Sanyo DC D30 User manual

Service Manual
SANYO
FILENO. €-2Y¢92
Mini Component System DC D30 «xe
Contents
SPECIFICATION
SYSTEM CONNECTION
OPERATING THE RESET SWITCH
PARTS LIST(PACK & ACCESSORIES)
PARTS LIST(REMOCON)
CD/ TUNER UNIT
TUNER ADJUSTMENT
LASER BEAM SAFETY PRECAUTION
CD MECHANISM REMOVAL
CD SERVICE MODE
CD ADJUSTMENT
PARTS LIST
EXPLODED VIEW(CABINET & CHASSIS)
EXPLODED VIEW(CD MECHANISM)
PARTS LIST(CD MECHANISM)
IC BLOCK DIAGRAM
LCD BLOCK DIAGRAM
CD VOLTAGE TABLE
SCHEMATIC DIAGRAM(FRONT)
CONNECTION DIAGRAM
SCHEMATIC DIAGRAM(CD)
WIRING DIAGRAM(CD)
This Service manual is consist of “RB-D30”, “DC-D30CT
“,"DC-D30DA”.
PRODUCT CODE No.
129 374 01
SCHEMATIC DIAGRAM(TUNER) ............. 38
WIRING DIAGRAM(TUNER & FRONT) ........ 40
BLOCK DIAGRAM(CD) ..............-2-000- 42
TAPE DECK/ AMPLIFIER UNIT
DECK ADJUSTMENT ...........0....00000s 43
EXPLODED VIEW(CABINET & CHASSIS) 45
PARTS ALIS hence Siete ae sake cerns cenanied Bane 46
PARTS LIST(TAPE MECHANISM) ............ 52
EXPLODED VIEW(TAPE MECHANISM) ........ 53
IC BLOCK DIAGRAM ...............-0-005- 54
LCD BLOCK DIAGRAM .................05. 59
SCHEMATIC DIAGRAM(TAPE DECK AMP) 60
WIRING DIAGRAM(TAPE DECK AMP) ........ 62
SCHEMATIC DIAGRAM(PRE-AMP) ........... 64
WIRING DIAGRAM(PRE-AMP & FRONT) ...... 66
SCHEMATIC DIAGRAM(SYSCON & MAIN AMP) 68
WIRING DIAGRAM(MAIN AMP) ...........-.. 70
CONNECTION DIAGRAM ...............-.-. 72
BLOCK DIAGRAM(TAPE DECK & FRONT) 74
BLOCK DIAGRAM(PRE & MAIN AMP) ........ 75
SCHEMATIC DIAGRAM(FRONT) ............. 76
SCHEMATIC DIAGRAM(TAPE MECHANISM) 77.
“Dolby” and the double-D symbol [i are trademark of Dolby
Laboratories Licensing Corporation.Dolby Noise Reduction
system is manufactured under license from Dolby Laboratories
Licensing Corporation.
REFERENCE No. SM580024

SPECIFICATION
CASSETTE DECK/ AMPLIFIER UNIT TUNER/TIMER/CD PLAYER UNIT
Cassette decks Tuner
Track system ............ 4-track, 2-channel stereo Reception frequency ..... FM : 87.5 - 108 MHz
Frequency response ...... Chrome tapes: 40 - 13,500 Hz MW : 522 - 1,611 kHz
Normal tapes : 40 - 12,500 Hz LW : 144 -290 kHz
Signal to noise ratio ..... 60 dB(with DOLBY NR: ON) CD player
Wow and flutter ........ 0.09% (WRMS) Channels ................ 2-channel stereo
Fast forward / Sampling frequency ...... 44.1 kHz
rewind time ........ Approx. 120 sec. (C-60) Pick-Up c2cccaeeebeeo des Optical 3-beam semiconductor laser
Amplifier Frequency response ...... 20 - 20,000 Hz
Output power ........... 20W x2 (at 8ohms, 0.9% distortion) Wow and flutter ........ Below measurable limits
Graphic equalizer ........ 7 band electronic General
Spectrum analyzer ....... 7 band Dimensions(approx.) ..... 270 (W) x 178(H) x 278(D) mm
INPUTS! \2.ceosscccewse. Beg eses PHONO : 5mV/47k ohms Weight(approx.) ......... 2.9 kg
VIDEO : 280 mV/47k ohms
Outputs ................. SUPER WOOFER OUT : 600 mV REMOTE CONTROLLER (RB-D30)
SPEAKERS : 8 ohms Power requirements ...... DC : 3V
PHONES : 8o0hms “R03 /AAA/UM-4" Battery x 2
General Dimensions(approx.) ...... 58(W) x 18(D) x 186(H)mm
Power requirements ..... AC: 230 V (115 V), 50 Hz
Power consumption ...... 75W
Dimensions(approx.) ..... 270 (W) x 178(H) x 317(D)mm Specification subject to change without notice.
Weight(approx.) ......... 5.2 kg
Note: The below mentioned specifications are mainly based on the IHF measurements standard. They can therefore not directly be
compared with specifications based on the DIN standard or other standards.
SYSTEM CONNECTION
R ch speaker L ch speaker
Kanal des rechten Lautsprechers Kanal des linken Lautsprechers
Active super woofer Aktiv lgbashdgtalare Enceinte du canal droit Enceinte du canal gauche
Aktiv-Superwoofer Active super woofer Luidspreker rechter kanaal Luidspreker linker kanaal
Haut-parleur de graves profonds Altavoz de bajos super activo Hogtalare for hoger kanal Hogtalare for vanster kanal
Active super-woofer Attifalante de baixa reqdéncia super ativo | Diffusore destro Oiffusore sinistro
a a e Canal derecho det altoparlante Canal izquierdo del altoparlante
Canal direito do altifalante Canal esquerdo do altifalante To connect, push the middle of the plug and insert it until
it clicks.
Zum AnschlieBen die Steckermitte driicken, dann den
Stecker bis zum Einrasten einschieben.
Pour brancher {a fiche, la pousser au centre et I'introduire
jusqu'a ce qu'elle produise un déclic.
Voor aansluiten het midden van de stekker indrukken en
vervolgens insteken totdat deze vastklikt.
Anslut genom att trycka mitt pa kontakten och fér in den
tills den lAses fast med ett Klick.
Per collegare, spingere la spina sino ache non la si sente
scattare al suo posto.
Para conectar, empuje !a parte del medio-del enchufe e
insértelo hasta que se escuche click.
Para conectar, empurrar o meio da tomada e inseri-la até
ocorrer um estélo.
Input Entrée
Eingangssignal = Ingangsvermogen
Ingang Ingresso Entrada
Video equipment _Video-apparatuur
Video-Gerate Videoutrustning
Appareil vidéo Apparecchiatura video
Audio outputs
Audio-Ausgangsleistung
Sorties audio
Audio-uitgangsvermogen
Equipo de video
Equipamento de video
Ljudutganger —Salidas de audio
Uscite audio — Saidas de audio
Turntable Platenspeler Tocadiscos
Plattenspieler Skivspelare Toca-discos
Platine tourne-disque — Giradischi
Outputs
Ausgange
Sorties
Uitgangen
Salidas
Saidas
Utgangar
Uscite
Earth cord Jordkabel
Erdleitung Cavo di messa a terra
Cable deterre Cable a tierra
Aardsnoer Fio terra
To disconnect
Abziehen
Pour débrancher
Losmaken
White stripe
WeiBer streifen
Bande blanche Att koppia ur
Witte streep Per scollegarla:
Vitrandig Para desconectar ..,
Striscia bianca To an AC outlet
Banda blanca CD player/Tuner/Timer Cassette deck/Amplifier tage lareated
CD-Spieler/Tuner/Timer Cassettendeck/Verstarker Naar een stopcontact
Lecteur de CD/tuner/programmateur Platine 4 cassette/amplificateur Till ett vagguttag
CD-speler/Tuner/Schakelklok Cassettedeck/Versterker A prese di corrente alternata
CD-spelare/tuner/timer Kassettdéck/férstarkare Auna toma de CA.
Lettore CD/sintonizzatore/timer Registratore a cassette/amplificatore Para uma tomada de C.A.
Reproductor CD/radio/temporizador Magnetéfono/Amplificador
Tocador CD/Raédio/Temporizador Deck da cassete/Amplifieador

OPERATING THE RESET SWITCH
This CD/TUNER and TAPE DECK /PRE-AMPLIFIER unit is provided with a reset switch on the rear panel. The reset switch serves to ini-
tialize the microprocessor in the each units which controls the CD, TUNER, TAPE DECK and etc block. If the unit is to be serviced or
key input is not acknowledged even when the CD/TUNER, TAPE DECK and etc. operation buttons are pressed, press the RESET
switch and initialize the microprocessor following the step below.
1). Disconnect the AC power cord from the power outlet.
2). Keep the RESET switch depressed for 60 seconds.
(The backed up electrolytic capacitor is discharged by keeping the RESET switch depress.)
3). Reconnect the AC power cord to the power outlet.
4). Press the CD/TUNER, TAPE DECK and etc. operations, and check their operation.
PARTS LIST
PRODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing. Components identified with the !EC symbol A\ in the parts list
and the schematic diagram designate components in which safety can be of special significance. When replacing a component identi-
fied A\, use only the replacement parts designated, or parts with the same ratings of resistance, wattage or voltage that are desig-
nated in the parts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts
are acceptably insulated from the supply circuit before returning the product to the customer.
CAUTION: Regular type resistors and capacitors are not list. To know those values, refer to the schematic diagram.
N.S.P : Not available as service parts.
PACKING ACCESSORIES
[Ref No.[ penne. | Deseription | [ RefNo] retwo | ___Detciption
INNER CARTON INSTRUCTION MANUAL
PAD, TOP ANTENNA, FM
PAD, BOTTOM ANTENNA, FM
SHEET,CT UNIT LOOP ANTENNA, AM
SHEET,CD TRAY SCR WOOD RND 3.1X13,AM ANT
SHEET,DA UNIT ASSY ,CONNECTOR-P,19P,
CD/TUNER - DECK/AMP UNIT
INNER POLYE COVER,CT UNIT
INNER POLYE COVER,DA UNIT
POLY COVER, REMOCON
INNER POLYE COVER, INST &
ACCESSORY
INNER POLYE COVER,SCREW
LABEL,SAFETY,LASER
wawnannennsnnnenenenns as REMOTE CONTROLLER UNIT -*222222022r0renennnnnns
PARTS LIST
REMOCON (RB-D30)
614 243 8152 | ASSY,REMOCON
614 235 9433 | LID, BATTERY

wnnenneneenennsessenseens
TUNER/CD
PLAYER
UNIT
--2220220022rennenneemenem
ADJUSTMENT
(TUNER)
@ Use a plastic screwdriver for adjustment.
@ Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
SG RF Level : 75 ohm Open voltage dBuV
1.
FM
BAND
Antenna
:
75
ohm
Direct,
Modulation
:
1kHz,
Dev.
:
+75kHz
(mono)
-
+
40kHz
(main)
-
+6.75kHz(pilot)
TUNING INPUT CONDITION OUTPUT CONDITION
STEP
ITEMS
PARTS
STANDARDS
peered
ne
Sane
an
eae
fom
eee
1 ER 87.5MHz ‘aital | TP202(H) Confirm 1.4~1.6V
cov
108.0MHz
Digital
Voltmeter
|
tp294(E)
Confirm
<8.5V
(about
7.8V)
FM SG TP211(H) wa TP203(H)
FM SG TP211(H) Frequency TP206(H) ##
seas (6608) ___|rP212¢€) E207) nl SRE
* ° Tp204 is no earth point. sae Adjust in the modulation off Tuner Mode : AUTO STEREO
2. MW BAND
STEP | ITEMS TUNING
FREQUENCY
522kHz
we
1404kHz
3. LW BAND
step
|
ITEMS
TUNING
INPUT
CONDITION
OUTPUT
CONDITION
PARTS
STANDARDS
on
ee
[input
| Measure
|
outPut
144kHz ig TP202(H) | 12154 | Confirm 1.3 ~ 1.8V
ea
COVER
|
290kHz
Se
a
Digits
VolsMmeter
Il
rezaq{e)
Confirm
<8.5V
(about
6.5V)
4. PARTS LOCATION
Antenna : IRE Loop, Modulation : 1kHz 30% SG RF Level : 75 ohm Open voltage dByV
INPUT CONDITION OUTPUT CONDITION PARTS STANDARDS
INPUT | MEASURE | OUTPUT Bad
=aRseGal TP202(H) | 12153 | Confirm 1.0 ~ 1.4V
Digital Voltmeter | tpagi(e) | ----- Confirm <8.5V (about 7.2V)
AM SG LOOP VTVM TP233(L) Output : Maximum
: TP234(R Confirm to near
gid Oscilloscope sens the effective sensitivity.
162kHz AM SG LOOP VTVM TP233(L) | (245, | Output : Maximum
TRACKING (about 80dB) i TP234(R) Confirm to near
279kHz ais ANT Oscilloscope the effective sensitivity.
FM
EXT.
TP212
TP202(COVER)
TP201(E)
TP207(E)
ANT.(75)
C2133
5449
C2132
5422
1 TP212
P
[RAS
=e
©
ae
SVR23
NT GND +B OSC
oa oa a o aoa
none vt Oa >|
TU201
TP224 TP223
cae R2227
CT251
CT252
a
qo.
@Q
6)
A
A
/TP203
[|
[
|
12154
L213
x
: 2202 tte
2151
L
2152
‘
1!
TP234(R-CH)
TP204
/
po
TP235
e
frolic)
J423(E) 4420
4
Z_
AM LOOP ANT.

LASER BEAM SAFETY PRECAUTIONS (CD)
Do not look straight at the laser beam from the pickup and do
not point the beam at your fingers or any other part of your
body.
Note: The laser beam must never be allowed to enter the eyes
since this may damage the eyes.
Power must never be supplied to a pickup with a damaged laser
output part (objective lens, etc.).
INVISIBLE
OUTPUT POWER
0.6 mW
LASER RADIATION EXPOSURE TO BEAM -
Structural Safety Interlock
This model has a disc chuck lever and top lid. This disc chuck
lever and top lid prevent to expose the laser beam for users.
IS DANGEROUS CLASS 1
MAX WAVELENGTH 790 nm
LASER PRODUCT
CLASS 1 LABER
CAUTION — INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
AOVARSEL — USYWLIG LASER STRALING VEO AGNING, NAR
SIKKERHEOSAFBRYDERE ER UDE AF FUNKTION, UNDGA UDS ATTELSE
FOR STRALING.
VARWING — OSYNLIG LASER STRALNING WAR DENNA DEL AR OPPNAD
OCH SPARR AR URKOPPLAD. STRALEN AR FARLIG.
VORSICHT — UNSICHTBARE LASERSTRAHLUNG TRITT AUS, WENN
DECKEL GEGFFNET UND WENN SICHERHEITSVERRIEGELUNG
UBERBRUCKT IST. NICHT, OEM STRAHL AUSSETZEN.
| VARO — AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
NAKYMATTOMALLE LASERSATEILYLLE. ALA KATSO SATEESEEN.
1. Precautions for handling the pickup and semiconductors
(particularly the ICs)
a. The pickup and semiconductors (particularly the ICs) may be
damaged if they come into contact with a source of high
voltage static electricity. Do not bring them, therefore, into
contact with or into the vicinity of anything which has been
charged with high voltage static.
b. The pickup consists of a large number of optical and precision
parts. Do not store or repair it, therefore, in any location
with a high temperature, high humidity, high magnetic fields
or high dust concentration. (Since the pickup contains a
powerful magnet, it must not be brought near any
magnetized objects.)
c.Do not apply strong external pressure to the pickup or subject
it to impact. Actions like these can cause the printed circuit
board to crack or malfunctioning to occur.
d. The pickup is a single integrated part which has been very
precisely adjusted. Therefore, its adjustment points and set
screws must not be touched.
2. How to prevent static during handling
a. When replacing any of the parts, disconnect the power plug
from the unit being repaired.
b. All measuring instruments, tools and repair equipment must
be grounded. Cover the work bench where the repair work
will be done with a grounded electrically conductive sheet.
c.Ground the metal part of the soldering iron in order to
safeguard against leakage of electricity from the heater.
CAUTION - USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
ACHTUNG - WENN ANDERE ALS DIE HIER SPEZIFIZIERTEN BEDIENUNGS- ODER JUSTIEREIN-
RICHTUNGEN BENOTZT ODER ANDERE VERFAHRENS-WEISEN AUSGEFUHAT WERDEN, KANN DIES ZU
GEFAHRLICHER STRAHLUNGSEXPOSITION FOHREN.
ATTENTION - L’EMPLOI D’'ORGANES DE COMMANDE OU DE REGLAGE, OU L'EXECUTION DE
PROCEDURES, AUTRES QUE CEUX SPECIFIES DANS LE MODE D’EMPLOI, PEUT PROVOQUER UNE
EXPOSITION DANGEREUSE AU RAYONNEMENT.
OPGELET - HET GEBRUIK VAN REGELAARS OF HET MAKEN VAN AFSTELLINGEN E.D. DIE NIET IN DEZE
GEBSRUIKSAANWIJZING ZIJN BESCHREVEN KAN LEIDEN TOT SCHADELIJKE STRALINGEN,
VARNING! OM APPARATEN ANVANDS PA ANNAT SATT AN VAD SOM BESKEIV 1 DENNA BRUKSAN-
VISNING, KAN ANVANDAREN UTSATTAS FOR OSYNLIG LASERSTRALNING, SOM OVERSKRIDER
GRANSEN FOR LASERKLASS 1.
CAUTELA - L'USO DI COMANDI, AGGIUSTAMENTI O PROCEDIMENTI DIVERSO DA QUELLO QUI SPECIFI-
CATO PUO DAR LUOGO AD ESPOSIZIONE A RADIAZIONI PERICOLOSE.
VAROITUS! LAITTEEN KAYTTAMINEN MUULLA KUIN TASSA KAYTTOOHJEESSA MAINITULLA TAVALLA
SAATTAA ALTISTAA KAYTTAJAN TURVALLISUUSLUOKAN 1 YLITTAVALLE NAKYMATTOMALLE
LASERSATEILYLLE.
d. Repair personnel must wear grounding bands around their
wrists to discharge static picked up by their bodies. These
bands are grounded through a resistor (with a 1Mlt
resistance).
Note: Under no circumstances must be the grounding bands be
grounded without a resistor (with a 1MIF resistance) since
doing so involves the risk of electric shocks.
Since static in the clothes of the repair personnel will not be
discharged by wearing grounding bands, every care must be
taken not to allow the clothes to touch the pickup and
semiconductors (particularly the ICs).
e. The pickup, which is a single integrated part, is kept in a
conductive bag. Use this bag to convey the pickup from one
place to another. in order to avoid damage resulting from
static which may occur when the pickup is removed from the
bag, make sure that it is not placed on top of the bag.
3. Cleaning the lens surface
a. Blow off dust on the lens using the kind of air brush which is
used for cameras.
b. Remove stubborn dirt with a cotton swab dipped in isopropyl
alcohol. Do not use any other type of cleaning fluid since it
may mark the plastic lens.
Notes: @®Do not use too much isopropyl alcohol: the excess may
seep inside the pickup.
@The lens is held in place by a very feeble support
spring. Therefore, when cleaning the lens, avoid
applying any more force by the cotton swab than is
necessary since this may bend the support spring out of
shape.

CD MECHANISM REMOVAL
1)
1)
3)
2)
=
~~
2
~~
4)
5)
6)
7
~~
3)
(1)
1)
2)
3)
4)
5
a
6)
Preparations
Do not apply unnecessary force to the pickup when handling it. Care should be taken not even to touch the lens or drive
circuit sections.
Do not apply unnecessary force (do not pull or push it forcefully) to remove the disc tray from its inside position.
Unnecessary force may break the teeth on the tray gear (CM6).
In the descriptions which follow, the numbers in the parentheses after the parts are reference numbers in the exploded views.
Refer to these views.
TRAY MOVE GEAR
(CM3) TRAY GEAR
Pair See (CM6)
Removing and installing the disc tray
Remove the stop screw (Y1) of the disc tray (31). (0)
Pull the disc tray (31) all the way forward by turning the
tray drive gear (CM12) clockwise. (@)
Note: Do not take hold of the disc tray (31) and pull it
out by force.
Push the catch on the disc tray (31) in the direction shown
by the arrow, and draw out the disc tray (31).
To install the disc tray, turn the gear (CM12) in the direc-
tion of ‘the arrow as far as it will go. (@)
Align the disc tray (31) with the mechanism chassis (CM39).
Push the disc tray (31) toward the rear, and interlock it
with the tray drive gear (CM12) as shown in Fig® .
Secure it with the screw (Y1) which was removed in step 1).
TIMING
X GEAR
DISC TRAY REPLACEMENT
2-TH TOOTH OF TRAY GEAR
Disassembling the mechanism
Removing the pickup block
Remove the disc tray (31). (Refer to steps 1), 2) and 3) of
the section entitled "Removing and installing the disc
tray.")
Turn the tray drive gear (CM12) counterclockwise (@), and
move the pickup in the direction of arrow (@) as far as it
will go.
Remove the spring wire (CM27) with tweezers. (@)
Remove the screw (CM11), and also remove the disc tray
(31) and washer (CM13). (@)
Now remove the pick rack gears (CM16 and CM19).
Note: It will not be possible to remove the pick rack
gears (CM16 and CM19) unless the pickup has
‘been moved all the way in the direction of arrow
(@).
The pickup block can now be removed by taking out the
screw (CM51).
Note: If the timing gear (CM23) is in the state shown by
"X" in the figure on the right, put it in the state
shown by "©".

MECHANISM REMOVAL (CD) ——-—+—_—__
(2) Replacing and lubricating the pickup
1) Pull out the two pickup rails (CM43) from the chassis (CM50).
2) The pickup (CM52) can now be removed once the two pick-
up rails (CM43) have been taken out.
3) When the pickup has been replaced, be sure to wipe the
two pickup rails (CM43) cleanly and apply grease (FLOIL G-
4748) around the entire circumference of the rails and along
their entire length.
4) Pass the two pickup rails (CM43) through the new pickup
(CM52), insert them into the chassis (CM50), and fix them in
place at an angle of 45° as shown in the figure.
Notes: a. When applying the grease, do not allow any
grease to adhere to any other parts.
FLOIL
b. If a part (indicated by the dots in the figure) of (G-474B)
(G-474B)
the chassis (CM50) is damaged in the process of re-
moving or inserting the two pickup rails (CM43)
from or into the chassis (CM50), wipe the damaged
area with a cloth dipped in alcoho! (normal hex-
CM50 BREAK
ane), and bond it together using a bonding agent
(Cemedine #575).
(3) Replacing the loading/sled motor 7
SHAFT
1) The loading/sled motor (CM38) can be removed from the
chassis (CM39) once the screw (CM24) securing the motor
(CM38) is removed. ,
2) Mount the new loading/sled motor (CM38) onto the chassis
(CM39) using the screw (CM24).
aoe (4) Checking the loading/sled motor’s operation
1) As shown in the figure, connect an ammeter and a DC pow-
er supply to the loading/sled motor (CM38), and set the tray
open and end switches to the "off" [open] positions.
2) Check that the pickup (CM52) moves smoothly without stop-
ping from the inner circumference of the compact disc to-
ward its outer circumference when a DC 0.6V voltage is ap-
plied from the DC power supply.
3) The disc tray is housed inside and the gear (CM9) slips when
a DC 4V voltage is applied from the DC power supply.
Check that the ammeter indicates 120mA or more at this
time.
SLED MOTOR
CM38
ATTACHMENT ANGLE SPINDLE RE
MOTOR BK AMPERE VOLTAGE
METER
0.6V
LOADING/ SLED OR) o
MOTOR BL|O -
TRAY OPEN/
END SWITCH
OF MOTOR

MECHANISM REMOVAL (CD)
4) Check points for CD mechanism assembly and
lubrication
(1) Lubricating and mounting the tray slide
1) Apply grease (FLOIL G-474B) to the area indicated by the di-
agonal in the figure.
2) When inserting the tray slide (CM15), set the position where
it is installed vis-a-vis the base/tray timing gear (CM20) as
shown in the figure. @
BASE / TRAY
UP DOWN SLIDE
CM14
TRAY SLIDE—,
CM15
" FLOIL(G-474B) ~—
(2) Installing the tray gear
1) Move the tray slide (CM15) in the direction of the arrow ©.
2) Engage the gear section of the tray slide (CM15) with the
inner gear of the tray gear (CM6) at the center line, as
shown in the figure.
3) Align the tray move gear (CM3) with the position (OC) of the
hole in the outer gear of the move gear (CM3) and engage
the tray move gear (CM3), as shown in the figure.
TRAY SLIDE
TRAY GEAR
CM6
: TRAY MOVE
| GEAR CM3
TIMING GEAR (CM20)
(3) Installing the base up/down slide and timing gear
1) Move the base up/down slide (CM14) in the direction of the
arrow @, and set the gears at the positions shown in the
figure.
2) Insert the timing gear (CM23), and mount it using the screw
(CM21).
3) Turn the timing gear (CM23) counterclockwise.
TIMING GEAR
CM23
BASE UP/DOWN
SLIDE CM14
©
SCREW (CM21)
@
4) Hook the gear tension spring (CM22) onto the timing
gear (CM23).
@) GEAR TENSION SPRING
TIMING GEAR (CM23)
GEAR TENSION SPRING (CM22)

MECHANISM REMOVAL (CD)
(4) Lubricating the base lever
Apply grease (FLOIL G-474B) to the
CEMEDINE
1575
aan
"gs |
BASE CHASSIS
PULL UP
SPRING
(6) Arranging and securing the leads
(5)
1)
2)
3)
Lubricating the pickup sled gear and clutch gear
Apply grease (FLOIL G-474B) around the entire circumference
of the lower gear of the pickup sled gear (CM12), as shown
in the figure ( ea).
Apply grease (G- 333) around the entire circumference of the
outer clutch gear (CM9).
Apply grease (FLOIL G-474B) to the #8 part of the outer
clutch gear (CM9) where it makes contact with the inner
clutch gear (CM8).
PICKUP SLED GEAR
(}
1) As shown in the figure, set the pickup (CM52) at a position on the innermost circumference of the compact disc, and pass the
leads from the pickup (CM52) and spindle motor (CM48) through pin (a) of the chassis (CM39).
Arrange the leads from the load-
ing/sled motor (CM38) and sensor switch (micro switch) (CM26) by passing them through point (b) in the chassis (CM39). After
securing the leads with the lug (CM41), check that the pickup (CM52) moves smoothly without the leads interfering with its
movement.
2) If no problems arise in the @ check, secure the points shown in the figure using a bonding agent (Cemedine #575).
FLOIL(G-474B)
par BE NOT SLACK
TO CN101 CD PCB
NOTE THE LUG PORTION
ISS] RSXSSSSA ASS ASSSSSSSSSSSY
CUSHION

SERVICE MODE
Specifications
To enter any service mode other than timer debugging, first simultaneously press the OPEN/CLOSE and BAND keys on the CT unit.
This accesses the service mode entry state. Now press one of the buttons on the CT unit to enter a service mode. As the service
mode entry state is discontinued after 1 second elapses, the system will enter a service mode only if the next key is pressed within
one second.
1. Confirm the clock
- When the CLOCK key is pressed during the service mode entry state, a rectangular wave with a frequency of one- fourth that
of the oscillating frequency (1.048576MHz) is output from the micro processor's port CLKOUT.
- The clock output is stopped by pressing either the POWER or SET CLEAR key.
2. Timer debugging
- When the FAST key is pressed, the current time advances one minute and the seconds readout changes to 55 seconds. If the
key is held down the time advances continuously.
- The FAST key, a concealed key not actually mounted to the set.
Note: For timer debugging, the service mode entry state (entered by simultaneously pressing the
12k ohm
OPEN/CLOSE service mode entry key and the BAND key) is not necessary. L
3. Checking the key input signal connections |
- Enter this mode by pressing the MEMORY(TUNER) key during the service mode entry state. =—
- The entire LCD goes out once this mode is entered.
- In this mode, as keys on the CT unit (or remote control unit) are pressed segments on the LCD corresponding to each key on
a one-to-one basis come on (i.e. the lit portions gradually increase). (Refer to Table 1.)
FUNCTION
PST UP
pst DOWN
FM/TUNE MODE
WIDE
AWo
area
TIME / FADE
REPEAT
STOP fone
CD MEMORY PROG.
KEY
DISPLAY
CLOCK
SLEEP
TUNING UP
TUNING DOWN
WAKE UP
TIMER
SET / CLEAR @ |
@ : Releases the key checking mode and returns the set to the normal mode.
PLAY / PAUSE
RANDOM
TABLE 1 : CORRESPONDING KEYS AND DISPLAYS IN THE KEY CHECKING MODE
oes REC, | WIDE CLOCK INTRO RANDOM OFF SIDEA
SLEEP OY ap ppp EM 12 Spy :«CON SIDE B
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TIMER REC DISC ST TRACK AUTO MONO FADE TIME EDIT
TWN
1234567891011121314
15>
ONE
ALL
CONT
FIGURE 1 : LCD( LIQUID CRYSTAL DISPLAY )
~9-