QUAD QauAD66 Mounting instructions

'.-
\at
'5
auAD66
Compact
DiscPlayer
Service
Data
QuadElectroacoustics
Ltd
St.PetersRoadHuntingdon
Cambs
PE18
7DBEngland
Telephone
048052561
Fax
0480
413403
-r OSCDIED

ü coNTENTS
QUAD
66CDservice
data
Page
4
5
6
7
7
7
-
Introduction
-
Specification
Brief
Operation
CDPlayer
SimpleBlock
Diagram
Service
Hints
Dismantling
For
Service
Removing
Top
Cover
Removing
Rear
Panel
Removing
Front
Panel
Removing
Display
Board
Removing
PCB
CompleteWith
CD
Mechanism
CDPlayer
Layout
Replacing
CD
Mechanism
Replacing
Display
Bulbs
Changing
Mains
Voltage
Voltage
Measurements
and Adjustments
Laser
Current
Focus
Offset
Power
Supply
Circuit"Diagram
CDDisplay
CircuitDiagram
CD
Mechanism
Exploded
View
CD
CircuitDiagram
GDPlayer
Exploded
View
Parts
Lists
Mechanical
Accessories
8
8
8
8
9
10
11
11
12
5
12
12
13
13
14
15
16
17
17
18
18
v
Miscellaneous
page
3

QUAD
66CD
service
data
3
INTRODUCTTON The
Quad
CD
player
is
designed
fortheserious
musiclistener.
lthas
the
minimum
number
of
controls
and
funclionsontheassumption
thatthe
serious
music
listenerwishesto
hearmusic
in
the
order
inwhichitwas
writtenand
willnormallystart
fromthe
beginningof
adisc.Howeversimple
programming
permits
tracks
tobeselected
and
played
inanysequence.
The
player
discdrawer
willaccept
compactaudio
discs
in
the
'normal'
and
'CD
single'
format
withoutanyspecial
adapters.
Themainoperating
controls
areseparated
fromthe
player
andall
major
functionsareavailable
viaa
remotecontrol
unit,acompact
hand
held
type
being
suppliedas
standard
More
than
one
remotecontrol
canbeused
and
itisnotnecessarytopoint
theunit
attheCD
player
as
isoftenthe
case
PerformanceoftheQuad
CD
player
isasaccurate
asitis
possible
to
achieve
bycareful
design,
selectionof
componenls
andrigoroustest
orocedures.
BRIEFOPERATING o Switchon.
INSTRUCTIONS O Press
drawer
button.
Thedrawercompartment
willopen.
a Placedisc,
labelside
up,
in
drawer
compartment.
a Gently
push
frontoldrawer.
ltwillcloseby
itself.
a Thedisc
willnowstart
to
play
fromthebeginning
O Forfullremote
control
operation
andtrack tt
programmingrefertoappropriate
section
ofinstruction
book.
page4
v

0 sPEcrFrcATroN
Main
Unit OPeration:
ü
tr
\J
QUAD
66CDservice
data
Fullfunction
byinfraredremote
control
or
simpledirect
toplay
operationwithout
remote
control.
Number
ofchannels: 2
Frequency
response: 20- 20,000
Hz.
Amplitude
linearity: +/-
0.1dB 20
- 20,000Hz.
Phaselinearity: +/-
0.5deg20
-20,000
Hz.
Dynamic
range: 96dB 20
- 20,000Flz.
Signal/noiseratio: 96dB 2A
- 20,000Hz.
Channel
separation: 93dB 20
- 20,000Hz.
Totalharmonic
distortion: 0.003% 20- 20.000Hz.
Wow
and
flutter: Below
measurementlevels.
DiA
conversion: Quadruple
oversampling
(176.4kH2)
with
digital
filter
andtwo16-bit D/A
converters.
Error
correction
system: Cross interleaved
Reed
Solomon
Code
Audio
Output:
(crRC).
2V rms
max.
300
mV
on
normal
programme
material.
Minimumloadimpedance
10
kO.
Optical
readout
system: Laser
semi-conductorA/GaA
wavelength
800
nm.
Samplingfrequency. 44.1kHz.
Digital
output: For
digitalsignal
processors.
Remote
control
Interface: RC-s
system.
Mainsvoltage: 1
'10V,127V,220V,240V
(changed
by
links
on
PCB)
50-60
Hz. See
rating
plate
on
player
back.
Power
consumption: 25W
approx.
Dimensions: Width
321
mm;height
80
mm;
depth
275
mm. approx.drawer
opens
by
145
mm
approx.
3.5
kg
approx.
\y
Weight:
page
5

QUAD
66CDservice
data
RemoteControl l System:
Dimensions:
Weight:
Battery
life:
Battery
type:
Infrared.
Width
48mm;length174mm;
thickness
22mm approx.
1009
(inc
batteries)approx.
One
year
approximately
with
normal
operation,usingalkaline
cells.
ThreeAAA
size
alkalinecells.
Therightis reseruedto alterperformanceand specificationsas required.
CD
Player
Simple
Block
Diagram
Thiscompactdiscplayer complieswiththeradiointerterencerequirements A
as taiddownin EEC (EuropeanEconomicCommunity)
regulations. !
t
CD MECHANISM
QCDMECH
MAINPCBQCDPCB1
page
6
AUDIOOUTPUT MAINSINPUT
v

*J senvrcE
HINTS
ElectrostaticPrecautions
(ESD)
DISMANTLINGFOR
SERVICE
Top
Cover
(Fig
1)
Fig
1.
UnderneathView
s
QUAD
66CDservice
data
Warning
avoiddirect viewingof the laser
otherwiseirreparable
damagemayoccur to theeyeretina.
All
thelC's fitted
and
most
ofthe
semiconductors
aresusceptible
to
electrostatic
discharges
(ESD).
Carelesshandling
during
repair
can
destroythem,
ordrasticallyreduce
theirlife.
when repairing,
make
sure
you
areconnected
to
thesame
potential
as
the
mass
of
theCD
player
via
awrist strap
with
aresistor. Also
keep
components
and
toolsatthis
potential.
Surfacemounted
chip
componentsareusedin
thisequipment.
Should
any
servicing
becarried
outatcomponentlevel
then
thecorrect
precautions
must
beobservedwhen
removing
and
replacing
these
components.
Note:
Please
ensure
anyspacing
washers
used
are
refitted
onassembly.
Simple
servicing
can
becarriedoutbyremoving
thetopcover.To
gain
full
access
tothemain
assembliesandto
remove
the
CD
mechanism
both
the
rear
panel
and
front
panel
shouldalso
be
removed.
Disconnect
from
the
mains
supply.
a) Remove
the
4 screws
marked
(A)
and
lift
off. These
are
accessiblefrom
beneath
the
unit.
Note
on
reassembly
thatthecover
will
onlyfit
oneway
round.
n-O
TRAI{$T
SCREWS
\o
@-r L-@
'F
page
7

QUAD
66CD
service
data
Rear
Panel
(Fig
2) a) Removethe
2 screws
(B)
fromtheback. t '
b) Removethe
4 screws
(C)
fromthe
inside
,2lo eachside
bracket,
together
with
washers.
c) Lift
the
rear
panel
off
by
gently
pulling
it
backwards.
Front
panel
(Fig
2) a) Removescrew
(G)
through
the
display
PCB,taking
care
to
remove
the
spacing
washer
between
the
display
and
the
front
panel.
b) Removethe
4screws
(F),
together
with
washers,
2toeach ofthe
side
brackets.
c) Lift
off
the
panel.
Notethat
the
drawer
button
isloose
and
willcome
out
withthe
Panel.
Removing
Display a) Removetop
cover
and
front
panel.
Board(Fig
2) b) Unplug
theconnectors
(D)
and
(E).
c) Remove
2screws
(H)
d) Remove
spring
clip
(42),
notfittedto
early
models
(see
exPloded
view)
e) Carefully
lift
out
the
complete
display
assembly,
ifnecessary
remove
side
ratl.
Removing
pCB Toremovethe
main
PCB
and
CD
mechanism
(on
early
models)the
drawer
Complete
Witn
CO tray
has
to
betaken
out
to
allow
access
toone
of
the
retaining
screws.(T),
Mechanism
(Fig
2) on
later
versionsthis
isaccessible
withthedrawer
fullyopen.lfnot
proceed
as
follows:-
a) Follow
dismantling
procedure
as
explained
above.
b) Gently
slide
the
drawer
out
as
far
as
possible.
c) Lift
flap
(J)
and
swivel
itover
toallow
it
tolay
onitsback.Take
care
nottodisengage
either
ofthe
pivot
points
(P)
orthe
spring
(S).
(note
that
the
spring
maybe
fittedtoeither
side
ofthe
mechanism).
d) Grip
thedrawer
at
the
front,
withthe
fingers
underneath
to
prevent
the
disctray
from
falling
out,
and
slide
itfullyout,
tilting
itdownwards
once
it
has
cleared
the
rearslider
bearings.
Remember
to
laythedrawer
upside
down
otherwise
thedisc
tray
will
drop
out'
e) Removethe
6screws
(L),
2of these
are
accessible
fromunderneath
theuinit
(see
Fig
1),andthe
4screws
(K)
through
the
mains
transformer,
also
the
frontscrew
(T)'
f) The
complete
assembly
can
nowbe
liftedout.
t
t
page
8
?

Fig
3.
TopView
(cover
removed)
QUAD
66CD
service
data
s
J'
page
9

QUAD
66CDservice
data
Replacing
CD First
remove
the
mainPCB
assemblycomplete
as
shown t
Mechansm
(Fig
3) a) Lary
iire
assemblyupsicle
downand
remove
the
2screws
(N).
b) LiftPCB
andcarefullyunplugthe
flat
cable
(V)
andthe2 connectors
(W)
and
(X),(See
exploded
view).
Note: The
socket
(v)
is
a lockable type. Lift
theouter
shroud
torelease
and
push
it
downto
lock.
c) The
CDmechanism
can
now
be
removed
and,
ifnecessary
replaced.
Shouldthe
CD
mechanism
be
replaceditisimportant
that
the
focus
adjustment
and
laser
currentare
setasshown
onpage
(12).
d) Toreplace
the
mechanism
secure
theCD
mechanism
to
the
main
PCB
with
thetwoscrews
in
the
front
pillars
ensuring
any
spacing
washers
are
correctly
fitted.
Front
Fig
3. Underside
View
of PCB
Note: Whenreplacing
theCD
mechanism
ensurethattheswitch
link
assembly
is
correctlyengaged.Onearly unitstheswitch
rod
may
be
glued
tothe
plastic
switchconnector,toseparatetheswitch
linkmechanism
itmay
benecessary
toexertatwisting
pressure
betweentherod and
connector.
Onlater
modelsrubber
adjustment
rings
are
fitted
beneath
the
front
screws
ontheCD
mechanism,
toallowaccuratedraweralignmentwithin
the
front
aperture.
l_
t.
?
a)
( ,1ri)
v
a)
^
.'"
ö
N..
oo
o
a)
\_-,/
a)
page
10

tTo Replace
Display
Bulbs
(Fig
4)
Fig4. DisplayPCB
(underside
view)
Changing
Mains
Voltage
lmportant
Ensurerating
plate
showscorrect
voltage.
These
areaccessible
from
theundersideofthedisplay
PCB,
as
shown
below.
Turn
the
plastic
bulbcapapproximately
114
turnanticlockwise,
torelease, and
lift
out. These canbe
quite
tight.Whenrefitting
please
ensurebothbulbs
areturned
ll4turnclockwise
toengagecorrectly.
The
Quad
CDPlayerisnormally supplied
for2201240V
acoperation.For
110/127V
operationthe
mains
transformercanbesetby
wirelinks
onthe
mainPCB,
the
mainsinput
power
fusemust
alsobe
replacedwith
the
correct
rating.Facilities
are
provided
for
operation
fromfour
different
voltageranges,110V,127V,220V
and
240V.Howeverin
practice
the
127V
and
240V
settings
are
suitable
formost
applicationsbut
for
'100V
supplies
(Japan)
the
110V
tapsshouldbeused.
a) Removemain PCB
assembly
asshown
in
'Dismantling
For
Service'.
b) Solder
links
as
shown
belowand
fit
correctly
ratedfuse:-
2201240V 160mA
delay
part
number
UMA16DA
1101127V
315
mA
delay
part
number
UMA315D
QUAD
66CDservice
data
J
t
Front
v
pagel
1