2) Abnormal Operations Of Printer After The Power Is Turned On; Abnormal Operations Of Printer After The Power Is Turned On; Any Operation Does Not Start At All; Abnormal Sound Is Heard - Oki C810 Maintenance Manual

Oki Data CONFIDENTIAL
7.5.2.(2)

Abnormal operations of printer after the power is turned on

(2-1) Any operation does not start at all.

Check item
(2-1-1) Check the peripherals of the power supplies
Primary AC power Check the supplied voltage of the AC power
source that is source.
connected to the
printer.
voltage setting of Measure the AC voltage supplied.
the lower voltage Check the power voltage setting of the
power supply unit equipment in use.
(100v system/230v (Check the shorting plug that is used for
system) selection of the voltage power supplies. [CN6])
Shorting plug is Used/Not used = 100v system/
230v system.
5v power and 24v Check the power supply voltages at the POWER
power that are connector no. 10 of the PU board. The follow
supplied to the PU voltage must appear respectively.
board.
Pins-4, 5 and 6: 24v
Pin-7: 5v
Pin-8: 0vL
Pins-1, 2 and 3: 0vP
(2-1-2) Check the system connection
Connection Check contents of (1-1).
condition of Any operation of a printer will not start until the
Operator Panel Operator Panel is detected and is started of its
operation.
44015503TH Rev. 1
Action to be taken
Check work
at NG
Supply the AC
power.
Set the low
voltage power
supply setting.
Replace the low
voltage power
supply.
Follow the
contents of
(1-1).

(2-2) Abnormal sound is heard.

Check item
(2-2-1) Check loss of synchronization of motor (Driver error)
Operating conditions Check if operations of the respective motors are
of the respective normal or not by using the self-diagnostic mode.
motors Check if any load exists or not.
"Buzzer" sound when an error occurs.
Condition of the Check for normal wiring conditions of the
motor cable 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.
(2-2-2) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating conditions Check if operations of the respective motors are
of the respective normal or not by using the self-diagnostic mode.
motors Check if any load exists or not.
"Buzzer" sound when an error occurs.
7. TROUBLESHOOTING PROCEDURE
Action to be taken
Check work
at NG
Replace the PU
board.
Replace the
motor cable.
Re-connect the
cable for normal
conditions.
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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