Yamaha P-850 P-850 OWNERS MANUAL - Page 11

P-850

TROUBLESHOOTING

Before

assuming

that

your

turntable

is

faulty,

check

the

following

troubleshooting

list

which

details

the

corrective

action

you

can

take

yourself

without

having

to

cal

l

a

service

engineer.

If

you

have

any

doubts

or

questions,

get

in

touch

with

your

nearest

YAMAHA

dealer.

Fault

Cause

Cure

1

Platter

does

not

rotate,

although

PLAY

switch

is

depressed.

Power

cord

is

not

firmly

plugged

into

AC

power

outlet

or

into

auxiliary

power

outlet

of

amplifier.

Connect

the

power

cord

securely

to

the

AC

power

outlet

or

to

the

amplifier's

auxiliary

power

outlet.

Tonearm

is

not

properly

balanced

when

cartridge

is

replaced.

The

cartridge

is

either

too

heavy

or

too

light.

The

proper

cartridge

weight

ranges

from

2.5

to

10

grams.

If

the

weight

of

the

cartridge

used

is

within

this

range,

slide

the

weight

to

the

front

or

rear

and

re

-adjust.

There

is

no

sound

or

low

sound

although

the

stylus

descends

to

the

record

surface.

Defective

contact

of

headshell

connector

pins.

Mount

the

headshell

firmly

onto

the

tonearm.

Amplifier's

function

switch

is

not

set

to

PHONO.

Set

the

function

switch

to

PHONO.

Amplifier's

volume

control

is

at

lowest

position.

Turn

up

the

volume

control

to

the

required

position.

Defective

connection

of

turntable's

output

cords.

Check

the

connecting

terminals

on

the

rear

panel

and

amplifier.

The

body

of

the

cartridge

catches

on

the

record

surface.

Tracking

force

is

too

high.

Re

-adjust

to

the

proper

tracking

force.

Reproduced

sound

is

distorted

and

unpleasant,

parti-

cularly

the

treble,

with

a

clicking

or

scraping

noise.

Turntable

is

not

set

horizontally.

Instal

l

the

turntable

horizontal

ly.

Dust

on

stylus.

Clean

the

stylus

with

a

stylus

cleaning

brush.

Worn

stylus.

Replace

the

stylus.

Damaged

or

dusty,

dirty

record.

Replace

with

a

new

record.

Tracking

force

is

either

too

high

or

too

low,

Readjust

the

tracking

force

for

the

cartridge

to

the

recom-

mended

value.

Ampl

ifier's

treble

control

is

turned

up

too

high.

Try

returning

the

treble

control

to

the

FLAT

position.

Reproduced

sound

quivers

and

a

howl

(acoustic

feed-

back)

is

heard.

Installation

locations

of

speaker

systems

and

turntable

are

too

close

together

or

turntable

is

unstable

and

vibrations

are

being

transmitted

to

cause

resonance.

Move

the

turntable

to

a

stable

location,

move

it

some

dis-

-

lance

from

the

speakers,

or

change

the

speaker

locations

(in

particular,

avoid

installation

in

corners).

A

loud

humming

sound

is

heard

during

record

play.

Turntable's

ground

wire

is

not

connected

to

amplifier's

ground

terminal.

Connect

the

ground

wire

to

the

ground

terminal

.

(Sometimes

a

better

effect

can

be

obtained

by

not

con

-

necting

this

wire,

however.)

Defective

contact

of

headshell

connector

pins.

Mount

the

headshell

properly

onto

the

tonearm.

The

muting

circuit

fails

to

silence

the

click

when

the

stylus

first

contacts

the

record

surface.

The

stylus

height

has

not

been

adjusted

properly.

Adjust

according

to

instructions

on

page

6.

10

Yamaha P-850 P-850 OWNERS MANUAL - Page 11

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