Sharp MZ-80SFD Bedienungsanleitung PDF herunterladen (Seite 10)

4.

Media guide l assembly (with write

protect

sensor lamp)

1) Inspection

ill

Connect power socket

to

connector

J2

of

PWB

unit. Turn power on.

@ Before inserting a diskette, check

the

following

items.

a)

Write protect lamp

Make sure

that

there

is

a voltage range

of

DC

1

to

1.7V between

B-13

(lower yellow lead

of

the

13th pin from power socket) and A-13

(black

lead

of

the

13th pin from power socket), both

belonging

to

connector J3.

b) Write protect sensor

Make

sure

that

there

is

a voltage range

of

DC

0

to

O.5V

between

B-14

(orange lead below the

14th pin from power socket) and A-14 (black

lead

of

the

14th pin from power socket), both

belonging

to

connector J3.

@ Put a write protect diskette (with write

protect

seal being applied at the write protect notch of

diskette)

in

place, and shut the

front

door. Then

check

the

following item.

• Write protect sensor

Make

sure

that

there

is

a voltage range

of

DC

2.5

to

5.25V between 8-14 and A-14

of

connector J3.

2) Replacement

CD

Remove

PWB

unit (refer

to

page 6).

@ Open the front door.

@ Detach 4 lead wires

of

media guide L assembly

from the housing of connector J3.

@ Remove 2 media guide L assembly fixing screws

(3

mm) and take

out

the assembly.

@ To attach, take the reverse order.

® Carry

out

inspection, referring

to

description at

left.

Note)

1. Attach the media guide L

assembly by pushing it

to

main frame stopper side and front bezel side.

2.

Lamp and sensor cannot be individually replaced,

because they are built

in

the

media guide L

assembly.

Media

guide

L assembly fixing screw

Write

protect

lamp

Push

Media

guide

L

assembly

Front

bezel

Main

frame

stopper

-8-

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 23 24

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