3741_Maintenance_Library_May75.pdf part of IBM 3741 Maintenance Library May75 3741_Maintenance_Library_May75.pdf, IBM floppy 3741_Maintenance_Library

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=E Station
Theory-Maintenance

EC 823146 825853 825979 825958 826065
PN 1607500 3741 ML 0-1
10/30/74 11/15/74 12/20/74 3/21/75 5/16/75
EC 825853 825958 826065
PN 1607501
Date 9/15174 3/21/75 8/1/75 0-2

PREFACE

This is the only manual you need to maintain the
IBM 3741 Data Station. The manual contains
Display Viewer
theory, operation procedures, MAPs, and remove-
replace-and-adjust procedures. It also contains part
numbers for the field replaceable units (FRUs).
All the information is in an easy-to-use graphic
format. Keyboard

The starting point for each call is on page 1-1.
Page 1-1 directs you to the Symptom Index. The
Symptom Index in turn, based on the symptom,
directs you to a MAP section. If the MAP does not
lead you to the cause of the trouble, go back to
the Symptom Index to look for another MAP, or
use the Basic Machine Checkout Procedure, MAP
7-1. If the symptom changes during machine warm-
up, use the last symptom to start the call. If there
are no specific symptoms to guide you, use MAP
7-1.

Each MAP section contains step-by-step proce-
dures to locate the failing part, and the remove-
replace-and-adjust procedures to correct machine
error.
iBM 3741 Data Station
Check the manual to see how it is organized and
the information it contains.

CLEANING

CAUTION
Do not use sprays on the keys or near the key-
board. Do not use IBM cleaning fluid (methyl
chloroform) or isopropyl alcohol for cleaning.

Use a cloth dampened with mild soap water on
covers, CRT face, CRT filter, CRT mirror, and
keyboard.

Sixth Edition (August 1975)

Changes are continually made to the specifications herein.
This manual is under EC control and will be updated with
each Engineering Change applied to the machine this
manual accompanies.

Do not use this manual to service other machines as
they can have features not included in this manual, or
they can be at a different EC level.