HP D640 High-Volume Printer - User Manual (Printer and Accessories), C5620-90024

Call Engineer Error Messages and Codes
A-10 Printer Messages
Fuser
temperature
low alarm
SVC 29 The fuser unit temperature is
below a normal level.
Verify that the fuser unit is correctly
installed and that all printer doors and
covers are closed. Press returns, call from
the front panel. If the error message
persists, refer to “Removing the Fuser” on
page 4-30 and replace the fuser. If this error
code returns, call your service
representative.
Toner motor
alarm
SVC 50 The motor which drops toner
into the printer is not working
correctly and may need to be
replaced.
Open the upper right cover and check that
the connector at the right side of the toner
hopper is connected. If it is connected
properly, call your service representative.
Toner screw
rotation alarm
SVC 51 The waste toner auger is not
working correctly and may
need to be replaced.
To fix this error call your service
representative.
Developer
discharge
alarm
SVC52 During the developer
replacement procedure the
old developer might not be
evacuated properly. The
problem could be mechanical
or electrical.
To fix this error, call your service
representative.
Developer
shutter alarm
SVC54 During the developer
replacement procedure, the
shutter releasing the old
developer did not open
correctly. The problem could
be mechanical or electrical.
To fix this error, call your service
representative.
Toner auto-
adjustment
alarm
SVC 56 After the developer was
replaced, the automatic toner
calibration could not be done
correctly. The problem could
be mechanical or electrical.
Purge developer and try again with a new
bottle. If this error code persists, call your
service representative.
Toner density
high alarm
SVC 57 The concentration of toner in
the developer unit is above
the normal range.
Purge developer and try again with a new
bottle. If this error code persists, call your
service representative.
Toner density
low alarm
SVC 58 The concentration of toner in
the developer unit is below
the normal range.
Purge developer and try again with a new
bottle. If this error code persists, call your
service representative.
Toner density
voltage high
alarm
SVC 59 The reference voltage used
to measure the toner
concentration in the
developer unit is above the
normal range.
Purge developer and try again with a new
bottle. If this error code persists, call your
service representative.
Error
Message
Code Description Action