Sanyo DC-D3 User manual

IFILE NO. I
Service Manual Mini Component System D(2-D3 (AU)
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Contents PRODUCT CODE No.
129 471 04
.Specification .............................. 1Exploded View (Tape Mechanism) ............. 20
Operating the Reset Switch .................. 1Parts List (Tape Mechanism) . . . . . . . . . . . . . . . . . 21
Laser Beam Safety Precaution ................ 2LCD Block Diagram ........................ 22
System Connection ........................ 2lC Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removal and installation ..................... 3lCVoltageof CD . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Disassemble ofthe CD Mechanism ............ 5Schematic Diagram (CD) .................... 28
CD Player Adjustment ...................... 9Wiring Diagram (CD) ....................... 30
Tuner Adjustment .......................... 10 Schematic Diagram (Front) ................... 32
Tape Deck Adjustment ...................... 11 Schematic Diagram (Tuner) .................. 34
Exploded View (Cabinet&Chassis) ............ 13 Schematic Diagram (Amplifier) ................ 36
Parts List (Cabinet&Chassis) ................ 14 WwingDiagram( Amplifier) . . . . . . . . . . . . . . . . . . . 38
Parts List (Speaker) ........................ 14 Schematic Diagram (Deck) ................... 40
Exploded View (CD Mechanism) . . . . . . . . . . . . . . 18 Wtring Diagram (Deck) . . . . . . . . . . . . . . . . . . . . . . 41
Parts List (CD Mechanism) ................... 19
This servicemanualumsistsof “DC-D3LJ”(Main unit),”RB-D3” (Remotecontrcd),
. ...’ “SX-D3L” and “SX-D3R” (Speaker system). REFERENCE No. SM580508

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SPECIFICATION
TUNER SECTION
Reception frequency
FM . . . . . . . . . . . . 87-5 -108 MHZ
AM . . . . . . . . . . . . 522- 1710kHz
CASSETTE DECK SECTION
Track system . . . . . . .
Frequency response . .
Signal to noise ratio . .
Wow &Flutter . . . . . .
Tape speed . . . . . . . .
Fast forward and
rewind time . . . .
CD PLAYER SECTION
Channels . . . . . . . . . .
Sampling frequency . .
Pick-up . . . . . . . . . . . .
Frequency response . .
Wow&Flutter . . . . . .
AMPLIFIER SECTION
Output power . . . . . . .
Bass expander . . . . . .
,’ Input . . . . . . . . . . . . . .
outputs . . . . . . . . . . .
OPERATING THE
4-track, 2channel stereo
80 6iZ -13.5 kHz
50 dB
0.15 %(WRMS)
4.75 cm Isec.
Approx. 110 sec. (C-60)
2channel stereo
44.1 kHz
optical 3-beam semiconductor laser
20 HZ -20 kHz
Below measurable limits
5WX2
(at 4ohms, 10% distortion)
+8dB (100” Hz)
VIDEO :300 mV /50k ohms
SPEAKERS :4 ohms
PHONES :8-32 ohms
GENERAL
Power requirements . .
Power consumption . .
Dimensions (WX HxD)
Weight . . . . . . . . . . . .
-. d
. . . . AC :230-240 V, 50 tiz
. . . . 38 W
. . . Approx. 270x283x211 mm
. . . . Approx. 3.7 kg
WIRELESS REMOTE CONTROL
Power requirements . . . . . . 2“AA” batteries
Dimensions (W xHxD) . . . Approx. 40x 168x 18.5 mm
Weight ................ Approx. 48 g(without batteries)
SPEAKER SYSTEM
Type . . . . . . . . . . . . . . . . . . .
Unit used ...............
Maximum power-handling
capacity . .
Nominal impedance . . . . . . .
Dimensions (W xHxD) . . . .
Weight .. ... . . . . . . . . . . . .
2way bass reflex
Woofer :12 cm cone type
Tweeter :2 cm piezoelectric
10 W(peak)
4ohms ..
Approx. 180x285 x211 mm ““
Approx. 1.4 kg (per speaker)
Specifications subject to change without notice.
.... .. .. . . .... . .. .. . ... . ... ..
RESET SWITCH
This CD /TUNER and TAPE DECK/ PRE-AMPLIFIER unit is provided with areset switch on the rear panel. The reset switch
serves to initialize 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.
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LASER BEAM SAFETY
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PRECAUTIONS
●Pick-up that emits alaser beam is used in this CD player.
CAUTION :
USE OF CONTROLS OR ADJUSTMENTS
OR PERFORMANCE OF PROCEDURES
OTHER THAN THOSE SPECIFIED
HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE
LASER OUTPUT ..... 0.6 mW Max. (CW)
WAVELENGTH . . . . . 790 nm
/
ICAUTION- INVISIBLE LASERRADIATIONWHENOPENAND
INTERLOCKSDEFEATEO.AVOID EXPOSURETO BEAM.
ADVARSEL-USYNLIG LASERSTRALINGVEDABNING, NAR
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FOR STR&JNG.
VARNING -DSYNLU2 IASER SIRALNING N@ OENNA DEL AR OPPNAD WI+ SPARR
AR URKOPPLAD. STFIALEN AR FARLIG.
VORSICHT -UNSICHTBARE LASERSTRAHLUNG TRITT AUS, WENN
OECKEL GEOFFNET UND WENN SICHERHEITSVERRIEGELUNG
UBERBRIXKT IST. NICHT, DEM STRAHL AussET2EN.
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SYSTEM CONNECTION
FM outdoor aerial I
AM loop aerial
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Video
equipment
Mindoor aerial
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Rch speaker Lch speaker
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Output leads
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. . .. . .
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===1 To an AC outlet 1

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REMOVAL AND INSTALLATION
●Disconnect the power cord’s plug from the electrical outlet.
.All wiring should be returned to the original position after work is completed.
●First have ready many the new FIXERS (614 129 2496) for replacement.
.Arrange the lead wires so that they are not near the heat sink.
a. CABINET
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TAPE

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REMOVAL AND INSTALLATION
d. CD MECHANISM BLOCK -.4 A
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CD .MAIN P.WB
AMPL1 FIER /TUNER P.W.B

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DISASSEMBLE OF THE CD MECHANISM
1. Preparations
1)Do not apply unnecessary force to the pickup when handing it. Care should be taken not even to touch the lens of dr e
d
circuit sections.
2) 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).
3) In the descriptions which follow, the numbers in the parentheses after the parts are reference numbers in the exploded
views. Refer to these views.
2. Removing and installing the disc tray
1)Remove the stop screw (YI )of the disc tray (31). (0)
2) Pull the disc tray (31) all the way forward by turning the tray DISC
drive gear (CM12) clockwise. (@)
Note :Do not take hold ‘of the disc tray (31) and pull it out
by force.
3) Push the catch on the disc tray (31) in the direction shown
by the arrow, and draw out the disc tray (31). (@)
4) To install the disc tray, turn the gear (CM12)-in the direction
of the arrow as far as it will go. (@)
5) Align the disc tray (31) with the mechanism chassis (CM39).
Adjusting second tooth of the tray move gear (CM3). (C9)
6) Push the disc tray (31) toward the rear, and interlock it with /
TRAY REPLACEMENT
SECOND TOOTH OF TRAY MOVE GEAR
the tray drive gear (CM12) as shown in Fig. Q.
7) Secure it with the screw (Yl )which was removed in step 1).
3. Disassembling the mechanism
(1) Removing the pickup block
1) Remove the disc tray (31). (Refer to steps 1), 2) and 3) of )
the section entitled “Removing and installing the ,disc t(ay”)”
2) Turn the tray drive gear (CM12) counterclockwise’””(0), and
move the pickup in the direction of arrow (@) as far as it will
go. R
3) Remove the spring wire (CM44) with tweezers. (@)
4) Remove the screw (CM11 ), and also remove the tray drive
gear (CM12) and washer (CM13). (0)
5) 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 (@).
6) The pickup block can now be removed by taking out the
screw (CM51 )and spring coil (CM49).
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
“o”.
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TUNER ADJUSTMENTS TAPE DECK ADJUSTMENTS
●Use aplastic screw driver for ad,ustmen;s. .Speaker impedanCe :8Ohm
●Standard Output :500mW ●FM MODE switc.h :STEREO
a. PREPARATIONS FOR ADJUSTMENTS
●Measuring instruments, tools.
(1) Test tape MTT-t t4M (10 kHz) (4)
TCW-211 (1,500 Hz) (Optional)
MTT-111 (3,000 Hz) (5)
AC-224 (NORMAL) (6)
(2) Oscilloscope: (Atleast 10MHz, dual channel) (7)
(3) Oigital voltmeter (lnputimpedancel ML20r more) (8)
b. H;ADREPLACEMENTAND AZIMUTH ADJUSTMENT
(a) Head replacement
Automatic distortion analyzer or AC voltmeter
( - 80dB, input impedance 1ML7 or more)
AF-oscillator (400 Hz,500mV RMS)
Frequency counter (5 MHz or more)
Frequency counter, probe.
Screwdrivers (non-metalic) for adjustments.
L~TP209
R2124
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AMPLIFIER/TuNER PWB TP206
C2134
7P205
R2130
12173
(1)
(2)
(3)
(4)
(b)
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-1.2)
(?3)
After replacement, demagnetize the heads by
using adegausser.
Be sure to clean the heads before attempting to
make any adjustments.
Besureboth channels(l and2)are the same
level (Using adual-channel oscilloscope).
All wiring should be returned to the origkal
position after work is completed.
1
1P203 ,: L&:, ❑
c2103 1’ CT272
TP207 ‘It! ~2% ‘2’72
C2156, %, #’, ~,o;’’r,~,
r-f IUud
SG RF Level :75 ohm Open Voltage dB~V
Anlenha: 750hmunbalanced direct, MocJulation:l kHz.
a. ADJUSTMENTS OF FM BAND Dev. :~22.5 kHz (MONO) ~22.5 kHz(MAlN) ~6.75 kHz(PlLOT)
x
VTVM
Oscilloscopeor
DC voltmeter
Adjusting
I
Connections
Step Position of
Circuit I
56 Frequency
Input Adjustment
output tuning dial
Connect swwp
IF Connect swwp
1generatorto generatorto — —
TP203(H), TP204(G) TP205(H). TP206(G) “
Connect to Digital
Tuning 87.s MHz Low end —
2—DC voltmeter
coverage TP 201 (H), TP 202 (G) 108.0 MHz High end —
Head adjustment
4
0.9-1.4V .
Iessthan 9VLoad atesttape in Tape Deck”A” (MTT-114N,etc.:l OkHz)for
azimuth adjustment.
Press the PLAY button.
Use aflat-tip ( - ) screwdriver to turn the screw for normal azimuth
adjustment so that the left and right outputs are maxlmtzed at the
same phase during playback.
Press the STOP butfon.
Repeat procedure for Tape Deck” B”.
After completion of the adjustment, use thread lock (TB 1401 B) to
secure the azimuth-adjustment screws.
1
Connect swwp
3Trackjng Connect to VTVM 90.0 MHz 90.0 MHz —
generator to
TP207(H), TP204(G) speaker outgut 106.0 MHz 106.0 MHz .-
SG Modulation :1kHz, 30%
IRE LooD Antenna
]. ADJUSTMENTS OF AM BAND
Step
1
2
3
—
Position of VTVM
SG Frequency Adjustment Oscilloscope or
tuning dial DC voltmeter
a‘(4)
(5)
(6)
.,
●
(1)
(2)
(3)
(4)
Adjusting Connections
Circuit Input output
IConnectswwp IConnect swwp
IF generator to aeneratorto —I I —h
ITP212(H).TPZ04(G)I TP ~1 (H),TP 206(G)
522 kHz Low end T2 t73 1.O-1.4V
1710kHz High end Iessthan 8.5 V
Vol Inwter
~b] [E] II
,hase&
0
Phase alignment
Prepare adual-channel oscilloscope.
Set so that the left and right ranges of the oscilloscope are the same.
Play the test tape (MTT-114N, etc.: 10 kH.z).
Adjust so that the waveforms for the left and right channels are in
alignment, as shown in the illustration.
Connect AM SG to
Track, ng Connect to VTVM
Test Loop
(SG =80dBpV) speaker output
-1o- -11-

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