AT&T Plant Series Adjustment

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BELL SYSTEM PRACTICES
Plant Series
SECTION 592-811-700
Issue 1, April, 1968
AT&TCo Standard
"DATASPE_ED"* TAPE SENDER
WITH ERROR DETECTION AND CORRECTION
TYPE 4A
ADJUSTMENTS, LUBRICATION, AND DISASSEMBLY
CONTENTS
1.
GENERAL ........ .
PAGE
1
ADJUSTMENTS .............. . 1
LUBRICATION ........... , . . . .
2
DISASSEMBLY. . . . . . . . . . . . . . . .
2
2. ADJUSTMENTS ....... ; ... , .. -. 3
High Speed Error Detection and
Correction Transmitter Control
Module .•..•................
Gated oscillator (ZA420) ........ .
dated oscillator (ZA423) ..... , .. .
High Speed Reader (DX Type) ..... .
Sender Cabinet , . . . . . . . . . . . . . .
Data set rack support . . . . . . .- . . . .
Filler panels . . . . . . . . ........ .
Front door ................. .
Tape transport panel. . . . . . . . . . . .
Tape Transport and High Speed
Reader Assembly. . . . . . . . . . . . . .
Back-up solenoid ............. .
Belt tension. . · . . . . . . . . . . . . . . . .
Control arm spring ............ .
Forward tape puller shaft . . . . . . ..
High speed reader feed alignment . . .
Motor bracket . . . . . . . . . . . . . . . .
Positive-drive belts ........... .
Pulley alignment ............. .
Reader cover. . . . . . . . . . . . . . . . .
Reader front and rear positioning . . .
Reader left and right positioning . . . .
Reader vertical positioning . . . . . . .
Reader yield arm positioning . . . . . .
Reversing tape puller shaft . . . . . ..
Tape retainers .............. .
* Trademark of AT&TCo
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CONTENTS
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V - belt clutch . . . . . . . . . . . . . . . . .
Winder shaft .................
Winder shaft and front panel
alignment ......... _ ..........
Transmitter Distributor Module . . . .
3. LUBRICATION
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Sender cabinet
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Tape transport assembly . . . . . . . . .
4. DISASSEMBLY AND REASSEMBLY ..
TAPE TRANSPORT AND HIGH
SPEED READER ASSEMBLY ..... .
A. Tape Reader Removal . . ..... .
B. Tape Reader Replacement . . . . .
C. Tape Reader Disassembly
and Reassembly . . . . . . ..... .
MODULES AND CABINET.
1.
GENERAL
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1.01 This section provides adjustments, lubri-
cation, and disassembly information for
Tape Sender 4A.
1.02 Refer to the appropriate adjustment,
lubrication and disassembly sections for
information on the reader unit (DX type).
ADJUSTMENTS
1.03 The adjustment procedures are arranged
in a sequence that would be followed if a
complete readjustment of the equipment were
Prepared for American Telephone and Telegraph Company by Teletype Corporation
©
1967 by Teletype Corporation
All rights reserved
Printed in U.S. A. Page 1