-3.
Error Messages and Codes
3-3
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