Xerox 2135DX - Phaser Color Laser Printer, Service Manual

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Service Guide
11
Accessing special operating modes
The printer can be placed in diagnostics or other operation modes by
simultaneously holding the
Menu Up (1) and the Enter (4) keys as you turn on
the printer.
System controller board LEDs
A power LED (PWR), when illuminated, ind5V is being supplied to the
system controller board.
The LED HDD, illuminates to flashes to indicate hard drive read/write activity.
LED GIO2 flashes to indicate proper CPU operation.
LED GIO3; off indicates 10baseT connection, on indicates 100baseT.
Entering special operating modes
Key Combination Mode
On Line (0) and
Enter (4) This enables the Reset Menu to become available at the control panel.
The Reset Menu is not normally available to the customer, as it contains
the ability to format devices and perform a factory reset of all items.
The control panel displays Ready when completed.
To exit, switch the printer power off, then on.
Menu Up (1) and
Menu Down (5) This forces the Software Update Mode on the parallel port.
The Control Panel will display Entering... on the first line and Download
Mode on the second line. This indicates that the printer is ready to be
have its flash firmware updated.
To exit, switch the printer power off, then on.
Menu Up (1) and
Enter (4) Forces the printer into the Engine Diagnostics Mode , bypassing the
controller.
The control panel displays Diag Mode 1? in the first line. This indicates
that the printer is ready to enter diagnostics.
To exit, switch the printer power off, then on.
Enter (4) and
Value Down (7) This reinitiates the NVRAM to factory defaults for all values except copy
counts and consumable counts.
The control panel displays Ready when complete.