HP E1411A, Руководство по обслуживанию

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Avoid unnecessary component unsoldering and soldering. Excessive
replacement can result in damage to the circuit board and/or
adjacent components.
•
Do not use a high power soldering iron on etched circuit boards as
excessive heat may lift a conductor or damage the board.
•
Use a suction device or wooden toothpick to remove solder from
component mounting holes. When using a suction device, be sure
the equipment is properly grounded to prevent electrostatic
discharge from damaging CMOS devices.
Post-Repair Safety
Checks
After making repairs to the HP E1411 multimeter, inspect the multimeter
for any signs of abnormal internally generated heat, such as discolored
printed circuit boards or components, damaged insulation, or evidence of
arcing. Determine and correct the cause of the condition. Then run the
self-test (*TST? command) to verify that the multimeter is functional.
64 Service Chapter 8