HP 1660E Series Service Manual page 178

WARNING
CAUTION
Replacing Assemblies
This chapter contains the instructions for removing and replacing the assemblies of
the logic analyzer. Also in this chapter are instructions for returning assemblies.
Hazardous voltages exist on the power supply, the LCD display, and the LCD inverter board.
To avoid electrical shock, discormect the power from the instrument before performing the
following procedures. After discormecting the power, wait at least three minutes for the
capacitors on the power supply board to discharge before servicing the instrument.
Damage can occur to electronic components if you remove or replace assemblies when the
instrument is on or when the power cable is cormected. Never attempt to remove or install
any assembly with the instrument on or with the power cable cormected.
Replacement Strategy
These replacement procedures are organized as if disassembling the complete
instrument, from the first assembly to be removed to the last. Some procedures say
to remove other assemblies of the instrument, but do not give complete instructions.
Refer to the procedure for that specific assembly for the instructions. Use the
exploded view of the instrument on the next page as a reference during the
replacement procedures.
CAUT ION Electrostatic discharge can damage electronic components. Use grounded wriststraps and
_ _ _ _ _ _ _ _ mats when perfonning any service to this logic analyzer.
Tools Required
#10 TORX screwdriver
#15 TORX screwdriver
#1 Posidrive screwdriver
3/16 inch (5 rom) nut driver
9/32 inch (7 rom) nut driver
5/8 inch (16 rom) nut driver (HP 1660ES series only)
6-2