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Phaser 8400/8500/8550/8560 Color Printer Service Manual 3-37
Error Messages and Codes
■ Reservoir heater, 37,004.40 or 37,005.41
■ Drum heater error 37,006.42
■ Preheater error 37,008.44
■ Ink melters errors 37,009.45 thru 37,013.40
The printer includes several heaters powered by AC. The printer itself can
power up despite insufficient or irregular AC voltage but it may fail its AC
heater tests. This is due the test not measuring sufficient current flowing
through the heater at the moment the test runs.
Devices sharing the printer’s AC circuit shared, such as a laser printer, a
coffee maker, or a space heater, may be placing heavy intermittent demand
on the AC circuit. This sudden inductive demand creates momentary AC
voltage sag that causes the PEST test to fail.
Verify the AC power source prior to troubleshooting these errors. For wiring
diagrams to aid in diagnosing PEST faults, see
“Wiring Diagrams” on
page 10-1.
8400/8500/8550/8560 PEST Description
37,001.46: Generic PEST error. Something went wrong during the PEST process.
37,002.47: PEST Error - Printhead Left jetstack disconnect. The left jetstack is
not drawing the expected power from the supply.
37,03.48: PEST - Printhead Right jetstack disconnect. The right jetstack is not
drawing the expected power from the supply.
37,004.40: PEST - Printhead Reservoir 0 disconnect. Reservoir 0 is not drawing
the expected power from the supply.
37,005.41: PEST - Printhead Reservoir 1 disconnect. Reservoir 1 is not drawing
the expected power from the supply.
37,006.42: PEST - Drum disconnect. The Drum heater is not drawing the
expected power from the supply.
37,008.44: PEST - Preheater disconnect. The Preheater is not drawing the
expected power from the supply.
8400 PEST Description 8500/8550/8560 PEST Description
37,009.45: Inkmelt 0 (Yellow) disconnect.
The inkmelt heater is not
drawing the expected power
from the supply.
All ink melters are disconnected. All
ink melters are not drawing the
expected power. Check to see if the
ink melter’s AC cable is connected.
37,010.46: Inkmelt 1 (Cyan) disconnect.
The inkmelt heater is not
drawing the expected power
from the supply.
Inkmelt 0 (Yellow) disconnect. The
inkmelt heater is not drawing the
expected power from the supply.
37,011.44: Inkmelt 2 (Magenta)
disconnect. The inkmelt heater
is not drawing the expected
power from the supply.
Inkmelt 1 (Cyan) disconnect. The
inkmelt heater is not drawing the
expected power from the supply.