Home
Keithley
Measuring Instruments
236
Keithley 236 Service Manual
4
of 1
of 1 rating
138 pages
Give review
Manual
Specs
To Next Page
To Next Page
To Previous Page
To Previous Page
Loading...
SECTION
5
Replaceable
Parts
5.1
INTRODUCTION
This
section
contains
replacement
parts
information,
component
location
drawings
and
schematic
diagrams
for
the
Models
236
and
237.
5.2
PARTS
LISTS
Parts
are
listed
alphanumerically
in
order
of
their
circuit
designations.
The
first
parts
list
contains
information
for
the
display
board
of
both
the
Models
236
and
237.
The
next
parts
list
contains
information
for
the
digital
board
of
both
the
Models
236
and
237.
The
next
parts
list
con
tains
information
for
the
analog
board
ofboth
the
Modeis
236
and
237.
The
next
two
parts
lists
contain
information
for
the
output
modules
of
the
Models
236
and
237
respec
tively.
The
next
parts
list
contains
information
for
the
resonant
converter
of
the
Model
237.
The
last
parts
list
contains
information
on
miscellaneous
parts
that
do
not
pertain
to
any
of
the
pc
boards.
53
ORDERING
INFORMATION
To
place
an
order,
or
to
obtain
information
concerning
re
placement
parts,
contact
your
Keithley
representative
or
the
factory.
See
inside
front
cover
for
addresses.
When
or
dering,
include
the
following
information:
1
.
Instrument
Model
Number
2.
Instrument
Serial
Number
3*
Parts
Description
4.
Circuit
Designation
(if
applicable)
5.
Keithley
Part
Number
If
an
additional
service
manual
is
required,
order
part
number
236-902-00.
The
manual
package
will
contain
the
service
manual
and
any
applicable
addenda.
54
FACTORY
SERVICE
If
the
instrument
is
to
be
returned
to
the
factory
for
serv
ice,
please
complete
the
service
form
which
follows
this
section
and
return
it
with
the
instrument.
5.5
SCHEMATIC
DIAGRAMS
AND
COM
PONENT
LOCATION
DRAWINGS
Schematic
diagrams
and
component
location
drawings
follow
the
appropriate
replaceable
parts
list
for
that
par
ticular
board.
5-1
101
103
Table of Contents
Table of Contents
21
Performance Verification
27
Introduction
27
Environmental Conditions
27
Initial Cond1Tions
27
Required Test Equtpment
28
Verifications Procedures
28
Equipment Characterization
30
Table 1-3 Model 263 I-Source Characteristics
31
Common Mode Verification
32
Figure 1-2 Setup for Common Mode Verification
33
Voltage Source Verification
34
Figure 1-3 Setup for Voltage Source Ranges Verification
35
Voltage Measure Verification
35
Figure 1-4. Setupfor Voltagemeasure Ranges Verification
36
Table 1-5 Voltage Measure Verification
37
Remote Sense Verification
37
Figure 1-5 Setup for Remote Sense Verification
38
Low Current (Ina to Loma) Measure Ranges Verification
38
Low Current (Ina to Loma) Source Ranges Verification
43
Looma Measure Range Verification
44
Figure 1-8 Setup for Looma Measure Range Verification
45
Looma Source Range Verification
46
Calibration
49
Introduction
49
Recommended Calibration Equipment
49
Environmental Conditions
50
Warmup Period
50
Cal Lock
50
Calibration Procedures
50
Equipment Characterization
51
Figure 2-2 Setup for Equipment Characterization
52
Table 2-3 Model 263 I-Source Characterization
53
Voltage Calibration
54
Figure 2-3 Setup for Volts Calibration
55
Looma Range Calibration
57
Low Current Ranges Calibration (Ina Loma)
59
Calibration Errors
61
Table 2-4 Calibration Error Messages
62
Calibration Program
64
Table 3-1 Line Fuse Selection
73
Introduction
73
Line Fuse Replacement
73
Fan Filter Cleaning
73
Handling and Cleaning Precautions
76
Disassembly Instructions
76
Figure 3-3 Resonant Converter Board (Model 237)
77
Figure 3-4 Output Board
78
Figure 3-5 Analog Board (Shields Removed)
79
Diagnostics
82
Table 3-2 Recommended Troubleshooting Equipment
82
Special Handling of Static Sensitive Devices
82
Recommended Test Equipment
82
Power Supply Checks
84
Table 3-3 Power Supply Checks
84
Analog Switching
85
Table 3-4 Analog Switching; Current Ranging
85
Table 3-5 Analog Switching; Volts Ranging
86
Table 3-6 Analog Switching; Feedback
86
Digital and Display Checks
87
Table 3-9 Digital Circuitry Checks
88
Table 3-10 Display Circuitry Checks
89
Principles of Operation
90
Introduction
90
Analog Circuitry
91
V/I Control and Readback
91
Output Stage
93
Figure 4-3 Model 236 Output Stage (Simplified Schematic Diagram)
94
Feedback
95
Figure 4-6 Damping Relay Contact Bounce
96
Resonant Converter (Model 237)
97
A/D Converter
97
Table 4-1 Volts Range Relays
97
Digital Circuttry
98
I/O Controller
98
Source/Measure Controller
99
Communications
99
A Display Circuitry
99
Powersupply
100
Introduction
102
Parts Lists
102
Ordering Information
102
Schematic Diagrams and Component Location Drawings
102
Other manuals for Keithley 236
Applications Manual
201 pages
4
Based on 1 rating
Ask a question
Give review
Questions and Answers:
Need help?
Do you have a question about the Keithley 236 and is the answer not in the manual?
Ask a question
Keithley 236 Specifications
General
Brand
Keithley
Model
236
Category
Measuring Instruments
Language
English
Related product manuals
Keithley 237
138 pages
Keithley 2461
31 pages
Keithley 2430
141 pages
Keithley 2510
244 pages
Keithley 2601
114 pages
Keithley 2182
120 pages
Keithley 2635
114 pages
Keithley 2614B
18 pages
Keithley 2657A
805 pages
Keithley Series 2600
136 pages
Keithley 2600a series
696 pages
Keithley SourceMeter 2611
108 pages
To Next PageTo Next PageTo Previous PageTo Previous Page
Loading...
Need help?
General
