Sharp MZ-80SFD Manual de usuario descargar pdf (Pagina 11)

5. Operation indicator

1) Inspection

CD

Connect power socket

to

connector

J2

of

PWB

unit and turn power on.

(Z;

Let drive select 0

of

interface signals be

at

low

levels

(make a short between J1·B terminal

of

PWB

and

PWB

Ground). and make short pin

DSO

circuit shorted. (Do

not

prolong this test.)

Note

that

the voltage range between connector

J3·B 1 0 (red lead of

the

10th pin from power

socket) and J

3-A

10 (upper black lead

of

the 10th

pin from power socekt) will be

DC

1

to

2V when

the

lamp

is

lit.

2)

Replacement

CD

Remove

PWB

unit (refer

to

page 14).

@ Datach 2 lead wires of operation indicator from

the

housing

of

connector J3, and take lead wires

out

of

the

wire holder.

CID

Open

the

front door.

@)

Remove 2 front bezel fixing screws (3 mm) and

the front

bezel itself by pulling it forward.

@)

Draw

out

the

holder 2 with tweezers

in

the

arrow

direction. Take

out

LED

holder. (See the sketch

at

right.)

@ Draw

LED

out

of

the

LED

holder. To assemble,

take the reverse order.

(j) Carry

out

inspection, referring

to

the above

instruction.

Main frame side

Front

bezel

Front

door

-9-

Pull-out

direction

Note:

Front

bezel

LED

holder

Pull-out

direction

~

~

z~"

1.

Attach the

front

bezel assembly, by pushing it

to

main frame side and main frame stopper. (See the

sketch

below.)

2.

Do not pull up the carrier with fingers, otherwise

excessive force

is

applied

to

the

head arm.

Main frame stopper

Main frame side

1)'

Front

bezel

fixing

screw

Push

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 23 24

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