Digital Equipment PC04 Manuel utilisateur

Maynard, Massachusetts

aintenanc

anual

4/PC05

DER/PU

ER-TAP

(FEED-HOLE

STROBED

DEC-OOPCOA-D

(

)

PC04/PCO5

PAPER-TAPE

READER/PUNCH

(FEED-HOLE STROBED MODELS)

This manual pertains

only

to those

PC04

PC05

models that

strobe the data

the signal derived from the feed holes. This

method

provided when

ECO

number

PCO4-00046

PC05

00021

is implemented on the corresponding

PC04

PC05

unit.

When the unit is not implemented with the above

ECO,

refer

instead to the corresponding maintenance manual:

PC04

(Document Number

DEC-00-HGPA-D)

PC05

(Document Number DEC-00-HGHA-D).

DIGITAL EQUIPMENT CORPORATION MAYNARD, MASSACHUSETTS

Edition, August 1970

2nd Printing

(Rev)

June 197

3rd Printing October 1972

4th Printing December 1972

1970, 197

1972by Digital Equipment Corporation

The material

this manual

for information-

purposes

and is subject to change without

notice.

The following are trademarks of Digital Equipment

Corporation, Maynard, Massachusetts:

DEC PDP

FLIP CHIP FOCAL

DIGITAL COMPUTER LAB

CONTENTS

Page

CHAPTER

GENERAL INFORMATION

1.1

Scope

1.2 General Description

1.3

Functional Description

1.3.1 Reader

1.3.2 Punch

1.4 Specifications

CHAPTER

INSTALLATION

2.1 Inspection

2.2 Installation

2.2.1 Mounting

2.2.2 Connections

2.2.3 Module Configurations

2.3 Power Requirements

2.4 Checkout

CHAPTER

OPERATION

3.1 Introduction

3.2 Controls and Fuses

3.3 Operating Instructions

3.3.1

Loading Blank Tape

3.3.2 Loading Prepunched Tape

CHAPTER

PRINCIPLES

OPERATION

4.1

4.1.1

4.1.2

4.1.3

4.1.4

4.1.5

4.2

4.2.1

4.2.2

Paper-Tape Reader

Tape Feed Operation

Tape Reading

Tape Reader Control

Out-of-Tape

Strobe

Paper-Tape Punch

Feed Control

Tape Punch Control

CHAPTER

MAINTENANCE

5.1

Introduction

5.2 Preventive Maintenance

5.2.1 Preventive Maintenance Procedures

5.2.1.1 Mechanical Checks

5.2.1.2 Electrical Checks

5.3

5.3.1

Introduction

PCO4/PCO5 Reader Adjustments (Feed-Hole Strobed Models)

1-1

1-2

1-3

2-1

2-2

2-3

3-1

3-3

4-1

4-2

4-3

4-4

5-1

5-2

...

ll1

CONTENTS

(Cont)

Page

5-3

-4

5-5

5-6

5-8

5-9

5-1

5-10

5-1

5-1 1

5-1

5-13

5-15

5-1

5-16

5-1

5-16

5-1

5.3.2

5.3.3

5.3.4

5.3.5

5.3.6

5.3.7

5.3.8

5.3.9

5.3.

5.3.1

1.1

5.3.1

1.2

5.3.1 1.3

5.3.1

1.4

5.3.1 1.5

5.3.1

1.6

5.3.1 1.7

5.4

5.4.1

5.4.2

5.4.2.1

5.4.2.2

5.4.2.3

5.4.3

5.4.4

5.4.5

5.4.5.1

5.4.5.2

5.4.6

5.4.6.1

5.4.6.2

5.4.6.3

Prcliminary Adjustments

Test Tape Registration

Feed Whccl and Motor Adjustmen

Tape Depressor

Tape Hold-Down Bracket

Lamp,Lens, and Light Pattern

Full-Speed Running Rate

Acceleration and Stop Delay

Threshold and Skew

Testingand Error Correction

Data Bits Picked Up

Data Bits Dropped

SkippingCharacters

Double Reading

DroppingFlags

Out-of-Tape Circuit

Acceptance Testing

Punch Adjustment Procedures

General

TapeOutputQuality

Sprocket Wheel Adjustment

Burred Feed Holes

Elongated Feed Holes

Tape Depressor

ElectricalParameters

Basic Timing

Method (1)

Method

(2)

Magnet Adjustments

Pulse GeneratorAir Gap

Forward Index Magnet Armature Adjustment

Punch Magnet Adjustment

CHAPTER

REFERENCEDRAWING LIST

APPENDIX A DIAGNOSTIC PROGRAMS

APPENDIX

SUGGESTED PROGRAMS FOR ALTERNATE ONES AND ZEROS TEST ‘TAPES

APPENDIX C STALL PROGRAMS

APPENDIX

SUMMARY SET-UP PROCEDURE

ILLUSTRATIONS

Figure

No.

1-1

1-2

3-2

4-1

4-2

5-2

5-3

-4

5-5

5-6

5-7

5-8

5-9

5-1

5-14

5-1

Table No.

1-1

1-2

2-2

5-2

5-3

5-4

6-2

6-3

Title

Reader Functional Block Diagram

Punch Functional Block Diagram

PCO4/PCO5 Module Locations

Paper Tape Path, Top View

Installing Tapc in Paper-Tape Reader

Tape Feed Operation

Simplified Block Diagram, Punch Operation

Regulator Board

Feed Wheel and Motor Adjustment

Tape Depressor

Tape Hold-Down Bracket

PCO4/PCO5, Rear View

Light Pattern

M040 Input and Output Waveforms

Acceleration and Stall Waveforms

Summation Waveform,

Test Point

Specifications for

I-In.

Paper Tape

Improved Tape Dcpressor

Electrical Parameters

Punch Assembly

Forward Index Magnet Armature

Punch Magnet

Art No.

CO-0479

C0-0480

CP-0133

CO-0478

C0-047 1

CP-0034

CP41

CP-0

CP-0033

CP-0

CP4113

CP-01

C0-0473

CO-0476

C0-0474

C0-0472

C0-0475

TABLES

Title

PCO4/PCO5 Configurations

PCO4/PCO5 Specifications

CPU and BA Connections

Module Configurations

PCO4/PCO5 Controls and Fuses

Required Maintenance Equipment

Power Supply Output Checks

M040 Motor Driver Input and Output Pin Locations

PhotoamplifierPin Locations

PC04 Engineering Drawings

PC05 Engineering Drawings

PCO4/PCO5Module Circuit Schematics

Page

1-2

1-3

2-2

3-2

3-3

4-2

4-4

5-3

5-5

5-6

5-7

5-8

5-9

5-10

5-12

5-14

5-16

5-17

5-18

Page

1-1

1-4

2-1

2-3

3-1

5-1

5-2

5-8

5-9

6-1

6-2

PC04

(Used

with PC04

(Used

with

PDP-81) PDP-8E and 8L)

Description

Reader Only PC04R PC04RB

Punch Only PCO4P, PA* PCO4PL, PM*

Reader and Punch PC04BB, BC* PC04BL,

BM*

CHAPTER

GENERAL INFORMATION

PC05

(Used

with

PDP-11,

12,

and

15)

PCOSR

PCOSP, PA*

PCOSC, CA*

1.1

SCOPE

This manual contains maintenance information for both the PC04 and PC05 High-speed Paper-Tape Readers and

Punches (feed-hole strobed models only) manufactured by Digital Equipment Corporation (DEC). The earlier

versions

thc PC04 and PCOS models, which do not strobe the data by the signal derived from

the

feed holes,

are described in the followingmaintenance manuals:

PC04

Maintenance Manual,

DEC-00-HGPA-DIand

PC05

Mainten~/~ce

Matlual,

DEC-00-HGHA-D.

The

PC04

currently used with the PDP-8E, PDP-81, and PDP-8L computer systems, and the PCOS

used with

the PDP-I

PDP-1

and PDP-15 computer systems. Each computer system has its own unique interface and

control characteristics; consequently, this manual discusses only the electrical and mechanical operations of the

basic reader and punch and considers the computer

external piece of equipment.

1.2

GENERAL DESCRIPTION

The PCO4/PCOS High-speed Reader and Punch is supplied as an option to the various computer systems and is

available in the configurations listed in Table

1-1.

1-1

The tape punch mechanism is a Roytron Model

500

modified by DEC. Contained in the unit is an electromechan-

ical tape feed and punch system capable of punching five-, seven-, oreight-level tape. In addition, an SCR Driver

is included on the

PC05

that switches the ac power

the punch motor after a command to punch

received.

FEED HOLE OUT OF TAPE

RD HOLE

SD RD HOLE

RD HOLE

RD HOLES

1-8

M040

M7050

READER

RD HOLE

CONTROL

RD HOLE

MODULE SKIP

HOLE

RD HOLE

INTERRUPT

READER FEED SWITCH

1.3

FUNCTIONAL DESCRIF’TION

INPUT/

OUTPUT

BUS

1.3.1

Reader

functional block diagram of the tape reader is shown in Figure

1-1.

The read head, located below the tape,

contains nine photocells;eight for sensing data and one for sensing the feed hole.

The light source is located directly above the tape channel and read head. As the tape passes over the read head,

each photocell senses the presence (a hole) orabsence (no hole)

light. When a hole is detected, tlhat photocell

is activated and feeds an individual photoamplifier. The output of the photoamplifier is sent

the M7050

Reader Control Module, which temporarily stores the eight data bits in a buffer and then signals the: central pro0

essor that data is available. The central processor responds with a command that strobes the data (KD holes

through

into the central processor via the Input-Output Bus lines.

The reader FEED switch, when pressed, enables the reader control, which advancesthe tape through the read

head without actually reading.

Figure

1-1

Reader Functional Block Diagram

CPU

Tape is advanced through the read station in a steppingmotion by a sprocket wheel connected to the shaft of the

reader drive motor. The

M040

Solenoid Driver Modules provide drive current to the two center-tapped motor

windings in turn.

each half

a winding is activated, the motor and, hence, the sprocket wheel rotate to pull

the tape through the read station.

1-2

Ce manuel convient aux modèles suivants

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