B – Paper Jam At Entrance (A) - Printronix L5000 Series Maintenance Manual

1B – Paper Jam at Entrance (A)
1. Check the tractor motor encoder (TME).
a. Put the positive lead of the digital multimeter on TP5 (Z phase) on the I/O
b. While rotating the tractor motor axis, measure the voltage, which should
If voltage is not normal, replace the TME after checking the harness.
2. Check the I/O board.
a. Put the positive lead of the digital multimeter on pin 1 of CN29 on the I/O
b. Apply pressure to the tractor motor axis in the positive direction, and
c. Apply pressure to the tractor motor axis in the negative direction, and
If voltage is not normal, replace the I/O board.
Troubleshooting
CHECKLIST: TRACTOR MOTOR ENCODER (TME)
I/O BOARD
board, and the negative lead on the SG.
fluctuate between 0V and 5V.
board, and the negative lead on the SG.
measure the voltage. Normal voltage is 1V to 6V.
measure the voltage. Normal voltage is –1V to –6V.
7–65