Error code Description Action
51 The flash memory is defective. See
“Flash memory failure service check” on
page 138.
52 The flash memory is insufficient. See
“Insufficient flash memory service check” on
page 139.
53 Unformatted flash was detected. See
“Flash memory failure service check” on
page 138.
54 The printer was not able to connect with the
network.
See
“Network service check” on page 140.
55 The internal option installed is unsupported. See
“Unsupported internal option service check”
on page 142.
56 The parallel port, serial port, or standard USB port is
disabled.
See
“Disabled port service check” on page 143.
57 Some held jobs were not restored due to
configuration change.
See
“Unrestored held jobs service check” on
page 143.
58 Excess number of options detected:
• Too many flash or optional firmware cards are
installed.
• Too many input trays are installed.
See
“Excess options service check” on page 144.
59 The input option or output option is incompatible. See
“Incompatible hardware option service check”
on page 145.
61 The hard disk is defective. See
“Hard disk failure service check” on page 145.
62 The hard disk is full.
80 The printer requires maintenance. The appropriate
maintenance kit needs to be installed.
See
“Maintenance kit service check” on page 146.
82 The waste toner bottle is full or nearly full. See
“Cartridge or photoconductor error service
check” on page 135.
84 The photoconductor supply is low, very low, or
empty.
88 The toner cartridge supply is low, very low, or empty.
Cartridge or photoconductor error service check
Action Yes No
Step 1
a Make sure that the cartridge or photoconductor is installed.
b Check if the cartridge or photoconductor is supported, and replace if
necessary.
Does the problem remain?
Go to step 2. The problem is solved.
7421
Diagnostic information
135
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