(9)Blank copy directionFeeding

Cause/Defect area

Step

Check items

Measures

High-voltage transformer

1

High-voltage transformer output defective?

Adjust output and correct circuit, or replace defec-

(transfer roller/

 

 

tive transformer.

developer bias)

 

 

 

Process unit (EPU)/

2

Process unit (EPU) or developer unit in-

Check/correct developer sleeve coupling engaging.

developer unit set position

 

stallation defective?

Check EPU sliding mechanism.

Developer drive system

3

Developer sleeve and mixer rotate?

Check/correct developer drive system.

Developer material

4

Developer material properly transported?

Remove foreign matter from developer material, if

 

 

 

any.

Developer pole position

5

Magnetic brush phase error?

Adjust developer pole position.

Doctor blade position

6

Doctor sleeve gap incorrect?

Adjust gap with doctor-sleeve jig.

Drum

7

Drum rotating?

Check that drum shaft is inserted.

 

 

 

Check drum drive system.

Harness for SCM, SIC, IMC

8

Connectors securely connected?

Re-connect connectors securely.

and LGC boards

 

Any open-circuited harness between

Replace harness.

 

 

boards?

 

January 2000 © TOSHIBA TEC

4 - 65

FC-22 TROUBLESHOOTING

Page 191
Image 191
Toshiba FC-22 manual Check/correct developer sleeve coupling engaging