'.-
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auAD66
Compact
Disc Player
Service
Data
Quad
Electroacoustics
Ltd
St. Peters Road Huntingdon
Cambs
PE18
7DB England
Telephone
0480
52561
Fax
0480
413403
-r
OSCDIED
ü
coNTENTS
QUAD
66
CD service
data
Page
4
5
6
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-
Introduction
-
Specification
Brief
Operation
CD Player
Simple Block
Diagram
Service
Hints
Dismantling
For
Service
Removing
Top
Cover
Removing
Rear
Panel
Removing
Front
Panel
Removing
Display
Board
Removing
PCB
Complete With
CD
Mechanism
CD Player
Layout
Replacing
CD
Mechanism
Replacing
Display
Bulbs
Changing
Mains
Voltage
Voltage
Measurements
and
Adjustments
Laser
Current
Focus
Offset
Power
Supply
Circuit"Diagram
CD Display
Circuit Diagram
CD
Mechanism
Exploded
View
CD
Circuit Diagram
GD Player
Exploded
View
Parts
Lists
Mechanical
Accessories
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Miscellaneous
page
3
QUAD
66 CD
service
data
3
INTRODUCTTON
The
Quad
CD
player
is
designed
for the serious
music listener.
lt has
the
minimum
number
of
controls
and
funclions on the assumption
that the
serious
music
listener wishes to
hear music
in
the
order
in which it was
written and
will normally start
from the
beginning of
a disc. However simple
programming
permits
tracks
to be selected
and
played
in any sequence.
The
player
disc drawer
will accept
compact audio
discs
in
the
'normal'
and
'CD
single'
format
without any special
adapters.
The main operating
controls
are separated
from the
player
and all
major
functions are available
via a
remote control
unit, a compact
hand
held
type
being
supplied as
standard
More
than
one
remote control
can be used
and
it is not necessary to
point
the unit
at the CD
player
as
is often the
case
Performance of the Quad
CD
player
is as accurate
as it is
possible
to
achieve
by careful
design,
selection of
componenls
and rigorous test
orocedures.
BRIEF OPERATING
o Switch on.
INSTRUCTIONS
O
Press
drawer
button.
The drawer compartment
will open.
a
Place disc,
label side
up,
in
drawer
compartment.
a Gently
push
front ol drawer.
lt will close by
itself .
a
The disc
will now start
to
play
from the beginning
O
For full remote
control
operation
and track
tt
programming refer to appropriate
section
of instruction
book.
page
4
v
0
sPEcrFrcATroN
Main
Unit
OPeration:
ü
tr
\J
QUAD
66
CD service
data
Full function
by
infrared remote
control
or
simple direct
to
play
operation without
remote
control.
Number
of channels: 2
Frequency
response:
20 - 20,000
Hz.
Amplitude
linearity:
+/-
0.1 dB
20
-
20,000 Hz.
Phase linearity:
+/-
0.5 deg 20 - 20,000
Hz.
Dynamic
range:
96 dB 20 - 20,000 Flz.
Signal/noise ratio:
96 dB
2A
-
20,000 Hz.
Channel
separation:
93 dB
20
-
20,000 Hz.
Total harmonic
distortion: 0.003% 20 - 20.000 Hz.
Wow
and
flutter:
Below
measurement levels.
DiA
conversion:
Quadruple
oversampling
(176.4kH2)
with
digital
filter
and two
16-bit
D/A
converters.
Error
correction
system:
Cross
interleaved
Reed
Solomon
Code
Audio
Output:
(crRC).
2 V rms
max.
300
mV
on
normal
programme
material.
Minimum load impedance
10
kO.
Optical
readout
system: Laser
semi-conductor A/GaA
wavelength
800
nm.
Sampling frequency.
44.1 kHz.
Digital
output: For
digital signal
processors.
Remote
control
Interface:
RC-s
system.
Mains voltage:
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
66
CD service
data
Remote ControllSystem:
Dimensions:
Weight:
Battery
life:
Battery
type:
Infrared.
Width
48 mm; length 174 mm;
thickness
22
mm
approx.
1009
(inc
batteries) approx.
One
year
approximately
with
normal
operation, using alkaline
cells.
Three AAA
size
alkaline cells.
The
right is reserued
to alter
performance
and specifications as
required.
CD
Player
Simple
Block
Diagram
This
compact disc
player
complies
with
the
radio interterence requirements
A
as
taid
down
in EEC
(European
Economic Community)
regulations.
!
t
CD MECHANISM
QCDMECH
MAIN
PCB
QCDPCB1
page
6
AUDIO OUTPUT
MAINS INPUT
v
*J
senvrcE
HINTS
Electrostatic Precautions
(ESD)
DISMANTLING FOR
SERVICE
Top
Cover
(Fig
1)
Fig
1.
Underneath View
s
QUAD
66
CD service
data
Warning
avoid
direct viewing
of the
laser
otherwise irreparable
damage may
occur to the eye
retina.
All
the
lC's
fitted
and
most
of the
semiconductors
are susceptible
to
electrostatic
discharges
(ESD).
Careless handling
during
repair
can
destroy them,
or drastically reduce
their life.
when
repairing,
make
sure
you
are connected
to
the same
potential
as
the
mass
of
the CD
player
via
a
wrist
strap
with
a
resistor.
Also
keep
components
and
tools at this
potential.
Surface mounted
chip
components are used in
this equipment.
Should
any
servicing
be carried
out at component level
then
the correct
precautions
must
be observed when
removing
and
replacing
these
components.
Note:
Please
ensure
any spacing
washers
used
are
refitted
on assembly.
Simple
servicing
can
be carried out by removing
the top cover. To
gain
full
access
to the main
assemblies and to
remove
the
CD
mechanism
both
the
rear
panel
and
front
panel
should also
be
removed.
Disconnect
from
the
mains
supply.
a)
Remove
the
4
screws
marked
(A)
and
lift
off.
These
are
accessible from
beneath
the
unit.
Note
on
reassembly
that the cover
will
only fit
one way
round.
n-O
TRAI{$T
SCREWS
\o
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