Maintenance; Introduction - Keithley 4200A-SCS Reference Manual

In this section:

Introduction ............................................................................ 12-1

Line fuses ............................................................................... 12-1
Front-panel display ................................................................. 12-2
Air intake ventilation screens .................................................. 12-2
Solid-state hard drive maintenance ........................................ 12-3
Repacking for shipment ......................................................... 12-3
Updates to the operating system software ............................. 12-3
Firmware upgrade .................................................................. 12-4
Accessing the release notes .................................................. 12-4
Reset the hardware ................................................................ 12-4
Lithium battery ........................................................................ 12-4
Calibrate the system .............................................................. 12-5
Fan operation ......................................................................... 12-7
Making stable measurements with SMUs .............................. 12-8
Low-current measurements.................................................. 12-11
Interference .......................................................................... 12-17
Introduction
The information in this section describes routine maintenance of the instrument that the operator can
perform. It also contains information on how to optimize your measurements.
Line fuses
Rear-panel fuses protect the power line input of the unit.
Turn off the power and disconnect the line cord before replacing the fuses. Failure to turn
off the power and disconnect the line cord before replacing the fuses may result in personal
injury or death due to electric shock.
To replace the line fuses:
1. Locate the fuses. The fuses are in two fuse holders above the AC receptacle.
2. Use a small slotted screwdriver to remove each fuse holder.
3. Push the fuses in and rotate them counterclockwise to remove the fuses from the fuse holders.
4. Replace the fuses with the correct type according to your line voltage:
•
100 - 125 VAC: 250 V, 15 A, 5 x 20 mm, slow-blow
•
220 - 240 VAC: 250 V, 8 A, 5 x 20 mm, slow-blow
For continued protection against fire or instrument damage, replace the fuses only with the type and
rating shown above. If the instrument repeatedly blows fuses, correct the cause of the problem
before replacing the fuses.
Section 12

Maintenance