Maintenance; Line Fuse Replacement - Keithley 2657A Reference Manual

In this appendix:
Introduction
The information in this section describes routine maintenance of the Keithley Instruments Model
2657A High Power System SourceMeter

Line fuse replacement

A fuse located on the Model 2657A rear panel protects the power line input of the High Power System
SourceMeter
Disconnect the line cord at the rear panel and remove all test leads connected to the instrument
before replacing the line fuse. Failure to do so could expose the operator to hazardous voltages that
could result in personal injury or death.
Introduction ............................................................................... A-1
Line fuse replacement .............................................................. A-1
Front panel tests ....................................................................... A-2
Upgrading the firmware ............................................................ A-4
®
instrument.
LINE FUSE
SLOWBLOW
5.0 A, 250 V
LINE RATING
100-240 VAC
50, 60 Hz
350 VA MAX.
!
LAN
IEEE-488
®
instrument that can be performed by the operator.
WARNING
Figure 123: Fuse replacement
DIGITAL I/O RS-232
!
NO INTERNAL OPERATOR SERVICEABLE PARTS,
WARNING: SERVICE BY QUALIFIED PERSONNEL ONLY.
REPLACE FUSE WITH SAME TYPE AND RATING.
2
1
Appendix A

Maintenance

LO SENSE 3030 VDC GUARD SENSE
LO LO MAX. HI HI
250 V
MAX.
!
INPUT/OUTPUT CURRENT: 120 mA MAX.