Mattel Intellivision ii 5872 User manual

•

(\

-

•

MODEL 5872

MATTEL ELECTRONICS

5150 Rosecrans Avenue

Hawthorne.

California

90250

•

....

,

•

~

•

,

•

-

•

-

I

\

•

TABLE OF CONTENTS

-.

,_

. .

'.

.

.'

1.

SPECiFiCATIONS·,;

.........................................

Page 1

• •

..

2.

OPERATING INSTRUCTIONS

................................

Page 2

3.

SYSTEM DESCRIPTION AND OPERATION

...................

Page 5

• •

4.

SYSTEM

TESTING.

. .. .. .. . . . . . . . . . . . . .... •.. .... . . . . . . . . . .

..

Page 9

. ~

..'

. ..

5.

DISASSEMBLY PROCEDURE

................................

Page 9

6.

PRELIMINARY CHECKLIST

.................................

Page

10

7.

TROUBLESHOOTING

......................................

Page

11

_

.,

8.

ADJUSTMENTS

............................................

Page

20

PARTS LIST ............................................................................................... Page

21

.

10.

SCHEMATIC DIAGRAM

.....................................

Page

25

•

.

..

~

.

.-

• •

-.

•

- ,

---

'

--,

•

·. ".

.

..

•

• • -

...

•

. .

· .

•

. .

• •

•

..

• •

..

• •

•• •

•

--

•

• SPECIFICATIONS

MICROPROCESSOR (CPU) -General Instrument CP-1610 16-bit processor.

MEMORY -7K internal ROM, RAM, and 1/0 structures, remaining 64K address space available

for

external programs.

CONTROLS -

Two

removable hand controllers:

12-bulton

numeric keypad,

four

action buttons,

16-position directional movement disc.

SOUND -Programmable sound generator (PSG) capable of

producing

three simultaneous sound

patterns.

COLOR

REPRODUCTION

-

16

different

color

hues:

Black

Blue

Red

Tan

Dark Green

Light

Green

Yellow

White

Gray

Cyan

Orange

Brown

Magenta

Light

Blue

Yellow-Green

Purple

VIDEO

RESOLUTION

-

192

vertical x 160 horizontal

picture

elements.

VOLTAGE

REQUIREMENTS

-120VAC 60 Hz

DIMENSIONS: (WxDxH) -10" x

6'14'

x

3"

WEIGHT -

Console

Assembly with Packing Material and Accessories -

4.7

lb.

Console Assembly alone - 2.3 lb.

ACCESSORIES -Antenna Switch Box,

Switch

Box

Cable

(15 feet), Wall-Mounted

Power

Trans-

former, and Owner's Manual.

•

-1-

•

!

·

,

•

OPERATING

INSTRUCTIONS

•

A.

Connection to the

color

television receiver

•

1.

Connect the tWin lead from the antenna

switchbox to the VHF antenna input

of

the television receiver. Figure 1 illus-

trates the proper connection when

twin

lead

is

used from antenna system;

Figure 2 illustrates the proper connec-

tion when coaxial cable

is

used.

If

the

TV receiver has only

75

ohm coaxial

input, then a 300

to

75

ohm adaptor

must be used.

2.

Connect

the

RF

cable from the

RF

f"""'\

output

jack on the Master

Component.

~

to the jack marked GAME on the

~

antenna switch box. Place switch box

,

FLAT

"TWIN LEAD"

WIRE

FROM

TV

ANTENNA

OR

ANTENNA

SYSTEM

to the GAME position.

3.

Set the television receiver to channel

3

or

4,

whichever

is

not used in

your

broadcast area. Place the

RF

channel

select switch (located at the back

of

the Master Component) to correspond

to the channel set on the television.

TO

MASTER

__

COMPONENT

I

SWITCH

BOX

TYPICAL

UHFNHF

TV

RECEIVER

ANTENNA

TERMINALS

•

NOTE:

NO

CHANGE

TO

YOUR

EXISTING

UHF

ANTENNA

CONNECTION

IS

REOUIRED.

VHF

ANTENNA

TERMINAL

FOR

COAX

TYPE

OF

ANTENNA

WIRE

ROUND

VHF

.

ANTENNA

OR

SYSTEM

WIRE

ROUNO"COAX"TO

FLAT

"TWIN LEAD"

BALUN

CONVERTER'

AVAILABLE

AT

MOST

ELECTRONICS

PARTS

STORES

.

Figure

1

TO

MASTER

__

COMPONENT

'

NOTE:

NO

CHANGE

TO

YOUR

EXISTING

UHF

ANTENNA

CONNECTION

IS

REOUIRED.

Figure

2

-2-

TYPICAL UKFNHF

TV

RECEIVER

ANTENNA

TERMINALS

ALTERNATE

VHF

ANTENNA

TERMINAL

•

,r--

.

,

•

_ _

._

_ '

__

________

__

____

_

._0"

•

B. Power Connection

1. Plug the transformer

unit

into

a120

Volt

60

Hz wall outlet.

2. Insert the other end

of

the power cord

into the rear-panel power socket.

C. Gameplay

1. Turn TV set ON.

2. Insert the game cartridge in the slot

located on the

right

side

of

the Master

Component (Figure 3).

3.

Remove theHand

Controllers

from

their

holder on the Master Component.

4.

Depress the ON/OFF/RESET switch

button to turn on theMasterComponent.

5.

RESET: Tapping the ON/OFF/RESET

button

will

cause the

game

being played

to be reset to the

title

page. POWER

OFF:

To

turn the

MasterComponent

off,

depress the ON/OFF/RESET button

for

3 seconds and then release it.

D. Hand Controllers

The Master

Component

is equipped with two

Hand Controllers (each Hand

Controller

may

be

unplugged where the coiled cord meets the

Master Component.) There are

12

keys on the

keypad. These are used

for

feeding data

into

the Master Component. •

With each cartridge, there are2 overlays

which

fit over the keypads on the 2

Hand

Controllers.

These overlays are keyed

to

the particular

game being played and determine

how

the

keys on the keypad relate

to

the cartridge.

Slip the overlay under the keypad frame.

There are 2 action buttons

on

both

sides

of

the

Hand Controllers.

The

upper

buttons, one

on

each side, perform the same

function

for

the

convenience

of

either

right-

or

left-handed

players. The

lower

buttons perform varying

functions.

The

functions

of

all the buttons

depend on the cartridge being used and are

different

for

each cartridge overlay.

The disc at the base

of

the

Hand

Controller

is a directional control

for

those cartridges

in which direction

is

a factor. There are

16

directional positions on the disc.

The

direction

of the disc corresponds

to

direction

of the

television screen. UP on the disc (toward the

-3-

keypad) is UP on the screen, etc. For

further

instructions, refer

to

the individual

game

cartridges.

To

operate the directional disc, depress the

outer

edge

of

the

disc

with

one fingerand rotate

it around the edge

to

change the

direction

on

the object

you

are moving. You have the

ability

to move the

object

in any desired direction.

The keypad buttons and directional

disc

cannot be operated simultaneously. However,

the action buttons and directional disc may

be operated simultaneously.

When returning

the

Hand

Controller

to

the

Master Component,

coil

the cable beneath

it

in

the cradle.

To

avoid permanently overstretch-

ing the coiled cables, they should notbe pulled

out

to their extreme length.

E.

Intermission and

Time

Out

1.

If,

for

any reason, you wish to

interrupt

your

game,

you

may use the Inter-

mission Code. Removing the game

overlay and pressing 1 and 9

simul-

taneously

on

either Hand

Controller

will cause the television screen

to

go

blank and game play

to

stop.

To

resume

game play,

simply

depress any key on

either

Hand

Controller

.

2.

If

NO

functions

on either

Hand

Con-

troller

are activated for

approximately

5 minutes, the television screen

WILL

AUTOMATICALLY

GO

BLANK and

the

game play

will

stop.

To

resume

game

play,

simply

depress any key on either

Hand

Controller

. The purpose

of

this

unique

feature is

to

eliminate the

possibility

of

a permanent playfield

image

being

imprinted

on the tele-

vision screen.

NOTICE

TO

PROJECTION TV OWNERS:

Operating the

Master

Component

for

extended

periods

of

time

on

a

projection

TV system may

cause the

stationary

game objects to become

permanently

imprinted

on

the

projection

TV

picture

tube(s).

This

is especially true when

the brightness and contrast

controls

are set

extremely

high

for

game viewing. Please

observe the

following

precautions to

minimize

the chances

of

a game image being

imprinted

on the screen:

•

,

j.

,

o TRANSFORMER

UNIT

(Plugs

into

AC

Wall

Outlet)

POWER PLUG

(Plug

into

rear

01

Master

Component)

HAND

CONTROLLER

ANTENNA SWITCH BOX

(To

be

located

on

rear

of

TV)

ON/OFF/RESET

BUTTON

0)

Figure

3 -

MATTEL

INTELLIVIS

COLOR TELEVISION

•

MASTER

COMPONENT GAME

CARTRIDGE

o

ASTER

COMPONENT

(Wiring

Diagram)

TV CONNECTION

I

TO

SWITCH BOX

•

o

I

•

-

------

-------

-------------------.

-,

..-

..

~

..

"

•

1.

Always use lowest possible

brightness

and

contrast

control

settings

during

game operation.

2.

Games

containing

stationary

white

or

light

colored

objects

should

not

be

played

for

extended periods

of

time

.

3.

FollOw

your

projection

TV owner's

manual

for

proper

viewing

conditions

for

programming

.

SYSTEM DESCRIPTION AND OPERATION

The Intellivision II system consists

of

a Master

Component

with two detachable hand

con-

trollers, an antenna

switch

box, RF

connecting

cable and a

wall-mounted

transformer

unit.

The Master

Component

operates in

conjunc-

tion with a

color

television set

and

an

I

ntelli-

vision game cartridge. Peripheral

equipment

(such

as

the

Intellivoice'·

Voice Synthesis

unit)

may also

be

used with the

Intellivision

II

system.

The Master

Component

system is based on

two processors. One

is

a

16

bit

microprocessor

(CPU) that computes the game

action

against

the stored program rules.

The

second

is the

Standard Television Interface

Circuit

(STIC)

that interprets a condensed

memory

area

and

uses this to generate a

color

video

signal.

The video signal

is

applied to theRF

modulator

to provide the television signal.

The

user's

color

television receiver

is

used

for

the video

display.

User interaction

with

thegame

programming

is

accomplished by the

inputting

of

numerical

control

and

directional

information

through

the hand controllers.

The audio

is

accomplished

by

using

a

pro-

grammable sound

generator

(PSG)

integrated

circuit

(IC) which generates the

audio

signal

to drive the RF

modulator.

The

user's tele-

vision receiver

is

used

for

the

audio

output.

CONSOLE ASSEMBLY.

The

ConsoleAssembly

contains all electrical

circuitry

necessary

for

recall and processing

of

the

program

data

stored in the game cartridge. Integral

with

the Console Assembly arethe

ON/OFF/RESET

_ . _

___

.__

_

__

•

__

• • _ A

-5-

switch,

power

supply

board

assembly,

logic

board assembly,

and

two hand

controller

assemblies. Recessed

compartments

at the

top

of

the console are

provided

for

storage

of the

hand

controllers

and cables. A slot in

the

right-hand

side

of

the

Console

Assembly

is the

insertion

port

for

the game cartridge.

The

ON/OFF/RESET

switch

is

located

at the

lower

left-hand

corner

of

the

Console

Assembly.

A.

ON/OFF/RESET

SWITCH,

This

switch

has

three

main

functions: When the Master

Com-

ponent

is off,

depressing

this

switch

will

apply

power

to

the

unit. When the Master

Component

is on,

quickly

tapping

this

switch

will reset

the

game

in

play. Finally, when the

Master

Component

is on,

holding

this

switch

down

for

about

3

seconds

and then releasing

it will

turn

power

to

the

unit

off.

B. POWER SUPPLY

BOARD

ASSEMBLY.

The

Power

Supply

Board

converts the

AC

voltage

from the

wall-mounted

transformer

unit

into

the various DC voltages necessary to operate

the

Master

Component.

Additional

circuitry

on

the

Power

Supply

Board

senses the activation

of

the

ON/OFF/RESET

switch

and causes the

Master

Component

to

turn

on

or

off. Electrical

connection

to

the

Logic

Board

is via a 10-pin

connector.

The

Power

Supply

Board

utilizes a

switching

regulator

design

to

accurately

and

con-

tinuously

sense the

current

being drawn by

the

Master

Component.

In this design, the

incoming

voltage

is

rectified

and

then

con-

verted

into

a

square

wave.

The

switching

•

---------------------------

_

..

._

..

.

..

.

regulator senses the current drain and varies

the duty cycle (on time

of

the square wave

compared

to

the total period) of the square

wave.

This assures a constant voltage during

varying levels

of

power consumption.

C.

LOGIC BOARD ASSEMBLY. The

Logic

Board Assembly consists essentially

of

.

12

integrated circuits and their associated com-

ponents, a channel select switch, and an

RF

modulator, all

of

which are mounted on the

same printed circuit board. A 44-pin connector

is

provided for game cartridge connection.

Two 9-pin connectors are provided for

con-

nection

of

the

Hand

Controllers. The

Logic

Board processes program data from the game

cartridge and also converts the processed

data to an

RF

signal

for

color television

operation.

D.

HAND CONTROLLER ASSEMBLIES.

The

Hand Controller Assemblies each consist

of

a printed

circuit

matrix, a numerical keypad,

two pairs

of

side-mounted pushbuttons, and

a 16-position directional control disc. The

Hand Controllers provide a means

of

calling

up program

jnformation

from the game car-

tridge for processing bytheCentralProcessing

Unit (CPU).

ANTENNA SWITCH BOX AND CABLE. The

antenna switch box provides the interface

between the console assembly and television

set.

Two spade lugs

on

the switch box

ar.e

provided for connection

to

the television set.

Two screws on the switch box are provided

for

connection tothe antenna. Theantennaswitch

box serves to select either the console assem-

bly or the external antenna

as

the source

of

RF

input to the television set. For the

75

ohm

impedance antenna systems, a balun trans-

former

is

required.

TRANSFORMER

UNIT.

The

wall-mounted

transformer

unit

converts 120 Volts AC house-

hold current

to

16 Volts AC. The transformer

unitconnects

to

theconsoleassemblythrough

a 2-wire cable, which may be unplugged from

the console for easy storage.

THEORY OF OPERATION.Referring to Figure

4,

System Block Diagram, the system

is

based

on the use

of

two processors which time-share

a bidirectional bus. The Central Processing

Unit (CPU) algorithmically computesthegame

action against program material stored in the

ROM game cartridge. The Standard Television·

Interface

Chip

(STIC) interprets a condensed

memory area and uses the information to

generate the television display.

TheSTIC also letches moving and background

picture information from the graphics memory

and presents the data

as

video output. This is

done by dividing the television screen into

an

x-v

coordinate system. For example, the

STIC fetches a pattern

or

game figure from

graphics memory to be used in gameplay.

The CPU tells the

STiC

where

to

position it

on the television screen.

CENTRAL PROCESSING

UNIT

(CPU). The

CPU

is

a complete,

16

bit, single chip, high

speed metal oxide semiconductor, large scale

integrated circuit (MOS-LSI) microprocessor.

It

utilizes a 16-bit bidirectional bus to transfer

data, addresses and instructions between the

microprocessor. memory, and peripheral

devices.

Two

phase timing and synchroniza-

tion signals are applied to the CPU by the

STiC. The CPU bus control

outputs

serve

to

define the status of bus operations.

STANDARD TELEVISION INTERFACE CHIP

(STIC). The STIC operates

within

the system

by time-sharing a 14-bit bidirectional bus.

The STIC's main

function

is

to provide

eight

coordinate-positioned

"foreground"

objects.

The second function provides a

background

display facility. The

"background"

mode

utilizes a dedicated area

of

external

memory

to store character control codes for each

display position. Both modes utilize external

memory

for

the storage

of

character patterns.

The

STIC accepts data, address and graphics

information from a common multiplexed bus.

Demultiplexing and system synchronization

are accomplished

through

three sets

of

control

signals.

Note

that the data bus is always

duplex

or

bidirectional.

The

main synchronization

(which

operates

at television frame rate) synchronizes theCPU

algorithms

to

the intended display sequences,

obtains the

"background"

character descrip-

. tors from the external memory and serves

to

enable the external devices via the 14-bit bus

when in the

CPU-controlled

mode.

The

second

set

of

control

signals is used

to

specify

address,

read and write

of

the external

memory

where

graphic

character patterns are stored. When

•

.:..

,

"C)

r-

I

L

-

--

-

-,

I

RO-950t I

ROM

I

RO-9504 I

ROM

I

•

GAME

I

CARTRIDGE

______

...J

POWER

SUPPlY

SCRATCH

PAD

RAMS

21UL

PROGRAM

ROM

RO-3-9506

....

.... L

..s..

SOUND

GENERATOR

AY-3-8914

HAND

CONTROLLERS

•

CPU

CP-1610

~

SYSTEM

RAM

RA-3-9600

"1

3"

.....

lINEAR/ANALDG/

1A

•

GRAPHICS

STIC

OIGITAL

AY-3-8900·1

ROM

LAO RO-3-9503

7-

~

7-

GRAPHICS

1-1-1

COLOR

AY-3-8915 RAMS

2114L

RF

MODULATOR

RF

-"

OUTPUT

Figure

4 -

BLOCK

DIAGRAM

-

----------------------

-_._-_._--_.

__

..., ..,

in the

CPU-controlled

mode, the graphics

control bus links the graphics memory to

the

CPU

main

memory

.

The

thirdset of controls

is

used to specify address, read and write

sequences

to/from

the STIC whIm the system

is

in

the

CPU-controlled

mode. Video

output

codes from the STIC are applied to the

color

oscillator/master

clock

generator

for

•

processing.

GRAPHICS MEMORY. The graphics memory

consists

of

a graphics read

only

memory

(ROM) and two graphics random access

memories (RAMs). The two graphics RAMs

are connected to the graphics ROM by an

B-bit static address bus. Address and read

instructions are applied

to

the graphics ROM

by the STIC.

Output

from

thegraphicsmemory

is

applied to the 14-bit secondary data bus.

COLOR

OSCILLATOR/MASTER

CLOCK

GENERATOR. The

color

oscillator/master

clock generator decodes the video

output

from the STIC and generates aclock signal

for

system control.

Oscillator

frequency

input

is obtained from a 7.159090 MHz crystal and

its associated trimmer capacitor.

The

clock

generator provides a 3.579545 MHz clock

signal output. Video

information

from the

STIC is applied to five inputs

to

produce

composite sync.

color

burst, line blanking,

screen blanking and video output.

The

analog

outputs of the

color

oscillator

are combined

by four external precision resistors

to

provide

a composite video signal

to

the

RF

Modulator.

SYSTEM RANDOM ACCESS MEMORY (SYS·

TEM RAM).

The

System RAM is a dual port

interface, 16-bit wide storage area

which

serves

as

the control decoder

for

CPU

control

data. The System RAM receives data from the

CPU via a16-bit bidirectional time-multiplexed

bus. The direction

of

data travel is from the

CPU to the graphics

memory

except

during

a

bus reversal condition.

This

condition

is

indicated when the CPU requests a read from

a graphics address on the 14-bit graphics

bus. A 3-bit control bus

from

the CPU provides

StTODe

signals

to

the System

RAM

.

tor

the

on-chip address latch and main

memory

area.

PROGRAM READ ONLY MEMORY

(PRO·

GRAM ROM). The internal program area is

comprised

of

an

executive

or

system ROM

and a scratch pad memory.

The

executive

-B-

•

ROM contains system operating data. System

program data from the executive ROM is

transmitted along a 16-bit bidirectional data

bus. The program ROM contains program data

common to all external programs. Data from

the program ROM is transmitted along a 16-bit

bidirectional bus. A scratch pad

memory

RAM

associated

with

the

program

ROM is provided

for

computation

of

the program ROM data.

Interconnection

of the program ROM and

the scratch pad

memory

RAM is accomplished

through

a 14-bit

bidirectional

data bus.

PROGRAMMABLE

SOUND

GENERATOR.

The

programmable

sound

generator

(PSG.)

is a large scale integrated

circuit

(LSI) de-

signed

to

produce

a

wide

variety

of

sounds.

All

control

signals

to

the

PSG are provided

by

the CPU.

Two

B-bit general

purpose

I/O

ports are provided

for

user interface via the

hand controllers. The PSG

output

is available

from

three

independenlly

programmed

analog

outputs

.

The

outputs

of

the PSG is

combined

on a single line,

amplified

and then applied

to

the

RF

modulator

to

produce

the

audio

output

at the television set.

•

• SYSTEM

TESTING

DIAGNOSTIC

TEST ROUTINE.

The

diagnos-

tic test routine

should

be

performed before

disassembly

of

the Master

Component.

Full

instructions covering the

operation

and analy-

sis of results are included

with

the

Diagnostic

Test

Cartridge

.

CUSTOMER'S GAME CARTRIDGE TEST.

Test the customer'sGame

Cartridge

as

follows

:

a.

Verify that Master

Component

is

con-

nected

to

television set

as

outlined

in the

Operating

Instructions.

b. Set the Antenna

Switch

Box

to

GAME

.

Insert customer's

Game

Cartridge

in

Master

Component

and

depress the

reset

switch

.

Check

for

mistakes in

lettering

on

title

picture,

jumbled

play-

field

or

unwanted

characters.

c.

If any

problems

occur.

remove cus-

tomers Game

Cartridge

and check

Master

Component

with

a

known-good

Game Cartridge.

d.

With

the

known-good

Game

Cartridge

inserted. if

problems

are

not

observed,

then the

customer's

Game

Cartridge

is

defective.

If

problems

are still

observed.

troubleshoot

the Master

Component.

DISASSEMBLY PROCEDURE

Before disassembly

of

the Master

Component.

follow

the steps in the

Testing

Procedure

section to determine the

most

likely cause

of

the malfunction. Additionally, check the wall-

mounted AC

adaptor

prior

to

disassembly

for

the possibility

of

its

malfunctioning

. Refer

to the

Troubleshooting

Procedure section

for

instructions on testing the

wall-mounted

~C

adaptor. Disassemble the

Master

Component

only

to the extent necessary to

accomplish

•

repairs.

WARNING

MAKE SURE THE MASTER

COMPONENT

IS

UNPLUGGED

FROM

THE

AC

ADAPTOR

BEFORE DISASSEMBLY. REMOVE ANY

GAME CARTRIDGE FROM

THE

UNIT,

DIS-

CONNECT

THE

RF

CABLE

FROM

THE

RF

OUTPUT

JACK

AND

THE

HAND

CONTROL-

LERS FROM THEIR SOCKETS.

DISASSEMBLY

OF

CONSOLE

ASSEMBLY.

Disassemble the Master

Component

in aclean,

well-illuminated area. Refer

to

Exploded

Diagram (Figure

5,

Page 22).

Turn console assembly

upside

down

on a

surface protected by a

soft

cloth

or

a piece

of

carpet.

-9-

a.

Remove

two

Phillips-head

screws

securing the

top

housing

assembly to

the

bottom

housing

assembly.

b.

Turn

console

assembly

right

side up.

Gently

pull

the

front

of

the top housing

assembly

up

and away

from

the bottom

housing assembly.

Small

catches in the

rear

of

the

console

assembly prevent

the top and

bottom

housing

assemblies

from being

pulled

directly

apart.

c. Remove the 3

Phillips-head

screws

holding

the

Power

Supply

Board to the

standoffs on the

Logic

Board.

d.

Gently

lift

the

Power

Supply

Board

straight up

from

the

Logic

Board.

e.

Remove 4

Phillips-head

screws

holding

the

Logic

Board

to the

lower

housing

assembly.

f. Grasp the LogiC

Board

at the 44-pin

game

connector

and

gently

pull

it

straight

up

and

away

from

the

lower

housing

assembly.

Be

sure to allow

the Channel Select

switch

to clear its

opening

in the

lower

housing

assembly.

•

,

•

--

------------------------------------------------

.

----------

---------------

-

-_

.

..

...

_---

.

•

PRELIMINARY CHECKLIST

Before

you

refer

to the

TROUBLESHOOTING

Section

which

follows,

look

at this

list

of

possible

quick

solutions. Then, If any

problem

persists,

you

should

be

able

to

find

it

in

TROUBLESHOOTING.

Press

ON/RESET

button.

With

theTest

Cartridge

inserted, go

through

the

DIAGNOSTIC

ROUTINE

and check

for

these problems:

PROBLEM

SCREEN

IS

BLANK

NO

TV PROGRAMS

BUZZING

OR

DISTORTED

SOUND

.

NO

GAME

SOUND

EFFECTS

WHITE-GRAY

SCREEN

OR SCREEN IS

ONE

COLOR

SNOWY SCREEN

(NO

RF CARRIER)

TEST

IMAGE

NOT

DISTINCT,

AS IF FROM

WEAK

SIGNAL

TEST

IMAGE

BLURRED,

WOBBLY, OR

NO

COLOR

•

-10-

POSSIBLE

SOLUTION

-Press any key

on

either

Hand

Controller

key pad to recover

picture

.

-

Check

connection

of

cable

from

Antenna

Switch

Box

to

antenna

connector

on TV.

-

Make

sure

Antenna

Switch

Box

is set

at

TV.

-Make

sure

that

coax cable

is

attached.

-

Adjust

TV fine

tuning

controls.

-

If

there is

broadcast

interference

from a

strong

Signal,

disconnect

antenna

coax

from

Antenna

Switch

Box. (This

must

be

reconnected

for

broadcast

viewing.)

-

Turn

up

TV

volume

control.

-

Adjust

fine

tuning.

-

Make

sure

cartridge

is

properly

inserted.

-

Make

sure:

-TV

tuner

is set

on

the

proper

channel.

-

Antenna

Switch

Box

is set at

GAME.

-

Game

coax

cable

is

properly

plugged

into

Antenna

Switch

Box

.

-

Power

switch

is ON.

-

Check

all

connections,

including

power

plug.

-

Adjust

fine

tuning,

brightness, and

contrast

controls.

-

Check

connections

at

Antenna

Switch

Box,

TV

antenna

connector,

and

game

output

connector.

-

Adjust

fine

tuning,

brightness, contrast,

and

color.

-

If

there

is

broadcast

interference

from

a

strong

Signal,

disconnect

antenna

cable

from

Antenna

Switch

Box.

(This

must

be

reconnected

for

broadcast

viewing.)

•

:' "

,

•

TROUBLESHOOTING

From a

design

aspect. the

Intellivision

II

Master

Component

is a

complex

configuration

of

electronic

hardware.

However

.

from

a

repair

aspect.

the

Master

Component

may

be

divided

into small

building

blocks, each part

modifying

or

adding

to

the

signals

in its

own

special

way

.

Whenever possible,

the

repair

of

the

Master

Component

is

simplified

by

looking

at

symp-

toms that

occur

when

a

component

fails.

It IS

recommended

that

the

first

few

time

you

,

the repair

technician,

troubleshoot

a

defective

Master

Component.

start at the

beginning

of

this

troubleshooting

procedure

and fOllow

through

until

the

problem

is

corrected

.

Famili-

arity

will

quickly

be

gained

in

identifying

the

appropriate

voltages

and

waveforms

found

•

-11 -

at v

arious

parts of the

circuit.

At

this

time

. you

witl be able to

qui

c

kly

identify

the

symptoms

ex

hibited

by the

Master

Component

and

per-

f

or

m the required

repair

.

When

changing

Integrated

Circuits

(ICs)

:

• ALWAYS USE A

KNOWN-GOOD

IC.

o

ALWAYS

FOLLOW

PROPER

PROCE-

DURES AND CAUTIONS FOR

HANDLING

MOS DEVICES.

•

BE

SURE OF CORRECT

fC

ORIENTATION

AND PIN INSERTION.

o

CHANGE

ONLY ONE IC AT A

TIME

AND

LEAVE IN THE

KNOWN·GOOD

IC

UNTIL

THE FAULTY ONE IS

FOUND

.

•

TROUBLESHOOTING

PROCEDURE:

Run

the

Diagnostic

Test

Routine." afault

is

discovered.

then

the

FAILURE

display

will indicate

the

ICs

most

likely

to

have

failed.

Replace

these

ICs

. "

this

does

not

solve

the

problem.

or

if

you

are

unable

to

run

the

Diagnostic

Test

Routine.

follow

this

Troubleshooting

Guide

.

AC

Adaplor

Unplug

concentrIC

plug

01

AC

Adaplor

from

Measure

16-20

VAC

between

cenler

aM

fear

of

Master

Component.

Plug

AC

Adaptor

Duler

sleeve

01

AC

Adaptor.

Inlo

ill

live

120VAC

60Hz

oullet.

NO

Replace

AC

Adaplor.

Measure

abou'

-11V!.'

TPS

wl,h

MIC

0"

.

YES

Depress

Reser

Bullon

S

1.

Voltage

al

TP8

should

1)0

to

OV

wh

i

le

51

pressed

.

NO

Remove

Reset

Bunon

S1

It

vOllage

does

nol

appear.

then

check

for

shOrted

(races

Replace

Resel

Bullon S

1.

between

51

aM

Power

Supply

Board

.

Re-

place

Power

Supply

Board

,

-

to

logiC

Board

SchematIC

IFigure

Measure

3.579545

MHz

al

4

Vp-p

at

TPIQ

.

measure

7

15909

MHz

al.V

peak

·

at

Ipg

.

NO

•

Rem

o

ve

STIC

chia U•.

II

Si

gnal

appears

.

Replace

e'YSlal

)(1

Check

C

17

and

C16

.

replace

U4

"

51

.

11

no

s.gnal

check

l

Or

Replace

UtO

Wi

th

a

known-gOOd

one

.

shoneo

[races

,

Replace

UIC

.

t

Remove

.nycari;~;~~~?!{~~l~f~!~'l

With

cartridge still

removed

.

check

'0'

Check

for

prager

at

IBeI).

proper

waveform al

TP18

(8Cl

oun

TP19

IP.6

ISC21

and

TP17

I

BOIR!.

The

RESET

fBC2

DUn

and

TP20

IBOfR

oun

Ihe

RESET

bullon will

netC!

10

be

pressed

every

few

bullon will

need

to

be

pressed

every lew

secondS

so

the

waveform

does

no.

disagpear

.

seco

n

os

so

Ihe

waveform

does

not disappear

10

NO

Replace

.

In

the

lollow.ng

oraer:

U1.

U2

.

then

-C

he

ck lor

oroken

or

ShorltO

PC

traces.

CheCk

U9

.

for

shorted

or

bent

pms

at

game

cartridge

Sockel

JI.

Rep

l

ace

U9

.

-

-12-

Power

Supply

YES

Disassemble

Master

Component

10

reveal

YES

~re

16

·

20VAC

across

TPl

and

TP2

In

YES

Ihe

Power

Supply

Boarel

allact'Ie<J

to

lhe

logiC 6.

Board

.

Plug

known

-

good

AC

Adaptor

inlO

Master

Componenl

.

NO

Check

AC

Jack

J2

.

C38

.

C39

.Flail(! tall

If

aces

belween Jl

and

Power

SUpply

BoarO

. "OK.

replace Power Supply Board.

P;;;-

and

"Ie

...

RESET

S~~~~dn

wi'h,n

YES

Witn

reterence

to

Ground

(TP3)

measure

:

YES

seconds

.

Voltage

.11

TP8

be

about •• -11

'0

-2.4

VOC

"

TP4

-5VDC

. b -545

fO

-5.95

VOC

.,

TP5

c

-11

.5

fo

-12

.5 VOC"

TPS

1. -485 '0

-5

.•5

VOC

"

TP7

ND

Check

Ihill

Reset

Bullon

IS

nOI

making

inler-

mlltam

conlaCI.

Replace

Power

Supply

Board

~power;

with a

known-oood

one.

II

problem

is

slill

With

a known-

apparen!.

Inen

taul!

is

in

LoOic

Board

.

Con-

gOOd

one

If

is

not

measured

.

l.nue

lollowlnQ

Sleps

;n

this

Troublesl1Ooting

Inen

taul!

.s

.n

.

Conllnue

tollow-

Guide

.

inQ

steps

10

this

19

Guide

.

..!!.!..

Measure

1.789n2

MHz

at5Vp-p

.11

TP11

and

...!!!.

Measure

1.789772

MHz

at

IOVp-p

al

TP13and

YES

TP1

1. TP'.

NO

,

Replace

In

lhe

follOWing

order

:

u_

,

U2

.

Ug

, -

Repla

c

e.

In me

101l0wlng

oraer

:

U1.

then

U9

or

U3

..

YES

Plug

cartridge Into

game

socket.

Check

10f

YES

II

problem

IS

nOI

solved. continue with

Ihe

proper

waveform al

TP21

(BCl

IN).

TP22

Symptom/Remedy

guide

starting

on

the

fBC2

'NI.

.nd

TP23IBOIR

INI

.

nUl

page

.

ND

RecheCk

sionals

at

IP18.

TP19

.

and

TP20

. If

OK.

check

game

socket

Jl

and

game

car-

tridge

ton

a

knawn-good

M/C)

. II

Signals

ilft

nOI

OK

.

reglaee

0.4

. then ti6.

-13-

----------------------------------

-

-------------------

._-----

If the problem

is

not found

and

corrected with the procedures on the previous

page,

then follow this Symptom/Remedy

Guide:

SYMPTOM SUSPECT REMEDY

Snow on

TV

(with

or

Unit

is

not turning on. Review voltage check in

Trouble·

without diagnostic test shooting Guide.

pattern visible.) Fuse

is

blown. Check

continuity

of

fuse on Logic

• , Board. Replace if

open.

If new fuse

blows quickly, check for

proper

voltages from Power

Supply

Board.

If voltages 0

K,

check for

shorted

components

or

traces on Logic Board.

Voltage

at

pin 2

of

RF

Modulator

is

Check

R7

and

CIS.

not

about

+6 VDC.

RF

Modulator

is

defective. Connect a known-good

Modulator

in

paraliel with

the

Modulator.

Connect

the

RF

Cable

to

the

known-good

Modulator

and

touch

the

cases together.

If

this clears the problem, replace

Modulator.

Solder bridges

or

foreign material Inspect

for

solder bridges

or

foreign

are

causing shorts. material on the Logic Board.

The +12 VDC supply i. defective.

Troubleshoot

the

+12 VDC supply and

distribution on the Logic Board.

Grey·white screen with NO Clock circuitry

not

functioning. Review procedure in Troubleshooting

flash observed on

the

TV Guide on

troubleshooting

clock

screen when the reset switch circuitry.

is

depressed.

5.7 VDC

to

STIC missing. Measure 5.7 VDC

at

20

of

STIC

(U4). If

not,

troubleshoot

5.7

VDC

distribution

system

on

Logic

Board.

-2.25

VDC

to

STIC miosing. Measure

-2.5

VDC

at

40

of

STIC

(U41. If

not,

troubleshoot

-2.25

VDC

distribution

system

on

Logic Board.

Solder

bridges

or foreign material

Remove

any

foreign material or

solder

causing

shorts

on

Logic Board. bridges.

Grey-white screen WITH The

test

cartridge

is

incorrectly or Insert cartridge correctly.

flash

occurring

on

the

TV

incompletely inserted

into

the

screen

when

reset

switch

Master

Component.

is

depressed.

Master

Component cartridge socket Visually inspect socket for bent

pins,

is

defective.

foreign

material, etc.

DefectivI Test Cartridge. Try

another

cartridge.

Clock

Signal

path

not

complete.

Review

procedure

in

Troubleshooting

Guide on

checking

clock circuitry.

+5 VDC supply problems.

Troubleshoot

+5 VDC

supply

and

distribution path.

-Defective

IC.

Insert test cartridge

and

run

Diagnostic

Test Routine. Replace

any

ICs

that

are

indicated as failed.

-14-

•

-1

-

•

--------

---------------

-

---

i

,

•

!

,

•

,

i

,

•

,

'-

SYMPTOM

Grey-white screen WITH

fllsh ocCllrrin,

on

tM

TV

,

scre.n

when

relit switch

is

depreald.

(continued)

Incorrect,

extr.,

or

missing

video

patterns

or

characters.

Distorted

TV

picture.

No

sound

(picture

and

vidlo OK),

SUSPECT

Defective

IC

(continued

I.

Incorrect

or

missing

bus

control

signals,

Solder bridges

or

foreign material

causing

shons.

One

or

more

les

are

defective.

Incorrect

or

missing DC Voltages.

Test Clrtridge

is

defective.

Solder bridges

or

foreign material

is

causing

shorts.

Interference from a nearby television

or

radio transmitter. •

The tlSt

setup

is

incorrect.

STIC

IC

(U4) or Color

IC

(Ul01

is

defective,

Defective

RF

modulator.

Solder bridges

or

foreign material

causing

shorts.

TV

volume

tumed

down,

-15-

REMEDY

If

Test Routine will

not

run (using I

known-good

test

canridge)

Ind

III

voltages are OK, repllce

tM

ICs

in

the

following

order:

Ul,

U2, U4, U3,

or U6.

Review

procedure

in

Troubleshooting

Guide

on

checking bus control signlls.

Remove

any

foreign mattrial

or

solder

shons.

Insen

test

canridge

Ind

Dilgnostic Test

Routine. Replece

Iny

indicated

ICs.

Most graphics problems

Ire

c..,sed

by U2, U4, U5, U7,

or

US.

Check for

correct

DC

voltlges

on

8Ich

IC

(refer

to

SchematiC, Figure SI.

Try a known-good Test

C.nridge.

Remove

any

foreign material

or

solder

shons.

Switch television and Master Component

to another channel andlor disconnect

the

antenna wire from

the

antenna

switch box.

Check

all

television controls

and

can·

nections for

agreement

between the

TV

VHF channel selector and

the

Master

Component

channel selector.

Replace these

ICs

(one

at

a timel with

known-good

ones.

Connect

a

known·good

modulator in

parallel

with

the

modulator.

Connect

the

RF coble

to

the

known-good

modulator

and

touch

the

two

modu·

lator cases

together.

If

the

problem

clea<1,

replace

the

modulator.

Remove

any

foreign material

or

solder

bridges.

Check TV Volume setting.

I

•

I

i

•

i

I

,

•

!

I

!

1

,.

_

--

•

SYMPTOM SUSPECT REMEDY

No

sound (picture and

Sound

IC

(UG), U3,

or

U9

is

Scope

for

audio

signal

at

pin 4

of

UG

video OK). defective. during Audio Test

on

Test Cartridge.

(continued)

If

no

Audio, replace

UG,

U9,

then

U3.

If

signal

at

pin 4

of

U6

OK,

but

no

signal

at

pin 9

of

U9, replace US.

AF

Modulator

is

defective. First check the audio input lead of the

modulator for signal.

If

signal

is

pres-

ent, connect a known-good modulator

in

parallel wi

th

the modulator. Connect

the

RF cable

to

the

known-good

modu

·

lator and

touch

the

two

modulator cases

together.

Run

the Sound Test on the

Test Cartridge.

If

sound

is

OK

, replace

the

modulator.

Solder

bridges

or

foreign

material Remove solder bridges

or

foreign

causing shorts. material.

Hand Controller The Hand

Controller

is

defective. Plug in a

known-good

Hand

Controller

malfunctions.

and

perform

the

Hand

Controller

Test.

UG

or

U3

is

defective. Replace U6,

then

U3.

The

9 pin

connector

on

the

Logic Board Check the 9 pin

connector

and

assO

-

for the Hand Controllers

is

defective. ciated traces

on

the Logic Board.

,

Other

les

are

defective. Replace, in the following order: U4 ,

U2,

Ul,

U12,

and

U13.

The picture

suddenly

goes The test cartridge

is

defective. Try another cartridge.

Also

check (he

blank duri

ng

the diagnostic Master

Component

cartridge slot.

test. One or more

ICs

are defective. Replace.

in

the following order:

Ul

,

•

U2.

and

U4

.

The reset

button

is

defective. Check the reset

bunon.

Crystal X1

is

defective.

GENTLY

tap

the

crystal

and

observe

the picture.

Foreign material

is

causing an

Inspect

the

Logic Board

for

foreign

intermittent short. material. .

Picture action "freeze-up

."

One or more

les

are

defective. Replace, in the following order: U I ,

U4,

U2,

and

U3 .

The Test Cartridge

is

defective. Try another cartridge.

The

Master

Component

cartridge

socket

(nspect

the

cartridge

socket

for

bent

is

defective. pins, foreign materials, etc.

Chann_1 Select switch does

The

switch

i.

defective. Replace

the

switch.

not operate correctly.

-Th_

modulator

is

defective. Connect a known-good modulator

in

parallel

with

the

modulator.

Connect

the

RF cable

to

the

known-good

.

modulator and

touch

the

two

cases

together

.

Switch

the

Channel

Sel.ct

.

If

the

channel

now

changes, replace

the

modulator

.

-16-

•

'SYMPTOM

SUSPECT

REMEDY

-I~------------------------------1------------------

The picture

has

the wrong

colors

or

no

colors_ The

TV

control.

are

.et

wrong.

The crystal X1

is

set to the wrong

frequency.

STIC (U4) or

Color

(UIO)

IC,

are

defective.

Solder bridges

or

foreign material

causing a shan.

•

-17-

• Check all TV

controls

.

Check the frequency at pin

15

of

UIO.

It

should

be

3.

579545

MHz +1- 1

00Hz

.

Adjust the frequency by adjusting

var

iable capacitor (C

17)

.

Replace U4. then

UIO.

Remove any solder bridges or foreign

material.

•

..

~

"

-

..

I

,

"

,

I

•

,

" , "

•

..

,

,"

,

s

,

J

..

,

."r

,

, ,

,

r-

~

.-.

~

•

w

•

_.

.-

.

'., .

--

..'

.

..

""

,

" a

".

, ' ...

,

..

"

:":;

".

,

"

..

-'

,

o

'...

..

-_.

~

..

~.

••

......

_---

.

_"flrU

'---

.

' " -

......

.

-.

.--.

---.

--

."~

._--

~

,

, .

..'

•.,

..

.-.-

>

...

.

'

-.

.--

.

,

..

•

~---

_

..

'

""

o

" ..

.

~.

•

.,

",1

,

)

•

..

!

--...

...:

..

•

.

...

..

•

"

,

..

"

, "

..

,

..

,

, .

,

• ..,

.,

, ."

.•

. •

~

"'

_

.., _.

..

...

• •

-

..

.-

'.,

•

'....

...

"

-'. ..

..

,

..

. "

..

"

'"

0

,

..

...

.

..

,

·

18·

,

"

,

I

r

. ,

I

..

r

I

!

•

o

,

".

~

'.

.'

"

•.•

i=

.

...

.-

,

..-- .

-

..

--~

.

I

•

,

.

..

,

, '

-.

.,.

.'

• •

.

, .

~

F

~

'

?""~

. ,~

'I

..

.,

:

~~~

"

..

....

. .

..

•1,

,.

,

~:!

~~-

'

;

'

-"

" "

"

" ':' .

",

',,"'

"

• , ,

,

•

...

:J

o

>-

<t

...J

,....

z

""

z

c

'"

-

'"

..:

o

III

,

U

Q.

I

Ul

..

-

::>

Ol

•

..

.

TP7 TP5 TP3

~

TP6 TP4 TP2

TP1

Figure 6 - Power

Supply

Board

TP1 -

TP

2

......

.

...

.

..

,.,

.......

.

.....

..

...........

" _

....

16-20VAC

TP3

TP4

TP5

TP6

TP7

TP8

............

.

..............

.

....

. . .

..........

Ground Connection

·

...............

.

.................

.

.........

..

-2.10 to -2.40 VDC

·

.....

..

....

.

...

.

...

..

....

. .

.....

. .

......

.

..

+5.45 to +5.95

VDC

..............................................

+11.5 to +12.5

VDC

·

...........................................

..

+4.85 to +5.15

VDC

•

..

Control

(+21VDC/unit

Off.

+5VDC/unit

On.

OVDC/Reset pressed)

-19-

•

Mattel IntelliVision II 5872 User manual

Popular Computer Hardware manuals by other brands