Xerox 1235N Service Guide - Page 28
Accessing special operating modes, System controller board LEDs, Menu Up 1, Enter 4
UPC - 042215474580
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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. 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. Menu Up (1) and Menu Down (5) To exit, switch the printer power off, then on. 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 firmware flash updated. Menu Up (1) and Enter (4) To exit, switch the printer power off, then on. 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. Enter (4) and Value Down (7) To exit, switch the printer power off, then on. This reinitiates the NVRAM to factory defaults for all values except copy counts. The control panel displays Ready when complete. System controller board LEDs A power LED (PWR), when illuminated, indicates +5V 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. The LED LNK is off when the printer is not installed on an Ethernet network, blinks while data is transmitted to the host. When the optional Token Ring Card is installed, the LED LNK indicates the operation of the Token Ring Card (Ethernet port operations are disabled). The LED Connection is off when the printer is not inserted into the Token Ring, blinks while the printer is attempting to insert itself into the Token Ring, on when the printer is properly inserted in the ring. The LED SPD, located next to the LNK LED, is off when the card is set for 4 megabitsper-second (MBPS), on when the card is set for 16 MBPS. 14 Phaser 1235 Network Color Printer