Xerox Phaser 840 Service Manual page 58

Table 2-3 POST (Power On Self Test) Error Messages (cont'd.)
PS, PE and Front
Front Panel Panel
LEDs Error
Code
Soft Error 14.xx
Soft Error 15.01
Soft Error 15.02
Soft Error 15.03
Soft Error 15.04
Soft Error 16.01
17 17.xx
Soft Error 18.xx
20 20.01
20 20.02
21 21.01
21 21.02
Soft Error 21.03
Soft Error 21.04
21 21.05
2 - 42 Phaser 840/850/860/8200 Color Printer - Service Manual
Description
Real Time Clock test failures. These are soft errors and will allow
the printer to continue printing, though all time stamping activities
will be incorrect. Reseat then replace the main board.
RAM SODIMM in slot 1 failed. Ensure supported RAM is being
used. Reseat then replace the RAM SODIMM.
RAM SODIMM in slot 2 failed. Ensure supported RAM is being
used. Reseat then replace the RAM SODIMM.
RAM SODIMM in slot 1 incompatible. Ensure supported RAM is
being used. Reseat then replace the RAM SODIMM.
RAM SODIMM in slot 2 incompatible. Ensure supported RAM is
being used. Reseat then replace the RAM SODIMM.
Less than 64 MB of RAM is detected. This is the minimum RAM
required. Add more RAM, reseat the RAM SODIMM(s), then
replace the RAM SODIMM(s).
An unrecognized option card is responding. This failure should
never occur, the Phaser 860 does not support optional cards. If this
error occurs check the main board to power control board
connector for damage. Replace the main board and then the power
control board.
Optional Token Ring card failures. This failure should never occur,
the Phaser 860 does not support optional cards. If this error occurs
check the main board to power control board connector for
damage. Replace the main board and then the power control
board.
I/O Left not detected. Verify the IIC cable connetion. Replace the
I/O Left.
I/O Left partially responding. Verify the IIC cable connection.
Replace the I/O Left.
Printhead not responding. Verify printhead cable is properly
attaced. Reseat main board, then replace printhead.
Printhead NVRAM is not responding. Verify printhead cable is
properly attached. Reseat main board, then replace printhead..
Printhead ink level sensed below range. Ensure the ink level
connector on the printhead is plugged in. Reseat main board, then
replace the printhead.
One color is sensed out of range for the printhead ink level. Ensure
the ink level connector on the printhead is plugged in. Reseat main
board, then replace the printhead.
Printhead reservoir thermistor is above range. Ensure the
thermistor cable is plugged in. Reseat main board, then replace the
printhead.