Table Of Contents - IBM 5256-1 Maintenance Information Manual

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . vi
GLOSSARY OF TERMS AND ABBREVIATIONS . . . . . . . . . xiii
LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
USING THE IBM 5256 MAINTENANCE INFORMATION
MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . xvii
Glossary of Terms and Abbreviations . . . .
Maintenance. . . . . . . . . . " ..
Wiring Diagram . . . . . . . .
Diagnostic Aids . . . . . . . .
Preventive Maintenance .. .
Tools and Test Equipment.
Theory . . . . . . . . . . .
Features . . . .
Appendix A .
Index . . . . . .
MAINTENANCE . . . . . . . . . . . . . . .
SEQUENCE-AFFECTED PROCEDURES.
LOCATIONS . . . . . . . . . . . " . . . . . .
100 Front and Right Side Locations . . . .
xvii
xvii
xvii
xvii
xvii
xvii
xvii
. . . . . . xviii
.. xviii
. . . . . . . . . . xviii
. . • . . . . . . . . 1-1
. . . 1-1
.1-2
.1-2
101 Front and Left Side Locations. . . . . . . . . . . . . . .. .1-3
102 Back Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
103 Printer Mechanism Bottom Locations (Print Mechanism
in Service Position) . . . . . . . . . . . . . . . . . . . .1-5
104 Printer Mechanism Base Locations. . . . . . . . . . . .1-6
105 Power Supply Board A 1 Locations and Jumpers. . . . . .1-7
106 Planar Board Bl Locations and Jumpers. . . . • . . . . .1-8
107 Power Adapter Board Cl Locations. . . . . .. 1-9
108 Cabling Locations and Station Protector . . . . . . . . . . . 1-10
Motor Cables (EC2 to TPBl and TPB2) .. 1-10
COVER . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
110 Printer Covers . . . . . . . . . . . . . . . . 1-12
Adjustment . . . . . . . . . . . . . . . . . . . . . . 1-12
Top Cover Removal and Replacement. . . . . . .1-12
Back Cover Removal and Replacement . . . . . . . . . . . . . 1-12
Front Cover Removal and Replacement . . . . . . . . . . . . 1-12
111 Control Panel and AC Cable Assembly . . . . . . . . . . . . 1-13
Control Panel Removal and Replacement . . . . . . . . . . . 1-13
AC Cable Assembly Removal and Replacement . . . . . . . . 1-13
SERVICE POSITIONS . . . . . . . . . . . . . . . . . . . . . . . . 1-14
115 Separating the Printer From the Power Supply Board A 1
For Service Positions. . . . . . . . . . . . . . . . . . . . 1-14
116 Moving the Power Supply for Printer Servicing . . . . . " .. 1-16
PART NUMBERS. . . . . . . . . . . . . . . . . . . . . . . 1-16
117 Boards, Card, I nterposers, and Jumpers. . . . 1-16
FORMS MOVING PARTS. . . . . . . . . .1-17
120 Platen and Paper Deflector . . . . . . . . . . . . . . . . . . . 1-17
Removal and Replacement . . . . . . . . . . . . . . . . . . . . 1-17
121 Platen Latches (Release Eccentrics and Springs) . . . . . . . 1-18
Adjustment . . . . . . . . . . " . . . . . . . . . . . . . 1-18
122 Platen Gears and Bushing. . . . . . . . . . . . 1-18
Removal, Replacement, and Adjustment. . . 1-18
123 Platen Pressure Rolls . . . . . . . . . . . . . .
Adjustment . . . . . . . . . .
124 Platen Gear Backlash (Play) . . . .
Adjustment . . . . . . . . . . . . . .
125 Forms Motor Gear Backlash (Play)
Adjustment . . . . . . . . . .
126 Forms Motor and Emitter .
Removal and Replacement ..
Disassembly . . . . . . . . . .
Assembly . . . . . . . . . . . .
127 Forms Feed Emitter Disk ..
Adjustment . . . . . . . . . .
128 Forms Motor to Emitter Timing ..
Service Check.
Adjustment . .
129 A-Frame . . .
Service Check.
Alignment . . .
130 End-of-Forms Switch ..
Service Check . . . . . . .
Adjustment . . . . . ' .. .
Removal and Replacement. . . .
131 Forms Tractor Unit . . . . .
Removal and Replacement . . . . . .
Disassembly and Assembly . . . . . .
Left Tractor Acljustment . . . . . . .
132 Forms Tractor Unit Chain Cover ..
Service Check . . . . . . . . . . . . . . .
viii
Contents
· . 1-19
· . . . 1-19
· . . . 1-20
· . . . 1-20
· . . . 1-21
· . . . 1-21
· . . . 1-23
· . 1-23
.1-24
· .1-24
· . . . 1-25
· . . . 1-25
· . 1-26
· . . . 1-26
· . 1-27
· . . . 1-29
· • . . . . . . 1-29
· . . . 1-29
· . . . . . . . 1-30
· . . . . . . . 1-30
· . . . . . . . 1-30
· . . . . . . . 1-30
. . . . . . 1-32
· . . . . . . . 1-32
· . . . 1-32
· . . . 1-33
· . . . 1-33
· . . . 1-33
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
133 Forms Tractor Unit Chain . . . . . . . . . . . . . . . . . . . 1-35
Removal and Replacement . . . . . . . . . . . . . . . . . . . . 1-35
134 Forms Guide Rack Static Eliminator Replacement. . . 1-35
PRINTER EMITTER. . . . . . . . . . . . . . . . . . . . . . . 1-36
140 Print Emitter Board to Pickup and Amplifier Card .
· .1-36
Service Check . . . . . . . . . . . . . . . . . . . . . . . · . 1-36
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . · . 1-36
Printer Emitter Pickup and Amplifier Removal and
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
141 Print Emitter Board. . . . . . . . . . . 1-38
Removal and Replacement. . . . . . . . 1-38
142 Print Emitter Hold Down Bracket. .. 1-38
Adjustment ..
143 Left Margin ..
Service Check.
Adjustment ..
CARRIER . . . . .
150 Carrier Main and Support Shafts ..
Service Check . . . . . . . . . . .
Adjustment . . . . . . . . . . . . . .
151 Carrier Support Shaft . . . . . . . .
Removal and Replacement. .
152 Carrier and Main Shaft . . .
Removal and Replacement ..
153 Belt Tensioner Assembly ..
Removal and Replacement .
154 Carrier Motor and Pulley ..
Removal and Replacement ..
· . 1-38
. 1-38
· .1-38
· . 1-38
.1-40
· .1-40
· .1-40
· .1-40
· . 1-41
· . 1-41
· . 1-41
· . 1-41
· . 1-42
· . . . 1-42
· . . . 1-43
· •.. 1-43
· .1-43 155 Carrier Leaf Spring and Bearing
Removal and Replacement . . . . . . . . . . . . . . . . . . . . 1-43