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INSTRUCTION MANUAL
Digital Multimeter
Models172A.1730,
REPLACEABLE
PARTS
the
parts
which
relate
to a tabular
listing
contained
on the
face
of
the
diagrams,
or
in
-
some cases
the
listing
is on a second
sheet.
The
tabular
listing
provides
a cross-
reference
to
the
schematic
circuit
designation
and
includes
the
Keithley
part
number
for
convenience.
Model
172A/l73A
~~-446,
Component
Layout
No. 28795D
(Sheet
I and 2,
Page 7-32
ani'
7-33).
b.
Display
Board
PC-403,
Component
Layout
No. 27879C
(Page
7-34).
C.
Current
Board
(173A
only)
~~-406
Component
Layout
No. 27884C
(Page
7-35).
d.
Model
1728 Battery
Pack,
Component
Layout,
Figure
7-2
(Page
7-36).
e.
Model
I722
PC-415,
Component
Layout,
Figure
7-3
(Page
7-39).
f.
Model
I722
~~-416,
Component
Layout,
Figure
7-4
(Page
7-39).
-
TOP COVER
28969C
I
REAR
REAR ; PANEL
LABE ,L MC-235-
SPACER
257628
6-32
X l-11
SCREW (4)
INSERT
26090A
BOTTOM
'4"
28968B
INSTRUCTIONS
NOTE:
MINUS SIGN LABEL
~~-231
(NOT ILLUSTRATED)
I
HANDLE
2572VD
FIGURE 7-l.
Top and Bottom
Cover
Assembly.
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