Technical data

4.5 Erratic Operation
4.5.1 Bad Grounds
Inspect the condition of all the frame grounds within printer. Make sure the
following connections are tight:
• Erase board to scanner shield to printer frame green wire and ring
connector grounds
• LVPSA to the printer frame green wire and ring connector ground
• Metal straps that connect the lower section to the front and exit-side of the
printer
Check the installation and condition of the following spring metal grounding
contacts:
• Front transfer/separation ground springs
• Top door inside print drum axle springs
• Registration pinch and pressure rollers, located at the front of the printer
• Registration transport grounding springs, located at the front of the printer
4.5.2 Line Power or LVPSA Problems
Erratic operation can be caused by a low-voltage power supply. Swap the
LVPSA to see if the problem goes away. Look for a short or open circuit in the
distribution network or in a discreet device. See Section A.5 for diagrams of
the low-voltage power distribution network.
The line voltage might be too low, high, unstable, or electrically noisy. A
normal DVM is all right for measuring power line voltage but other equipment
and special training is necessary to thoroughly test a power line.
• Erratic operation can occur if power line voltage goes out of the range of
104–127 Vac. See Appendix E for other specifications.
Warning: Be careful if using a DVM to measure the ac power line voltage.
There is a shock and fire hazard.
The DEClaser 3200 printer is reasonably tolerant of power line noise. Noise
can be generated by other equipment the shares line power. Motors, welding
equipment, and other sorts of electrical devices can upset the operation of the
printer.
• Try moving the printer to another power line plug in a different part of the
building.
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