HP 1660 Series Service Manual page 179

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 CRT, and the CRT driver board. To avoid
W A R N I N G
electrical shock, disconnect the power from the instrument before performing the following
procedures. After disconnecting the power, wait at least three minutes for the capacitors on
the power supply board and the CRT driver board to discharge before servicing the
instrument.
Damage can occur to electronic components if you remove or replace assemblies when the
C A U T I O N
instrument is on or when the power cable is connected. Never attempt to remove or install
any assembly with the instrument on or with the power cable connected.
Repl acement St r at egy Repl acement St r at egy
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.
Electrostatic discharge can damage electronic components. Use grounded wriststraps and
C A U T I O N
mats when performing any service to this logic analyzer.
Tool s Requi r ed Tool s Requi r ed
#10 TORX screwdriver
#15 TORX screwdriver
#1 Posidrive screwdriver
3/16 inch ( 5 mm) nut driver
9/32 inch ( 7 mm) nut driver
5/8 inch ( 16 mm) nut driver ( HP 1660AS series only)
6–2