99Y Errors; Symptoms; Base Printer Symptoms - Konica Minolta Bizhub 4700P Service Manual

4.6.18 99y errors

99y error messages
Error Description
code
990.xx An equipment check condition has occurred in the specified device,
but the device is unable to identify the exact component failure—
device can be:

Engine, Duplex, Tray x, Env Feeder

Output Bin x (Note: Used for single bin devices)

Bins x to y (Note: Used for multiple bin devices)
Call the next level of support.
991.xx The specified device has detected an equipment check in its controller
board—device can be:

Engine, Duplex, Tray x, Env Feeder

Output Bin x (Note: Used for single bin devices)

Bins x to y (Note: Used for multiple bin devices)
Call the next level of support.

4.7 Symptoms

4.7.1

Base printer symptoms

Symptom
Buttons on the control panel failed to
respond
No display
Printer not communicating with host
Machine does not POR (no power)
Toner starvation and 31.4x error
code is displayed
bizhub 4700P/bizhub 4000P Service Manual
Action
Go to Control panel button service
Go to Control panel service
Go to USB print service
1. Check the power cord for continuity. Replace if necessary.
2. Make sure the nominal voltage source is within specification. See
Electrical specifications.
3. If the problem remains, go to
Go to Toner starvation service
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Action
Go to
error service check.
check.
check.
check.
Dead machine service
check.
Option communication
check.