Safety Inspection Procedure; Performing A Power-Receptacle Safety-Check - InfoPrint 4247 Z03 Maintenance Information

Safety inspection procedure

1. Check that the printer is installed near the socket-outlet and that the socket-outlet is easily accessible.
2. Turn off and unplug the printer.
3. Check exterior covers for damage (loose, broken, or sharp edges).
4. Check top main cover interlock operation (see T&D17—Top cover interlock test).
5. Check the power cord for:
a. A third-wire ground connector in good condition. Use a meter to measure the third-wire ground continuity
for 0.1 ohm or less between the external ground pin and frame ground.
b. A power connector ground wire fastened with a screw and star washer near the power supply. Repair as
needed.
c. A second star washer between the frame ground and the wire lug.
d. A power cord of the appropriate type, shipped for the 4247 printer.
e. Insulation in good condition (not frayed nor worn).
6. Remove the covers (see Covers).
7. Check that the power supply cover has not been removed nor tampered with.
8. Check for any obvious non-InfoPrint Solutions Company alterations.
9. Check inside the unit for any obvious unsafe conditions, such as metal-filing contamination, water or other
liquids, or signs of fire or smoke damage.
10. Check for worn, frayed, or pinched cables.

Performing a power-receptacle safety-check

A trained service representative or a qualified electrician should perform all checks necessary to ensure safe
operation. These should include the following checks and any other required by local regulations.
v Check the ac voltage at all associated power receptacles (see "4247 Model Z03 nominal ac input power
requirements" on page 17).
v Check that all associated power receptacles are properly grounded.
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Safety inspection