A8 3.5" Internal Disk Drive Assembly Replacement; How To Remove The 3.5" Disk Drive Assembly; Attenuator Replacement; Am Delay Modulator Replacement - Agilent Technologies 8711C Service Manual

A8 3.5" Internal Disk Drive Assembly Replacement

he disk drive is a non-repairable unit and must be replaced if it fails. However, before
replacing the drive, try cleaning the drive with a suitable cleaning device, or by spraying it
with clean compressed air. Most \failed" drives are only in need of a cleaning.
If the drive must be replaced, you may need to recon gure the jumpers. For Epson disk drives
only, the jumpers should connect pins 1 and 3, and pins 2 and 4 (see Figure 3-7). Verify the
position of the two jumpers and correct them if necessary. For information on the jumper
con gurations of other disk drives, contact your nearest HP sales or service oce.
Insert artwork here.
Figure 3-7. A8 Disk Drive Jumper Con guration
How to emove the 3.5" Disk Drive Assembly
1. Disconnect the power cord.
2. Remove the front panel assembly (see \How to Remove the Front Panel Assembly").
3. Remove the CPU assembly (see \How to Remove the CPU Assembly").
4. Remove the four screws anchoring the disk drive to the CPU assembly.
5. Disconnect the ribbon cable and power cable.

Attenuator Replacement

See \A5 Receiver Assembly Replacement."

AM Delay Modulator Replacement

See \A5 Receiver Assembly Replacement."
3-14 Assembly Replacement