WorkCentre Pro 423/428 2-68 CHAPTER 2 TROUBLESHOOTING
03/02 2.3 Level 2 Troubleshooting
Internal
Code
Error Description Corrective Action
81D4 User buffer is full with data. (Serial data
receive buffer to job or monitor became
full)
81D5 Abnormal sequence of received serial
data from DC-SYS.
81E0
Unable to get message sent from DC-
SYS or to send message to panel
(EM_DCM_MSG_IMP)
Check connections between UI-
M/F MAIN PWB-MCU/SW PWB,
and turn the power OFF/ON.
81E1 Invalid message contents
(EM_DCM_MSG_AN)
81E2 DC-SYS and UI-SYS communication
timeout in initialize sequence
(EM_DCM_TMOUT)
Check connections between UI-
M/F MAIN PWB-MCU/SW PWB,
and turn the power OFF/ON.
81E3
Failure in rd_event() inside DC monitor.
(EM_DCM_EVREAD)
81E4 Failure in a_post() inside DC monitor.
(EM_DCM_EVPOST)
81E5 Failure in booting up and opening DCIF
monitor. (EM_DCM_DCIF_DWN)
81E6 Unsuccessful message issue to DC-SYS
in initialize sequence
(EM_DCM_MSG_EXP)
81E7
Error in system data read/write sequence
with DC-SYS ( EM_DCM_SYSD )
81E8 EM_DCM_DC_INIT
During the initialization sequence,
“Initialization Complete Instruction”
informed of failure.
Execute diagnostic on DC-SYS
system data read/write. If rebooting
the system is unsuccessful,
replace DC-SYS.
81E9
Unsuccessful management of error
registration field by DC monitor (
EM_DCM_OTHERS )
81EA Time out while executing system data
read/write sequence.
(EM_DCM_TMOUT_CF)
Check the connection between
MCU/SW PWB-M/F MAIN PWB or
UI-M/F MAIN PWB connector, then
reboot the M/C. If there are any
system data with wrong value,
clear them and reboot the M/C.
Internal
Code
Error Description Corrective Action
81EB Time out while waiting for the response
of status request from DC-SYS.
(EM_DCM_TMOUT_STAT)
Check MCU/SW PWB-M/F MAIN
PWB connector, then reboot the
M/C.
81EC No response from DC-SYS after
CUST_OUT
(EM_DCM_TMOUT_CUSTOUT)
Check MCU/SW PWB-M/F MAIN
PWB connector, then reboot the
M/C.
81ED Delay in DC-SYS response to RM JOB
activation request and beyond RM JOB
end time
Reboot the M/C.
8200 STORE JOB Failure. Timeout when
response from DC-SYS was awaited in
Store job.
Check MCU/SW PWB-M/F MAIN
PWB connector, then reboot the
M/C. Operate again.
8210 COPY JOB Failure (Internal process
error)
EMG_CP_JOB_NG
Check M/F MAIN PWB, MCU/SW
PWB, and CONTROL PANEL for
connections.
Replace M/F MAIN PWB,
MCU/SW PWB, or CONTROL
PANEL.
8212 Event Failure (Illegal event received)
EMG_CP_EVT_ILLEGAL
Check M/F MAIN PWB and
CONTROL PANEL for
connections. Replace M/F MAIN
PWB or CONTROL PANEL.
8213 Wrong Event Parameter
EMG_CP_EVTPRM_ILLEGAL
Check M/F MAIN PWB and
CONTROL PANEL for
connections. Replace M/F MAIN
PWB or CONTROL PANEL.
8214 Wrong Event Sequence
EMG_CP_EVTSEQ_ILLEGAL
Check M/F MAIN PWB and
CONTROL PANEL for
connections. Replace M/F MAIN
PWB or CONTROL PANEL.
8215 Time out inside MF
EMG_CP_MF_TIMEOUT
Check M/F MAIN PWB and
CONTROL PANEL for
connections. Replace M/F MAIN
PWB or CONTROL PANEL.
8216
DC time out (no response)
EMG_CP_DC_TIMEOUT
Check M/F MAIN PWB and
MCU/SW PWB for connections.
Replace M/F MAIN PWB or
MCU/SW PWB.