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5-4
Disassembly
Case cover removal
WARNING
Before removing the case cover, disconnect the line cord and any test
leads from the instrument.
Follow the steps below to remove the case cover to gain access to internal parts.
1.
Remove handle
— The handle serves as an adjustable tilt-bail. Adjust its position
by gently pulling it away from the sides of the instrument case and swinging it up
or down. To remove the handle, swing the handle below the bottom surface of the
case and back until the orientation arrows on the handles line up with the orienta-
tion arrows on the mounting ears. With the arrows lined up, pull the ends of the
handle away from the case.
2.
Remove mounting ears
— Remove the screw that secures each mounting ear. Pull
down and out on each mounting ear.
NOTE
When reinstalling the mounting ears, make sure to mount the right ear to the
right side of the chassis, and the left ear to the left side of the chassis. Each ear
is marked RIGHT or LEFT on its inside surface.
3.
Remove rear bezel
— To remove the rear bezel, loosen the two screws that secure
the rear bezel to the chassis, then pull the bezel away from the case.
4.
Remove bottom screws
— Remove the four screws that secure the case to the
chassis. They are located on the bottom of the case.
5.
Remove chassis
— To remove the case, grasp the front bezel of the instrument,
and carefully slide the chassis forward. Slide the chassis out of the metal case.
Input board removal
Perform the following steps to remove the two input boards. This procedure assumes that
the case cover is already removed.
1.
Remove the INPUT jack nuts.
Each INPUT jack has a nut that secures the jack to the rear panel. Remove these
two nuts and lock washers.
2.
Remove input board bracket mounting screws.
Remove the two mounting screws that secure the input board support bracket to the
chassis.
Summary of Contents for 2500
Page 2: ...Contains Calibrating and Servicing Information Model 2500 Dual Photodiode Meter Service Manual...
Page 11: ......
Page 13: ......
Page 15: ......
Page 16: ...1 PerformanceVerification...
Page 28: ...2 Calibration...
Page 56: ...3 RoutineMaintenance...
Page 59: ...3 4 Routine Maintenance Model 2500 Service Manual...
Page 60: ...4 Troubleshooting...
Page 74: ...5 Disassembly...
Page 81: ...5 8 Disassembly Model 2500 Service Manual...
Page 82: ...6 ReplaceableParts...
Page 93: ...6 12 Replaceable Parts Model 2500 Service Manual...
Page 94: ...A Specifications...
Page 98: ...B CalibrationReference...
Page 108: ...C CalibrationProgram...
Page 117: ......
Page 119: ......
Page 120: ......
Page 121: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...