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Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-9
General Troubleshooting
Function Menu Functions for commanding more complex actions by
portions of the printer mechanism.
Initialize
Mechanism
Performs a power up mechanical
initialization sequence.
Print DMU Blot Raises the DM unit up against the
Drum, then does a Chase sequence.
The result is an oil print of the
contact of the DM unit with the
Drum (about 2/3 of the way down
the page).
Display Fault
History
Displays the contents of the Fault
History NVRAM.
NOTE Jam History can only be
accessed from customer mode.
There is no way to access the
information Service Diagnostics
Mode.
Access PE NVRAM
Parameters
Provides read/write access to
selected PE NVRAM parameters.
Clear Fault History Clears Fault History NVRAM.
Clear ISC Fault Resets the Ink Stick Count (ISC)
fault condition. To avoid a
reoccurrence, check the ink shapes
and the ink stick flags.
Clear PS NVRAM Clears the PS NVRAM to be rebuilt
with defaults at the next power up.
Clear PE NVRAM Clears the PE NVRAM to be rebuilt
with defaults at the next power up.
Set PE NVRAM to
Defaults
Sets the PE NVRAM parameters to
the default values.
Service Diagnostics Menu Map (Continued)
Menu Description