Teletype 38 Disassembly And Reassembly

TELETYPE CORPORATION
Skokie, Illinois, U.S.A.
SECTION 574-423-702TC
Issue 2, June 1973
38 ELECTRICAL SER VICE UNIT
DISASSEMBLY AND REASSEMBLY
1.
2.
CONTENTS
GENERAL ...... .
ELECTRICAL SER VICE
UNIT .......... .
READER POWER PACK
POWER SUPPLY AND
CIRCUIT BOARD
1. GENERAL
PAGE
1
1
1
1
1.01 This section provides disassembly and
reassembly instructions for the 38
electrical service unit (ESU). It is reissued
to
1
make some corrections in 2.03 and 2.04. Marginal
arrows indicate the corrections. These instruc-.J
tions are confined
to
major subassemblies only. If
further disassembly
ar.d
reassembly is required,
refer to Section 574-423~800TC.
1.02 To remove the ESU as a unit from the
teletypewriter set, refer
to
Section
574-400-702TC.
2. ELECTRICAL SERVICE UNIT
READER POWER PACK
2.01 Disassemble reader power pack (Figure
1) as follows:
2.02
(a) Disconnect Pl from reader power pack
circuit board.
(b) Remove two push-on leads from stud
mounted resistor.
( c) Remove two mounting screws from
plastic brackets.
(d) Remove reader power pack.
Reassemble reader power pack by
reversing procedure in 2.01.
POWER SUPPLY AND CIRCUIT BOARD
2.03 Disassemble power supply and circuit
board (Figure 1) as follows:
(a) Remove all connectors on circuit card.
j
(b) Loosen lower screws of supporting
brackets (Figure 2). Swing brackets
rearward.
NOTE: WESU 001 has 1 circuit card;
WESU 002 has 2 circuit cards.
( c) Remove circuit cards.
2.04 To reassemble, reverse procedure. Make
sure circuit card(s) are positioned prop-
erly, with their corners in the slots provided at
I
their mounting brackets.
..J
©
1972 by Teletype Corporation
All rights reserved
Printed in U.S.A.
Pagel