Safety Considerations - HP 5501B Operating And Service Manual

8-12. Safety Considerations

8-13. The following paragraphs contain warnings and cautions that must be followed for your
protection and to avoid damage to the equipment.
MAINTENANCE
POWER
PROTECTIVE COVERS REMOVED. SUCH MAINTENANCE SHOULD
BE PERFORMED ONLY BY SERVICE-TRAINED PERSONNEL WHO
ARE AWARE OF THE HAZARDS INVOLVED (FOR EXAMPLE, FIRE
AND ELECTRIC SHOCK). WHERE MAINTENANCE CAN BE
PERFORMED WITHOUT POWER APPLIED, THE POWER TO THE
EQUIPMENT SHOULD BE REMOVED.
BEFORE ANY REPAIR IS COMPLETED, ENSURE THAT ALL SAFETY
FEATURES ARE INTACT AND FUNCTIONING, AND THAT ALL
NECESSARY PARTS ARE CONNECTED TO THEIR PROTECTIVE
GROUNDING MEANS.
FROM 1.2 KILOVOLTS TO 12 KILOVOLTS DC IS PRESENT ON THE
ANODE OF THE LASER TUBE IN THE HP5501B. EXERCISE
EXTREME CAUTION WHEN WORKING INSIDE THE INSTRUMENT.
THE HIGH VOLTAGE COULD CAUSE SERIOUS PERSONAL INJURY
IF CONTACTED.
PERFORMED BY SERVICE-TRAINED PERSONNEL ONLY.
When the HP5501B covers are removed, the High Voltage Power Supply
(HVPS), A2, is disconnected automatically by A1S1. For adjustments
and servicing purposes, the High Voltage Power Supply can be re-
enabled by setting the TEST-NORM switch, A1S2; to TEST after the
HP5501B covers are removed.
LASER RADIATION IS ACCESSIBLE WHEN THE HP5501B COVERS
ARE REMOVED AND THE TEST-NORM SWITCH, A1S2, IS IN THE
TEST POSITION. AVOID EXPOSURE TO THE EYES.
DESCRIBED
SUPPLIED TO THE
THE INSTRUMENT
NOTE
HEREIN IS PERFORMED
EQUIPMENT AND
SERVICE
HP5501B
WITH
WITH THE
SHOULD BE
Service
8-3