Service manual

4 QMS 3260/4032 Laser Printer - Base Engine Technical Manual
Release Version 11-97
Laser Assembly
This printer uses a laser as part of the printing process. The laser beam is a very
powerful, straight, narrow beam of light that produces extreme heat at its focal
point. The laser beam in this printer is invisible. Although you cannot see the
beam, it can still cause severe damage. Direct eye exposure to the laser beam
may cause eye injury or blindness.
Never place a mirror or a reflective tool or object in the laser beam path.
To avoid permanent eye damage, follow these directions:
• Before starting any service procedure, switch off the printer power and unplug the power cord from
the wall outlet.
• Do not disassemble the ROS Assembly or any laser component that displays a Laser Warning
Sticker.
• Use caution when you are working around the ROS Assembly or when you are performing laser
related repair procedures.
• Do not disassemble the printer in such a way that the laser beam can exit the print engine during a
print cycle.
Safety Components
Make sure fuses, interlock switches, covers and panels are all functioning properly after you have rein-
stalled or replaced them.
Warning Labels
Throughout the printer, warning labels are displayed on potentially dangerous components. When you ser-
vice the printer, check to make sure that all warning labels are in place.
Read and obey all warning messages.