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Oki Data CONFIDENTIAL
44158801TH Rev.2
276 /
8.7.2.1 LCD does not display
Table 8.7.1
Cause
Relevant Unit
Check Method
Maintenance Method
Unplugged from
outlet
None
Visual check
Insert the AC plug into the
outlet
DC power un-
plugged from unit
None
Visual check
Insert the DC power adapter
cable into the unit
AC voltage failure
None
AC outlet voltage
check
None
Power adapter out-
put voltage failure
Power unit
Output voltage
(+24v) check
Replace the power unit
PCB failure
Main control PCB
Tester check (+24V,
GND)
Remove the cause or replace
the PCB
LCD module main
board connection
failure
LCD module main
board
Visual check
Plug the connector and secure
it firmly
8.7.2.2 Printer does not react
Table 8.7.2
Cause
Relevant Unit
Check Method
Maintenance Method
Printer cable failure
Printer cable
Visual check
Secure printer cable firmly or
replace the printer cable
Printer link failure
Main PCB
Visual check
Replace the PCB
Printer paper jam
Visual check
Remove paper
Printer paper
empty
Visual check
Insert paper
Printer problem
Visual check
See printer manual
Printer busy
Visual check
Wait till printer ready
8.7.2.3 Scanning is not performed
Table 8.7.3
Cause
Relevant Unit
Check Method
Maintenance Method
Scanner cable fail-
ure
Scanner cable
Visual check
Attach the scanner cable
Scanner link failure
Main PCB
Visual check
Replace the PCB
Scan Module
Replace the Scan Module
Scanner no power
PU PCB
Tester check
Replace the PCB
or
Replace the F6 (PU PCB)