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SECTION 5.
SERVICING
5-1. GENERAL. Section 5 contains the maintenance and
troubleshooting procedures for the Model 610C Elec
trometer. Follow these procedures as closely as pos
sible to maintain the performance of the instrument.
5-2.
SERVICING SCHEDULE. The Model 610C requires no
periodic maintenance beyond the normal care required
of high-quality electronic equipment.
The value of
the high-megohm resistors, RItO, RIll and RIt2, should
be checked approximately every 2 or 3 years for speci
fied accuracy.
5- 3.
PARTS REPLACEMENT.
a. The Replaceable parts List in Section 7 des
cribes the electrical components of the Electrometer.
Replace components only as necessary. Use only reli
able replacements which meet the specifications.
b. The MOS FET input transistors, QIOI and QI02,
are specially selected and matched; order only as a
plug-in unit, part number 23733A from Keithley Instru
ments, Inc. They can be checked only by replacement.
TABLE 6.
Type
Digital Voltmeter
AC VTVM
RMS Voltmeter
Microvolt-Ammeter
Voltage Supply
Nanovolt Source
Picoampere Source
Recorder
Megohm Bridge
Resistance Standards
Differential Voltmeter
Oscilloscope
Function Generator
Test Equipment.
Description
l�V to 1000V
lOiJ,V to 1000V, 10-1 to lO-llA
O-IOOOV
10-IOv to 1.llV
lO-14A to 1.1 x lO-4A
lmA type
105 to 1015 n
lOB to 1013n
10IJ.V to 500V
Mfr.
Model No.
Keithley
160 or 163
Hewlett-Packard
400
"
"
3400A
Keithley
153
"
241
"
260
261
"
370
515A
5155
"
662
Tektronix
56lA
Wavetek
102
15
13
Summary of Contents for 610C
Page 24: ...FIGURE 14 Chassis Side View 18 16...
Page 25: ...FIGURE 15 Circuit Board pelS3 19 17...
Page 26: ...FIGURE 16 Printed Circuit Board PC 186 20 18...
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Page 41: ..._ v 3 FIGURE 21 Chassis Assembly 0 1r 11 35 33...
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