SERI|ICE
MANIJAL AEP Model
Model
Name
Using Similar
Mechanism cF5-3000L
Tape
Transport
Mechanism
TYPe MF-D444-75D
I
SPECIFICATIONS
CD playor
seclion
System Compact
disc
digital
audio
system
Laser
diode properlies lvaterial:
GaAlAs
Wavelength:
780 nm
Emission
duration:
Conlinuous
Laser
outpul:
Max 0 4
mw *
* This output is the value
measured
at a distance
of about l.6mm lrom the obiective lens surtace
on the
optical
Pick'up
block
Frequencyresponse 20-20'000Hz1ldB
Radio s€ction
Frequency
range FM: 87.6-1og MHz
MW: 530- l ,605 kHz
LW: 150-285 kHz
SW:
6-18 MHz
Anlennas FM/SW: Telescopic
antenna
MWLW: Builf
in ferrite bar
antenna
Tage tecold€r sgclion and genetal
Recording
system 4'track 2€hannel stereo
i""t *inO-ini ti." Approx. l.smin with Sony cassette
C6O
Frequency
response 80- 10
000
H?
Speakers Full-range
speâkers:
tocm dia
' cone
type
Tweeler:2cm
dia., ceramlc
lYæ
Peak
music power outPut
Outputs
Power requirements
Power
consumPtron
8attery lile
Batteries Sony
SUM.1
(NS) Sony
Alkaline
AM1
FM recording Approx.
12 Approx.
l7
Disc recording Approx.3 Approx. 3.5 (hour)
22W(11W+1lW)
Line
input
jacks
(phono
jacks)-2
Sensitivity
0.3V
Input
impedance
47 kilohms or higher
Headphones
jack (stereo
minijack)
For 8-32ohms impedance
headphones
CD output jacks (phono
jack)-2
Load impedance
l0kilohms or higher
Rated output
1.4V
rms
at load impedance
47 kilohms
22O V AC, SO Hz
DC 12 V,8 size
D (R20)
batteries
AC40W
Dimensions
Weight
Supplied
accessory
67
4
\221 x 177 mm \w
lhldl
(æ%x8%xTinches)
incl. poecting Parts
and controls
6.2k9
(13lb
11oz)
incl. batteraes
AC power cord (1)
TM/MTI'/LVSIï
C
OMPACT
DISG
CASSETTE.GORDER
SONY.
SONY
SERI|ICE
MANIJAL AEP Model
c705 1-130483.00
c711 1-130-483{0
c'112 1-124-963-11
c713 1-r 30.48300
(lncorrectl
MYLER O.O1MF
MYLER O.O1MF
ELECT 33MF
MYLER O.Ol
IVF
(lncorrect I
none
(lncorrectl
none
50v
50v
16V
50v
lT"s"
461
c795
I P"r" 4-1
RS701
F"s-"
48
|
R70'l
lT"r"4tl
(lncorrectl
1-249433-11 (RF
BOARD) . . . CAR8oN 100K 5%
RV701 1-237 441-11
RV702 1-231442-1'l
(lncorrectl
RES, ADJ, METAL GLAZE
RÊS, ADJ, METAL G LAZE 20K
50K
22K
47K
{Correct}
1-230€95.11 RES, ADJ, MÊTAL GLAZE
1.230.608.11 RES, ADJ, MÊTAL GLAZE
Sony Corporation
Audio Group
CORRECTION-1
File
this correction-1 with
the service manual.
5%
50Â
20%
5%
À1-532439-21
1
|
4W 1
-249433-1
1
(Correctl
none
none
1-124469-'t1 E
LECT 220MF 20% 6.3V
none
(Correct)
1.102-110-00
CERAMTC
220PF
{Correctl
LIN K, IC
(Correctl
(RF
BOARD) . . .
CARBON 22K 5y. 1t4W
Englidt
aaao547-1
Printed
in Japan
@ 1988.
1
9.952-980-91
sEcTroN 1
OUTLINE
Tho CFD"444
is a casseilecorder
equip@ wlth a FM/AM
luner,
compact
dlsc player,
and lh€ separato
speakers.
CD player
3octlon
. Repeal
play
to rep€at
one
or all ths selecÙons.
. Shuttlo
play
to ptay
the selections
in random
order.
o
Program
plây
to play
the
selections
in
a dosired
order.
Caseette
deck sectlon
o
Synchronlzcd
CD æcodlng stad lyltem
General
. $band
graphlc
equallzer
to adiust the
tone
quality
to
your
preference.
. Powor
outpul
of 4W+4W (measur€d
at the FTC
regulation)
NOTES
ON HANDLING THE OPTICAL PICK.
UP BLOCK OR BASE UNIT
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 clothing
and
the human body.
During repair, pay attention to electrostatic break-
down and also use the procedure in the printed
matter which is included in the repair parts.
The flexible board is easily damaged and should be
handled with care.
SAFETY.RELAlED
COMPONENl
WARNING!
!
COMPONENTS
IOENTIFIED
BY SHADING
AND MARK
7\ orrr rxe scHEMATtc DIAGRAMS AND tN THE
PARTS LIST ARE CRITICAL
TO SAFE OPERATION.
REPLACE THESE COMPONENTS
WITH SONY PARTS
WHOSE
PART NUMBERS
APPEAR
AS SHOWN
IN THIS
MANUAL
OR IN SUPPLEMENTS
PUBLISHED
BY SONY.
CAUTION
a use ot controts
or adjustments
or pertormance
ol
proceOures
olher than those
specitjed
he.ein
mav
reSull In hazardoL,'s
radialron
erposure
-2-
l"ro\
4t/
Chuck Plate Jig for Repair
When repairing the CD section, use the chuck plate
jig in order to play a disc without using the CD cover.
Chuck plate jig part No.: X4918-255-l
Chuck plate jig component parts:
Notes on Spindle Motor Repairing
The spindle
motor (M702)
used in this set is pressed
into turntable assy, but the repair
parts
âre
suppûed
separately.
rfihen
replacing, order
both turntable assy and spindle
motor.
The installation dimension
is as shown
below.
19.4 x0.
I mm
TABLE OF CONTENTS
Title
Section
Specifications
Features
Notes on Handling The Optical Pick-up
Block or Base Unit
Chuck Plate Jig for Repair
Notes on Spindle Motor Repairing
Location and Function of Controls
ServiceMode(serviceprogram) . . . . .
Notes
on Laser Diode Emission
Check .......
1. BLOCK DIAGRAMS
Page
I
+
q
I
2
2
J
4
6
7
8
9
l-l. Radio/RecorderSection
1-2. CD Section
2. DTSASSEMBLY ....11
3. ADJUSTMENTS
3-l . Mechanical
Adjustments
3-2. Electrical Adjustments
AM Section
FM Section
Recorder Section .
CD Section
Reference
4. DIAGRAMS
4-1. Radio/Recorder Section
Mounting Diagram
4-2. Radio/Recorder Section
Schematic
Diagram
4-3. CD Section
Mounting Diagram
4-4. CD Section Schematic
Diagram
4-5. IC Block Diagrams
EXPLODED
VIEWS
AND
PARTSLIST .....36
ELECTRICAL
PARTS
LIST ......... 42
l3
l4
14
l5
t7
l8
2l
z5
25
28
JI
5.
6.
Troubleshootion
Guide
.. ........ 50
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I cFp-444L
$'4q'SS\
\ tc704
^, ,1 \
;\,it-trtm
t-
rnalsurtol'tf
:RD______!1.,,"-.,. cNJ-(.
i "'
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Etu-
, -l *aoeJ-;;1
lf4.";l l-tr] :-,
l1 lJi[] l? L4.lr
'""'1-t;1";:ffi I tÈil
>J lil l:il l<. liEir
l::l l:;l I l;ffi:o
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lttJ<o
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Ç
E
ICD
LEAF
SW
BOARD)
-3-
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cFD-444L
23
22
21
Fati
Notr:
. Atl capacitors
are in tlF unless otherwise noted. pFt rjpF
50WV or less are not indicated except for electrolytica
and tantalums.
All resistors are in O and %W or less
unle$ otherwise
soecified.
- i B+ bus.
f: : adjustment
tor repair.
Vollages
are dc wilh respect
to ground
unless olherwise
L/u
U L .*', n oted.
o Readings are taken under service mode with a VOM
(50
kç}/v ).
no mark
: STOP
( ):
PLAY
. Voltage variat;ons
may be noted due to nofmal
produc
lton tolerances.
Waveforms are taken to ground
in service
oscilloscope.
Voltage variôtions
may be noted due to
tio
n tolerance_
S : CD signal
path
mooe Dy usrn!]
norma i proouc
Yzav---o
1;.1:'':-*E'
c302
cxP502aH 0270
?BnArsa
n PAUST
sÊrR,cH
sroP
iErArn/Ex1€R
aiiF;iiTtS
*,9.L,,"e
Switch
R€f. No, Swilch P6ition
s602
s701
s801
s802
s803
s804
s805
s806
s807
s808
s809
s810
MD pause
LIMIT IN
l<<
>>l
REMAIN/ENTÉR
REPEAT 1/ALL
SHUFFLE/RMS
I>/aa
CD HOLDER
OFF
OFF
OFF
UFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
",/)'^""".,
-6-
[Jspeater
@eXOleS fteadphones)
jack
(stereo
minijack)
EPOWER switcfl
EJOPR/BATT
(operation/battery)
indicator
@fm Sf (FM
sterco)
indicator
@ Diat
scate and pointsl
EIFTNE
TUNtNc
conrrol
Used for precise
tuning
of SW stations.
@ Tuning
control
pAmo selector
@votume
conrrot
@BALltCe contot
Use
to adjust stereo imaging,
especially when speakers
are
not symmetrically
placed.
@cneexrc EouALlzER
controts
(for
tistening
onty)
@FUNCT|ON
selector
CD: To listen
to/record CD sound.
LINE lN: To listen
to/record sound trom the equioment
con-
nected
to the LINE lN jacks.
RADIO: To listen
to/record
radio
programs.
TAPE: To listen
to taoes.
CD,crorlbdcdr
rreton
@ Cassette holdsr
ECD display window
ECO operation buttons
I (stop)
>tl (play/pause)
<</>> (search)
l<</>l (AMS)
@Tape operation buttons
I (stop/eiect)
a (record)
> (playback)
<< (rewind)
>> (fast
forward)
ll (pause)
EICO op"rati* mode
buttons
REMAINTENTER:
To disptay
the remaining
time od a disc.
or
to program
selections.
REPEAT
I,ALL: To repeat one or all ot the selections.
SHUFFLE/RMS:
To play the selêctions in a random order, or
to program
specific
selections.
@Co trotoer
ElaeCr hdton
(for
CD)
@AC lN (AC
power
input)
socket
@ fefscopic ar ertna
@t-tl\|e
lN 0ine
input)
iacks
(phono
jacks)
@CO OUf 1CO
outpur)
jacks
(phono
jacks)
@SPEAKER
teminats
E lSsrFM MODE
(tnterf€r€ncê
Suppress
SwitcfirFM
mode switcù)
-5-
SERVCIE MODE (service
Program)
This set has built-in service program in the micro-
computer as usual sets.
The operation method of service
program is explained
below.
Be sure to set POWER switch ON,
lf not. key inpu$ can not be operctecl.
REMAIN/ENTER
[ ] : Main operation in service mode
for details. rcfer to step 2.
.(sToP)
f Rewrn to the
stand
W mode"l
Land stop the display. l
>II(PLAY/PAUSE)
fFocus servo goes
on andl
Lturn to pull-in mode. J
),> (FF
)
f Opticat
pick-up goes
to1
L outside circumference. J
f Tracking
servo and
sledf
Lservo
go on, )
Be sure to close CD holder.
lf not, key inputs can not be operated.
Fig. 1 Key Positions
<(FR)
fOptical
pick.up goes
tol
Linside circumference. J
Step 1 (Service
Mode Setting
Method)
l. Turn the POWER switch ON and FUNCTION
switch to CD with the power
cord not plugged
in
(no power
applied
to set)
and
press
the
) lf key.
(This is to discharge
C804 connected to IC801
pin Q) (RSr).)
2. Solder
jumper
TEST
point.
(IC801
pin @ trrsrl is
grounded.)
Plug
in power
cord.
This puts the set into service
mode.
- CD control board -
Solder jumper for service
mode.
I Aftei chécking or adiusting in service
mode,\
\be sure to remove this solder iumper' /
Fig. 2 TEST Point Position
'H H00H00
s
\ co I
llt-J - 'L_r-
-6-
Step 2 {Service
Mode operation}
l. When service mode is set, the display will change
6 times (includes âll the segments lighting and all
turning out), and those 6 changes
will be repeated
over and over.
When I key is pressed,
the display stops.
When I key is released,
the display continues to
change. This allows check of each
segment.
The following operation can not be performed if
the CD holder is not shut.
2. When I key is pressed
on each mode, return to
the step l.
3. When
}) or li{ key is pressed,
the optical pick-
up block moves to the inside or outside circum-
ference. Tracking servo and sled servo
go off when
this is done, so press REMAIN/ENTER key to
turn on the tracking servo
if necessary.
4. When
)ll key is pressed, CLV-S (pull-in mode)
starts while performing focus search. When there
is no disc installed, focus search
is repeated
several
times while disc motor is rotating.
5. When REMAINi ENTER key is pressed,
tracking
servo, sled servo and CLV-A (servo during PLAY)
go oN.
6. When 4 and 5 are performed, the disc begins to
play.
Step 3 (Service
Mode release)
l. First be sure to unplug the power cord then
remove the TEST point solder
jumper.
(During service mode, C804 is discharged
by un-
plugging the power cord. Therefore, microcom-
puter ICS0l is reset
by next plugging
in the power
cord.)
2. The set will now operated normally.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to
be focused on the disc reflective surface by the
objective lens
in the optical pick-up block. Therefore,
when checking the laser diode emission. observe.
from more than 30 cm away from the objective lens.
Laser Diode Check Procedu
re
The laser diode on this set will not emit unless the
CD holder is closed and S8l0 (leaf SW type) is turned
on. The laser diode will always emit even if focus
search is not performed in service mode.
Procedure:
Check the laser diode emission
with the eve.
l. Open upper
panel.
2. S8l0 on as
Fig.
3.
(In service mode, this operation is not necessa-
rv.)
3. Press
the
)ll key.
(ln service mode,
this operation
is
not hecessa-
ry.)
4. Observe
the objective lens and
confirm
that the
laser diode
is
emitting
light. If it does
not, APC
circuit
or optical
pick-up
block is defective.
Set S8l0 going
on
with a thin screwdriver.
Fig. 3 Turning 5810 on
o
-7
1.1. RADIO/RECORDER SECTION
!l
l6 {Li{l
Ie
sEcTloN
1
BLOCK
DIAGRAMS
s303'2
lïu voîËl
1
M0N0 _e
ID502
14
MW oSC
SI
lBÂNoil
t
I
I
SW
RV2
IFmr-t
ITUNINGI
I7
rlz SW
ANT
9ie
s30r 5
l
I
2
FV3O6 RV3O7
I
I
I
HRP6OI
REClPB
HEÀD
lEÀL-ANcÈlltoL
uvE
s302-3
( s':0,
fl sr:oz
\
o
o
J302
lFIo
NÈal
s30r
RECORD,/PLAYBACK
PLAYBACK
t
RECORD
s302
FUN-r
ro-Nl
CD
I
L
INE
I
RAD
O
I
-e <Ja
s:o:.tffi 1
',, I SI
EanDl
T]\r
ta
(Po0e
10)
T0 D502
- R_CH
-
SÂME AS L_CH
FM SECT ON
AM SECT ON
RAD O, TAPE SECT ON
s60l
TÀPE
POivER
POWER
AMP SECT ION D501
IôPR,€Àin
r,3,5,7,9
l90l
PowER lll cHsor
ilE--n Àr N
ill_+li{
DRY
BAÏT.
s zE -c-
(IEC
DES GNAT ION
8PCS,
I2V RIlN
I
-8-
cFD-444L
1-2. CD SECTION
OPTICAL
PICK-UP
BLOCK
KSS-1508
I6KB
T F
tc6a2
l-8, 1
!ETECTOR
f.
LASER
O
lODE
-I
',
ri
FOCUS
c0 r
M7A2
SP NDLE
MOT OR
DBO
I
'DBO8
EFM
ASY
D
IG ITAL S
IGNAL P
vc00
vc0
|
PDO
CN
N
>>>[:
OowÈ
x,r,.
:=:
FOCUS/TRÀCK
NG
Cl] L DR
IVE
SLED,/SP
NDLE
MOTOR
DR VE
s7 0l
LIM
T
CLOCK
LATCH
DAT
A
RESET
SENSE
M70l
StED
MOTOR
S GNAL
PROCESSOR,
LASER
ON C RCU
IT'
M
IDPO NT VOLTÀGE
GENERATER
1C701
PD]
9- , l3- l7
29
32,3L-37
AUIOMAT
C
POWÉR
CONTROL
FOCUS/lRACK
I N G/SL EDl
CLVlPLL SERVO
1C742
SLO i./DP
MON
FSW
SPDL
SW
TCH I NG
I
c107
-9-
CE
OE
WE
t2, 2
DRE SS
8
:ss0R.
cLv
03
0
SERV
O
DA 1A
e21o
f
;ËF
FOK
SUBO
sc 0R
C
RCF
WFCK
GFS SYSTEM CONTROL
Ic80r
CLOCK
LATCH
DATA
SE
NSE
RESE
T
FF
SEARC H
REMA ] N,/ENTÊR
SHUFFLETÈMs
o-a5
I l. SMHr
-o 'q
(TEST)
''
0B0l
StJITCHING
TEST
START
FE,/PIUSE
SrnF
CLOCK
LATCH
DAT A
SENSE
RESET MD PAUSE
5V
D/A
CONVERTER
1c705
LOUT
DAT A
BCLK
SCLK 0705
_cH sv/ tlcH NG
x701
16.
9344
N2
MUT
I Nô SW
I
TCH
8709,71A
s30r-7
RECORD,/PLAYBÂCK
PLAYBACK
I
RE
C ORD
s809
E
s808
E
s8r0
CD HOLDER
s902
MD PAUSE
-10-
/ sYslEM
\
I C0NTRoL
I
\
sEcT
| 0N/
sEcTroN
2
DISASSEMBLY
Noto: Follow the disassembly
procedure
in the numerical
order given.
FRONT
CABINET
REMOVAL
x 14
CASSETTE HOLDER
O-O:cassetteholder
O - (D r cD hotder
AND CD HOLDER
REMOVAL
CD BLOCK REMOVAL
VTPS
\
q
@ Remove the boss by
pushing in the arrow
direction.
'/ Gl cD cove,
Q Re-one the bols by
lD arpz.d , 6 e::!1i!.s in the arrow
dircction.
@ small damper
?-urrr"",,
direction-
CD holder
up spring.
@ Remove
the boss
by
pushing in the aûow
@ nemoré the boss
by
pushing in the arrow
direction.
@
evres x ta
CD block
\.-
\ -)r<.
:lt
-1 1-
MECHANISM
DECK REMOVAL
OGEo boatd
@
eres
x to
POTNTER
RACK SETTING
@ Turn tne tuning
drum
f u I I v cou
n te
rc
I
oc
K wt
se'
MAIN BOARD REMOVAL
O erps
, to
lS tnstatt
the
Pointer
rcck.
pointer rack
Q) lnstatt the TU chassis.
@ set the
pointer rack @ as
shown in figure.
REC sw lever
.h
BVTP3
x 1O
O telescopic antenna
_o
Y 83x 1O
6 Tig;ên the
screw
IBVTP3
x 1d
pointer rack
cFD-444L
SECTION
3
ADJUSTMENTS
3-1. MECHANICAL
ADJUSTMENTS
PRECAUTION
t. Clean the following Parts
alcohol-moistened
swab:
record
/plaYback
head
erase
head
caPstan
2. Dema.gnetize
the record/playback head with a
head demagnetizer. (Do not bring the head de-
magnetizer
close to the erase
head )
3. Do not use a magnetized screwdriver for the
adjustments.
4. After the adjustments,
apply suitable
locking com-
pound to the Parts
adjusted.
Torque Measurement
with a denatured-
pinch roller
rubber belts
idlers
Tape Path Adiustment
When the mode is playback (FWD, REV), run a
mi.rror cassette, then turn adjustment screw to
eliminate tape curl and tape twist at tape guide on
erase head
and record/playback
head.
Adjust the height by using head shim if needed.
Standard
t = 0.1
Part Cods t
3-5
78-138-01 0.1
3-578-138-1
I0.2
3-5 78-1
38-21 0.3
adjustment shim
Torque Torqug metal Meter reading
FWD cQ-102C 25 to 55
g'cm
(0.35
to 0.?6
oz'inch)
FWD
Back
Tension CQ{ O2C 2.5
to 5.5
g'cm
(0.04
to 0.07
oz'inch)
REV cQ-102R8 25 to 55
g'cm
(0.35
to 0.76
oz'inch)
REV
Back
Tension cQl02RB 2.2 to 5.5
g.cm
(0.04
to 0.07
oz'inch)
FF cQ-2018 100
to 180
g'cm
(1.39
to 2.5 oz
inch)
REW cQ-201B 95
to 145
g
cm
(1.33
to 2.01
oz'inch)
-13-
cFD-444L
3-2. ELECTRICAL
ADJUSTMENTS
MW/LW
SECTION
FUNCTION: RADIO
BAND: MW
oT LW
AM rf signal
generatof
Put the lead-wire
anùenna close to
tne set.
30o ampl itude modulation
by 4O0 Hz signal
Output level: as low as
possible
. Repeat the procedures in each adjustment
several times, and the frequency coverage and
tracking adjustments should be finally done by
the trimmer capacitors
PHONES
MW TRACKING ATUUSTMENT MW FREOUENCY
COVERAGE
ADJUSTMENT MW IF ALIGNMÊNT
Adjust for a maximum
reading
on
VTVM. Adjust for a maximum
reading
ON VTVM.
Adjust for a maximum
reading
on VTVM.
620 kHz I 1,400 kHz 455 kHz
L3 | CT 1-3 1.650
kHz | 525 kHz T2
crl-4 | T4
InMAIN BOARDI
16/,@ rYr
l';El
-f|-
IS LJ ,/
-t(ât tErt I I E qpl
L3 cT2 cT4 | T5
160 kHz | 260
kHz 295 kHz | 145
kHz
Adjust for a maximum
reading
on VTVM. Adjust for a maximum reading
on VTVM.
LW TRACKING
ADJUSTMENT LW FREOUENCY
COVERAGE
ADJUSTMENT
-14-
FM/SW
SECTION
. FM Section
FUNCTION: RADIO
BAND: FM
FM rf signal
generator
40O Hz. 30% FM modulation
frequency deviation !22.5 kHz
Output level: as low as possible
FM an
. SW Section
FUNCTION: RADIO
BAND: SW
AM rf signal
gEnerator
Ouput level: as low as possible
s2a tE-l
Hheadphones
. Repeat the procedures in esch adjustmenf
several times, and the frequency coverage and
tracking adjustments
should be finally done by
the trimmer caDacitors
86.5 MH:
Adjust for a maximum readir
on VTVM.
FM FREOUENCY
COVERA
ADJUSTMENT
FM antenna input
I Procedure
I FM tf siCl
I genefator
l@
l-
I c.ri", r,",
I Modulatiol
I Output levl
| ,";::","
| 2. Adjust
I symmet
I
L_
FM antenna input
S1/I'2
TRACKING ADJUSTMENT
FM TRACKING ADJUSTMENT
18.4 MHz
-15-
ator Adiustment
FM antenna input
98 MHz
PHONES
1 kHz,75 kHz deviation
(100%)
I mV (60 dB)
monoufal
I MHz signal.
so that the oscilloscope waveform is
al.
VCO Adiustment
A) Regular Method
Procedure:
FM rf signal
generator
Carrier frequency:
Modulation:
Output level:
98 MHz
1 kHz, 30%
1
mV (60 dB)
47
pF
FM antenna input
frequency counter
l . Tune
the set to 98 MHz
2. Adjust RVI for l9 kHz 10.2
kHz on the counter'
B) Simple Method
Procedure:
l. Tune the set to the FM stereo
broadcasting
signal.
2. Turn RVI clockwise or counterclockwise and
memorize the lighting-up range of the FM
STEREO
stereo
lamP.
3. Secure RVI at the center of the lighting-up range
of both turns
as
shown
below.
center of lighting-up ranges
lighting-uP rangc
O.01
pF
10
p.F/16
V
RVl
E
-1 6-
Adjust for a maximum reading
on VTVM.
FM IF ALIGNMENT
RECORDER
SECTION
l. The adjustments
should be
performed
in the order
given in the Seryice Manual. (As a general rule,
playback circuit adjustment
should be completed
before performing recording circuit adjustment.)
2. The adjustments should be performed for both
L-CH and R-CH unless
otherwide indicâted.
. Switch
location
FUNCTION
ISS...
GRAPHIC EQUALIZER
BALANC
E
VOLUME
TAPE
2
center click
center
click
mechanical center
o Standard
Record:
Deliver the standard input signal
level to the input
jack and set the REC LEVEL control to obtain
the standârd output signal level.
Standard Input Level
LINE IN
source
impedance 10
kç)
input level 0.31
v (-8 dB)
Record/Playback
Head Azimuth
Adiustment
Procedure:
l. Mode:
playback
test tape
P.4.A063
(6.3 kHz, -10 dB) VTVM
2.Turn the adjustlnent screw and check output
peaks. If the peaks do not match for L-CH and
R-CH, turn the adjustment screw so that outputs
L.CH
peak output
level I
I
within
2dB
Screw
position
R.CH
peak
L.CH R.CH
peak peak position
3. Phase Check
Mode: playback
test tape
P-4-A063
(6.3 kHz, -10 dBl
L.CH
osc il loscope
Adjustment Location:
adjustment screw
Scrgan patt€rn
@@ose
in phase 45" 90", 135" 180'
,
good wrong
Note: Finish the screw adjustment with a lurn in the
clockwise di.rection.
After the adjustmenl, lock the adjustment screw.
PHONES
tl+
PHONES
Standard Output Level
SP OUT HEADPHONES
load impedance 3.2
a32a
output level 0.775
V (0
dB) 0.2s
v( 10
dB)
Test Tâpe
Type Signal Usêd fot
P-4-A063 6-3
kHz,
-10 dB Azimuth Adjustment
ws48A 3
kHz,
0 dB Tape Speed Adjustment
-17 -
Tape Speed Adiustment
Setting:
Mode: playback
Procedure:
test tape
ws-48A
B kHz,
O dB)
speed checker
LFM.3O
or
digital freguency
counter
Specification:
Speed checker Digital frequonciy counter
-1.5 to +27o 2,955 to 3,060
Hz
Fre-quency
difference between the beginning and
the end of the tape should be within l7o
(30 Hz).
Adjustment Locâtion
PHONES
l-p sEcrroN
1
Notes on Adjustment
1. Perform adjustments except for CD OUT LEVEL
ADJUSTMENT in service mode. Be sure
to release
service
mode after completing adjustment.
(Refer to "Service Mode (service program)" on
page
6, 7
.)
2. Perform adjustments in the order given.
3. Use YEDS-1
8 disc
(part No.: 3-702- l0 l
-01
) unless
otherwise indicated.
4. When repairing CD section, use the chuck plate
jig in order to play â disc without using the CD
holder. (Refer
to page
3.)
PREPARATION
Put the set into service mode (see page 6, 7) and
perform the following checks. Repair if there are any
abnormalities.
. Sled
Motor Check
Press the >}l , lC( keys and make sure that the
optical pick-up block moves smoothly, without
catching, from the inmost -> outmost -+ inmost
circumference.
>) : optical pick-up block moves outward
l*{ : optical pick-up block moves
inward
. Focus Search Check
l. Press
thelll key. (Focus search is performed
continously.
)
2. Observe the optical pick-up block objective lens
and check that it moves smotthly up and down
with no catching or noises.
3. Press
the r key.
Check that focus search
operation stops. If it does
not, press
the I key again, longer.
-18-
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