Bell System KS-20571 Service Manual

BELL SYSTEM PRACTICES
AT
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TCo Standard
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SECTION 034-369-80 l
Issue 2, October 1976
RECORDER
KS-20571
PIECE-PART DATA AND REPLACEMENT PROCEDURES
1. GENERAL
1.01
This section covers information necessary
for ordering replacement parts used in the
maintenance of the KS-20571 Ll, •L2, and L3t
recorders. The section also covers approved
procedures for replacing these parts.
1.02
This section is reissued to add coverage for
the L2 and L3 recorders.
1.03
Piece parts, other than mounting hardware,
which can be replaced in the field are listed
in the index at the end of Part 2 or on Fig. 1
through 14. These parts are identified on illustrations
which appear in Part 2 and show the different
parts together with their piece-part numbers and
corresponding names. No text references are listed
in the index for replacement procedures that are
obvious and consist of a simple operation.
1.04
Part 3 covers the approved replacement
procedures for the piece parts designated in
Part 2. No attempt shall be made in the
field to replace parts not designated.
1.05
Associated References: The following
references are required for use with this
section.
SECTION
034-369-701
034-369-802
TITLE
Recorder, KS-20571, Requirements
and Adjusting Procedures
Rectifier, KS-20573, Piece-Part
Data and Replacement Procedures
1.06
The components of KS-20571 Ll0l hnd L103•
kits of spare parts and special tools are listed
in Table A. These kits are available but not
supplied with the KS-20571 recorder. One KS-20571
LlOl kit is recommended for each •office using
Ll or L2 recorder. The L103 kit is similarly
recommended for the L3 application [Programmed
Magnetic Tape System (PROMATS)] .•
2. PIECE-PART DATA
2.01
The illustrations to which references are
made in this part shows the various piece
parts of the recorder. The piece-part numbers of
the various parts are given with their names as
listed by the service centers and the manufacturer.
2.02
When ordering replacement parts, give both
the piece-part number and the name of the
part; for example, L-502619 Bearing Plate.
If the part is identified by other than a piece-part
number, state the name of the part and the name
of the manufacturer as follows:
LE-055E-12-MW Extension Spring
Lee Spring Company, Inc
Brooklyn, New York
Do not refer to this section number or to any
information shown in parentheses in the illustrations.
2.03
Information enclosed in parentheses is not
ordering information. This information may
be references to notes, information pertaining to
parts not considered replaceable, or part names in
general field use if the names differ from those
assigned to the manufacturer.
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Printed in U.S.A. Page 1