Televideo 925 User manual

Model

925

Maintenance

Manual

o®

1£1eVideo Systems,Inc.

TELEVIDEO®

925

VIDEO

DISPLAY

TERMINAL

MAINTENANCE

MANUAL

Document

120036-00-A

26

July

1985

Copyright

(c)

1985

by

TeleVideo

Systems,

Inc.

All

rights

reserved.

No

part

of

this

publication

may

be

reproduced,

transmitted,

transcribed,

stored

in

a

retrieval

system,

or

translated

into

any

language

or

computer

language,

in

any

form

or

by

any

means,

electronic,

mechanical,

magnetic,

optical,

chemical,

manual,

or

otherwise,

without

the

prior

written

permission

of

TeleVideo

Systems,

Inc.,

550

East

Brokaw

Road,

P.O.

Box

6602,

San

Jose,

CA

95150-6602.

Disclaimer

TeleVideo

Systems,

Inc.

makes

no

representations

or

warranties

with

respect

to

this

manual.

Further,

TeleVideo

Systems,

Inc.

reserves

the

right

to

make

changes

in

the

specifications

of

the

product

described

within

this

manual

at

any

time

without

notice

and

without

obligation

of

TeleVideo

Systems,

Inc.

to

notify

any

person

of

such

revision

or

changesc

TeleVideo

is

a

registered

trademark

of

TeleVideo

Systems,

Inc.

TeleVideo

Systems,

Inc.,

550

East

Brokaw

Road,

P.O. Box

6602,

San

Jose,

CA

95150-6602

408/971-0255

TABLE OF CONTENTS

1 .

2.

Service

and

Warranty

Information

Regional

Sales

Offices

statement

of

Limited

Warranty

Ordering

Spare

Parts

PCB

A.ssembly

Control

Board

PCB

A.ssembly

Control

Board

Gate

PCB

A.ssembly

Video

Monitor

PCB

~ssembly

Power

Supply

Detachable

Keycaps

Array

3.

Installation

and

User's

Guide

4.

Theory

of

Operation

Overview

Operating

Clocks

A.ddress

Decoding

Terminal

Memory

Display

Fundamentals

Interrupt

Signals

Video

Generation

Communications

Data

Sheets

5.

Schematics

6.

NOTE!

Video

Monitor/Power

Supply

schematics

are

contained

in

Section

6

of

tbis

manual.

Video

Monitor/Power

Supply

Video

Monitor

Tube

Specification

Shock

Hazard

Power

Supply

Video

Monitor

and

Power

Supply

Modules

TR

Waveforms

and

Voltages

Power

Supply/Video

Monitor

Schematics

7.

Troubleshooting

Guide

8.

Bulletins

and

A.ddenda

iii

1-1

1-2

1-3

2-1

2-3

2-5

2-7

2-9

2-11

4-1

4-2

4-3

4-4

4-5

4-6

6-1

6-3

6-5

6-6

6-7

6-8

6-9

LIST

OF

FIGURES

Section

4

4-1

925

control

Board

Block

Diagram

Section

6

1 .

2.

Spar'k

Gaps

Discharging

Voltages

LIST

OF

TABLES

4-1

925

Memory Map

iv

4-8

6-3

6-5

4-9

SERVICE

AND WARRANTY INFORMATION

If

your

terminal

has

technical

problems,

TeleVideo's

Technical

Support

Department

will

assist

you.

The

toll-free

numbers

are

800/821-3774

{inside

California}

or

800/521-4897

(outside

California).

International

customers

can

telex

4745041.

Or

you

can

call

your

regional

sales

office,

listed

in

this

section.

~

repairs

price

list

is

in

the

last

section

of

this

manual.

SERVICE

UNDER

WARRANTY

TeleVideo

products

are

covered

by

a

limited

warranty,

found

in

this

section.

For

service

under

warranty

you

must

return

products

to

TeleVideo's

factory

repair

facility.

Return

Procedures

1.

To

return

a

terminal

or

part

for

service,

call

Customer

Service

for

a

Return

Material

~uthorization

(RM~)

number.

2.

Have

the

following

information

ready:

Your

name

and

your

company's

name,

address

and

telephone

number.

Give

a

street

address,

since

freight

delivery

services

do

not

deliver

to

a

post

office

box.

Your

terminal's

model

number

and

serial

number.

A

brief

but

accurate

description

of

the

problem.

If

you

have

more

than

one

problem,

list

each

problem

separately.

~

separate

RM~

will

be

issued

for

each

item.

Televideo

can

repair

only

the

problems

described-

on

an

RMA.

3.

Taq

each

i

tern

to

be

returned

wi

th

the

RMA

number

and

your

description

of

the

problem.

This

is

especially

important

if

you

plan

to

ship

more

than

one

part

in

the

same

container.

See

the

Operator's

Manual

for

information

about

packing

the

terminal

for

shipment.

4.

Write

the

RM~

number

on

the

shipping

label.

TeleVideo

will

refuse

any

item

delivered

without

an

RMA

number

on

the

outside

of

the

shipping

carton

and

return

it

to

the

sender~

5.

Use

the

RMA

number

if

you

call

to

ask

about

your

terminal

while

it

is

being

repaired.

6.

If

the

item

is

under

warranty,

it

will

be

returned

to

you

via

best

way.

All

express

shipments

will

be

at

the

customer's

expense

and

must

be

requested

when

receiving

the

RMAe

1-1

REGIONAL

SALES

OFFICES

East

6900

Jericho

Turnpike

Suite

100

LL

Syosset,

NY

11791

(516)

496-4777

West

18662

MacArthur

Blvd.

Suite

#107

Irvine,

CA

92715

(714)

476-0244

Southcentral

5525

High

Point

Drive

Suite

#101

Irving,

TX

75062

(214)

258-6776

Southeast

6075

The

Corners

Parkway

Suite

#208

Norcross,

GA

30092

(404)

447-1231

Northern

Europe

Dorna

House,

Guildford

Rd.,

West

End

Surrey

GU249PW

England

Phone:

011-44-9905-6464

Telex:

858922

1-2

Northeast

1601

Trapelo

Road

Reservoir

Place

Waltham,

MA

02154

(617)

890-3282

Northwest

550

East

Brokaw

Road

P.O.

Box

6602

San

Jose,

CA

95150-6602

(408)

971-0255

Midwest

1002

E.

Algonquin

Road

Suite

#112

Schaumburg,

IL

60195

(312)

397-5400

Central

Europe

Saturnusstraat

25

2132

HB

Hoofdorp

The

Netherlands

Phone:

011-31-2503-35444

Telex:

74615

TLVDO

NL

Southern

Europe

3

bis

rue

leCorbusier

bat.

Berne

Silic

244

94568

Rungis

Cedex,

France

Phone:

011-33-1-687-34-40

Telex:

205l91F

(TVIVID

205191F)

STATEMENT OF

LIMITED

WARRANTY

TeleVideo

Systems,

Inc.

("TeleVideo

U)

warrants

to

its

distributors,

systems

houses,

end

users,

and

OEMs

("Buyer"),

that

products

manufactured

by

TeleVideo

are

free

from

defects

in

materials

and

workmanship.

TeleVideo's

obligations

under

this

warranty

are

limited

to

repairing

or

replacing,

at

TeleVideo's

option,

the

part

or

parts

of

the

products

which

prove

defective

in

material

or

workmanship

within

IS

months

after

shipment

by

TeleVideo.

Buyer

must

pass

along

to

its

initial

customer

or

user

("Customer")

a

minimum

of

12

months'

coverage

within

this

IS-month

warranty

period,

provided

that

Buyer

gives

TeleVideo

prompt

notice

of

any

defect

and

satisfactory

proof

thereof.

Products

may

be

returned

to

Buyer

only

after

a

Return

Material

Authorization

number

(URMA")

has

been

obtained

from

TeleVideo

by

telephone

or

in

writing.

Buyer

will

prepay

all

freight

charges

to

return

any

products

to

the

repair

facility

designated

by

TeleVideo

and

include

the

RMA

number

on

the

shipping

container.

TeleVideo

will,

at

its

option,

either

repair

the

defective

products

or

parts

or

deliver

replacements

for

defective

products

or

parts

on

an

exchange

basis

to

Buyer,

freight

prepaid

to

the

Buyer.

Products

returned

to

Te1eVideo

under

this

warranty

will

become

the

property

of

TeleVideo.

With

respect

to

any

product

or

part

thereof

not

manufactured

by

TeleVideo,

only

the

warranty,

if

any,

given

by

the

manufacturer

thereof,

applies.

Exclusions

This

limited

warranty

does

not

cover

losses

or

damage

which

occur

in

shipment

to

or

from

Buyer,

or

are

due

to,

(1)

improper

installation

or

maintenance,

misuse,

neglect,

or

any

cause

other

than

ordinary

commercial

or

industrial

application,

or

(2)

adjustment,

repair,

or

modifications

by

other

than

TeleVideo-authorized

personnel,

or

(3)

improper

environment,

excessive

or

inadequate

heating

or

air

conditioning

and

electrical

power

failures,

surges,

or

other

irregularities,

or

(4)

any

statements

made

about

TeleVideo's

products

by

salesmen,

dealers,

distributors

or

agents,

unless

confirmed

in

writing

by

a

TeleVideo

officer.

If

the

firmware

or

hardware

is

altered

or

modified

by

the

Buyer,

this

firmware

and

hardware

is

not

covered

within

this

limited

warranty

and

the

Buyer

bears

sole

responsibility

and

liability

for

that

firmware

and

hardware.

1-3

THE

FOREGOING TELEVIDEO

LIMITED

WARRANTY

IS

IN

LIEU

OF

ALL

OTHER WARRANTIES,

WHETHER

ORAL,

WRITTEN, EXPRESSED,

IMPLIED,

OR

STATUTORY.

IMPLIED

WARRANTIES

OF

MERCHANTABILITY

AND

FITNESS

FOR

A PARTICULAR PURPOSE

DO

NOT

APPLY. TELEVIDEO'S

WARRANTY

OBLIGATIONS

AND

DISTRIBUTOR'S REMEDIES

HEREUNDER

ARE

SOLELY

AND

EXCLUSIVELY

AS

STATED HEREIN.

TELEVIDEO'S

LIABILITY,

WHETHER

BASED

ON

CONTRACT, TORT,

WARRANTY,

STRICT

LIABILITY,

OR

ANY

OTHER

THEORY,

SHALL

NOT

EXCEED

THE

PRICE

OF THE

INDIVIDUAL UNIT

WHOSE

DEFECT

OR

DAMAGE

IS

THE

BASIS

OF

THE

CLAIM.

IN

NO

EVENT

SHALL TELEVIDEO

BE

LIABLE

FOR

ANY

LOSS

OF

PROFITS,

LOSS

OF

USE

OF

FACILITIES

OR

EQUIPMENT,

OR

OTHER

INDIRECT, INCIDENTAL,

OR

CONSEQUENTIAL

DAMAGES.

SERVICE

OUT

OF

WARRANTY

If

your

terminal

is

out

of

waranty

when

it

needs

service,

follow

the

same

procedure

to

receive

an

RMA.

You

will

be

responsible

for

all

shipping

costs.

If

your

company

requires

a

purchase

order

for

out-of-warranty

repairs,

let

us

know

the

purchase

order

number

when

you

call

in.

One

purchase

order

may

cover

several

repairs,

but

we

will

give

each

unit

its

own

individual

RMA

number.

This

allows

us

to

return

each

unit

quickly

without

holding

up

the

entire

purchase

order

for

one

unit.

EXTENDED

WARRANTY

TeleVideo

offers

an

Extended

Warranty

Agreement,

which

extends

the

terms

of

the

above-stated

Limited

Warranty

for

an

additional

year.

To

take

advantage

of

this

Extended

Warranty,

you

must

sign

the

Extended

Warranty

Agreement

and

return

it;

together

with

full

payment,

to

TeleVideo

before

the

Limited

Warranty

expires.

Shippng

charges

are

not

included

in

the

Extended

Warranty.

This

is

normally

the

only

expense

you

incur.

Please

contact

the

Customer

Service

department

or

your

sales

representative

for

details.

To

renew

the

Extended

Warranty

for

another

year,

follow

the

same

procedure.

1-4

ORDERING

SPARE

PARTS

Parts

may

be

ordered

by

telephone,

written

p'urcnase

order

or

telex,

or

through

Regional

Sales

Office

electronic

bulletin

board

systems.

You

may

direct

orders

to

the

TeleVideo

Regional

Sales

Office

in

your

area

or

to

the

TeleVideo

Corporate

Spare

Parts

Order

Ent~y

Department

at

the

following

address:

Te1eVideo

Systems,

Inc.

550

E.

Brokaw

Road

P.O.

Box

6602

San

Jose,

CA

95150-6602

or

call

San

\.Jose:

CA

Watts:

u.s.

Watts:

Telex:

Fax:

TWX

408-971-0255

800-821-3774

800-521-4897

474-5041

408-734-1927

or

408-998-2092

910-338-7633

All

orders

are

shipped

F.O.B.

our

designated

site.

2-1

PCB

ASSEMBLY

CONTROL

BOARD

Part

Number

Description

Location

120302-00

IC

NE555

TIMER 1\46

120358-00

IC

2114ICB

RAM

150ns.

A41,

42

180000-16

IC

ROM

CHAR

GEN

910

A31

120492-00

IC

6116

RAM

2Kx8

150ns.

1\47

120496-00

IC

6502A

MICROPROCESSOR A60

123443-00

IC

CRT

CNTRL

6845R

A59

120530-00

IC

SY6551A/l

2-MHz SYN/AMI

1\32,

33

120242-00

IC

74LSOO

A3,

28,

55

120416-00

IC

74LS02

A4

120246-00

IC

74S04

1\16

120248-00

IC

74LS04

A27,

35

120348-00

IC

7406

A5

120252-00

IC

74LS08

1\10,

13,

18,

54

120254-00

IC

74LSI0

1\2

120258-00

IC

74LS32

All,

12,

14,

23,

26,

36,

38

120266-00

IC

74LS74

1\1, 6

120268-00

IC

74LS86

A15

120410-00

IC

74LS138

A29

120272-00

IC

74LS139

1\37

120274-00

IC

74LS157

1\56-58

120276-00

IC

74LS163

1\24

120278-00

IC

74LS166

1\30

120280-00

IC

74LS173

A19-21

120282-00

IC

74LS174

1\22

120442-00

IC

74LS244

A43,

51-53

120362-00

IC

74LS245,N8T245N

A40

120376-00

IC

74LS273

A44,

45

120290-00

IC

74LS374

A39

120292-00

IC

75188

4X

LINE

DRVR

A25,

34

120294-00

IC

75189A

4X

LINE

RCVR

A9,

17

120315-00

RES CF

1M

OHM

1/4W

5%

R19

120335-00

RES

CF

22

OHM

1/4W

5%

R2

120511-00

RES

CF

68

OHM

1/4W

5%

R3

120513-00

RES

CF

270

OHM

1/4W

5%

R8

120515-00

RES CF

330

OHM

1/4W

5%

R15,

24-26

120517-00

RES

CF

470

OHM

1/4W

5%

R13

120317-00

RES CF

750

OHM

1/4W

5%

R7,

12

120521-00

RES CF

1000

OHM

1/4W

5%

R4,

5,

9

120523-00

RES

CF

1800

OHM

1/4W

5%

R14

120531-00

RES

CF

4700

OHM

1/4W

5%

Rl,

10, 11,

17,

23,

27

120337-00

RES

CF

47K

OHM

1/4W

5%

R21

120323-00

RES

CF 51K

OHM

1/4W

5%

R16

120413-00

RES

PK

4.7K

OHM

lOP

SIP

RPl-5

120287-00

CA.P

CER

.01uF

16V

20%

C2,

5,

7,

14-17,

19,

23B,

24-26, 28-30,

33-40,

43-46,

48,

49,

52-55,

60

120289-00

CAP

MONO

.01uF

50V

10%

C6,

27,

47,

50,

51

PCB ASSEMBLY

CONTROL

BOARD

Part

Number

120279-00

120275-00

120273-00

120257-00

120241-00

120291-00

120271-00

120475-00

120527-00

120455-00

120986-02

120986-05

120968-00

120984-01

120984-02

120984-04

120984-00

120979-00

120988-02

180000-31

180000-33

Description

CAP

ELEC

luF

16V

10%

CAP

TANT

4.7uF

16V

10%

CAP

ELEC

10uF

l6V

20%

CAP

ELEC

22uF

l5V

20%

C~P

MICA

10pF

50V

5%

CAP

CER

330pF

50V

20%

CAP

TANT

10uF

25V

10%

DIODE

lN914

RES

CF

3300

OHM

1/4W

5%

TRAN

2N440l

NPN/SILICON

CRY

1.8432-MHz

CRY

l3.6080-MHz

SWITCH

lOP

DIP/20P

SIDE

ADJ

SOCKET

24P

IC

DIP

SOCKET

40P

IC

DIP

SOCKET

28P

IC

DIP

SOCKET

l8P

IC

DIP

CONN

4P

MOD

JK

RJll

CONN

4P

HDR

WT

(SP

W/#2P

OUT)

IC

EPROM

SYS

PROG

925

IC

EPROM

SYS

PROG

925

Location

C4

Cl,

3

C41,

61

C56-58

C18

C8-13,

20-23,

62-70

C42

CRl,

2

R20

Ql,

2

Yl

OPT,

Y5

OPT

Y2

Sl-3

A31-47-50

A59,

60

A32,

33

A41,

42

PI

P2,

5

}\50

A49

PCB

ASSEMBLY

CONTROL

BOARD

GATE

ARRAY

Part

Number

Description

Location

120496-00

IC

6502~

MICROPROCESSOR

All

123443-00

IC

SRT

CRT

CNTRL

6845R

A28

120530-00

IC

SY6551A/1

2-MHz

SYN/AMI

A4,

5

130181-00

IC

GATE

ARRAY

TELEPRT C

A39

180000-31

IC

EPROM

SYS

PROG

925

1\14

180000-33

IC

EPROM

SYS

PROG

925

A15

120492-00

IC

6116

STAT

RAM

150ns.

A32

180000-16

IC

ROM

CHAR

GEN

910

A17

120358-00

IC

2114-ICB

RAM

150ns.

A9,

10

120242-00

IC

74LSOO 1\35

120246-00

IC

74S04

A40

120248-00

IC

74LS04

A36

120252-00

IC

74LS08

A8,

37

120258-00

IC

74LS32

A24,

30,

42,

43

120266-00

IC

74LS74

A7

120272-00

IC

74LS139

A38

120274-00

IC

74LS157

A20-22

120278-00

IC

74LS166

A12

120290-00

IC

74LS374

A18

120292-00

IC

75188N

4X

LINE

DRIVER

1\16,

23

120294-00

IC

75189A

4X

LINE

RECEIVER 1\1, 2

120302-00

IC

NE555

TIMER

A6

120348-00

IC

7406

A31

120362-00

IC

74LS245,

N8T245N

A19

120376-00

IC

74LS273

A26,

27

120410-00

IC

74LS138

A13

120442-00

IC

74LS244

8X

BFR/L

DRVR/L

RCV

A3,

29,

34,

41

120276-00

IC

74LS163

4-BIT

CNTR

1\25

120345-00

RES CF

33

OHM

1/4W

5%

R9

120513-00

RES CF

270

OHM

1/4W

5%

R5

120515-00

RES CF

330

OHM

1/4W

5%

R22-24,

27

120517-00

RES CF

470

OHM

1/4W

5%

R28

120521-00

RES CF

1000

OHM

1/4W

5%

R7,

11,

16

120523-00

RES CF

1800

OHM

1/4W

5%

R26

120527-00

RES CF

3300

OHM

1/4W

5%

R18

120531-00

RES CF

4700

OHM

1/4W

5%

R3,

4,

10,

12-15,

21

120315-00

RES CF

1M

OHM

1/4W

5%

R20

120317-00

RES CF

750

OHM

1/4W

5%

R6,

25

120323-00

RES CF 51K

OHM

1/4W

5%

R2

120335-00

RES CF

22

OHM

1/4W

5%

Rl

120337-00

RES CF

47K

OHM

1/4W

5%

R19

120341-00

RES CF

10K

OHM

1/4W

5%

R8

120413-00

RES

PK

4.7K

OHM

lOP

SIP

RPI-4

120241-00

CAP

MICA

10pF

50V

5%

C31

120271-00

CAP

TANT

10uF

25V

10%

C32

121969-00

C1\P

MYLAR

.001uF

50V

(OPC)

C34

PCB ASSEMBLY

CONTROL

BOARD

GATE

ARRAY

Part

Number

Description

Location

120251-00

CAP

MICA

150pF

500V

1%

C35

120257-00

CAP

ELEC

22uF

16V

+20%

C24-26

120273-00

CAP

ELEC

10uF

16V

20%

C28,

30

120275-00

CAP

TANT

4.7uF

16V

10%

C18

120279-00

CAP

ELEC

1uF

16V

10%

C18A,

33

120287-00

CAP

CER

.01uF

16V

20%

UNMARKED

C20

120289-00

CAP

MONO

.01uF

50V

10%

C27

120293-00

CAP

MONO

330pF

100V

20%

Cl-17,

19

UNMARKED

120301-00

CAP

CER

.1uF

50V

10%

C29

120475-00

DIODE

1N914

CRl,

2

120455-00

TRAN

2N4401

NPN/SI

Ql,

2

120986-02

CRY

1.8432-MHz

Y1

(OPT.

) ,

Y3

120986-05

CRY

13.6080-MHz

Y2

121754-00

TAPE

FOAH

DBL/S

1/16

x

1/4

11

WD

Yl

(OPT.)

,

Y2,

Y3

120968-00

SWITCH

lOP

DIP/20P

SIDE

ADJ

SW-1-3

120984-00

SOCKET

18P

IC

DIP

XA9,

10

120984-01

SOCKET

24P

IC

DIP

XA14,

15,

17,

32,

33

120984-02

SOCKET

40P

IC

DIP

XAl1,

28,

29

120984-04

SOCKET

28P

IC

DIP

XA4, 5

121746-01

SOCKET

16P

IC

DIP

LO

PROF XP6

121653-00

CONN

25P

D-SUB

MTL

P3,

4

120979-00

CONN

4P

MOD

JK

RJll

PI

120988-02

CONN

4P

HDR

WT

(5PW/#2P

OUT)

P2,

5

2-6

PCB

ASSEMBLY

VIDEO

MONITOR

Part

Number

120257-00

120273-00

120275-00

120289-00

120305-00

120309-00

120321-00

120531-00

120337-00

120339-00

120377-00

120383-00

120387-00

120391-00

120395-00

120513-00

120515-00

120517-00

120531-00

121771-00

121776-00

121777-00

121778-00

121779-00

121801-00

121802-00

121803-00

121860-00

121862-00

121863-00

121864-00

121959-00

121960-00

120261-00

121961-00

121962-00

121967-00

121968-00

121970-00

121971-00

121970-00

121973-00

Description

CAP

ELEC

22uF

16V

+20%

CAP

ELEC

10uF

16V

20%

CAP

TANT

4.7uF

16V

10%

CAP

MONO

.01uF

50V

10%

CAP

MONO

.039uF

50V

5%

CAP

CER

1.0pF

1KV

SG

RES

CF lOOK

OHM

1/4W

5%

RES

CF

4.7K

OHM

1/4W

5%

Location

C203

C201

C202,

C503

C307

SG501

R202

R208

204

RES

CF

47K

OHM

1/4W

5%

R209,

505

RES

CF

150

OHM

1/4W

5%

R211

RES

CF

47

OHM

1/4W

+/-5%

R501

RES CF

2.7K

OHM

1/4W

+/-5%

RES

CF

2.2K

OHM

1/4W

5%

RES

CF

6.8K

OHM

1/4W

5%

RES CF 56K

OHM

1/4W

5%

RES

CF

270

OHM

1/4W

5%

RES

CF

330

OHM

1/4W

5%

RES

CF

470

OHM

1/4W

5%

RES

CF

4700

OHM

1/4W

5%

RES

WW

0.6

OHM

2W

RES

CF

90

OHM

1/4W

POT

TRIM lOOK

SIDE

A.DJ

PCMT

POT

TRIM VERTICAL

LINEARITY

POT

TRIM

5K

OHM

SI

DEADJ

PCMT

A.

POT

FOCUS

2M

OHM

POT

OCNTRAST

THERMISTOR

OPC

lK

OHM

RES

CF

220

OHM

1/2W

5%

RES

CF

820

OHM

1/2W

5%

RES

CF

1.5K

OHM

1/2W

5%

RES

CF

10K

OHM

1/2W

5%

CAP

CER

220pF

50V

CAP

ELEC

100uF

10V

R201,

R203

R207

R504

R214

R210

R301

R208

R205

R204,

212,

213

R502

SFR1,

4

SFR2

SFR3

VR2

VR1

TH201

R506

R206,

503

R507,

509

R508

C501

+/-20%

C205

CAP

22uF

25V

C206

CAP

ELEC

22uF

100V

C505

CAP

ELEC

220uF

10V

(OPC)

C207

CAP

ELEC

4.7uF

16V

(OPC)

C301

CA.P

MYLAR

.0068uF

200V

(ope)

CAP

MYLAR

.01uF

50V

(OPC)

CAP

MYLAR

.47UF

50V

(ope)

CAP

MYLAR

.01uF

50V

CAP

MYLAR

.1uF

600V

(ope)

C303

C302

C208

C502

C504

PCB

ASSEMBLY

VIDEO

MONITOR

Part

Number

121972-00

121975-00

121993-00

122008-00

122009-00

122010-00

122012-00

130745-00

122018-00

122017-00

120475-00

122022-00

122136-00

122800-00

130745-00

130116-00

120455-00

120465-00

121997-00

122021-00

120455-00

120473-00

Description

CAP

MYLAR

.47uF

50V

(OPC)

CAP

MYLAR

.47uF

400V

(OPC)

CAP

ELEC

220uF

16V

YOKE

DEFLECT

W/CONN

KYS-00060

COIL LINEARITY

NON

ADJ

LC-36

COIL INDCTR

27uF

.3PIE

TNFR HORIZ

DR

HDT-19

TNFR

FLYBACK

KYS-20708

DIODE

1N920/KD8513A

DIODE

DS113A/MR1-1000

(DAMPER)

DIODE

1N914

DIODE

1N4004

MOT

COIL LINEARITY ADJ

IC-014631

CAP

ELEC

16V

(NON-P)

TNFR

FLYBACK

KYS-20708

TRAN

KTC

2229Y

TRAN

2N4401/2SC1166

TRAN

2N3904/KTC1815

TRAN

2N6121/2SC1173

TRAN

2N6124/2SA473

TRAN

2N4401/2SC1166

TRAN

2SC2373

2-~8

Location

C506

C304

C305

L202

L201

L302

T301

T302

D201,

202

301

D302

D501

D502

L201

C306

T302

Q103

Q201

Q202

Q203

Q204

Q301

Q302

PCB

ASSEMBLY

POWER

SUPPLY

Part

Number

Description

Location

121982-00

CAP

470uF

35V (OPC)

Cl16

121981-00

CAP

TANT

.33uF

35V (OPC)

Cl14,

115

121:966-00

C~P

ELEC

4700uF

16V

(OPC)

Cl17

121965-00

C~P

EIJEC

3300uF

35V

(OPC)

Cl13

121964-00

CAP

ELEC

22uF

160V

C120

121963-00

CAP

ELEC

100uF

160V

C119

120287-00

CAP

CER

.01uF

16V

20%

C101-109

122006-00

DIODE

IN5391/DS135D

DI01,

102,

109,

113,

114

130098-00

DIODE BY251 3A

200V

0103-108

122016-00

DIODE

1N759A/RD12EB

ZENER

0111,

112

121931-00

FUSE

3A

125V

3AG

FI02,

103

121268-00

VOLT

REG

LAS

1605

2A/5V

IC2

121269-00

VOLT

REG

LAS

16CB

2A/13.8V

GEN

IC1

121766-00

RES

CF

390

OHM

1/2W

5%

RI02

121774-00

RES

CF

3.9K

OHM

1/4W

RI07

121373-00

RES

CF 27K

OHM

1/4W

+/-5%

R108

120531-00

RES

CF

4700

OHM

1/4W

5%

R105,

106

120393-00

RES

CF 30K

OHM

1/4W

5%

RllO

120383

....

00

RES

CF

2.7K

OHM

1/4W

+/-5%

RI09

121779-00

POT

TRIM

5K

OHM

SIDE

ADJ

PCMT

SFR3

120471-00

TRAN

2N5551

NPN/HIGH

VOLTAGE

QI03

120467-00

TR~N

KTC1627/MPSA06

NPN/SIL

Q102

2-9

DETACHABLE

KEYCAPS

Sculptured

Description

Printed

Blank

Degree

1X1

LG

BLANK

121616-00

0

1X1

LG

NO

SCROLL/SETUP

120887-00

0

1X1

LG

F1

120850-00

0

1X1

LG

F2

120851-00

0

1X1

LG

F3

120852-00

0

1X1

LG

F4

120853-00

0

1X1

LG

F5

120854-00

0

lX1

LG

F6

120855-00

0

1X1

LG

F7

120856-00

0

1X1

LG

F8

120857-00

0

1X1

LG

F9

120858-00

0

lX1

LG

FlO

120859-00

0

1X1

LG

F11

120860-00

0

1X1

LG

CHAR

INSERT

120861-00

0

1X1

LG

CHAR

DELETE

120862-00

0

lX1

LG

LINE INSERT

120863-00

0

1X1

LG

LINE

DELETE

120864-00

0

lX1

DG

BLANK

121617-00

+14

DG

ESC/LOC ESC

120842-00

+14

1X1

DG

1/1

120778-00

+14

lXl

DG

2/@

120779-00

+14

1X1

DG

3/#

120780-00

+14

IX1

DG

4/$

120781-00

+14

1X1

DG

5/%

120782-00

+14

1X1

DG

6/"-

120783-00

+14

lXl

DG

7/&

120784-00

+14

IX1

DG

8/*

120785-00

+14

lX1

DG

9/(

120786-00

+14

lX1

DG

0/)

120787-00

+14

1Xl

DG

-/

120788-00

+14

lXl

DG

=/+

120789-00

+14

1X1

DG

'/-

120790-00

lX1

DG

BACK

SPACE

120792-00

+14

1X1.5

DG

TAB

120845-00

+7

1X1.5

DG

BLANK

121618-01

+7

lX1

DG

BLANK

121618-00

+7

1X1

DG

Q

120806-00

+7

1X1

DG

W

120807-00

+7

lX1

DG

E

120808-00

+7

1X1

DG

R

120809-00

+7

1X1

DG

T

120810-00

+7

1X1

DG

Y

120811-00

+7

IX1

DG

U

120812-00

+7

1Xl

DG

I

120813-00

+7

1X1

DG

0

120814-00

+7

1X1

DG

P

120815-00

+7

1X1

DG

[/J

120816-00

+7

1Xl.S

DG

LINE FEED

120844-00

+7

1X1.25

LG

CLEA.R

SPACE

120896-00

+7

lX1

LG

CTRL

120869-00

0

~.~,

,

DETACHABLE

KEYCAPS

Sculptured

Description

Printed

Blank

Degree

lXl

DG

ALPHA

LOCK

120818-00

0

lXl

DG

A

120819-00

0

lXl

DG

S

120820-00

0

lXl

DG

D

120821-00

0

lXl

DG

BLANK

121616-01

0

lXl

DG

F

120822-00

0

lXl

DG

G

120823-00

0

lXl

DG

H

120824-00

0

lXl

DG

J

120825-00

0

lXl

DG

K

120826-00

0

lXl

DG

L

120827-00

0

lXl

DG

./ .

, .

120828-00

0

IXI

DG

'/"

120829-00

0

LG

ilL"

RETURN

120894-00

lXl

LG

BREAK

120870-00

0

lXl

DG

BACK

TAB

120817-00

-7

lXl.5

LG

SHIFT

120847-00

-7

lXl

DG

Z

120830-00

-7

IXI

DG

X

120831-00

-7

lXl

DG

C

120832-00

-7

lXl

DG

V

120833-00

-7

lXl

DG

B

120834-00

-7

lXl

DG

N

120835-00

-7

lXl

DG

M

120836-00

-7

lXl

DG

BLANK

121619-00

-7

lXl

DG

,/<

120837-00

-7

lXl

DG

./>

120838-00

-7

lXl

DG

//?

120839-00

-7

lXl

DG

{/I

120840-00

lXl

LG

DELETE

120871-00

-7

IXI

LG

PRINT

(LP)

120893-00

0

lXl

LG

FUNCT

(LP)

120890-00

a

lX8

DG

SPACE

BAR

120897-00

lXl

LG

HOME

(LP)

120891-00

0

IX1

LG

CURSOR

ARROW

(T.JP)

120892-00

0

lXl

LG

LINE

ERASE

120865-00

0

lXl

LG

PAGE

ERASE

120866-00

0

lXl

LG

SEND

120885-00

0

lXl

DG

7

120799-00

0

lXl

DG

8

120800-00

0

lXl

DG

9

120801-00

0

lXl

DG

4

120796-00

0

IXI

DG

5

120797-00

0

lXl

DG

6

120798-00

0

lXl

DG

1

120793-00

0

lXl

DG

2

120794-00

0

lXl

DG

3

120795-00

0

lXl

DG

,

120804-00

0

IXI

DG

0

120802-00

0

IXl

DG

.

120805-00

0

TeleVideo 925 User manual

Popular Touch Terminal manuals by other brands