24xx

Top-Of-Forms Service Check

 

FRU

Action

 

 

 

1

Top-Of-Form

Check that the top-of-form sensor and its flag

 

Sensor

are properly installed and are not damaged.

 

 

 

2

Logic Board

Remove the paper and set the paper select

 

 

lever to the cut sheet position and turn the

 

 

printer on.

 

 

Measure the voltage between logic board

 

 

connector CN6-2 (TOF signal) and CN6-1

 

 

(GND). You should receive the following

 

 

voltage readings:

 

 

• When there is paper in the printer the

 

 

voltage should be 0 V dc.

 

 

• When there is no paper in the printer the

 

 

voltage should be 5 V dc.

 

 

Replace the top of form sensor if the voltage is

 

 

incorrect.

 

 

Replace the logic board if the voltage is

 

 

correct, and reset the “Bidirectional Print

 

 

Adjustment” on page 4-4.

 

 

 

2-32Service Manual

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Image 50
Oki 2400 manual Top-Of-Forms Service Check