GENERAL. ELECTRIC

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SERVICE

MANUAL

GENERAL. ELECTRIC

GEH 2185

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The information contained herein does not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation, or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser's pur- poses, the matter should be referred to Genera! Electric Company, USA.

TermiNet is a trademark of General Electric Company, USA

©Copyright General Electric Company, USA 1973

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t

^DATA

e

COMMUNiCATiON PRODUCTS

TermiNet 300 Printer

Service Manual - GEH-21858

Printed October, 1973 (2500)

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GEH-2185

PREFACE

This manual provides basic service information for the "C" Model TermiNet 300 Printer. For convenience, reference to the TermiNet 300 Printer, in most cases, is "Printer".

All information contained in Addendum lA to GEH-2185A is superseded by this manual.

Preface

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GEH-2185

CHAPTER 1 CHAPTER 2 CHAPTER 3 Section 1 Section 2 Section 3 Section 4 Section 5 CHAPTER 4

Section 1 Section 2 Section 3 CHAPTER 5

Section 1 Section 2

LIST OF ILLUSTRATIONS

1-lA 1-lB 1-2 1-3 1-4 2-1 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16 3-17 3-18 3-19 3-20 3-21 3-22 3-23 3-24 3-25 3-26 3-27 3-28 3-29 3-30 3-31 3-32 3-33 3-34 3-35 3-36 3-37

vi

TermiNet KSR 300 Printer TermiNet RO 300 Printer Electronic Logic Module (Bustle) ASCII Code Chart ... . Model Number Code Chart

Shipping Screw Locations KSR Keyboard and Control

Panel ... . RO Control Panel ... . Right Rear View of Printer

Left Rear View of Printer Switch Locations and

Manual Controls ... . Fitting Paper over Tractor Pins ..

Paper Installation ... . Ribbon Installation ... . Loosening Cap ... . Removing Cap . · · • · · · Using Lamp Puller ...•...

Removing Lamp ... . Installing Lamp ... . Replacing Cap ... . Encoding Block ... . Current Loop Interface System .. . External Paper Handler Using

Forms Tractor ... . External Paper Handler Using

Wide Roll Paper Holder

Outline of Numeric Cluster Option.

Programmable Disc and Disc Punch ... . Programmable Disc on Disc Punch.

Programmed Disc Mounting

"U" Core Mechanics ... . Functional Block Diagram of the

Keyboard ... . Hammer and Print Belt Assembly . Hammer Actuation Mechanics Ribbon Spool Drive System

(Right Side View) ... . Drive Mechanism ... . Anti-Curl Device ... . Line Feed Mechanics ... . Functional Block Diagram of

KSR TermiNet 300 Printer Functional Block Diagram of SR TermiNet 300 Printer Functional Block Diagram of

RO TermiNet 300 Printer

Power Supply ... . Functional Block Diagram of

CLCC, SLC, ANSC, R&PC, and PSCC ... . Functional Block Diagram of

DATC, SPCC, PARC, and VTFC.

Functional Block Diagram of MEMC, DECC, HTBC, and LDIC ... .

1-2 1-2 1-3 1-4 1-5 2-1 3-3 3-3 3-5 3-5 3-6 3-8 3-8 3-9 3-9 3-9 3-10 3-10 3-10 3-10 3-12 3-13 3-14 3-14 3-16 3-19 3-19 3-19 3-20 3-21 3-22 3-23 3-24 3-24 3-25 3-25 3-29 3-30 3-31 3-32 3-33 3-34

3-36

3-38 3-39 3-40 3-41 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-10 5-11 5-12 5-13 5-14 5-15 5-16 5-17 5-18 5-19 5-20 5-21 5-22 5-23 5-24 5-25 5-26 5-27 5-28 5-29 5-30 5-31 5-32

Functional Block Diagram of

HDC and T&AC ... . Functional Block Diagram of

LMPC, PC, and PCAC ... . Functional Block Diagram of

PROC, TXPC, and POWC Functional Block Diagram of

RDRB and PCHB ... . Protection Circuits ... . Motor and Line Feed Circuits Data Signals ... . High Voltage Circuits ... . Odd-Even Pulse Circuit ... . Auxiliary Lamps and Switches .... . Speaker Circuit ... . Ribbon Lift ... . Option Boards ... . Cleaning Type Fingers . · · . · · · .. . Lubrication Points - Ribbon

Reversing Mechanisms Lubrication Points - Printer

Left Side

Lubrication Points - Clutch and Jackshaft ... . Lubrication Points - Printer

Interior ... . Keyboard Mounting ... . Keyboard Hardware ... . Sense Line Combined Board

Mounting ... .

"I" Core Clip ... . TXPC Cover Mounting ... . TXP Board Mounting ... . Internal Printer Components

Right Side ... . External Right Side View of

Printer ... . Ribbon Lift Solenoid ... . Ribbon Reversing Mechanism

Hardware ... . Left Drive Belts and Pulleys

Right Drive Belt Adjustment

Paper Shield Spring Clip ... . Print Finger Removal ... . Line Feed Solenoid Adjustment Jackshaft Adjustment ... . Bearing Puller ... . Paper Pressure Adjustment

Torque Shaft Adjustment ... . Paper Roll Holder ... . Rear Belt Guide Adjustment ... . Checking Alignment Between the

Pulley and Front Belt Guide Front Belt Guide Adjustment Power Transformer Mounting

HDC Board ... . Control Panel Mounting ... . Hammer Bank Removal ... .

3-37 3-38 3-39 3-39 4-9 4-9 4-10 4-11 4-11 4-12 4-13 4-13 4-14 5-2 5-3 5-4 5-4 5-5 5-8 5-9 5-9 5-10 5-10 5-11 5-12 5-13 5-13 5-14 5-15 5-16 5-16 5-17 5-17 5-18 5-19 5-20 5-20 5-20 5-21 5-22 5-23 5-24 5-24 5-25 5-26

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GEH-2185 List of Illustrations

List of Illustrations (continued)

Figure Title Page Figure Title Page

5-33 Hammer Bank Alignment Bar 5-26 5-39 T&AC Board Adjustments 5-30 5-34 Clevis Disconnect

...

5-27 5-40 Anti-Snag Assembly

.

... 5-30 5-35 Clevis and Plunger Removal 5-27 5-41 Wide Roll Paper Handler

...

^5-30

5-36 Preliminary Photocell Ad- 5-42 External Paper Handling System

..

^5-31

justment

...

^". ^5-28 ^5-43 VTFF Adjustment Range "A"

5-37 Final Photocell Adjustment 5-29 on Disk

...

^5-31

5-38 PROC Board Adjustments

...

^5-29 ^5-44 VTFF Adjustment Mechanics 5-32

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List of Tables GEH-2185

LIST OF TABLES

Table Title Page Table Title Page

3-1 Switches and Indicators - 4-4 TermiNet 300 Printer Printed KSR Printer

...

^3-1 Circuit Board (PCB) Jumpers

3-2 Switches and Indicators - (BUSTLE)

...

4-37

RO Printer

...

^3-4

3-3 Connector Cross Reference

...

3-28 4-4 TermiNet 300 Printer Printed 4-1 Trouble shooting Guide

...

^4-1 Circuit Board (PCB) Jumpers

4-2a Special Tools and Equipment 4-15 (NON -BUSTLE)

...

4-53 4-2b Suggested Standard Tools 4-16

4-3 TermiNet 300 Printer Circuit 4-5 Fuse Chart

...

4-54 Board (PCB) Descriptions 5-1 Lubrication Points

...

5-2 (BUSTLE)

...

4-18 5-2 Mechanical Adjustments with

4-3 TermiNet 300 Printer Circuit Hammer Bank Installed in

Board (PCB) Discriptions Frame

...

5-5

(NON-BUSTLE)

...

^4-31 ^5-3 Electrical Adjustments 5-7

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GEH-2185

INDEX Adjustment Checks . . . 5-5

Adjustments Table, Electrical . . . 5-7 Adjustments Table, Mechanical . . . 5-5 Adjustments,

Anti-Snag Device .... ·... 5-7, 5-30 Backstop Bar . . . • . . . • 5-23 Drive Belts . . . 5-6, 5-15 External Paper Handling System . . . 5-30 Front Belt Guide . . . 5-6, 5-22 Hammerbank . . . • . . . 5-6, 5-25 Jackshaft . . . 5-6, 5-18 Left Drive Belt . . . 5-6, 5-15 Line Feed Solenoid ... 5-6, 5-17 Paper Pressure • . . . • . . . 5-7, 5-19 Paper Skew . . . 5-7, 5-20 Photocell . . . • . . . • 5-7, 5-28 PROC Board . . . 5-7, 5-29 Rear Belt Guide . . . 5-6, 5-21 Rebound Bar . . . 5-7, 5-22 Ribbon (One Color) . . . 5-5, 5-6, 5-13 Ribbon (Two Color) . . . • . . . 5-5, 5-6, 5-31 Ribbon Height (Two Color) . . . • . 5-31 Ribbon Lift Lever and Lift Arm ... 5-6, 5-14 Ribbon Lift Shaft ... 5-6, 5-14 Ribbon Lift Solenoid with

One Color Ribbon ...•... 5-5, 5-12 Ribbon Lift Solenoid with

Two Color Ribbon ... 5-5, 5-31 Ribbon Reversing Shaft ... 5-6, 5-13 Right Drive Belt ...• 5-6, 5-15 T&A Board ... 5-7, 5-29 Vertical Tab and Form Feed ...•... 5-31 Vertical Tab and Form Feed

Drive Belt ... 5-6, 5-31 Alignment Bar, Hammer Bank ... 5-33 ANSC Board, Functional Description of ....• 3-34 Answerback . . . • . . . • . . . 3-11, 3-34 Answerback Option ... 3-11 Anti-Snag Device Adjustment ... 5-30 ASCII Code Chart . . . 1-3 Audible Indicators •...•... 3-6 Automatic Motor Control Option . . . 3 -11 Automatic Return Option . . . 3 -11 Auxiliary Functions ... 3 -27 Auxiliary Lamps and Switches . . . 4-12 Backspace Key ... 3 -6 Backstop Bar (Adjustment) ... 5-23 Belt, Print (Sticking) ... 4-15 Boards, Option ... 4-12 Boards, Printed Circuit . . . 4-17 Built-In-Modem Option ... 3-11 Bustle Frame (Replacement) . . . • . . . . 5-11 Bustle Printed Circuit Boards

(Replacement) ... 5-11 Cable, Data Set ... 1-5 Cable, Power . . . • . . . 1-3 Characters, Printable . . . 1-4 Character, Printout Process ... 3 -26

Character Spacing ... . Checkout Procedure ... . Check Out of RO /SR Printers ... . Circuits, High Voltage ... . Circuit, Speaker ... . Circuits, Linefeed ... . Circuits, Motor ... . Circuits, Motor and Linefeed ... . Circuits, Odd-Even Pulse ... . Circuits, Protection •...•...

CLCC Board, Functional Description of ....

Cleaning and Lubrication

(Maintenance) ... . Clear Horizontal Tab ...•...

Clevis and Plunger (Replacement) ... . Clock, Logic ... . Column, Printout Process ... . Connector Cross Reference ... . Control Code Keys ... . Control Panel (Replacement) ... . Copy ... . Cross Reference, Connector ... . Current Interface, Data Line

Specifications ... . Current Interface, Description of ... . Current Interface Installation ... . Current Interface, Jumper Options ... . Current Interface, Operation of ... . Current Interface Option ... . Data Received and Transmitted ... . Data Set Board, Entry Process ...•...

Data Set Cable ....•...

Data Set Interface ... . Data Signals ... . Data Transmission, Type of ... . DATC Board, Functional

Description of ... . DECC Board, Functional

Description of ... . Diode Matrix, Selective Addressing

and Polling Option ... . Drive Belts, Replacement and

Adjustment ...•...

Drive, Main ... . Electrical Adjustments ... . Electrical Adjustments Table ... . Electrical Functional TrOu.bleshooting .... . Electronic Logic Module ... . Entry Process ... . Environment ... . Escape Code Keys ... . External Paper Handler ... . External Paper Supply ...•...

Ferrite Cores (Replacement) ... . Finger Position, Printout Process ... . Fluorescent Copy Lamp Replacement Form Feed Key ... .

Index

1-4 2-2 2-5 4-10 4-12 4-8 4-8 4-8 4-10 4-8 3-33 5-1 3-7 5-25 3-27 3-26 3-28 3-7 5-24 1-3 3-28 3-13 3-11 3-13 3-13 3-11 3-11 1-4 3-26 1-5 1-5 4-8 1-5 3-35 3-36 3-18 5-15 3-23 5-29 5-7 4-8 1-3 3-26 1-3 3-7 3-13 3-7 5-8 3-26 5-25 3-6

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Index GEH-2185

INDEX (Continued) Front Belt Guide (Replacement) . . . 5-21

Front Belt Guide Adjustment ... 5-22 Functional Description of Printed

Circuit Boards ... 3-28 Functional Electronic Description

of the Printer . . . 3 -26 Functional Troubleshooting ... 4-8 Functional Troubleshooting, Electrical ... 4-8 Functional Traoubleshooting,

Mechanical ... 4-14 Fuse, Input Power (Fuse Chart) ... 4-54 Fuses, (Fuse Chart) . . . 4-54 General Description of the Printer . . . 1-1 General Operating Instructions

and Information . . . 3 -1 Guide, Troubleshooting . . . 4-1 to 4-7 Hammer Bank (Adjustment) ... 5-25 Hammer Bank Alignment Bar ... 5-33 Hammer Bank Print Belt

Assembly, Replacement ... 5-25 Hammer Decoder Board (HDC)

(Replacement) . . . 5-24 Hammer Driver, Printout Process . . . 3 -27 Hammer and Print Belt Assembly,

Operation of ... 3-21 HDC Board, Functional Description of 3 -36 High Voltage Circuits ... 4-10 Horizontal Tab Clear ... 3-7 Horizontal Tab Key . . . 3 -6 Horizontal Tab Set . . . 3 -7 Horizontal Tabulation Option . . . 3 -15 HTBC Board, Functional Description of . . . 3 -36

"I'' Core and Clips (Replacement) . . . 5-8 Indicators, Audible . . . 3 -6 Indicators, Switches and ... 3-1 Input Power . . . 1-3 Inspection and Installation . . . 2-2 Inspection Visual (Maintenance) . . . . • . . . 5-1 Installation, Current Interface . . . 3 -13 Installation, Inspection and . . . 2-2 Installation, Paper . . . 3 -7 Installation, Parts - See Parts

Replacement ... 5-8 Installation, Ribbon . . . 3 -8 Installation, Unpacking and . . . 2-1 Interface, Data Set . . . 1-5 Internal Paper Supply . . . 3 -7 Introduction . . . 1-1 Jackshaft, (Adjustment) ... 5-18 Jackshaft (Replacement) ... 5-18 Jackshaft Bearing (Replacement) ... 5-19 Jumper Options, Current Interface . . . 3 -13 Jumpers, Printed Circuit

Board (Table) ... 4-37 Keyboard ... 1-1, 3-6, 3-20 Keyboard (Replacement) ... 5-8

x

Keyboard, Entry Process . . . 3 -26 Keys, Backspace ... 3-6 Keys, Control Code . . . 3 -7 Keys, Escape Code . . . 3-7 Keys, Form Feed . . . 3 -6 Keys, Horizontal Tab . . . 3 -6 Keys, Line Feed . . . 3 -6 Keys, Repeat . . . 3 -6 Keys, Return . . . 3 -6 Keys, Shift and Lock . . . 3 -7 Keys, Vertical Tab . . . 3-7 Knob, Platen . . . • . . . 3 -7 Lamps and Switches, Auxiliary ... 4-12 LDIC Board, Functional

Description of . . . 3-36 Left Drive Belt (Replacement

and Adjustment) . . . 5-15 Lift, Ribbon . . . 3 -22 Line Control Option . . . 3 -15 Line Feed . . . 3 -2 5 Line Feed Circuits ... 3-27, 4-8 Line Feed Clutch (Replacement) . . . 5-17 Line Feed Key . . . 3 -6 Line Feed Solenoid (Replacement

and Adjustment) . . . 5-17 Line Length, Print . . . 1-3 Line Spacing . . . 1-4 LMPC Board, Functional Description of .... 3-38 Logic Clock . . . 3 -27 Logic Module, Electronic . . . . • . . . 1-3 Lubrication, Cleaning (Maintenance) 5-2 Lubrication,

Forms Tractor . . . 5-3 Left Jackshaft Bearing . . . 5-2 Line Feed Clutch.. . . • . . . 5-2 Platen Bearings . . . 5-2 Platen Drive Gears . . . 5-2 Platen Knob Shaft Bearing . . . 5-3 Print Belt . . . 5-3 Rear Idler Pulley . . . 5-2 Ribbon Reversing Mechanism . . . 5-3 Right Jackshaft Bearing . . . 5-2 Lubrication Table . . . 5-2 Magnetic Tape Optian . . . 3 -15 Main Drive, Operation of . . . 3-23 Main Frame (Replacement) ... 5-10 Maintenance, . . . 5-1

Adjustment Checks . . . 5-5 Cleaning and Lubrication ... 5-1 Lubrication Table ... 5-2 Routine . . . 5-1 Visual Inspection ... 5-1 Manual Paper Handling . . . 3 -7 Manuals, Related . . . 1-6 Mechanical Functional Troubleshooting . . . 4-14 Mechanical Operation . . . 3-20 MEMC Board, Functional

Description of. ... 3-3 5 Model and Serial Number Designations ... 1-5

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GEH-2185

INDEX (Continued) Modem, Built-In Option . . . 3-11

Motor (Replacement) . . . 5-23 Motor Circuits . . . 4-8 Motor and Line Feed Circuits . . . 4-8 Motor Off Code . . . 3 -7 Motor On Code . . . 3 -7 Noise . . . 1-3 Numeric Cluster, Operation . . . 3-15 Numeric Cluster Option . . . 3 -15 Odd-Even Pulse Circuits . . . 4-10 Operating Instructions and

Information, General . . . 3 -1 Operating Instructions and

Information, Option (General) . . . 3-11 Operating the VTFF Option . . . 3-18 Operation Keys, Printer . . . 3 -6 Operation, Mechanical . . . 3 -20 Operation, Principles of . . . 3 -1 Option Boards . . . 4-12 Options,

Answerback . . . 3-11 Automatic Motor Control . . . 3 -11 Automatic Return . . . 3 -11 Built-In-Modem . . . 3-11 Current Interface . . . 3-11 General Operating Instructions

and Information . . . 3 -11 Horizontal Tabulation . . . 3 -15 Line Control . . . 3-15 Magnetic Tape . . . 3 -15 Numeric Cluster . . . 3 -15 Paper Tape . . . 3-15 Parity Error Detection . . . 3-16 Red and Black Ribbon ... 3-17 Selective Addressing and Polling . . . 3-17 Transparency Switch . . . 3 -18 Vertical Tab and Form Feed . . . 3-18 Panel Lamps, Replacing . . . 3-9 Paper Advancement . . . 3-25 Paper Handler, External . . . 3 -13 Paper Handling, General . . . 3-24, 3-25 Paper Handling, Manual . . . 3 -7 Paper Handling System,

External (Adjustment) . . . 5-30 Paper Installation . . . 3 -7 Paper Pan (Replacement) . . . 5-16 Paper Pressure . . . 3-25 Paper Pressure Adjustment . . . 5-19 Paper Release Lever . . . 3 -7 Paper Required . . . 1-3 Paper Shield (Replacement) . . . 5-15 Paper Skew Adjustment . . . 5-20 Paper Supply, External . . . 3-7 Paper Supply, Internal . . . 3 -7 Paper Tape Option . . . 3 -15 Parallel to Serial Converter,

Entry Process . . . 3-26 PARC Board, Functional

Description of . . . 3-35

Parity ... . Parity Error Detection Option ... . Parts Replacement,

Bustle Frame ... . Bustle Printed Circuit Boards ... . Clevis and Plunger ... . Control Panel ... . Drive Belts ... . Ferrite Cores ... . Fluorescent Copy Lamp ... . Front Belt Guide ... . Hammer Bank and Print

Belt. Assembly ... . I Core and Clips ... . Jackshaft ... . Jackshaft Bearing ... . Keyboard ... . Line Feed Clutch ... . Line Feed Solenoid ... . Main Frame ... . Motor ... . Paper Pan ... . Paper Shield ... . Platen ... . Platen Knob ... . Power Transformer ... . Pressure Rollers ... . Print Belt ... . Print Finger ... . Ribbon Lift Solenoid ... . Ribbon Reversing Mechanisms ... . Ribbon Reversing Shaft ... . SLC Board Assembly ... . TXPC Board ... .

11U" Core Replacement ... . And Adjustments ... . PCAC Board, Functional Description of ... . PCHB Board, Functional Description of ... . Photocell Adjustment , ... . Photocell Amplifier, Printout Process .... . Photocell Board, Functional

Description of ... ~ ... . Platen (Replacement) ... . Platen Knob ... . Platen Knob (Replacement) ... . POWC Board, Functional Description of ... . Power Cable ... . Power, Input ... . Power Supplies ... . Power Supply, Functional Description of .. . Power Transformer (Replacement) ... . Pressure, Paper ... . Pressure Rollers (Replacement) ... . Principles of Operation ... . Print Belt Replacement ... . Print Belt Sticking ... . Print Line Length ... . Print Mechanism ... . Printable Characters ... . Printed Circuit Board Description

(Table) ... .

Index

1-5 3-16 5-11 5-11 5-25 5-24 5-15 5-8 5-25 5-21 5-25 5-8 5-18 5-19 5-8 5-17 5-17 5-10 5-23 5-16 5-15 5-16 5-16 5-23 5-16 5-21 5-17 5-11 5-11 5-13 5-8 5-11 5-10 5-8 3-38 3-40 5-27 3-26 3-38 5-16 3-7 5-16 3-40 1-3 1-3 3-27 3-28 5-23 3-25 5-16 3-1 5-21 4-15 1-3 1-1 1-4 4-18

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Index GEH-2185

JNDEX (Continued) Printed Circuit Board

Jumpers (Table)... 4-37 Printed Circuit Boards . . . 4-17 Printed Circuit Boards, Functional

Description of . . . 3-28 Printer, Functional Electronic

Description of . . . • . . . 3-26 Printer Operation Keys . . . 3-6 Printer Synchronization . . . 1-1 Print Finger (Replacement) ... 5-17 Printing Speed . . . 1-4 Printout Process ...• 3-26 PROC Board (Adjustment) ... 5-29 PROC Board Controls

Electrical Adjustment ...•..•... 5-7 PROC Board, Functional

Description of ... 3-38 Protection Circuits ... 4-8 PSCC Board, Functional

Description of ... 3-34 Pulse Circuits, Odd-Even ... 4-10 Punch, Paper Tape Option . . . 3 -16 RDRB Board, Functional

Description of . . . 3-40 Reader, Paper Tape Option ... 3-16 Rear Belt Guide Adjustment . . . 5-21 Rebound Bar Adjustment ....•..•... 5-22 Red and Black Ribbon Option . . . • . . . • . . 3 -17 Related Manuals . . . • . . . 1-6 Release Lever, Paper . . . 3 -7 Removal, Parts - See Parts Replacement . . . . 5-8 Repeat Key . . . 3 -6 Replacement, Hammer Decoder

Board (HDC) ... 5-24 Replacement, Parts - See Parts

Replacement . . . • . . . 5-8 Replacing Panel Lamps . . . 3 -9 Return Key . . . 3 -6 Ribbon (Recommended Types) . . . • . . • . . . 1-4 Ribbon (one color), Adjustments 5-5, 5-6, 5-13 Ribbon (two color), Adjustments .... 5-5, 5-6, 5-31 Ribbon Height Adjustment

(two color) . . . 5-31 Ribbon Installation . . . 3-8 Ribbon Lift . . . 3-22, 4-12 Ribbon Lift Circuits . . . 3-27 Ribbon Lift Shaft Adjustment ... 5-14 Ribbon Lift Solenoid (Replacement) ...•.. 5-11 Ribbon Lift Solenoid with One Color

Ribbon (Adjustment) .•... 5-11 Ribbon Lift Solenoid with Two Color

Ribbon, Adjustment . . . 5-31 Ribbon Reversing Mechanisms

(Replacement) . . . 5-11 Ribbon Reversing Shaft (Adjustment) ... 5-13 Ribbon Reversing Shaft (Replacement) ... 5-13 Ribbon Spool Drive System,

Operation of ... 3-21, 3-22 Right Drive Belt, (Replacement

and Adjustment) . . . 5-15 RO/SR Printers, Check Out of ... 2-5 Routine Maintenance ... 5-1

R&PC Board, Functional Description of ... 3-34 Selective Addressing and Polling Option. . . 3 -17 Send-Receive (SR) Printers ... 3-4 Serial Decoder, Printout Process ... 3-27 Serial Number Designations,

Model and . . . • . . 1-5 Serial To Parallel Converter,

Entry Process . . . 3 -26 Serial to Parallel Converter,

Printout Process . . . 3 -27 Set, Horizontal Tab . . . • 3 -7 Shift and Lok Key . . . 3 -7 Signals, Data . . . • . . 4-8 Size (of Printer) ... 1-3 SLC Board Assembly (Replacement) . . . 5-8 SLC Board, Functional

Description of . . . 3 -33 Space Bar . . . 3 -7 Spacing, Character . . . 1-4 Spacing, Line . . . 1-4 SPCC Board, Functional

Description of . . . 3 -3 5 Speaker Circuit ... 4-12 Specifications . . . 1-3 Speed, Printing . . . 1-4 Switch, Transparency . . . 3 -18 Switches and Indicators . . . 3-1 Switches and Lamps, Auxiliary ... 4-12 Synchronization, Printer . . . 1-1 System Check (KSR, ASR, or

MSR Only) ... 2-5 T&A Board (Adjustments) ... 5-29 T&A Board Controls,

Electrical Adjustment ... 5-7 T&AC Board, Functional

Description of . . . 3-37 Test Equipment ... 4-15 Test Plug, Obtaining a ... 4-8 Test Plug, Using the . . . • . . . . • . . . 4-8 Test Point Waveforms ... 4-56 Test Points ... 4-55 Timing ...•... 1-5 Timing and Alarm, Printout

Process . . . 3 -27 Tools, Suggested Standard

(Table 4-2b) . . . 4-16 Tools and Test Equipment,

Special (Table 4-22) ...• 4-15 Transparency Switch Option . . . 3 -18 Troubleshooting ... 4-1 Troubleshooting, Functional ... 4-8 Troubleshooting, Functional,

Electrical . . . 4-8 Troubleshooting, Functional,

Mechanical ... 4-14 Troubleshooting Guide ... 4-1 to 4-7 TXPC Board (Replacement) ... 5-11 TXPC Board, Functional

Description of . . . 3-40

1'U" Core (Replacement) ... 5-10

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GEH-2185

INDEX (Continued) Unpacking . . . 2-1

Unpacking and Installation . . . 2-1 Vertical Tab and Form Feed,

Adjustment . . . • . . . 5-31 Vertical Tab and Form Feed

Option . . . 3-18 Vertical Tab and Form Feed, Option,

Operating the . . . 3 -18

Vertical Tab and Form Feed,

Programming the Disc ... . Vertical Tab Key ... . Visual Inspection (Maintenance) ... . VTFC Board, Functional

Description of ... . Waveforms, Test Point ... . Weight (of Printer) ... .

Index

3-18 3-7 5-1 3-35 4-56 1-3

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GEH-2185 Introduction

CHAPTER I INTRODUCTION

GENERAL DESCRIPTION

The TermiNet 300 Printer is a quiet, compact,. high speed Printer designed for printing or sending information from or to computer systems or other Printers using the ASCil code*. The Printer can send information originating from its own keyboard or information from a paper punch or other external devices. The Printer can receive and send all 128 ASCil characters at speed rates of 10, 15, and 30 characters per second.

KEYBOARD

Keyboard operation is based on the coupling of a signal with ferrite magnetic cores to the appropriate logic (sense) lines when a key is pressed. When a key is pressed, the ferrite bar makes contact with a ferrite "U" core. The resulting transformer action couples a signal from a built-in oscillator to the selected outgoing sense lines. The sense lines are routed around and through the ferrite "U" cores in such a way as to generate the correct ASCil code for each key pressed. Electronic circuits are used to prevent false codes when more than one key is pressed at the same time.

PRINT MECHANISM

The Printer uses a belt printing concept to achieve its high speed and reliability. A belt carrying print

*

American Standard Code for Information Interchange

fingers rotates horizontally past a bank of hammers.

Each finger has a type character or symbol embossed on the upper en:d. There are two complete sets of characters (type fonts) on the belt.

Printing takes place by firing a hammer at the correct time to hit the selected print finger to be printed. The print finger is driven against the ribbon and paper to accomplish printing. The print finger and hammer rebound back to their original positions after contacting the platen.

PRINTER SYNCHRONIZATION

Precise synchronization permits the belt printing concept to work. The Printer's electronics compares the positions of the print fingers in front of the hammers. The hammer is fired. when the "called for"

print finger is in the correct position. Timing and synchronization of the comparison process is main- tained by means of timing pulses. Timing pulses are generated as each print finger passes a photocell;

thus, the control logic is continuously informed of the position of the print fingers with respect to the hammers.

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Introduction GEH-2185

Figure 1-lA. TermiNet KSR 300 Printer

Figure 1-lB. TermiNet RO 300 Printer 1-2

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Figure 1-2. Electronic Logic Module (Bustle).

ELECTRONIC LOGIC MODULE

The electronic logic module (bustle) is mounted at the rear of the Printer (see Figure 1-2). The bustle contains large-scale integrated circuits on printed circuit boards to provide the necessary circuits for Printer operation. The printed circuit boards are designed for interchangeability to keep maintenance and service to a minimum. The logic circuits are designed so that most of the basic functions and options are on one printed circuit board and can be re- placed or added as needed. Horizontal tabulation, and parity are examples of options that can be added at a later date as needs change. A description of each option is in Chapter 3. Some operations of certain printed circuit boards can be changed by changing jumpers (see Printed Circuit Boards, Chapter 4, Section 3).

SPECIFICATIONS

Standby noise is virtually non-existent and operating noise is quiet.

Overall dimensions of the TermiNet 300 Printer are approximately 7" (17. 8 cm) high (from desk top), 19. 75 inches (50. 2 cm) wide, and 26. 5 inches (67. 4 cm) long.

WEIGHT

Approximately 72 pounds {34 kg).

ENVIRONMENT

- Operating Temperatures, 32° F to ll0°F (0°

c

to 43°C).

- Humidity, 0-95 percent relative humidity, both operating and non-operating.

INPUT POWER

105 - 129 volts, 60 Hertz, Single Phase, 1. 5 Amps POWER CABLE

Standard 3 wire grounded 120 volt cable is supplied except on (50 Hz) export models.

PRINT LINE LENGTH

75, 80 or 118 print positions.

An original and six copies can be obtained from normal weight paper.

PAPER REQUIRED

Continuous rolls or sheets:

Long Roll -3" (7. 6 cm) diameter, 12 1/2" (31. 8 cm) wide and 7 /16" (11 mm) center hole.

Short Roll -5" (12. 7 cm) diameter, 8 1/2" (21. 6 cm) wide, and 1" (2. 5 cm) center hole.

(20)

Introduction

Long Pin Feed - Fan Fold, 12 27/32" (32. 6 cm) wide.

Short Pin Feed - Fan Fold, 8 1/2" (21. 6 cm) wide.

Variable Pin Feed - Models with the Forms Tractor option can use any width of Fan Fold paper up to 12 27 /32"

(32. 6 cm) wide.

NOTE

Total thickness of multiple form paper should not exceed . 025 inches (0. 6 mm).

PRINTABLE CHARACTERS

The 94 printable characters in the American Standard Code for Information Interchange (ASCIT) are all provided in the TermiNet 300 Printer.

PRINTING SPEED

Ten characters per second. Each character is processed at 110 baud (bits per second). (One start bit, seven information bits, 1 parity bit, and two stop bits).

Fifteen characters per second. Same as 10 characters per second except only one stop bit is used and information is processed at 150 baud.

Thirty characters per second. Same as 15 characters per second except information is processed at 300 baud.

NOTE

Number of stop bits is a strapped option at any speed.

b7 00

~

⁵ ⁰

~b4b3 b2bl ~ ₀

t t t t Rowt 0 0 0 0 0 NUL 0 0 0 I I SOH 0 0 I 0 2 ^STX

0 0 I I 3 ETX 0 I 0 0 4 EOT 0 I 0 I 5 ^ENQ

0 I I 0 6 ^ACK

0 I I I 7 ^BEL

I 0 0 0 8 BS

i I 0 0 I 9 ^HT

r

^I ⁰ ^I ⁰ 10 LF I 0 I I 11 VT I I 0 0 12 FF I I 0 I 13 CR

I I I 0 14

so

I I I I 15 SI 00

I

I OLE OCl DC2 OC3 OC4 NAK SYN ETB CAN EM SUB ESC FS GS RS

u.s

0 I

2 SP

!

II

# t O/o

8

I

( )

*

+ -

.

I

GEH-2185

CHARACTER SPACING

Horizontal - 10 characters per inch.

LINE SPACING Six lines per inch.

RIBBON

Recommended - Underwood, Catalog #210-46 l 7AAB/

DP Long Life Ribbon.

- Columbia 3202-20005 (Silk Gauze) -

#40 inking.

- Curtis Young DUO PAK, Nylon 44, Black Medium #4.

- Underwood Scriptor Duet, Black Medium #430 Nylon.

- Multigraph Buckeye #130-2070-115 Paquette, Black Rec. #5.

- General Ribbon Corp. G. E. TermiNet 300, Silk, Computer Black Heavy.

DATA RECEIVED AND TRANSMITTED

Data Communication Code - American Standard Code for Information Interchange (ASCII)

0 I I I I

I 0 0 I I

0 I 0 I 0 I

3 4 5 6 7

0 @ p ^\ p

1 A Q a q

2 B R b r

3 c s ^c ^s

4 0 T d t

5 E u e u

6 F v f v

7 G w g w

8 H x h x

9 1 y i y

J

z

j z

; K ^[ k {

< ^L ^\ I I T

= M ) m }

>

^N ^A ⁿ ^~

? 0

-

⁰ ^DEL

MSC-3002 Figure 1-3. ASCII Code Chart.

1-4

(21)

I TERMINET 300 PRINTER MODEL Nl.NBERS I

⁶

s ^30.y3g

^~^'155'

^C.'-f

1tlo5-~ _(:, iOS~

3S 3 0 0 0 A A O O O C I

7rR; ^T ^l

^p::^~_...:I

^L'L _l _I _I

·o ^~~

~

0 I 2 3 4 5 6

7 8

tf..l

z

~

::>

...:I 0 u

0 lO

x

tf..l tf..l

z z

::> ::> ~ ~ ...:I ...:I 0 0 u u

lO 0 t- co

x x

tf..l tf..l

z z

~ ~

::> ::>

...:I ...:I 0 0 u u

co

'l""I 0 'l""I ..qi

~

- X!l_

x

tf..l

z

~

::>

...:I 0 u

'l""I 0 'l""I

x x

A

c B D E

F G H

z J

~ 0

r...

~

^~

r...

0 0 0 0 0 ~ ~ ~ ~ ~ 1-1

z

~ ~ ~ ~ ~

E-4

il: r... r...

~

r... r...

u 1-1

z z z z z

p::

il: il: il: il:

^1-1

r...

^..qi_..qi ^P<t

C")

lO lO lO

C") "1 :: _a;)

r.c:i ^Ct)

'l""I 'l""I <» co

x

^--i

f x _l

I~

x x

0

x

~

x

~

r...

z x

1-1 P<t lo ..;i

x

r...

0 ^1-1

z

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~ E-4

r...

^1-1_...:I 2S ^P<t_tf..l

P<t

C") lO t- a(3

r.c:i co

x x

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~

z

s:: ~

A

c B D E F G H J K

L M

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~

^~

0 ^~

Jii;l ~ ~ u

E:

>

^p::

i::l~ ^1-1 I

~~

^u^~

_~

~!a ^~p:: ^~

~tj I ^tf..lI

li tf

^~

v

~

x x x

x x x x

~

OPTION GROUPS

p::

~

THIS NUMBER WILL BE

~ CHANGED SEQUENTIALLY 0 p::

>

_P<t _~AS DIFFERENT COMBINAT-

0 P<t IONS OF OPTIONS ARE MADE.

N

z

~

'l""I

g

DCP ENGINEERING WILL N ~ MAINTAIN A MODEL NUMBER ::z::

~

^~ASSIGNMENT BOOK WHERE

0 ::<

co

r...

~ THE OPTIONS ARE DESCRIB-

x

ED FOR EACH NUMBER.

THESE OPTIONS ARE: BAUD

x x

RATE, HORIZONTAL TAB,

x

LINE CONTROL, ANSWER-

x x

BACK, VERTICAL TAB AND

x

FORM FEED, ERROR DETEC- TION, TRANSPARENCY,

x x

SELECT, AUTO ON/OFF,

x

PARALLEL INTERFACE, IN-

x x

TERNAL MODEM, REVERSE CHANNEL MODULE, TIMER,

x

TYPE STYLE, WIDE ROLL

x x

KIT, AND OTHERS AS THEY

x

ARE IDENTIFIED.

x ^x

11 I I

I I

....___ _ _ _ _ _ _ ---.i - i I l..---J. _ _ _ _ ____.

3 S 3 0 5 0 A A O O O C I

ADJUSTABLE PIN FEED PAPER HANDLING

(WITH TRACTOR) PTM-3017

Figure 1-4. Model Number Code Chart.

TYPE OF DATA TRANSMISSION

All transmission is asynchronous. Full duplex telephone lines may be used; or two-way alternate transmission over half duplex telephone lines may be con- trolled automatically.

DATA SET INTERFACE

The TermiNet 300 Printer can be applied to voice grade lines by using any Modem device meeting RS- 232C specifications. Acoustic couplers also provide satisfactory interconnedion to transmission circuits. An Internal Modem, an option availalbe with the TermiNet 300 Printer, allows the Printer to be connected to a data access arrangement.

DATA SET CABLE

Standard EIA RS-232-C Interface.

TIMING

Transmission and receiving clocking is accomplished by a crystal oscillator which is accurate to ± • 05%.

PARITY

A parity option allows the Printer to check for "Even"

parity of data from the keyboard, phone lines, and auxiliary devices. "Even" parity is always generated by the Printer when the keyboard is operated.

MODEL AND SERIAL NUMBER DESIGNATIONS The nameplate shows both model number and serial number. On standard printers, the nameplate is located on the main frame inside the paper well. On printers with the forms tractor paper handler, the nameplate is located on the external right sideof the main frame.

(22)

Introduction

MODEL NUMBER

The model number on all Printers is coded to indicate model and options. Figure 1-4 is a chart that illus- trates how to interpret the code.

SERIAL NUMBER

The serial number, is a ten digit number broken down as follows:

First two digits - year of manufacture.

Second two digits - fiscal week of manufacture.

Fifth digit - equipment type.

Last five digits - manufacturing sequence number.

1-6

GEH-2185

RELATED MANUALS

Additional information on operating the TermiNet 300 Printer can be found in the Operator's Manual, GEH- 2184.

If the Printer is of the ASR type, refer to the Punch and Reader Service Manual, GEK-14776, for detailed information on that equipment.

Refer to Parts Manual, GEK-14999 for detailed information on parts.

(23)

GEH-2185 Unpacking and Installation

CHAPTER 2 UNPACKING AND INSTALLATION

UNPACKING

Examine shipping carton for possible damage. Im- mediately report any damage to shipper. Do not damage or discard shipping carton or polyurethane packing case. They should be used if it is necessary to return the Printer or ship to another location.

1. Open the top of the shipping carton.

2. Remove manuals and papers in the recessed area of the foam case.

3 . Cut the tape wrapped around the polyurethane packing case and lift off top half of case.

4. Remove the power cord from the pocket in the side of the lower half of the packing case.

5. Grasp the Printer at each side through the open- ings provided and remove the Printer from the lower half of the packing case.

6. Set the Printer on a firm flat surface. Tilt the Printer until it is resting vertically on the bustle.

7. Remove the four shipping screws on the bottom of the Printer's case. See Figure 2-1.

NOTE

Printers which are Pedestal mounted do not have shipping screws.

Shipping Screw Locations Figure 2-1

(24)

Unpacking and Installation

8. To prevent damage, the keyboard is locked before shipment. Unlock the keyboard as follows:

a. Loosen the two thumb screws located on each side of the bottom of keyboard.

b. Pull screws forward as far as they will go.

c. Retighten the two thumb screws in the forward position.

d. The keyboard is now in the unlocked condition and is ready for use.

e. To lock keyboard, reverse the procedure. Make sure keyboard is locked before shipping Printer.

9. Open the top cover and remove the data package, cables, miscellaneous from the paper roll compart- ment.

10. Remove the two short pieces of sponge rubber under the platen as follows:

a. Release platen latch lever on each side.

b. Remove platen.

c. Remove two sponge rubber pieces.

d. Replace platen and close platen latch levers.

ACTION Set the following switches to:

INHIBIT RATE LINE SPACE AUTO L. F.

TRANSPARENCY

- NORM position - 30 position - 1 position - OFF position - 0 FF position Press "Power On" switch (Located on back of terminal, right side) to the ON position.

Press LOCAL indicator /switch.

Press each key with a printing character on it.

Press RETURN key.

Press LF (Line feed) key.

2-2

GEH-2185

INSPECTION AND INSTALLATION

1. Make certain that ribbon spools are fully engaged on ribbon hub. Ribbon should be properly routed over guides and between print fingers and platen (see Chap- ter 3).

2. Make certain that drive belts are in place and routed properly.

3. Make certain that print belt turns freely by hand.

4. Inspect Printer for broken wires, loose or miss - ing parts, and accumulations of dirt, oil, or grease.

5. Install paper (see Chapter 3).

6. Install Printer in area where it is to be used and connect to power. To connect an ASR Model, see Punch and Reader Service Manual (GEK-14776).

Make certain that the power connection has a ground. The absence of a ground can result in damage to the Printer and cause er- roneous operation.

CHECKOUT PROCEDURE

This checkout procedure checks the general operation of the KSR Printer. It does not check every possible operating condition. Ignore those steps that apply to an option not provided.

RESULT

Audible tone sounds momentarily. ALARM indicator lights momentarily. ST AND BY indicator /switch lights.

LOCAL indicator/switch lights.

STANDBY indicator/switch goes out.

Motor starts.

Tone sounds when each key is pressed.

Appropriate character prints.

PPI (Print Position Indicator) count advances by one as each key is pressed.

PPI indicates "1".

Printer line-feeds one line.

(continued)

(25)

GEH-2185

ACTION

Press shift LOK key and press each key with printable character on it.

Press SIDFT key, which ·wilocks the shift.

Set AUTO L. F. (Automatic Line Feed) switch to the ON position.

Press RETURN key

Press ON LINE indicator/ switch Press STANDBY indicator /switch

Press LOCAL indicator/switch

Lift paper shield (NOTE: not applicable to forms tractor model)

Return paper shield to normal position.

EXTERNAL PAPER HANDLER OPTION NOTE

Internal paper out switch must be in the locked position.

Deactivate the external paper out switch on the paper handler by pressing the switch arm.

Activate the external paper out switch by releasing the switch arm.

Return the external paper out switch to its normal position (paper present).

Press LOCAL indicator /switch

Set LINE SPACE switch to the "2" position and press LF key.

Set LINE SPACE switch to the ¹¹1¹¹position.

Set RATE switch to the ¹¹15¹¹position and press any character key several times.

Set RATE switch to the "10" position and press any character key several times.

Set RATE switch to the "30" position.

RESULT

Appropriate upper case character prints.

Printer line-feeds one line. PPI indicates "1".

ON LINE indicator/switch lights.

LOCAL indicator/switch goes out.

STANDBY indicator/switch lights.

ON LINE indicator goes out.

Motor stops.

LOCAL indicator/switch lights.

STANDBY indicator/switch goes out.

Motor starts.

Alarm tone sowids momentarily.

ALARM indicator lights.

Motor stops.

LOCAL indicator

I

switch stays lit.

ALARM indicator goes out.

Alarm tone sowids.

ALARM indicator lights.

Motor stops (if DATC board is so jumpered).

LOCAL indicator remains lighted.

ALARM indicator goes out.

Motor starts (if stopped in previous step).

Motor starts.

Printer Line-feeds two lines each time LF key is pressed.

Character should print.

(continued)

(26)

ACTION Press RETURN key.

Press the Space Bar repeatedly and observe PPI.

Press BS (Backspace) key several times and observe PPI.

Press RETURN key.

Press and hold any character key and also press and hold the RPT (Repeat) key.

Press RETURN key.

Set INIIlBIT switch to the PRINT position and press any character key several times.

Set INIIlBIT switch to the TRANS position and press any character key several times.

Set INHIBIT switch to the NORM position.

Press RETURN key.

EQT, ESC :/f, ESC J, AND BEL RECOGNITION OPTION

Press and hold CTL (Control) key while pressing and releasing D (EOT) key.

Press and release ESC (Escape} key; then press and release H (Motor on) key

Press and release ESC (Escape) key; then press and release J (Motor off) key.

Press and release ESC (Escape) key; then press and release H (Motor on) key.

Press and hold CTL (Control) key while pressing and releasing G (BEL) key.

TRANSPARENCY OPTION

Set TRANSPARENCY switch to ON position and press any character key several times.

Set TRANSPARENCY switch to the OFF position.

2-4

GEH-2185

RESULT PPI indicates "l".

PPI increments by one up to 76 (short print line Printer) or 119 (long print line Printer). The alarm should sound at counts 68 and 76 (short print line) or 111 and 119 (long print line).

PPI count should decrease by one each time BS key is pressed.

PPI indicates "1".

The Printer repeatedly prints the character (at 5 characters per second rate) as long as the RPT key is held.

PPI indicates "1".

Printer line-feeds one time.

Characters will not print.

Characters should print.

PPI indicates "1".

Motor stops (if DATC is so jumpered).

PPI goes out.

Motor starts (if DATC is so jumpered).

PPI indicates "1".

Motor stops (if DATC is jumpered).

PPI goes out.

Motor starts (if DATC is jumpered).

PPI indicates "1".

Tone sounds approximately one-half second.

Characters will not print.

(continued)

(27)

GEH-2185

ACTION HORIZONTAL TAB OPTION Press RETURN key.

Press space bar repeatedly until 10 appears on PPL

Press and release ESC key.

Then press and release HT SET (Horizontal Tab Set) key.

Press space bar until PPI indicates 20.

Press and release ESC key, then press and release HT SET key.

Press RETURN key.

Press HT (Horizontal Tab) key Press HT key.

Press RETURN key.

Press a.11d release ESC key then press and release HT CLR (horizontal Tab Clear) key.

Press Return Key.

ANSWERBACK OPTION

With Printer in LOCAL mode, press HERE IS pushbutton switch.

RED/BLACK PRINT OPTION

Using red/black tape, print black line of text.

Press and release ESC (Escape) key; then press and release 4 key.

Pause briefly and type line of text.

Press and release ESC (Escape) key; then press and release 3 key.

Pause briefly, and type line of text.

CHECK OUT OF RO/SR PRINTERS

Receive only and Send Receive Printers are checked out by sending data from an external source to them.

The accuracy of the received message verifies the correct operation of the Printers.

SYSTEM CHECK (KSR, ASR, OR MSR ONLY) If a problem exists after installing the Printer in the

RESULT

PPI indicates ¹¹1¹¹^•

Beep tone.

PPI indicates nto".

PPI indicates ¹¹20".

PPI indicates 76 (short print line) or 119 (long print line) .

PPI indicates ¹¹10¹¹•

Beep tone.

PPI indicates "1¹¹^•

Printer should print Answerback Test message if Answerback Board is coded and plugged in.

Printing should be in black.

Printing should be in red.

Printing should be in black.

system, a test plug can be fabricated to simulate an non Line¹¹condition. The problem can then be isolated to the Printer or external equipment. If the problem is isolated to the Printer, the test plug can assist further troubleshooting. Ref er to Chapter 4, Section 2, (Functional Troubleshooting, Test Plug) for information on fabricating and using the test plug.

(28)

(29)

GEH-2185

CHAPTER 3

Principles of Operation General Operating Instructions And Information

PRINCIPLES OF OPERATION

SECTION 1 GENERAL OPERATING INSTRUCTIONS AND INFORMATION

SWITCHES AND INDICATORS switches and indicators on the control panel and the switches at the rear of the Printer (see Figures 3-1, 3-2, and 3-3).

The following photographs and table point out the locations and explain the basic functions of the

NAME ALARM

AUTO L. F.

(Automatic Line-Feed) ALL CAPS (Upper Case) HERE IS (Optional) INIDBIT

INTERRUPT

LINE SPACE

Table 3-1.

Switches and Indicators - KSR Printer TYPE

Indicator

Slide Switch

Pushbutton Switch 3 Position Toggle Switch

Pushbutton Indicator/

Switch

Toggle Switch

FUNCTION Indicates one or more of the following:

- Low paper

- Paper shield up (not on Forms Tractor models) - Punch out of paper (if in ASR configuration) - Problem in the Printer

When in the ON position, the paper is advanced automatically when the RETURN key is pressed. (Has no effect on incoming data.)

When placed in the ON position, all alphabetic printing caused by the keyboard will be upper case.

Triggers terminal answerback code (see Section 2 of this Chapter).

- PRINT position, inhibits printing and paper punching from local source.

- NORM position, printing is normal.

- TRANS position, inhibits transmission of data;

incoming data not affected.

- Lights when "Break" or "Interrupt" is received. Alarm sounds, keyboard is deactivated, and paper tape reader or TCA is turned off. Data may still be received. Motor is not turned off.

- When "Break" or "Interrupt" is received with lamp lit, tape reader or TCA will turn off if on. Data may still be received. Motor is not turned off.

- When pressed with lamp lit, light goes out but a "Break" is not transmitted. Keyboard is restored to normal.

- When pressed with lamp out, a "Break" is transmitted.

Lamp does not light.

- Set on "1", single line-space.

- Set on "2", double line-space. (Only 1 line-feed character sent externally for each generated LF.)

(continued)

(30)

Principles of Operation GEH-2185 General Operating Instructions And Information

Table 3-1. Switches and Indicators - KSR Printer (continued)

NAME TYPE FUNCTION

.LOCAL Pushbutton

I

Lights when pressed. Enables local Printer operation but Indicator/ does not allow the transmission or reception of data.

Switch

ON LINE Pushbutton Lights when pressed. Turns Printer motor on and enables

I Indicator/ the transmission and reception of data.

I

Switch

I

Print Position Digital Display Shows position of next character to be entered.

Indicator

POWER ON Switch Turns on power to Printer. (Located at right rear of Printer.) RATE 3 Position Selects any three of 10, 15, 30 or 60 CPS receiving

Toggle Switch and transmitting speed. Can be jumpered for 120 cps transmission with the INHIBIT switch in PRINT position.

I READY Indicator Indicates data set is ready for transmission.

J

I

STANDBY I Pushbutton Lights when pressed. Turns motor off but leaves electronics

I Indicator/ turned on which enables the transmission and reception of data. : I I Switch

I I

J

i

TRANSPARENCY Toggle Switch Allows the Printer to process (receive or transmit) codes I (Optional) other than ASCII but inhibits printing (see Section 2 of this ^I

chapter).

J

I Low Paper Switch Detects low paper condition and causes an alarm. Switch (Internal Paper can be placed in a locked out position.

Supp~ ^I

I

Cover Interlock Switch _I Print belt stops when cover is lifted. Can be locked out with

I

lock-out lever. If Printer is in Local, it will stay in Local.

If Printer is On Line, it will go to Standby.

I

Ei€I

Power is still on when the cover is lifted.

Paper Shield Up Switch Causes an alarm condition when the paper shield is in the ^I

"up" position (not on Printers with Forms Tractor).

I

3-2

(31)

GEH-2185

PUSHBUTTON SWITCHES AND

INDICATORS

TOGGLE SWITCHES

Figure 3 -1. KSR Keyboard and Control Panel

PUSHBUTTON

SWITCHES AND INDICATORS

Figure 3 -2. RO Control Panel

(32)

Table 3-2

Switches and Indicators - RO Printer NAME

ALARM

FORM FEED

INTERRUPT

LINE FEED

LINE SPACE

MOTOR OFF

MOTOR ON

RATE

READY

TYPE Indicator

Pushbutton Switch Pushbutton Indicator/

Switch Pushbutton

Toggle Switch

Pushbutton Indicator/

Switch Pushbutton Indicator/

Switch 3 Position Toggle Switch Indicator

SEND-RECEIVE (SR) PRINTERS

I

l

I

I I

FUNCTION Indicates one or more of the following:

-

Low paper.

- Paper shield up. (Not on Forms Tractor models.)

-

Problem in the Printer.

When pressed, causes paper to feed continuously to the beginning of the next new form.

-

Lights when "Break" or "Interrupt" is received.

- When pressed with lamp lit, lamp goes out, but a "Break"

is not transmitted.

Will cause paper to feed one line each time it is pressed and quickly released. When pressed and held, paper will con- tinue to line feed incremental! . y

- Set on "1", single line-feed.

Set on "2", double line-feed.

Lights when pressed. Turns motor off but leaves electronics turned on.

Lights when pressed. Turns motor on.

Selects "10", "15", or "30" characters per second depending on rate of incoming data.

Indicates data set is ready for reception of data.

I

j

The switches and indicators on SR Printers are identi- cal to those found on RO Printers explained in Table

3-2. The main difference between the SR and RO versions is that SR Printers have transmission capability principally for answerback and line control options. RO versions have receiving capability only.

3-4

(33)

GEH-2185

ADJUSTABLE PAPER GUI DES EXTERNAL

PAPER RACK

Figure 3-3. Right Rear View of Printer.

TOP COVER OF PRINTER

Figure 3 -4. Left Rear View of Printer.

·.~J;r·.·.··

READER CONNECTOR

PKM-3006

(34)

Figure 3-5. Switch Locations and Manual Controls.

AUDIBLE INDICATORS

- Beep tone each time a character is sent.

- High pitch beep tone at print position 69 (111, long print line) and after print position 75 (118, long print line) .

- High pitched beep tone when ALARM indicator lights.

- High pitched beep tone when INTERRUPT indicator lights.

KEYBOARD

\See Figure 3-1) GENERAL DESCRIPTION

The keyboard of the Printer can generate all of the 128 ASCII codes. Special codes are generated by pressing the ESC (Escape) key or the CTL (Control) key and another appropriate key. The ESC key and its associated keys are shaded. Most of the control keys are identified on their front edge.

3-6

NOTE

The SHIFT, CTL, or RPT (Repeat) key must be held while the associated key is pressed. The ESC key must be pressed and released before the associated key is pressed.

PRINTER OPERATION KEYS

BS (Backspace) - This key moves the print position one position to the left without printing a character.

LF (Line Feed) - This key advances the paper one or two print lines depending on the setting of the LINE SPACE switch.

FF (Form Feed) - Optional - Pressing this key sends the FF character and causes the paper to advance to the beginning of the next form (see Section 2 of this Chapter).

HT (Horizontal Tab) - Optional - Pressing this key sends an HT character, and moves the printing position to a predetermined print position (see Sec- tion 2 of this Chapter).

RPT (Repeat) - Holding this key will cause any other pressed key to repeat at the rate of five characters per second regardless of speed setting.

RETURN - With the AUTO LF switch in the OFF position, pressing the RETURN key retums the Printer to the left hand margin or the first horizontal tab if this option is present. With the AUTO LF switch in the ON position, pressing the RETURN key returns the Printer to the left hand margin and causes a line feed.

GENERAL. ELECTRIC

SERVICE

MANUAL