Sony MEGA BASS CFD-DW83 User manual

SERI|ICE
MANIJAL AEP Model
UK Model
E Model
Photo:
AEP
model n reABll$s
SPECIFICATIONS
CD
player
sectlon
Syslom Compâct
dlsc
dlgltal
audlo
system
Laser
diode
prooerties
Material:
GaAlAs
Wavolength:
780nm
Emission
duration:
Conllnuous
Laser
outout:
Less
than44.6
rrW'
'This output
is thevalue
msasursd
at a
distance
of about
200mmfiom the
objective
lenssurtacs
on lhe opticâl
pick-up
block
2OOr.p.m:
to 500r.P.m.
(CLV)
Sony
Super
Strategy
Cross
Intarlsavê
Bead
Solomon
Corde
2
20
- 20,000
Hzli dB
Below
maasurable
limit
. Toral
withTYPE
| (NORMAL)cassette:
60
- '10,000
Hz
. Playback
with
TYPE| (NOBMAL)
cassatte:
60
- 12,000
Hz
Fullrangespeakers:
10cm dia.,
Super
wooler:
I cm dia.
Full-range
speakers:
2.5W + 2.5
W (at6
ohms,
315Hz, 100/oharmonic
distortion)
Super
wooter:
7 W (at6 ohms,100Hz'
10o/oharmonic
disiortion)
Mixing
microphono
input
jack(minijack)
sensitivity
2.5 mv
Forlow impedance
microphone
Twolineinput
jacks
(Phono
jacks)
Sensitivity
0.3V
Input
impedance
47 kilohms
or higher
Headphones
jack(stereominiiack)
For16
- 68 ohmsimpedance
headohones
TwoCD output
iacks
(Phono
jack)
Load
impedance
10kilohms
or higher
Ratedoutput
'l
.26
V rmsat load
imDedance
47 kilohms
- Continued on next Page
-
Frequency
response
Speaker
Power
outpul
Inputs
Outpuls
Spindle
speed
Error
correction
Number
of channels
Frequency
response
Wowandllutter
Radio
section
Frequency
range
Antennas FM:
Telescopic
antenna
AM: Built'in
lerrite
barantenna
Tape recorder
sectlonand general
Recording
system 4-track
2-channel
stereo
Fastwinding
time Approx.
2 min withSony
casselte
C60 CD
RADIO
CASSETTE.CORDER
Model
NameUsing
Similar
Mechanism
CDSection NEW
Tape
Section NEW
9q{"3r_D_"1'j:
f3T_"_
Tape
Transport
Mechanism
Type
KSM-150BGN
-oEcr
À-
mr--ôwæPBbt
DECKB MF.DW83RP.62
Sales
areâ FM AM
AEP, UK model 87.ô
- 107
MHz 531
- 1602
kHz
Itâlian model 87.5
- 108
MHz 526.5
- 1606.5
kHz
Saudi
Arabia model 87.6
- 107MHz 530
- 'l605
kHz
E model 87.6
- 108
MHz
EF]
lMlcRoFlLM
ISONY

Powerrequirements 12VOC,
oight
R20
(slzo
O)bettorles
torCDradlocasselte.corder
4.5V
DC,thre6R6
(slze
AA)batteries
for
clocUtlmer
Batt€rylife Batt€risstor radio cassolte-corder
636.5
x211 x226 mm (w/h/d)
(25!/rx${sx9;ns6q5;
incl. poôcting parts and controls
Approx. 8.3 kg, incl. battories
(Approx. 18 lb 4.8 oz)
AC poworcord (1)
Specifications
TABLEOF CONTENTS
Title
SERVICING
NOTES
ModelIdentification
NotesonHandling
theOpticalPick-up
Blockor BaseUûit
ChuckPlate Jigon Repairing
GENERAL
Location
andFunctionof Controls . . . . .
Section Page
1.
2.
Dimensions
Wsight
Suppliedaccsssory
Note
This appliancsconlorms with EEC Diroctivos761889
end O2l499
rsgardinginlerfsrsnce
suppression.
Designând spsciticationssubject
lo changowithout
notice.
SAFÊTY.RELATED
COMPONENT
WARNING!
t
COMPC'NENTS
IDENTIFIEDBY MARK A ON OOTTEO
LrNÊW|TH
MARK a ONrHE SCHEMAÏC
DTAGFAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE
THESE COMPONENTS
WITH
SONY PARTS WHOSEPART NUMBERS
APPEAR AS
SHOWNIN ÎHIS MANUAL OR tN SUPPLEMENTS
PUB.
LISHED BY SONY.
Settingthe Clock
Usingthe Built-in Timer
3. DISASSEMBLY
4. ADJUSTMENTS
4-1. Mechanical
Adjustment ...... l0
4-2. Electrical
Adjustments ....... 11
Tape
Recorder
Section. ..... 11
Radio
Section .....12
CDSection .......14
5. DIAGRAMS
5
o
o
5-1. Radio, Audio Section
Block Diagram ....
5-2. CD SectionBlock Diagram
5-3. Radio SectionPdnted Wiring Boardsand
Schematic Diagram
5-4, Tape RecorderSection
SchematicDiagram ......... 27
5-5. Power
Amp,Power
SupplySection
SchematicDiagram ......... 30
5-6. Tape
Recorder,Power
Amp,Power
Supply
SectionPdntedWiringBoards.
. . . . . . . . 33
5-7. CDSection
SchematicDiagram
......., 37
5-8. CDSectionPrinted
Wtuing
Board
. . . . . . . 4l
6. EXPLODEDVTEWS. .......46
7. ELECTRICAL
PARTS
LIST......... 56
l8
2l
Requirem€nts
UK model 240VAC.
50Hz
AEP model 220VAC.50Hz
Emodel 110-120V,
220-240VAC,
ad,iusrâbl€,
50/60H2
Power
consumptlon
UK model 30w
AEP model 28W
E model 35W
Recording Playback CD playing
SonySUM-I
(NS) approx.2.5H âpprox.2H approx.lH
SonyAlkaline
AMl (N) approx.
3.5H approx.
3H approx.I.5H
-2-

sEcTtoN
1
SERVICING
NOTES
MODEL
IDENTIFICATION
UK model
AC: 240V-50H2 30W
E SaudiArabianmodel
AC: 110
- 12O,/22O
- 240V-5O,/60H2
35W
CAUÏION
Use
of controlsor adjuslmenlsor performance
of procedures other than thosespecifiedherein
may resultin hazardousradiation
exposure.
NOTES
ON HANDLING
THE OPTICAL
PICK-
UPBLOCKOR BASEUNIT
The laser diode in the optical pick-up block may
suffer electrostatic
breakdown
because
of the poten-
tial difference
generated
by the charged
electrostatic
load,
etc.
on clothingand
thehuman
body.
During repair, pay attention to electrostatic
break-
down and also use the procedure in the printed
matterwhlch
tsincluded
rn
the
repair
parts.
The flexible board is easily
damaged
and shouldbe
handled
with care.
NOTES ON LASER DIODE EMISSION
CHECK
The laserbeam on this model is concentrated
so
as to be focused
on the disc
reflective
surlace
by thc
obJective
lens in the optical pick-up block. There-
fore, when checking
thelaser
diodeemission.
observe
more
than
25cmawayfrom
theobjective
lens.
LASER DIODE AND FOCUS SEARCH
OPERATION CHECK
I. Turn POWER switch on with no disc
insertedand
makeFunction
switch
to CD position.
2. Openthelid for CD.
3. Turn on S702 asfollowing figure.
4. Press
) key.
5. Confirm the laser diode emissionwhile observing
the objecting lens. When there is no emission,
Auto Power Control circuit or Optical Pick-up is
broken.
Objective lens moves up and down three times for
the focussearch.
Turn on S7O2with
a slenderscrewdriver.
MODEL
NO.CFD-DW83
CD
RADIO
CASSETTE.CORDER
12V
-_ FLASHLIGHI
BATTERY
R2O
SIZEDX8 OR EOUIVALENT
4.5V
:_ FLASHLIGHT
BATTERY
(COMPUTER//CLOCK)
R6 SIZE
AAX3 OR EOUIVALENT
MADEIN JAPAN
AEPmodel
AC: 220V-50H2 2B\N
-3-

CHUCK
PLATEJtG ON REPAIRING
On repairing CD section, playing a disc without the
CD lid, useChuck Plate
Jig.
. Code number
of Chuck
PlateJig:
X-4918-255-l
NOTE ON REPAIRING
The spindle
motor (M702) and
theturntable
assem-
bly are
individually
supplied
as
repair
parts.
When repalringM702, please
order the turntable
assembly
together.
Dimension
isas
follows.
i9.410.lmm
spindle
molor (M7O2)
-4-

CFD-DW83
Ëe
9l
;E T
>;- - ='
Eg:ËE
E;:ii
c g i:ë
Ë
Elg'e
;EiËE
+ËieF
eËE'i
Ë
iË!-EÊ
o
I
z
g
à
ï
€F
Eç
Eo
Ëst
2
3
s
.ç
6
t
à
E
Po
4=
>E
a-E;;
=P *
-f
Es
o Adt
eË Ia
âo =d
Ef "3Êà: E2z
EË E=E=
ag à.:
èË
ËË=Ëg*È
Ë
ÊËliE fi
=ù B Èôtr à
P
la
'.F,9
El/^r
+)
st p
9E rr 1
oË Y
ô9 3l
:-g i I
CD
2nt
=Ê
N*
{ ---r-
E ,Ë:àl
HIF
EË -;';
:3
I
-tP
È;

o
ô^
gË t
29
:g
è
.0
9!
tÈ
çÈ
;
Â
e
È
o
=
Ë:
êE
ÈË è
'EE"E
c> I :
Ë8È:
r3ÉE
<ir ç !r,
3cÈâ
E= 5 -
3
i
ËF
-:_ P
:8aË
Ë E€ g
ç tË *
Ën!isE
E F...!:sg
ËË!iiiiÏi
2
a
E
E
:
',
8.9 a
F=Ë
lÈ sE
h :r =È
; :g ;r
:;sÈËunË
.Eo'fi'?^
u-l = ^ r ^ i I
E
o
s
E
, 96
s ià
9 E;
s fÈ e
ËB Ë
ÊE:
!e €
rts
tÉl
I Ol
t6l
I!,I
l.')l
tol
tql
tot
tclj
LI
sEcTtoN
2
GENERAL
r
E
è
u,
F
a
E
;.o
-o
o
.9
;
o
0
J
(J
-
9 >9
Ë B€
ËaÉ!
> R(,)€
ËÈ?ÈgÈ
Ë;ËËEgË
I
o.g ô
Ez Âa
Ë " Ë
i
gË
. : ç e
à€
a 6 :;:ۈ
! T HèJ;t
â Ë êEEÈE-
s t Ê:Ë$s*
3;E
sËËËËË'
g slËËËPrFE
i 42;EP-
ë;
È 3i'ââai33
t
I
!
.3
o
5.
È;
9eE
!Je
FEË
E:E
Ex*È*
,:e
e
g
Ë!
ËË
z
ô
Èi
5E
'6E
Ëg
Èts
lz
^ Y=
c9;ii
; tàêa
;;;rvo
Eu
50
è9
iz
aâ
Ë
@
0
-
Pu
-n>
ht: è9
t:J :i ==
tLq '' Ȁ
r.sr p È
-5-

4.2. ELECTRICAL
ADJUSTMENTS
TAPE RECORDER
SECTION
PRECAUTION
l. Adjustments should be performed in the order
given.
Generally playback circuit adjustments should be
completed before performing recording circuit
adjustments.
2. Adjustments should be performed for both L ch
and R-ch.
Switches and controls should be set as follows
unless
otherwisesPecified.
a Positionsof switches
and control knobs
FUNCTION ....... TAPE
ISS ... .....2
DIRECTION
MODE,. .... ?
GRAPHTC
EQUALIZER... ' mechanical
center
MEGA BASS . . scale5
BALANCE . mechanical
center
odB- 0.775V
Frequency difference between FWD and REV should be within
r.5%.
Adiusimont Localion: TC board
Short-circuil with
a screwdriver
for the
highspeedadjustment.
ad-
the
\
CNP121_L
TÏ
,uilZ
o'c*
e{
Eyi33i
ii?;idt</
n.n, o I RV308 (normal)
"-''' " I RV309 (hish)
-
Tope
speed
Adlustment
FEEK Al TDFCK
Bl
Procedure:
Mode : FWD playback
test
tape
ws-48A
(3
kH2.0dB)
Perform high speed
iustment
Play back the test
specifications
below.
Adiustm€nt
Valuer
speed
checker
or
32l? trequency
counter
PHONES
jack
adjustment before mormal speed
tape WS48A and adjust to meet
speod deck Adiustmenl
pan t€st
pin
cN121
speedchscker
heading
frrquancy
counlea
reading
high RV307 short 4.17to
+O.l'77"
6,000t
10Hz
BRV3O9
normal RV306 open -0.1'7
ro
+O.l'l% 3,000t5
Hz
BRV308
a Standa rd input level
Input Pin Mtx Mlc LINE
IN
Signalsource
imPcdance 300
n10kn
lnput signallevel 0.775
mV
(-60 dB) 0.436
V
(-5 dB)
Frequency I kHz IkHz
a Standard
output level
Outpul Pin SP OUT (L.R} PHONES
Signal
source
impedance 6s} 32n
Output signâl
level 0.775
V
(0dB) 0.245
V
(- 10
dB)
. Test tape
T6st Tapo Signâl Usedfor
ws48A 3kHz,
0dB Tape speedadjustment
P4-A063 6.3
kHz,
-10
dB Headazimuth adiustment

Record,/Playback Head Azimuth Adjustment
lpFcK
Al l-pFcK
Bl
Procodure:
l. Mode: FWD playback
testtape
P4-A063
(6.3
kHz,
-10
dB)
RADIO SECTION
See
page
13for AdjustmentLocation.
FUNCTIONswtich: RADIO
IAM]
BANDswitch:AM
FM
RFSSG Put th6 lêad-wirs
antenna closg to
ths sst.
t
pHONES
iack
Turn the adjustmentscrew for the maximum output
levels.If theselevelsdo not match, turn the adjustment IFM]
30% amplitud€
modulation by
400 Hz signal
Output level:
aslow as
Possible
BANDswitch: FM
22.5 kHz lr€quency
dsviâlion by 400 Hz
srgnal
Output level: as
low as
possible
ro
CN3
(ANT
IN)
. Rcpcat thc procedurc3 in cach adjustmcnt
severaltime3,and thc frcqucncy covcragcand
lrackinS
adjustmcntsshould
bc finallydoncby
thètrimmer
câpacitors.
3. Phase Check
Mode : playback
lesÎ lape
P-4.AO63
(6.3
kHz,
-10
dB)- _
LCH
Screon
pattorn
e@@os
In ph.. 46. 90. r36c t8O.
good vaonS
4. Set in the REv mode
and repectthe slep I to 3.
5. After the adjustment,
lock the screws with locking
compound,
Adjustmsnt Locltion : Record,/Playback head
AM RF SSG
o6cillo6copa
PHONES
jack
PHONES
jack
AM FREOUENCYCOVERAGEADJUSTMENT
Adjust for a maximum readina on VTVlvl
T1 Ercept ltaliatr: 518 kHz
Italiar | 516 kHz
cT14 Except Italian : 1,680kHz
Italian: 1,630kHz
AM TRACKINGADJUSTMENT
Adiust for a maximum readins on VTVI\4
620 kHz
cT1-3 1.400 KHz
FM FREOUENCYCOVERAGE
ADJUSTMENT
Adjust for a maximum reading on VTVIVL
L2 E : 86.5 MHz
AEP, UK, Italian, Saudi Arabia: 87.35 MHz
ctt2 E : 109.5MHz AEP.
ItK, SâudiArabia: 107.8MHz
Italian: 108.25MHz
FM TRACKINGADJUSTMENT
Adjust for a maximum readirg on VTVlvl
L1 E : 86.5 MHz
AXP, IrK, Italian, Saudi Arabia: 87.35 MHz
cT1-1 E : 109.5 MHz AEP. IIK. Saudi Arabia: 10?.8 MHz
Italian : LO8.25M}Iz

oIFM VCO ADJUSTMENTI
Procaduro:
FM NF SSG
0.AOl
pF rctoin@
C.rrirr Frcqurncy: Accordingto the color of the mark on
ceramic
filter (CF2).
Output L!v.l: 80 - 90dB
1) Adjust with RV1 so that the readingon the frequency
counter
becomes?6.0
t0.3 kHz.
IAdjustments
Location]
Adiustment Locationl
IRsdio Boârdl
AM TrackingAdiudmont
cT1.3
L1 cTl.1
FM Trrckino Adiunment
o
FM
Frequency
Covrraga
Adiunm.ni [crt-z
tLz-
isas:i
M.rk Crraiar Frtquancy
red 10.7 MHz
blue 10.6?MHz
orange 10.73
MHz
black 10.64MHz
white 10.76MHz
-13-
o

lîosecrroNI
NotesonAdjustment
l Performadjustmentin servicemode.
After adjustment,be sure to releaseservice
mode.
Perform
adjustments
in theorder
given.
Usethedisc
(YEDS-I
8,PartNo.3-702-10l
-Ol
)
only when
so
indicated.
BeforeAdjustment
Put the set into servicemode and perform the
followingchecks,Repairif there are
any
problems.
o Sled
MotorCheck
1 Press
) key-+1 ç"t.
2. PresslN,
K{ keysand confirmthat tlre'FOP
moves
smoothlyfrom the innermost
to outer-
most circumference
and back smoothly and
with no catching
orabnormalnoises.
>> : FOP
movesto theoutercircumference
l( : FOPmovesto theinnercircumference
. Focus
SearchCheck
l. Press
) key. (Focus
searchoperationis per-
formed
continuously.)
2. Look at the FOP objective
lens
and confirm
that it movesup anddownsmoothly,with no
catchingor abnormalnoises.
3. Press'I key.
Confirmthat focussearchoperationstops.If it
doesnot,pressI keyagainlonger,
Howto Put
the
SetintoServicêMode
l. Short-circuit
following
portions
onthe
CDcontrol
board.
2. Turnthe
POWER
on.
.,
3.
o
VCO
Adjustment
Adjustm€nt Procedure:
l. Short-cfcuit@ portionon CD mainboard.
2. Adjust with RV703 so that the readingon
frequency
counter
becomes4.3218MHz.
3. Releasetheshort-circuit
@ portion.
Adjustment Location: ICD
Main
Boardl
frequency counter
-14-