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Phaser 840/850/860/8200 Color Printer - Service Manual
NORMAL OPERATION CHECKLIST
N1
. Does the printer intermittently stop responding or "hang?
YES
NO
Go to # N2
N1a
. Does the front panel respond (opening a cover or pressing the 'i' button) but the printer appears
to be stuck in the current operation (warming up, canceling, etc.)?
YES
NO
Go to # N1b
YES
, some operations such as changing thermal states can take several minutes. For
example, it can take up to 20 minutes for the printer to cool down enough to print a duplex
image after initial warm-up or an interrupted Clean for Ink Smears cycle. Canceling a print
job may also take longer than expected if the job is still being sent to the printer by the
network or host computer.
N1b
. Does the problem occur when a file is sent, or while the printer is in Standby mode overnight?
YES
NO
Go to # N1c
YES
, disconnect the printer from the network or host computer. Use the front panel
"Shutdown" menu to verify that the printer can enter and exit Standby mode without
crashing. This type of failure is usually caused by corrupt data from the network or host
computer causing the printer to crash (rear panel LEDs stop blinking). Refer to the
Communications Checklist to verify printer port hardware.
N1c
. Does the problem occur even when the printer is disconnected from the network or host
computer?
YES
NO
YES
, reseat the main board and all components on it (RAM, ID Chip, Code DIMM, Hard
Drive). If the Printer ID chip was corrupted, resetting NVRAM may resolve the issue.
Environments prone to static electricity discharges may also cause this type of behavior.
N2
. Does the printer shutdown or reboot on its own?
YES
NO
Go to # N2a Go to #N3
N2a. Does the printer turn itself off and stay off?
YES
NO
Go to # N2b
YES, when turning the power back on does the printer:
__
Begin Power-up within 2 seconds and continue to operate
- Probably due to a power
source problem. Ensure that the printer is not on a circuit with other high power devices.
__
Begins Power-up within 2 seconds but shuts down again under certain operating
conditions
- If the shut down follows a paper jam, troubleshoot the jam issue. Otherwise use
diagnostics to test the different subsystems to isolate the component causing the over-current
condition.
__
Begins to Power-up after about 6 seconds
- Unplug the printer for at least 30 seconds
before plugging it back in and turning on the power. If it still takes 6 seconds replace the
power supply.
__
Doesn't begin to power-up
- Refer back to the Power-Up Checklist.
N2b. Does the printer automatically begin reinitializing?
YES
NO
YES, identify the codes in the fault history and refer to the Service Quick Reference Guide
for troubleshooting recommendations. The printer automatically reboots when a fault occurs
to minimize customer down time. If the fault occurs 3 times in a row the fault message will
be displayed.
N3
. Refer to the Service Quick Reference Guide for other symptoms related to electronics failures.
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