Specifications

Agilent 4155B/4156B Quick Start Guide, Edition 2 1-5
Overview
If You Have a Problem
If You Have a Problem
This section describes how to solve the following unexpected problems:
• If the 4155B/4156B cannot be powered on
• If display screen does not appear after applying power
• If the 16442A test fixture is not stable
If the 4155B/4156B cannot be powered on
• Check that the power cable is firmly connected to the 4155B/4156B and to
power outlet.
• Check that the front-panel LINE switch is on.
• Check that the voltage selector switch is set properly.
The voltage selector switch is located in the lower-right corner of the rear panel.
The following table shows the line voltage selector setting.
• Check that the fuse is good.
The fuse holders located in the lower-right corner of the rear panel.
1. Turn the 4155B/4156B off and disconnect the power cable from the power
outlet.
2. Unscrew the fuse holder on the rear panel.
3. Inspect that the correct fuse is installed, and wire inside the fuse is not
broken by using a rester.
4. Replace the fuse, if necessary. Then, screw in the fuse holder.
5. Turn the 4155B/4156B on.
Line Voltage Position
84 to 124 Vac left
200 to 248 Vac right
Line Fuse Type Agilent Part Number
110/120 Vac Time-delay type 8A, 250 Vac 2110-0383
220/240 Vac Time-delay type 4A, 250 Vac 2110-0014