MERIDIAN AUDIO 66 data

'.-

auAD66

Compact

Disc Player

\at

Service

Data

'5

-r

OSCDIED

Quad
St. Peters Road Huntingdon

Cambs
Telephone
Fax

Electroacoustics

PE18

7DB England

0480

52561

413403

0480

Ltd

ü

coNTENTS

QUAD

66

CD service

data

Page

Introduction
Specification
CD Player
Service
Dismantling

Removing

Removing
Removing

-

Removing

Removing
CD Player
Replacing

-

Brief

Simple Block

Hints

For

Service

Top

Rear
Front
Display
PCB

Layout

CD

Operation

Diagram

Cover

Panel

Panel

Board

Complete With

Mechanism

Mechanism

CD

4

5
6
7
7
7
8
8
8
8
9

10

5

Replacing
Changing

Voltage

Measurements

Laser

Focus

Power

Supply

CD Display

Mechanism

CD
CD

Circuit Diagram
GD Player
Parts

Exploded

Lists

Mechanical

Display

Mains

Bulbs

Voltage

and

Current

Offset

Circuit"Diagram

Circuit Diagram

Exploded

View

View

Adjustments

11
11

12
12
12
13
13
14

15
16
17
17

Accessories
Miscellaneous

18
18

v

page

3

QUAD

66 CD

service

data

INTRODUCTTON

The

Quad
minimum
serious

written and

programming

player

The
'CD

single'
The main operating
functions are available

supplied as

being

More

than

the unit

Performance of the Quad
achieve
orocedures.

player

CD

number

listener wishes to

music

will normally start

permits

disc drawer
format

one

at the CD

by careful

is

designed

controls

of

tracks

will accept

without any special

controls

via a

standard

remote control

player

design,

for the serious
funclions on the assumption

and

hear music

from the

to be selected

compact audio

are separated

remote control

can be used

is often the

as

player

CD

selection of

is as accurate

music listener.

in

order

the

beginning of

and

adapters.

from the

unit, a compact

and

case

componenls

a disc. However simple

played

discs

it is not necessary to

as it is

lt has

that the

in which it was

in any sequence.

'normal'

in

the

player

and all

possible

and rigorous test

hand

major

held

to

the

and

type

point

3

BRIEF OPERATING
INSTRUCTIONS

o Switch on.

Press

O

a
a Gently

a
O

drawer

will open.
Place disc,

The disc

For full remote
programming refer to appropriate

of instruction

button.

label side

push

front ol drawer.

will now start

control

book.

up,

The drawer compartment

in

drawer

play

to
operation

compartment.

lt will close by

from the beginning

and track

section

itself .

tt

page

v

4

sPEcrFrcATroN

0

QUAD

66

CD service

data

Main

Unit

ü

OPeration:

Number
Frequency
Amplitude
Phase linearity:
Dynamic
Signal/noise ratio:
Channel
Total harmonic
Wow
DiA

of channels: 2

response:

linearity:

range:

separation:

distortion: 0.003% 20 - 20.000 Hz.

flutter:

and

conversion:

Full function
simple direct
remote

20 - 20,000

+/-

+/­96 dB 20 - 20,000 Flz.
96 dB
93 dB

Below

Quadruple
digital

control.

0.1 dB

0.5 deg 20 - 20,000

measurement levels.

filter

infrared remote

by

play

to

Hz.

20

-

2A

-

20

oversampling

and two

operation without

-

20,000 Hz.

20,000 Hz.

20,000 Hz.

16-bit

Hz.

control

(176.4kH2)

D/A

converters.

with

or

Error

correction

system:

Cross

interleaved

Reed

Solomon

Code

(crRC).

Audio

Output:

Optical

Sampling frequency.

tr

\J

Digital
Remote

Mains voltage:

Power
Dimensions:

readout

system: Laser

output: For

control

consumption: 25W

Interface:

2 V rms
material.

44.1 kHz.

RC-s

'10V,127V,220V,240V

1

PCB)
back.

Width
mm.
approx.

max.

Minimum load impedance

semi-conductor A/GaA

nm.

800

digital signal

mV

300

on

processors.

system.

Hz.

50-60

approx.

mm; height

321

approx. drawer

See

rating

80

opens

normal

(changed

mm;

programme

wavelength

by

plate

on

depth

145

by

10

kO.

links
player

275

mm

on

\y

Weight:

3.5

kg

approx.

page

5

QUAD

CD service

66

data

Remote ControllSystem:

Dimensions:

Weight:
Battery

Battery

The

This

as

life:

type:

right is reserued

compact disc

taid

down

player

in EEC

to alter

(European

performance

complies

Infrared.

48 mm; length 174 mm;

Width

mm

22

1009

One
operation, using alkaline

Three AAA

Economic Community)

approx.

(inc

batteries) approx.

year

approximately

size

and specifications as

with

radio interterence requirements

the

with

cells.

alkaline cells.

regulations.

thickness

normal

required.

A
!

Player

CD
Simple
Diagram

Block

AUDIO OUTPUT

MAIN

PCB

CD MECHANISM

QCDMECH

t

QCDPCB1

MAINS INPUT

v

page

6

QUAD

66

CD service

data

*J

senvrcE

HINTS

Electrostatic Precautions

DISMANTLING FOR
SERVICE

(ESD)

Warning

damage may

All

the
electrostatic
Careless handling

their life.
when
the
components

Surface mounted
servicing
must

Note:
Simple

access
rear
mains

avoid

direct viewing

occur to the eye

lC's

fitted

and

discharges

repairing,

mass

be carried

be observed when

Please

servicing

to the main

panel

supply.

of

the CD

and

and

make

tools at this

chip

ensure

can

front

of the

laser

retina.

most

of the

semiconductors

(ESD).

during

repair

can

destroy them,

you

sure

player

components are used in

out at component level

removing

any spacing
be carried out by removing

assemblies and to

panel

are connected

via

wrist

a

potential.

should also

strap

and

washers

with

then

replacing

used

remove

removed.

be

otherwise irreparable

are susceptible

or drastically reduce

to

the same

resistor.

a

this equipment.

the correct
these

components.

refitted

are

the top cover. To

the

mechanism

CD

Disconnect

to

potential

Also

keep

Should

precautions

on assembly.

gain

both

from

as

any

full

the

the

s

Top

Fig

1.

Underneath View

Cover

(Fig

1)

a)
beneath
round.

n-O

Remove

the

@-r

4

the

unit.

TRAI{$T

screws
Note

on

SCREWS

marked

reassembly

(A)

\o

L-@

lift

and

that the cover

off.

These

will

are

accessible from

only fit

one way

'F

page

7

QUAD

66

Rear

CD

Panel

service

(Fig

2) a)

data

Remove the

2

screws

(B)

from the back.

'

t

panel

Front

Removing
Board

(Fig

(Fig

2)

Display

2)

Remove the

b)

together

Lift

c)

Remove screw

a)

the

Remove the

b)

side

Lift

c)

out

Remove top

a)

Unplug

b)

Remove 2 screws

c)

Remove

d)

(see

4

screws

washers.

with

panel

rear

the

spacing

brackets.

off

with the

washer

4 screws

panel.

the

Panel.

cover

the connectors

spring

exPloded

off

(G)

through

between

Note that

and

(H)

(42),

clip

view)

(C)

from the

gently

by

(F),

together

front
(D)

and

not fitted to

pulling

display

the

the

drawer

the

panel.

(E).

inside

it

backwards.

PCB, taking

display

washers,

with

button

early

2lo each side

,

care

front

the

and

2

to each

is loose

models

bracket,

remove

to

panel.

will come

and

of the

t

Removing
Complete
Mechanism

pCB

Witn

CO

(Fig

2)

Carefully

e)

if necessary

To remove the

has

be taken

tray

on
as

a)

b)
c)

d)

e)

to

versions this

later

follows:-

Follow
Gently
Lift

not to disengage
(note

Grip
disc tray

it
upside

the uinit
transformer,

dismantling
slide

flap

that

the drawer

has

cleared

Remove the

lift

out

remove

main

the

(J)

and

the

from

down

(see

complete

the

side

CD

and

PCB

allow

to

out

is accessible

procedure

drawer

swivel

spring

at
falling
the

otherwise

6 screws

Fig

also

out

it over

of the

either

may be

front,

the

and

out,

rear slider

the disc

(L),

1), and the
front screw

the

display

ratl.

mechanism

access

with the drawer

as

far

as

to allow

pivot

fitted to either

with the

slide

bearings.

2

of
4

assembly,

to one

explained

possible.

as

it

points

fingers

it fully out,

will

tray

are

these

screws

(K)

(T)'

(on

of

lay

to

(P)

Remember

drop

accessible

through

models) the

early

retaining

the

fully open.

above.

its back.

on

or the

of the

side

underneath

tilting

out'

the

drawer

screws.(T),

proceed

lf not

Take

care

spring

it downwards

to

from underneath

(S).

mechanism).

prevent

to

lay the drawer

mains

the

once

t

page

f)

The

complete

assembly

can

now be

lifted out.

?

8

Fig

3.

(cover

Top View

removed)

QUAD

66 CD

service

data

s

J'

page

9

QUAD

66

CD service

data

Replacing
Mechansm

Fig

3. Underside

View

CD First

PCB

of

(Fig

3)

remove

Lary

a)
b) Lift PCB

(W)

Note: The

and

The

c)

Should the
adjustment

d) To replace

PCB
washers

a)

.'"

(

,1ri )

v

main PCB

the

iire

assembly upsicle

and carefully unplug the

(X), (See

and

socket

push

mechanism

CD

with

the two screws

are

exploded

(v)

is a lockable

it

down to

mechanism

CD

laser

and

mechanism

the

correctly

assembly complete

down and

view).

type.

lock.

now

can

be

current are

secure

in

the

fitted.

remove

flat

cable

Lift

the outer

removed

be

replaced it is important

set as shown

the CD

pillars

front

Front

N..

oo

as

shown

2

the

screws

(V)

and the 2

shroud

if necessary

and,

page

on

mechanism

ensuring

any

(N).

connectors

release

to

replaced.

that

the

(12).

to

main

the

spacing

t

focus

l_

^

a)

a)

\_-,/

ö

Note : When replacing
assembly
to the

necessary

be
On
on the CD
aperture.

is

correctly engaged. On

plastic

later

models rubber

mechanism,

switch connector, to separate the switch

to exert a twisting

the CD

adjustment

to allow accurate drawer alignment within

o

mechanism

early

pressure

rings

ensure that the switch

units the switch

between the

are

fitted

rod

may

link mechanism

rod

and

beneath

the

a)

link

glued

be

it may
connector.
front

screws

front

the

t.

page

?

10

QUAD

66

CD service

data

J

t

Replace

To
Bulbs

Fig 4. Display PCB
(underside

(Fig

Display

4)

view)

These

below.
to
ensure both bulbs

are accessible

Turn

the

release,

and

plastic

lift

from

the underside of the display

bulb cap approximately

These

out.
are turned

can be

ll4turn

quite

clockwise

Front

PCB,

114

turn anticlockwise,

When refitting

tight.

to engage correctly.

as

shown
please

The

Changing
Voltage

Mains

Quad

1 10/127V
main PCB,
correct
voltage ranges, 1 10V, 127V,220V

127V
supplies

a)
b) Solder

rating. Facilities

and

Remove main

t

Player is normally

CD

1 10V

PCB

assembly

shown

mains

are
are

operation the

mains input

the

240V

settings

(Japan)

the

links

as
2201240V 160 mA
1101127V

supplied

transformer can be set by

power

fuse must

provided

and

suitable

taps should be used.

as shown

below and

delay

mA

315

delay

for 2201240V

also be

for

operation

240V. However in

for most

in

fit

correctly

part

number

part

number

ac operation. For

wire links

replaced with

from four

applications but

'Dismantling

rated fuse:-

UMA16DA
UMA315D

different

practice

For

on the

the

the

'100V

for

Service'.

lmportant

Ensure rating

shows correct

plate

voltage.

v

pagel

1

QUAD

66 CD

service

data

VOLTAGE MEASUREMENTS
AND

ADJUSTMENTS

Warning

a) Equipment

b) DC Power

c) Laser

d) Focus

-

Direct

Reference

All voltages

Using

+107o

DC

Using
DC

t10%

should

Current Adjustment

track 1

across

Adjustment

track

between TP3

viewing

Required

supplies

with respect

of the

1

of

of the laser

voltage

made

be

Philips

R3501

(see

Philips

1

. DVM

2.

Hexagonal

laser

Philips

3.
measurements

to the

ground

to

(see

test

(TP1

and

fig

5)

test disc

TP4.

and

to be

avoided.

least

of at

current

test disc

circuit

0V.

fig

5)

disc

5, adjust R3520

TPZ).

5, adjust R3569

ZO

trimming

and focus

5.

diagrams

kelV

.

tool for

offset.

opposite.

to

give

to

adjusting

give

50 mV

400mV

I

I

Fig

5.

Main

Adjustment

(top

PCB

view)

Points

This

now

completes

all the

*(un

üs

o

Adjustments

2^

Front

necessary.

CHASSIS
CONNECTION

OV

t

page

t

1 2

QUAD

66 CD

service

data

{p

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NI-DISPLAY

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NC

tl

-|-l
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TI
BC | 84K

t-t t_t

t-|-l
t_|_l

l7 t8

Display Circuit

CD

-

(2195

1.

CD)

Diagram

h,

t--o-

a

a

-<,._

!

a?3

\_{L

aa

?2

?:a

P-

Power Supply Circuit

-

(3104

108

-

6294

-

130 - 2)

Diagram

page

1

3

QUAD

66 CD service

data

F

q*

I

e-

s--

113

114

116
117

118

119
121

106

Mechanism

CD
Exploded View

L

t22

123

124

F

,za

qtv

1
1

2

1

4
4

1
1
1

1

2:-

r--#-_

-

Component List
ref

item

101

Drawer

103

Cushion mount

104

Tray

105

Drive

106

Pulley

107

Guide

108

Cushion

109

Guide
1 10 Tray
1 1 1

Lever

112

Tray

belt

pin

(drawer)

pin

roller

spring

clty

1
7
1
1
1
1
1
1

2

1
1

ref

13
14
16
17
18

19
21
22
23
24

26

-al

Wl r

*y

blaJll

-ED

item

flap

CD

Flap

spring

Roller
Bearing
Tension
Spring
Spring
Spring(motor)
Tray
Tray
Tray

disc 1

(mount)

guide

motor
lever
lever

spring

page

14

QUAD

66 CD

service data

-b

.b

U

ORDERING

MECHANICAL
(EXPLODED

SPARE

VIEW)

PARTS To

reference, value
number, when
serial

PARTS

Ref Description

1
2
3
4
5

6

7

I

9

10
11
12
13
14
15

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

31
32

33
34
35
36
37
38
39
40

41
42

for modifications etc.

allow

and description

ordering spares.

number.

panel

front

CD
Side bracket
Screw

CD
Drawer front
CD
Fuse 2201240V 160
Fuse 1101127V
Rubber
Screw
Screw drive
CD
Screw

Washer

Cover assembly

M3xG mm

Mains

switch

mains

connector

adjustment

M3x8 mm Sup

player

mechanism

M3x45 mm Pos

Belleville
Mains

Mains
Flex

Screw drive
Flex
Flex
Rear
Solder tag
Nut M3 Hex
Shakeproof
Main PCB
Plain rubber insert
CD chassis
Cover screw
Display
Screw drive
Transit
Transit
Screw drive 6AxG
Window mask
Bulbs
Window

Drawer
Escutcheon
Receiver
Receiver
Drawer
Drawer
Mains
Clip

copper

684
transformer
transformer CSA

connector 3

connector 6
connector

panel

(screened)

M3

assemby

screw
screw

(backlit

(front

open/close

assembly

retainer
open/close
open/close

on/off button

(switch

please quote

assembly

Pan

Sup
link

grey

mA

delay

mA

315

4x10

washer

Plated

(with

way

4x10

way

7 way

Bzp

St

washer

M3x10

mm

4x6

RH thread
LH

display)

panel)

(open/close

PCB

delay

ring

Pan

mm AB

Pan Hd Bzp
Bzp

St

'1

1

0-240V

version

damping)

mm

Csk

M3

St

for foot

mm

(complete

pan

thread

pan

mm

button

(early

models)

switch

switch

to CD

assy

well

as

product

Also

St

Bzp

St

Pos

Int

pan

sup

PCB)

black

(silver)

(gold)

black

Button)

inc PCB

mech.)

component

as the

120V

part

model

and

Qty

1

2

17
1
1
1
1

1
2
2
3

1
4

4

5

1
1
1
1
1
1
1
1
1
1
13
1
4t5
1
4

'1
2

2
2
2

1

2

1
1
1
1
1
1
1
1

'1

Part No.

QCDFPAG

M221924

TM306PA

M215514
M21543G
M459934
UMA1 6DA
UMA31 5D
M20172M
TM3OSPA
TC41

OPF
QCDMECH
TM345PA
TD73206
TDB6NPA
LXCDEUR
LXCDCSA
Q66COVG
QCDCA83
TC41

OCB
QCDCAB6
QCDCABT

MCDRPSl

FTM331A
TM3FHPA
TDM3NLA
QCDPCBl

M20172A

M215054
TM31

OPA

QCDDISP
TC4O6PA

M221114

l\422111X

TC6O6PB

\4222914

BB515MB

MCDDWIP

M21 153C

MCDDW2S

QCDREMR

ATO503A

S44INPA

OCDPCBS

4A

M2137
FC0021 A

b

page

17

QUAD

66 CD service

data

ACCESSORIES

MISCELLANEOUS

Ref
1

Remote

2

Battery

3

Mains lead

4

Mains lead

5

Signal

6

Signal

Ref

1

Screw

2

carton 66/CD

3

CD

4

Instruction

5

Service

Description

control unit

1.5V

AAA
(0.6m)
(1

.5m) free

lead

Phono

lead

Phono

Description

(inc

kit

Eperan

pack (Polystyrene)

booklet

manual

(R1)

size

as supplied

end

(0.5m)

as supplied

(1m)

cover screws)

(English)

|
i

I

Qty
1

3

1
1
1
1

Qty
1

1
1
1
1

Part

No.

QCDREMA
N1

VsAAA

QSPRSO6

MsA

QRS1
QP2P2SA
QP2P21A

Part No.

QCDSCR2
ZC6CDl
ZXCD1 AA
OICDl EC
OSCD1 EC

A

--

page

T

-

18