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Chapter 2 Service
Pre-Troubleshooting Information
Assembly-Level Service Guide 2-37
2
WARNING BEFORE APPLYING AC POWER, THE INSTRUMENT AND ALL
PROTECTIVE EARTH TERMINALS, EXTENSION CORDS, AUTO
TRANSFORMERS, AND DEVICES CONNECTED TO THE
INSTRUMENT SHOULD BE CONNECTED TO A PROTECTIVE
EARTH GROUNDED SOCKET.
ANY INTERRUPTION OF THE PROTECTIVE GROUNDING
CONDUCTOR INSIDE OR OUTSIDE THE INSTRUMENT OR
DISCONNECTION OF THE PROTECTIVE EARTH TERMINAL
WILL CAUSE A POTENTIAL SHOCK HAZARD THAT COULD
RESULT IN PERSONAL INJURY. INTENTIONAL
INTERRUPTION IS PROHIBITED.
Any maintenance and repair of the opened instrument under voltage
should be avoided as much as possible and, if necessary, should be
carried out only by a skilled person who is aware of the hazards involved
(for example, fire and electric shock).
Recommended Test Equipment
Test equipment recommended for testing and troubleshooting the
HP 53131A/132A/181A is listed in Chapter 1, “Performance Tests.”
Substitute equipment may be used if it meets or exceeds the required
characteristics listed in Table 1-1.