Xerox Phaser 790, Service Manual

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iv Phaser 790/DocuColor 2006
Initial Issue Introduction
Warnings, Cautions, and Notes
Warnings, Cautions, and Notes will be found throughout the Service Documentation. The
words WARNING or CAUTION may be listed on an illustration when the specific component
associated with the potential hazard is pointed out; however, the message of the WARNING or
CAUTION is always located in the text. Their definitions are as follows:
WARNING
A Warning is used whenever an operating or maintenance procedure, a practice, condi-
tion, or statement, if not strictly observed, could result in personal injury.
CAUTION
A Caution is used whenever an operating or maintenance procedure, a practice, condition, or
statement, if not strictly observed, could result in damage to the equipment.
NOTE: A Note is used whenever it is necessary to highlight an operating or maintenance pro-
cedure, practice, condition, or statement.
Flags
The Flag symbol indicates a reference point into a Circuit Diagram from a RAP. Instructions will
be given to check for an open circuit, a short circuit, or an intermittent condition.
Note
This symbol refers to notes which are found on the same page as the Circuit Diagram.
Parts List
In this symbol, example (PL2.1), refers to the Parts List on which the part can be found.
Adjustments
The adjustment symbol refers to an procedure in the Adjustment section of this Manual.
Test Points, Test Stakes, Test Holes
This symbol is used to indicate that a test point, test stake, or test hole is available for access-
ing a signal line. The prefix before the identification number indicates whether the access is a
test point (TP), a test stake (TS), or a test hole (TH).
Bracket
The bracket symbol indicates a Component Control Code selection in a Diagnostic Program.
Machine Safety Icons
The following safety icons are displayed on the machine:
WARNING
The Phaser 790/Dc 2006 contains an invisible laser. There is no visual indication that the
laser beam is present. During servicing, the machine is a Class 3B product because of
the invisible laser. the laser beam could cause eye damage if looked at directly. Service
procedures must be followed exactly as written without change. The service representa-
tive must observe the established local laser safety precautions when servicing the
machine. Do not place tools with a reflective surface in the area of the Charge Corotron
or the ROS opening. Do not look in the area of the ROS window if the power is On and
the laser is energized.
The following symbol and statement appear on a label in the machine. The symbol by
itself, or the symbol and the statement may also appear in the service documentation
and in the training program. When this symbol appears, the service representative is
warned that conditions exist that could result in exposure to the laser beam.
WARNING
Do not try to bypass any laser interlocks for any reason. Permanent eye damage could
result if the laser is accidentally directed into your eye.
Figure 1 Laser Hazard Symbol
Laser Hazard Statement
DANGER INVISIBLE LASER RADIATION WHEN OPEN. AVOID DIRECT EXPOSURE TO
BEAM.
CAUTION
The use of controls or adjustments other than those specified in the Laser Safety Training Pro-
gram may result in an exposure to dangerous laser radiation.
For additional information, review the Laser Safety Training program.
An arrow points to the location to install, to gain access to, or to release an object.
This symbol indicates that a surface can be hot. Use caution when reaching in the machine to
avoid touching the hot surfaces.