Pf - Paper Feed Errors - MUTOH Rockhopper 3 Troubleshooting Manual

2.3 PF - PAPER FEED ERRORS

E065 - PF Motor Err
E067 - PF Encoder Err
E069 - PF Timeout Err
E071 - PF OverCurrent
E083 - PF2 OverCurrent
The Paper-Feed motor is failing or the electronics doesn't receive an encoder-signal from the PF sensor
correctly.
The electronics wants to move the Paper Feed system (PF). The driver IC on the mainboard provides power
to the X-motor (1). Therefore the X-motor starts to turn, resulting in a PF movement (2). PF movement is
detected via the encoder-sensor (3), and gives feedback, back to the electronics.
This closed-loop system is fully controlled in the electronic circuit of the mainboard. It regulates the direction,
electrical current and the speed of the carriage extremely precisely.
PF Encoder Disk
X-Encoder
Forward movement
Grid Roller
Backward movement
Grid Roller
2
PF-X-motor
1
Power supply to motor from electronics
Step 1 :
Mechanical movement X encoder
Step 2 :
X encoder gives feedback to mainboard
Step 3 :
3
Mainboard
19
Troubleshooting
AP-74700 – Rev. 1.0 – 10/03/2008