A19 Power Supply; Tools Required; Removal Procedure; Replacement Procedure - Agilent Technologies PSG Series Service Manual

Assembly Replacement

A19 Power Supply

A19 Power Supply

Tools Required

• T-10 driver
• needle-nose pliers

Removal Procedure

Refer to Figure 2-18 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to
"Inner Instrument Cover" on page
3. Position the signal generator with the A31 Motherboard facing you.
4. Using the needle-nose pliers, disconnect the W16 flexible cable (refer to
Pulse/Analog Modulation Generator J204.
5. Disconnect the W20 ribbon cable from the A20 SMI.
6. Using the T-10 driver, remove the two screws (1) that secure the A19 Power Supply to the struts located on the bottom.
7. Using the T-10 driver, remove the two additional screws (2) that are attached to the bottom frame.
8. Position the signal generator with the A31 Motherboard flat on the work surface and the rear panel facing you.
9. Remove the W18 ribbon cable from the A18 CPU J1.
10. Using the T-10 driver, remove the two screws (3) that secure the A19 Power Supply to the struts located on the top and an
additional screw (4) located on the top frame.
11. If you have Option UNJ refer to
assembly before continuing to the next step.
12. Using the needle-nose pliers, disconnect A22W1 from the power supply.
13. Pull the power supply out of the chassis while guiding the A22 Line Module cable through the opening of the power
supply.
14. Remove the power supply from the signal generator's chassis.

Replacement Procedure

• Reverse the order of the removal procedure.
• Torque all T-10 screws to 9 in-lbs.
• Perform the post-repair adjustments and performance tests that pertain to this removal procedure.
2-38
"Outer Instrument Cover" on page 2-4
2-6.
"A32 10 MHz Crystal Oscillator (Option UNJ)" on page
and
Figure 2-15 on page 2-33) from the A11
2-72. You must remove this