Laser Optics
G160/G161 3-2 SM
3.2 LASER OPTICS
 Turn off the main power switch and unplug the printer before you perform the
procedures in this section. Laser beams can cause serious eye injury.
3.2.1 CAUTION DECAL LOCATIONS
The caution decal is attached as shown below
 Be sure to turn off the main power switch and disconnect the power plug from the
power outlet before you perform any disassembly or adjustment of the laser unit.
This printer uses a class 3B laser beam with a wavelength of 655 nm and an
output of 7 mW. The laser can cause serious eye injury.
3.2.2 LD UNIT
Replacement
 Print the SMC report with SP 5990 2 before you replace the LDU.
1. Electrical board unit (see the Service Manual for G104: ‘Electrical Components –
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