Sansui A-X950 - Page 23

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10.

SIGNAL

FLOWCHART

OF

THE

SYSTEM

¢

For

the

functional

description

of

each

pin

for

the

control

cable

connected

between

each

set,

see

Page

17.

YOLIITIS

OIlanv

as

Me

co

om

exe)

4

°

td

11.

REPLACEMENT

OF

MAIN

PARTS

4)

Remove

2

panel-setting

screws

equipped

in

the

foot

Assy

unit

on

A.

Front

Power

IC

1)

Remove

the

bonnet.

2)

Remove

2

rear-panel

setting

screws

®.

(See

the

Rear

View

on

Page

14.)

3)

Remove

4

heat-sink

holder

setting

screws

®.

(See

the

Top

View.)

4)

Remove

3

screws

©

for

fixing

the

main

board

F-6805.

5)

Remove

2

hooks

®

to

support

PC.

6)

Remove

the

master

volume

knob.

7)

Remove

the

F-6813

master

volume

indicator

board,

out

of

the

volume

shaft.

8)

Remove

the

nut

that

is

fixing

the

master

volume.

9)

Remove

2

pawls

that

fix

the

rear

panel

and

the

chassis,

and

slide

the

rear

panel

and

the

F-6805

board

backward

from

the

chassis.

(See

the

Rear

View.)

10)Remove

4

power-IC

(TA8225H

and

TA8210AH)

setting

screws

of

the

F6816,

and

remove

the

F-6816

board

together

with

the

IC.

11)Disconnect

the

soldered

front

power

IC

(STK4164-2).

1

2)Remove

the

F-6815

board

upwardly.

-

13)Remove

2

front-power

IC

setting

screws

©

and

remove

the

IC.

(See

the

Top

View.)

Note:

@

Each

the

F-6806

PC

board

into

the

groove

of

the

F-6807

board

and

the

board

clamp

of

the

chassis,

during

mounting.

(See

Fig.

11-1.)

®

Be

sure

to

mount

the

F-6822

board

for

fixing

the

board.

B.

Front Panel

1)

Remove

the

bonnet.

2)

Remove

the

master

volume

and

the

microphone

level

knob.

3)

Remove

the

F-6813

volume

indicator

board

out

of

the

volume

shaft,

and

remove

the

nut

that

fixes

the

volume.

5)

6)

~~

7)

8)

the

bottom

side.

Remove

hooks

on

the

chassis

side

and

the

F-6820

microphone

amplifier

board

and

remove

the

panel

out

of

the

chassis.

Remove

the

set

screws

and

hooks

and

remove

the

F-6817

display

board

and

the

F-6818

control

switch

board,

out

of

the

panel.

Remove

the

nut

that

fixes

the

switch

of

the

F-6811

and

remove

the

board.

Remove

4

stoppers

of

the

plastic

panel

and

separate

the

panel

from

the

aluminum

panel

in

a

horizontal

state.

(See

Fig.

11-2.)

Note:

Each

knob

is

only

sandwiched

between

boards,

so

check

Fig.

11-1

Board

clamp

carefully

that

they

are

corectly

mounted.

Fig.

11-2

Stopper

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