Sharp FO-4450, Service Manual

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FO-4450U/FO-CS1
No. 00ZFO4450USME
Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
SERVICE MANUAL
Laser Wave Length : 770-795 nm
Laser Pulse Times : 51.3 ns
Laser Output Power : 5 mW
CAUTION
This laser printer is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH or IEC60825-1 standard. This
means that this machine does not produce a hazardous laser radiation. The use of controls, adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved on the eyes retina, there is
danger of spot damage to the retina.
The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of servicing.
1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a unit, not an individual part.
2) Do not look into the machine with the main switch turned on after removing the toner/developer unit and drum cartridge.
3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected when removing and installing the
optical system.
4) The cover of Laser Printer Unit contains the safety interlock switch.
Do not defeat the safety interlock by inserting wedges or other items into the switch slot.
Illustration: FO-4450
FACSIMILE
FO-4450
MODEL
OPTION:PAPER CASSETTE
FO-CS1
MODEL
MODEL SELECTION CODE DESTINATION
FO-4450 U U.S.A./Canada
Illustration: FO-CS1
OPTION
Toner cartridge: FO-44ND/FO-50ND
Drum cartridge: FO-47DR
Option memory: FO-8MK
Verification stamp: FO-45VS
Paper cassette: FO-CS1
Chapters 2, 3, 7 and 8 of this manual are omitted because they are partly common to the FO-4400U. Please
refer to previous service manual FO-4400U (00ZFO4400USME) for these chapters.