A4, A5, A6 Samplers And A7 Pulse Generator - Agilent Technologies 8753ES Option 011 Service Manual

Assembly Replacement and Post-Repair Procedures

A4, A5, A6 Samplers and A7 Pulse Generator

A4, A5, A6 Samplers and A7 Pulse Generator
Tools Required
• Needle-nose pliers
• T-10 TORX screwdriver
• 5/16-inch open-end torque wrench (set to 10 in-lb)
• ESD (electrostatic discharge) grounding wrist strap
Removal
1. Disconnect the power cord and remove the top cover (refer to
2. To remove the B sampler (A6), you must remove the source bracket (item 1).
3. Disconnect all cables from the top of the sampler (A4/A5/A6) or pulse generator (A7).
4. Remove the screws from the top of each sampler assembly. Extract the assembly from
the slot.
NOTE To remove the A (A5) or R (A4) sampler, first remove the cable on the B (A6)
sampler.
NOTE If you are removing the pulse generator (A7), the grounding clip, which rests
on top of the assembly, will become loose once the four screws are removed. Be
sure to replace the grounding clip when reinstalling the pulse generator
assembly.
Replacement
1. Check the connector pins on the motherboard before reinstallation.
2. Reverse the order of the removal procedure.
NOTE When reconnecting semirigid cables, it is recommended that the connections
be torqued to 10 in-lb.
Be sure to route W8 and W9 as shown. No excess wire should be hanging in
the A11 and A14 board slots. Routing the wires in this manner will reduce
noise and crosstalk.
14-22
"Covers" on page 14-6).
Chapter 14