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Control panel message Description Recommended action
50.X FUSER ERROR
For help press
A fuser error has occurred.
The following are specific fuser errors:
50.1 - A low fuser temperature error has
occurred in the main thermistor.
50.2 - A fuser warm-up service error has
occurred.
50.3 - A high fuser temperature error has
occurred in the main thermistor.
50.4 - A faulty fuser error has occurred.
50.8 - A low fuser temperature error has
occurred in the sub-thermistor.
50.9 - A high fuser temperature error has
occurred in the sub-thermistor.
These errors may be due to an
inadequate power supply, inadequate
line voltage, or a problem with the fuser.
1. Turn the printer off and then back on.
2. If the message persists, contact
HP Support at http://www.hp.com/
support/lj4650.
51.2Y
PRINTER ERROR
For help press
alternates with
51.2Y
PRINTER ERROR
To continue
turn off then on
Either a beam detects an error, or a
laser error has occured.
The values of Y are:
Y Description
0 - Black
1 - Cyan
2 - Magenta
3 - Yellow
1. Turn the printer off and then back on.
2. If the problem persists, contact
HP Support at http://www.hp.com/
support/lj4650.
53.XY.ZZ CHECK RAM
DIMM SLOT X
An error occurred on some memory of
the printer.
Values of X, Y, and ZZ are:
X Device Location
1 Slot 1
2 Slot 2
Y Bank Number
1 Bank number 1
2 Bank number 2
3 Bank number 3
4 Bank number 4
ZZ Error Number
01 Unsupported memory
02 Unrecognized memory
03 Under minimum memory limit
04 Exceeded maximum memory limit
05 Failed RAM test
If prompted to do so, press to
continue. The printer should come to the
Ready state, but will not make full use of
all memory installed.
Otherwise:
1. Turn the printer off.
2. Verify that all DDR SDRAM meets
specifications and is correctly seated.
3. Turn the printer on.
4. If the problem persists, contact
HP Support at http://www.hp.com/
support/lj4650.
Control panel messages (continued)
152 Chapter 8 Problem solving ENWW