HP Deskjet 9800 User manual

9800

Computers

98750

Handbook

Part No. 98750-90039

E0982

Requires Binder No. 9282-0683

Flin-

HEWLETT

a:~

PACKARD

Printed in

US.A

First

Edition, September 1982

98750

Handbook

This document refers to proprietary computer software which is protected by copyright

All rights are reserved. Copying orotherreproduction ofthis programexcept for archival

purposes is prohibited without the prior written consent

Hewlett-Packard Company

Hewlett-Packard

Company

3404 East Harmony Road, Fort Collins, Colorado 80525

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98750

Product

Information 1-1

Chapter 1

Product Information

CRT Display Specifications

Screen

Size:

Refresh Rate:

CRT Phosphor:

Alpha Raster:

Character Size:

Screen

Capacity:

Graphics Raster:

261 mm x

193

mm (10.3 x

7.6

inches)

60Hz

P31

236

mm x

123

mm (9.3 x

4.84

inches)

2.3 mm x

2.95

mm (.09 x

.116

inches)

lines of

characters

200

mm x

162.5

mm (7.9 x

6.4

inches)

Options and Configurations

The 98750A

available as an integral part of the 9845B

#lxx.

See

the 9845B Base CE

Handbook Chapter for option information.

09845-92030

09845-93050

09845-92005

Related Documentation

Service Manual

Monochromatic Graphics Programming Manual

Owner's and System Exerciser Manual

Product Support Package

The 98750A service tools are included

the 9845B Product Support Package. Refer to the

9845B CE Handbook Chapter.

Safety

WARNING

LETHAL VOLTAGES ARE PRESENT INSIDE THE 98750A.

RE-

FER TO THE GENERAL SAFETY GUIDELINES

THE

98458

SERVICE

MANUAL.

1-2

98750

Product

Information

98750 Environmental/Installation/PM 2-1

Chapter 2

Environmental/Installation!

Preventive Maintenance

Installation

After unpacking the computer, the CRT assembly must

mounted

onto

the mainframe

assembly. The CRT assembly

will

lock into place on top of the mainframe support legs. It

important that the gUides on the CRT assembly

and

the mainframe support legs are aligned

properly before assembly. Figure 2-1 shows the proper alignment necessary for

the

CRT

assembly installation. Notice how the buttons on bottom of the CRT assembly align with the

notches in the support legs.

Figure 2-1.

CRT

Assembly Installation

2-2 98750 Environmentalilnstallation/PM

Preventive Maintenance

Clean

the

case parts

and

tube

face occasionally with mild

soap

and

water

alcohol. Do

not

use

harsh, abrasive,

other

general

purpose

cleaners.

Base Configuration

98750

Configuration 3-1

Chapter 3

Configuration

The following assemblies must be installed

the 9845B base to support the98750A.

09845-65517

1818-0831

and 1818-0835

09845-66503

Graphics

ROM

Mainframe

ROM

for Graphics

ROM

Mainframe

ROM

for Graphics

ROM

Alpha Control Assembly

Refer tothe 9845BBase CE Handbook Chapter for the locations of these parts.

Interfacing

The 98750A interfaces to the 9845B base via the Alpha Control Assembly (09845-66503)

and

the Graphics Interface Assembly (09845-66504). Alpha information

stored

block 0 read-

write memory, and

refreshed to the display via the

IDA

bus. Graphics information

transfer-

red via the

110

bus to the display, where

interpreted

and

entered into the display memory.

3-2

98750

Configuration

Status Word

The

Status Word

may

obtained by executing the following instructions:

STATUS

DISP

The

result

a decimal integer which may

converted to binary

and

interpreted as shown

below.

4 o

1101011101010010

LID

Bit

'-------1/0

Status Bit

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