Commodore 1541-II Uživatelská příručka stáhnout pdf (Strana 19)

2-6.

Mechanical

Alignment

of

Track

#1

Stop

2-6-1.

General

This

procedure

adjusts

the

Track

#1

Stop.

The

Track

#1

Stop

is

used

by

the

computer

in

the

VIC-1541

for

only

two

purposes:

1.

Formatting

a

blank

floppy

disk

("New"

command).

2.

Soft

error

recovery.

The

procedure

that

follows

should

only

be

used

after

carefully

verifying

that

the

rest

of

the

VIC-1541

is

properly

operating.

(Complete

coverage

of

proper

operation

is

given

in

Troubleshooting-Part

2,

in

the

1541

Maintenance

Manual.)

2-6-2.

Preparation

for

Mechanical

Alignment

(Detailed

disassembly/assembly

instructions

can

be

found

in

the

1541

Maintenance

Manual.)

1.

Remove

all

external

cables

from

VIC-1541.

2.

Remove

upper

cover.

3.

Remove

RFI

Shield.

4.

Remove

Disk

Controller

PC

Board.

5.

Remove

Drive

Unit.

6.

Reconnect

Jl

to

PI,

J2

to

P2,

J5

to

P5,

J6

to

P6

and

J7

to P7

in

such

a

manner

that

access

is

still

allowed

to

the

Track

#1

Stop

adjustment.

(See

Figure

2-3)

(CAUTION

1

•

DO

NOT

ALLOW

PATHWORK

ON DISK

CONTROLLER

PC

BOARD

TO

CONTACT

THE

FRAME

OR

DRIVE

UNIT

ASSEMBLIES.

USE

AN

INSULATING

RUBBER

MAT,

IF

NECESSARY,

TO

INSULATE

THE

DISK

CONTROLLER

PC

BOARD

FROM

THESE

ASSEMBLIES.

2-6-3.

Mechanical

Alignment

1.

Connect

serial

bus

cable

between

P3

and

VIC-20/COMMODORE

64.

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