Xerox WorkCentre Pro 423 Service Manual page 105

Internal Error Description
Code
8C66 MF Frame length is over.
8C67 MF failure
8C68 MF FF2
8C70 An unexpected message or data came
from PANEL-SYS (due to S/W bug)
8C71 TEL Job dial ring buffer full
8C72 Failure in obtaining a message from
PANEL-SYS (importMsg return value is
incorrect.)
8C73 Failure in sending a message to PANEL-
SYS (exportMsg return value is
incorrect.)
8C74 Failure in attaching pnlif mon at M/C
initialization
WorkCentre Pro 423/428
Corrective Action
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Internal Error Description
Code
8C75 No response is made after pnlif mon is
attached (at M/C initialization).
8C76 An event parameter received from
another task on MF-SYS is wrong.
(System error)
8C77 An undefined job status event was
received from Job Scheduler.
8C78 CONTROL PANEL response awaiting
time out (at M/C initialization)
8C79 Job Scheduler was requested to activate
a job, and an error occurred. (S/W bug is
a major cause)
8C7A Job Memory Register Process failure
(due to S/W bug)
8C7B Registered Job Memory Cancel Process
failure (due to S/W bug)
8C7C Excess message resend to panel
03/02
2-73
Corrective Action
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
Check CONTROL PANEL-
MCU/SW PWB/M/F MAIN PWB
connections. Check M/F MAIN
PWB and ROM. Replace
CONTROL PANEL.
2.3 Level 2 Troubleshooting
CHAPTER 2 TROUBLESHOOTING