Programming instructions

80 Service

Any assembly or subassembly removed from the mainframe MUST be

handled in accordance with anti-static handing procedures.

The following guidelines are the minimum requirements for a static safe

service environment.

• The work bench should be equipped with a conductive table mat. The

mat should be grounded to earth ground through a 1 MΩ resistor. The

mat should be equipped with at least one swivel connected to the

swivel connector for connecting wrist straps.

• All service and handling personnel should wear a conductive wrist

strap in contact with bare skin. This strap should be connected to the

swivel connector on the conductive table mat through a 1 MΩ

resistor.

• All metal equipment at a work station must be grounded. This includes

soldering irons, solder suckers, shelving, and equipment stands.

• Only one common ground should be provided at a workstation.

• The workstation must be kept free of nonconductors. No common

plastics, polybags, cardboard, cigarette or candy wrappers should be

allowed. There should not be rugs or carpet on the floor, shelving, or

bench top.

• Only proper containers should be used for shipping, storing and

transporting assemblies.

Caution To prevent equipment circuit damage, always set the line power

switch to off before removing or replacing any assembly.

Caution Always use anti-static techniques when assemblies are

handled or serviced.

Agilent 3499A/B/C Problem Isolation

An Agilent 3499A/B/C Switch/Control System consists of three mainframes

and a set of plug-in modules. Once the Agilent 3499A/B/C is suspected of a

failure, a problem should be existing either in the mainframe or in the

plug-in modules or in both of them. More tests must be performed to isolate

the problem.

Preliminary Tests Once the Agilent 3499A/B/C is suspected of a failure:

1. Power off the Agilent 3499A/B/C and remove all the plug-in

modules;

2. Cycle power on the Agilent 3499A/B/C. If the same problem exists,