Brenell MINI 8 - Remote Drive Socket; Fault Finding & Basic Maintenance; Basic Maintenance Overview; Cleaning Guidelines

18 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

7.3

A

remote

drive

socket

is

provided

at

the

rear

of

the

Mini

8

for

the

purpose

of

variable

speed

capstan

drive.

The

wiring

from

the

capstan

motor

may

be

connected

to

this

socket

in

order

to

feed

a

240V.

signal

at

varying

frequency

which

will

vary

ths

speed

of

the

capstan

itself.

A

separate

data

sheet

on

Varyspeed

will

be

available

shortly.

8.

FAULT

FINDING

&

BASIC

MAINTENANCE

8.1

Basic

Maintenance

All

bearings

on

Mini

8

are

lubricated

for

life

and

require

no

oiling

or

adjustment.

The

only

maintenance

that

should

be

attempted

by

the

user

is

that

normally

associated

with

keeping

the

tape

path

clean

and

demagnetised.

8.2

Cleaning

The

use

of

a

proprietary

head

cleaning

fluid

is

recommended

at

regular

intervals

depending

upon

the

degree

of

useage.

Never

use

any

hard

or

metallic

tools

for

cleaning

the

tape

heads

or

guides

as

they

will

induce

stray

magnetism

and

possibly

scratch

the

highly

polished

surfaces.

Only

soft

cloths

or

cotton

tipped

cleaning

stocks

should

be

used.

8.3

De-Magnetising

At

frequent

intervals

the

tape

path

-

that

is

the

tape

guides,

the

heads,

the

tape

lifters,

the

capstan

and

motion

sensing

roller,

should

be

demagnetised.

In

no

circumstances

should

the

machine

be

demagnetised

while

it

is

switched

on.

8.4

Fault

Finding

In

the

main

fault

finding

and

repair

are

tasks

better

left

to

a

competent

servoce

engineer.

There

are,

however,

a

number

of

simple

checks

that

can

be

carried

out

by

the

user.

8.5

Preliminary

Checks

In

view

of

the

number

of

connectors

associated

with

the

recorder

it

is

wise

to

check

those

first.

No

power

at

the

recorder

may

indicate

that

the

power

supply

unit

connectors

are

not

properly

inserted

or

that

a

fuse

has

failed

(see

8.8).

8.6

Failure

of

a

single

channel

module

to

replay

or

record,

if

there

is

no

indication

on

the

appropriate

VU

meter,

could

be

due

to

an

input

or

output

cable

or

jack

and

this

can

be

checked

by

substitution

-

otherwise

a

single

channel

failure

may

be

temporarily

overcome

as

described

in

8.9.

8.7

If

the

machine

operates

but

fails

to

record

on

any

channel

it

is

possible

that

the

bias/erase

oscillator,

which

is

in

the

power

supply

unit,

is

not

connected

.