Grounding Requirements; Printer Paper Loading - HP 9020 Service Manual

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General Information
8. NEVER WORK ALONE. Be familiar with location of power switches in your area and what
they control. Turn off power to free a fellow worker from high voltage without energizing
yourself.
9. Keep work area neat, free of any interfacing conductive material, and free of any sharp
objects. Remember, a reaction to a shock can cause one to strike nearby objects which can
result in a serious injury.
10. Always leave safety shields in place unless work must be done on circuits behind the shields.
11. Never leave work area with high-voltage equipment energized and high-voltage circuits
exposed.
12. Have available and use approved warning signs and tags where high-voltage testing is in
process.
13. Do not make measurements in a circuit where a corona is present. Corona can be identified
by a pale-blue color, from a buzzing sound emanating from sharp metal points in the circuit,
or from the odor of ozone.
14. Hands, shoes, floor, and workbench must be dry. Avoid making measurements under
humid, damp, or other environmental conditions that could affect the dielectric withstanding
voltage of the test leads or instruments.
15. All test procedures and safety procedures should be strictly followed at all times.
Grounding Requirements
To protect operating personnel, the National Electrical Manufacturers' Association (NEMA) recom-
mends that the computer chassis be grounded. The computer is equipped with a three-conductor
power cable which, when connected to an appropriate power receptacle, grounds the computer
chassis.
Printer Paper Loading
CAUTION
HP-SUPPLIED THERMAL PAPER IS FORMULATED SPECIFICAL-
LY TO WORK WITH THE BUILT-IN PRINTER. THERMAL PAPER
FROM OTHER SOURCES MAY OR MAY NOT WORK WITH YOUR
INTERNAL PRINTER. THEREFORE HP IS NOT RESPONSIBLE FOR
DAMAGES CAUSED BY USING NON-HP-APPROVED PAPER.
When the printer detects an out-of-paper condition, it stops printing. If it runs out of paper while
printing, it finishes the current page and ejects it before stopping.
HP replacement paper is available in either metric or English sizes, and in either blue or black print.
Chapter 5 lists the part numbers and descriptions of HP replacement paper. One box of paper
contains four packs of 330 pages each for a total of 1320 sheets per box. Call HP's toll-free order
number, 800-538-8787, to order replacement paper.
Procedures for installing paper in the printer are contained in Appendix B.