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4. Check the lamp cooling blower (VEF1).
a. Check the ozone filter. If it is clogged, remove any blockage.
b. Check the voltage: Put the positive lead of the digital multimeter on pin 3 of
c. Check the voltage when the VEF1 comes on: Put the positive lead of the
d. Check the voltage after powering ON. If it is not about 0V, replace the DC
e. Check the voltage when the VEF1 comes on. If it is not about 24V, replace
f.
5. If a paper jam occurs with fan–fold paper, check the drum motor.
Troubleshooting
CN33 on the I/O board, and the negative lead on the SG. Normal voltage is
about 5V after powering ON.
digital multimeter on pin 1 of CN6 of the DC power supply board, and the
negative lead on pin 2. If the voltage is not about 0V, replace the I/O board.
power supply board.
the DC power supply board.
Ensure that the VEF1 activates when powering ON (that there is exhaust
action). If it does not activate, replace the VEF1.
See "Tractor Speed Too High/Low" on page 7–53.
See "Drum Motor Fail" on page 7–59.
7–35
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