MAIN DRIVE AND IMAGE UP/DOWN SHIFTING DRIVE SECTION
C262/C265 3-138 SM
Copy Image Check Procedure after Main Drive and Image Up/Down
Shifting Drive Section Re-assembly
When the main drive mechanism is disassembled and assembled, the image
position on copies may fluctuate due to play in the drive components.
Whenever you disassemble the main drive mechanism, you must check the
following items for the copy quality:
When the image position on copies is not constant
• Check the pressure cylinder position.
Use the positioning shaft (a special tool) to check if the position of the
pressure cylinder is correct. See steps 19 through 23 in "Reassembly
Procedure" of 3.11.2 Main Drive Mechanism (Main Drive Timing Belt).
When the leading edge margin of copies (6 mm) is not constant
• Check the position of the printing pressure cams.
Use the positioning shaft (a special tool) to check if the cam position is
correct. See steps 19 through 24 in "Reassembly Procedure" of 3.11.2 Main
Drive Mechanism (Main Drive Timing Belt).
• Check if you followed steps 13 through 16 in "Reassembly Procedure" of
3.11.2 Main Drive Mechanism (Main Drive Timing Belt).
Other procedures if copy image problems are still detected
• Check the image up/down shift drive unit position.
See 3.11.7 Image Up/Down Shift Drive Unit Position Adjustment. Also, see
3.11.6 Image Up/Down Shift Worm-gear Position Adjustment.
• Check the image shift gear play.
See 3.11.8 Image Shift Gear Pressure Adjustment.
• Check the scissors gear position.
See step 3 in "Reassembly Procedure" of 3.11.2 Main Drive Mechanism
(Main Drive Timing Belt). Also, see 3.11.5 Scissors Gear Position
Adjustment.
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