45376001TH Rev.1
163 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
7.5.4. (2) Abnormal operations of printer after the power is turned on
(2-1) Any operation does not start at all.
Check item Check work
Action to be taken
at NG
(2-1-1) Check the peripherals of the power supplies
Primary AC power
source that is
connected to the
printer.
Check the supplied voltage of the AC power
source.
Supply the AC
power.
5V power and 24V
power that are
supplied to the CU/
PU board.
Check the power supply voltages at the POWER
connector
of the CU/PU board. The follow
voltage must appear respectively.
PU
⑦
Pin 1,2,3,4:24V
Pin 5,6,7,8:0VP
Pin 9,10:0VL
Pin 11,13:5V
CU
⑦
Pin 1,2,3:5V
Pin 4,5,6:0VL
Pin 10,11:0VP
Pin 12,13:24V
Replace the low
voltage power
supply.
(2-1-2) Check the system connection
Connection condition
of Operator Panel
Check contents of (1-1).
Any operation of a printer will not start until the
Operator Panel is detected and is started of its
operation.
Follow the
contents of (1-1).
(2-2) Abnormal sound is heard.
Check item Check work
Action to be taken
at NG
(2-2-1) Check loss of synchronization of motor (Driver error)
Operating conditions
of the respective
motors
Check if operations of the respective motors are
normal or not by using the self-diagnostic mode.
Check if any load exists or not.
"Buzzer" sound when an error occurs.
Replace the PU
board.
Condition of the
motor cable
Check for normal wiring conditions of the
respective motors.
Perform the visual check and measure resistance
at open circuit with VOM as follows.
Remove the motor cable at the board end.
Measure resistance between the respective pins
of the removed cable and FG with VOM.
Replace the
motor cable.
Re-connect the
cable for normal
conditions.
(2-2-2) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating conditions
of the respective
motors
Check if operations of the respective motors are
normal or not by using the self-diagnostic mode.
Check if any load exists or not.
"Buzzer" sound when an error occurs.
Replace the
corresponding
consumable
item.
If any attempt
of using new
part as a trial
is going to be
made, be sure to
use the System
Maintenance
Menu FUSE
KEEP MODE.
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