Maintenance; Introduction; Changing The Vector Output I/O Module Fuse - Fluke 9100 Series Service Manual

SERVICING DESCRIBED IN THIS SECTION IS TO BE PERFORMED
BY QUALIFIED SERVICE PERSONNEL ONLY. TO AVOID
ELECTRICAL SHOCK, DO NOT PERFORM ANY SERVICING UNLESS
YOU ARE QUALIFIED TO DO SO.

INTRODUCTION

This section describes maintenance procedures for the 9100A-017 Vector
Output I/O Module. Some of these procedures do not require access to the
instrument and can be performed by the operator. Troubleshooting
procedures, which are covered in detail in the 9100A Service Kit, may
require reference to the disassembly and reassembly instruction found in
this section.

CHANGING THE VECTOR OUTPUT I/O MODULE FUSE

An operator display message ("I/O module fuse blown") indicates that the
Vector Output I/O Module fuse has opened. This problem can occur when
the I/O Module COMMON lead is incorrectly connected to the UUT.
Prior to replacing the fuse, determine the incorrect COMMON lead
connection. Then disconnect all I/O Module leads and replace the fuse as
follows:
1. Locate the fuse holder on the back of the I/O Module, near the
cable.
2. Press the fuse holder cap in, then rotate it counterclockwise.
3. Pull the cap and fuse straight out. Separate the cap and fuse.
4. Replace with a 1A, 250V slow blow fuse.
Vector Output I/O Modules configured at the factory for use with 110V
line voltage mainframes use 1/4 x 1-1/4 inch fuses with grey fuse holder
caps. Instruments configured at the factory for 220V use 5 mm x 20 mm
fuses with black fuse holder caps. First, check the color of the fuse
cap (grey caps hold U.S. fuses; black caps hold metric fuses). Then
select the proper fuse part number.
WARNING
3-1
Section 3

Maintenance