Abnormal Operations Of Printer After The Power Is Turned On; Any Operation Does Not Start At All; Abnormal Sound Is Heard - Oki C610n 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
supplied to the CU/ voltage must appear respectively.
PU board.
Pins-7, 8 and 9: 24V
Pin-1, 2 and 3: 5V
Pin-4, 5 and 6: 0VL
Pins-10, 11 and 12: 0VP
(2-1-2) Check the system connection
Connection condition Check contents of (1-1).
of Operator Panel Any operation of a printer will not start until the
Operator Panel is detected and is started of its
operation.
44205301TH Rev.1
Action to be taken
Check work
Supply the AC
power.
Set the low
voltage power
supply setting.
Replace the low
of the CU/PU board. The follow voltage power
supply.
Follow the
contents of (1-1).

(2-2) Abnormal sound is heard.

Check item
at NG
(2-2-1) Check loss of synchronization of motor (Driver error)
Operating conditions
of the respective
motors
Condition of the
motor cable
(2-2-2) Check loss of synchronization of motor (Abnormal load of the consumable item)
Operating conditions
of the respective
motors
7. Troubleshooting and repair procedure
Check work
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.
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.
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.
Action to be taken
at NG
Replace the
CU/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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