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MODEL 615 ELECTROMETER
REPLACEABLE PARTS
SECTION
4.
REPLACEABLE
PARTS
4-1.
REPLACEABLE PARTS LIST.
This
section
contains
(Code Number),
Manufacturer
Part Number, and the
a list
of components
used in the Model 615 Digital
Keithley
Part Number.
Alsa
included
is a Figure
Ref-
Electrometer
for user reference.
The Replaceable
erence
Number where applicable.
The complete
name and
Parts
List
describes
the individual
parts
giving
Cir-
address
of the Manufacturers
is listed
in Table
24.
cuit
Designation,
Description,
Suggested
Manufacturer
(Refer
also
to Table
21 for
Abbreviations
and Symbols).
TABLE 21.
Abbreviations
and Svmbols
A
Cb"aC
CerD
Cer Trimmer
CO"lP
DCb
Desig.
EAl
ET8
ETT
ampere
Carbon Variable
Ceramic
Disc
Ceramic
Trimmer
Camposition
Deposited
Carbon
Designation
Electrolytic,
Aluminum
Electralytic,
tubular
Electrolytic,
tantalum
F
farad
Fig.
Figure
GCb
Glass enclased
Carbon
k
kilo
(103)
u
micro
(10-6)
M
Meg (106)
Mfg.
MU
MY
NO.
Manufacturer
Metal
Film
MYhC
Number
0.
P
PC
POly
Ref.
V
w
ww
W&V*=
OhIn
pico (to-121
Printed
Circuit
Polystyrene
Reference
Tinner
Capperweld
volt
watt
Wirewound
Wirewound Variable
4-2.
ELECTRICAL SCHEMATICS AND DUCRA"S.
Schematics
and diagrams
are included
to describe
the electrical
circuits
as described
in Section
3.
Refer
co Table
22
which
identifies
all
schematic
part
numbers included.
4-3.
WOW TO "SE THE REPLACEABLE PARTS LIST.
This
Parts
List
is arranged
such that
ehe individual
types
of components
are listed
in alphabetical
order.
The
perts
for
the instrument's
Main Chassis
are listed
fallowed
by printed
circuit
boards
and other
subassem-
blies.
Refer
to Table
23 for
listing
of circuit
des-
ignacion
series
assigned
to each major
sub-assembly.
4-4.
HOW TO ORDER PARTS.
a.
Replaceable
parts
may be ordered
through
the
Sales
Service
Department,
Keithley
Instruments,
Inc.
or your nearest
Keithley
representaeive.
b.
When ordering
parts,
include
the following
in-
formation.
1.
Instrument
Part Number
2.
Instrument
Serial
Number
3.
Part Description
4.
Schematic
Circuit
Designation
5.
Keiehley
Part
Number.
C.
All
parts
listed
are maintained
in Keiehley
Spare Parts
Stack.
Any part
not
listed
can be made
available
upan request.
Parts
identified
by the
Keithley
Manufacturing
Code Number 80164 should
be
ordered
directly
from Keithley
Instruments,
Inc.
Description
Electrometer
Board
Electrometer
Board
Circuit
Designation
Main Chassis,
112
Main Chassis.
#I
Schematic
Pert Number
24267E
24151E
I
Power Supply
Polarity
Board
O-1 Display/Overload
Board
Main Chassis;
83
240443
PC-207
234490
PC-241
24031D
I
Readout-Board
PC-229
234513
Oscillator
Saard
PC-217
23452D
Integraror
Board
PC-246
24042E
ouepu? Buffer
Bw.rd
PC-218
23457D
o"tp"t
Suffer
BOard
PC-209
23481E
0472R
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