Zenith J584W - Page 44

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FIGURE

36

-

MODELS

J596W

AND

JR$96W

ACCESSIBILITY

TO

CHASSIS

15WJR29

7.

Remove

four

(4)

screws

("X"

in

Figure

35),

holding

tuner

chassis

to

front

panel.

8.

Slide

tuner

chassis

out

through

front

panel

(noting

loca



tion

of

RFI

shield

"R"

on

Model

JR596W).

CAUTION:

When

replacing

tuner

chassis

in

Model

JR596W

be

certain

RFI

shield

is

in

proper

location.

NOTE:

Main

unit

should

be

in

horizontal

position

when

reinstalling

tuner

chassis.

CHASSIS

15WJR29

ACCESSIBILITY

FOR

SERVICING

AND

ALIGNMENT

(See

Figures

33

and

36)

Dnce

the

bottom

cover

has

been

removed

from

Models

J596W

ind

JR596W,

you

will

see

that

there

is

ready

accessibility

to

he

foil

sides

of

both

the

tuner

and

the

combined

power

upply/power

amplifier

chassis

for

servicing

and

also

some

ilignment

points

(See

Figure

33

for

bottom

view),

But,

what

f

you

want

to

make

adjustments

on

the

gang,

or

at

other

Joints

not

accessible

from

the

foil

side?

In

most

cases

it

is

lot

necessary

to

remove

the

tuner

chassis!

Just

remove

the

nap-off

escutcheon

as

explained!

)nce

the

escutcheon

is

removed,

locate

the

dial

light

well

'EE"

(See

Figure

86).

1.

Rotate

the

tuning

shaft

"AA"

counter-clockwise

(gang

closed).

2.

Remove

two

screws

"BB"

holding

dial

pointer

back



ground

strip

"CC".

3.

Remove

five

screws

"DD"

holding

dial

light

well

"EE".

4.

Lift

dial

light

well

"EE"

and

move

it

out

of

way,

being

careful

not

to

create

a

short.

You

now

have

access

to

most

components

on

the

component

side

of

the

tuner

circuit

board

(without

the

time

required

to

remove

the

chassis)

for

alignment,

visual

inspection

and

limited

parts

replacement.

This

unique

service

tip

will

save

considerable

time

when

servicing

this

area

of

Chassis

15WJR29.

ADDITIONAL

DISASSEMBLY

PROCEDURES

In

addition

to

the

disassembly

procedure

for

Models

J596W

and

JR596W

outlined

above,

there

are

two

other

procedures

(Groups

"B"

and

"C"

below)

which

apply

to

various

"G",

"H"

and

"J"

line

models

that

also

use

the

snap-off

escutcheon

and

the

outfront

chassis

removal

concepts.

On

such

models

the

escutcheon

is

held

in

place

by

three

(or

more

depending

on

model)

studs

and

clips.

This

method

facilitates

access

for

cleaning

the

back

side

of

the

escutcheon

lens

and

also

for

access

to

chassis

mounting

screws.

The

chassis

(and/or

some

tape

units)

may

be

removed

thru

the

front

of

modular

models,

or

thru

the

top

mounting

panel

of

console

models.

42

Model

J584W

is

representative

of

those

models

which

have

the

above

features,

and

will

be

used

in

the

following

explanation.

ESCUTCHEON

REMOVAL

-

GROUP

"B"

Figure

37

illustrates

the

technique

used:

1.

Remove

all

knobs

(except

AFC)

from

the

control

panel.

2.

Rotate

tuning

shaft

so

that

the

"flat"

is

vertical,

and

the

cut-away

portion

is

facing

the

headphone

jack.

GROUP

"B"

models

include:

CHASSIS

1WGR50

CHASSIS

6WGR55

MODELS

G901P

MODEL

G920AE

GR901P1

G921P

H901P,

P11

HR901P,

P11

G922M

HR902P,

P1

1

CHASSIS

3WHR50

HR903PN,PN11

MODELS

H914P

SR917M

H915AE

SR918P

H916M

CHASSIS

3WGR50

CHASSIS

3WHR52

MODELS

G914P,

P11

MODELS

H584W

G915AE,

AE11

H587W

G916M,M11

HR587W

CHASSIS

3WGR52

CHASSIS

6WHR55

MODELS

G584W1,W2

MODELS

HR920AE

G587W2,

W3

HR921P

GR587W1,W2

HR922M

CHASSIS

3WGR54

CHASSIS

3WJR51

MODEL

G680W2

MODEL

J584W,

W1