To Remove The Module - HP 16555A Service Manual

Replacing Assemblies
This chapter contains the instructions for removing and replacing the logic analyzer
module, the circuit board of the module, and the probe cables of the module. Also in
this chapter are instructions for returning assemblies.
Turn off the instrument before installing, removing, or replacing a module in the instrument.
C A U T I O N
Tools Required
A T10 TORX screwdriver is required to remove screws connecting the probe cables
and screws connecting the back panel.

To remove the module

Electrostatic discharge can damage electronic components. Use grounded wriststraps and
C A U T I O N
mats when performing any service to this module.
Turn off the instrument power switch, then unplug the power cord. Disconnect any
1
input or output connections.
Loosen the thumb screws.
2
Starting from the top, loosen the thumb screws on the filler panels and cards located above
the module and the thumb screws of the module.
Starting from the top, pull the cards and filler panels located above the module
3
half-way out.
If the module consists of a single card, pull the card completely out.
4
If the module consists of multiple cards, pull all cards completely out.
Push all other cards into the card cage, but not completely in.
5
This is to get them out of the way for removing and replacing the module.
If the module consist of a single card, replace the faulty card.
6
If the module consists of multiple cards, remove the cables from J9 and J10 of all
cards. Remove the 2x10 cables from J5 and J7 from the master card. Remove the
faulty card from the module.
6–2