Oki MC770 series Maintenance Manual - page 118

45376001TH  Rev.1 

117 /

Oki  Data  CONFIDENTIAL

5. Maintenance Menu

5.2.1.4 Motor clutch test

This self-diagnostic menu is used to test the motor and clutch.

 1.   Enter the self-diagnostic mode (level 1) and press the [2], [8] key until 

"MOTOR&CLUTCH TEST" is displayed in the upper row of the display area. 

      (Pressing the [2] key increments the test item and pressing the [8] key 

decrements the test item.)

       Press the  [6] key when "MOTOR&CLUTCH TEST" is displayed. 

2.   Press either the [2] or  [8] key until the desired menu item corresponding to 

the unit to be tested in Table 5-3 is displayed in the lower row of the display 

area.  (Pressing the [2] key increments the test item and pressing the  [8]key 

decrements the test item.)

MOTOR & CLUTCH TEST

ID MOTOR

3.   Pressing the  [6]  key starts the test. The unit name starts flashing and the 

corresponding unit is activated for 10 seconds. (Refer to Figure 5-2.)

Note!

  After the corresponding unit has activated for 10 seconds, it returns to the status of 

step2, and is re-activated when the corresponding switch is pressed. 

•฀The clutch solenoid repeats turning on and off during the normal print  

   drive.  (If a clutch solenoid cannot be activated independently, the  

   motor is driven at the same time.) * "ID UP/DOWN" keeps activated  

   until the  [#]  key is pressed.

•฀

If [ ＊ ] is pressed when selecting a motor, the motor keeps    

running.

4.  When the  [#] key is pressed, the corresponding unit stops activating. (Display of 

the corresponding unit keeps displayed.)

5.  Repeat steps 2 to 4 as required. 

6.  Pressing the  [4]  key terminates the test.  (Returns to the status of step 1.)

Tray-2 hopping motor

Tray-2 hopping clutch

Tray-2 registration 

clutch

Front cooling fan

Tray-1 hopping motor

(registration motor, front motor)

MPT clutch

Tray-1 registration clutch

ID motor

Color (registration) shutter

ID UP/DOWN motor

Rear cooling fan

Fuser motor

Duplex clutch

Belt motor

Duplex solenoid

Duplex motor

Tray-1 hopping clutch

Tray-3 hopping motor

Tray-3 hopping clutch

Tray-3 registration 

clutch

Tray-4 hopping motor

Tray-4 hopping clutch

Tray-4 registration 

clutch

Figure 5-2