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R




FILE NO.


Service Manual Desktop Audio System
DTA-100 (DE)




PRODUCT CODE No.
164 065 06
CONTENTS


Specifications ................................................................... 1
Laser beam safety precaution .......................................... 1
Tuner adjustment ............................................................. 2
Exploded view (cabinet and chassis) ............................... 3
Parts list ........................................................................... 4
IC block diagram and description ..................................... 6
IC & Transistor voltage .................................................... 8
Schematic diagram .......................................................... 10
Wiring diagram (CD MAIN A SIDE) .................................. 12
Wiring diagram (CD MAIN B SIDE) .................................. 13
Wiring diagram (DISPLAY & HEADPHONE) ................... 14
Wiring connection ............................................................ rear




REFERENCE No. SM5810251
SPECIFICATIONS
(CD PLAYER SECTION) (RADIO SECTION)
Channels ............................... 2 channels stereo Tuning range ......................... FM : 87.5 - 108 MHz
S/N ratio ................................ 60 dB AM : 522 - 1,611 kHz(9 kHz step)
Wow & Flutter ........................ Below measurable limits (GENERAL SECTION)
Sampling frequency .............. 44.1 kHz Power output ......................... AC : 1.5 W/ch (10% T.H.D)
Quantization .......................... 16 bits linear/ch Speaker ................................. 8 cm x 2, 4ohm
Pickup light source ................ Semi-conductor laser Terminal impedance ............. PHONES : 32 ohms
Pickup wave length ............... 790 nm Power source ........................ DC : 9 V (AC adaptor)
Laser output .......................... Continuous wave max. 0.6 mW Dimensions ........................... 430 (W) x 150 (H) x 50 (D) mm
Weight (approx.) .................... 1.5 kg (Without including batteries)


This is a basic specifications.
Specifications subject to change without notice.
LASER BEAM SAFETY PRECAUTION

· Pickup that emits a laser beam is used on this CD section.

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)
WAVE LENGTH ................. 790 nm




CAUTION ­ INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL ­ USYNLIG LASER STRÅLING VED ÅBNING, NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION, UNDGÅ UDS ÆTTELSE
FOR STRÅLING.
VARNING ­ OSYNLIG LASER STRÅLNING NÄR DENNA DEL ÄR ÖPPNAD
OCH SPÄRR ÄR URKOPPLAD. STRÅLEN ÄR FARLIG.
VORSICHT ­ UNSICHTBARE LASERSTRAHLUNG TRITT AUS, WENN
DECKEL GEÖFFNET UND WENN SICHERHEITSVERRIEGELUNG
ÜBERBRÜCKT IST. NICHT, DEM STRAHL AUSSETZEN.
VARO ­ AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.




- 1 -
TUNER ADJUSTMENTS
This is a basic adjustments.
· Use a plastic screw driver for adjustments.
· Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
· Set of unit
Supply voltage : DC 12V
Speaker : 8 ohms
Standard output : 50 mW
Function switch : RADIO


a.PARTS LOCATION




b. AM ADJUSTMENT Band switch : AM
Adjusting Equipment Step Gen. Set Radio To obtain MAX. output adjust.
Circuit Connection freq. freq. To Measurement
IF
1 450kHz 1611kHz T702
AM Connect Digital Voltmeter to
2 522kHz 522kHz T701 (Adjust the voltage to 1.42 +/- 0.2V)
band Collector of Q404
3 1611kHz 1611kHz Confirm the voltage to 7.05 +/- 0.3V
Tracking Connect VTVM and 4 ohm
4 603kHz 603kHz L703 ant. Coil.
load across speaker terminals.
Signal Generator coupled by
5 1404kHz 1404kHz TC702 ANT-TRIMMER.
a loop antenna.
Output level must be below Repeat steps 4 and 5 obtain Maximum output.
6
reference output.



c. FM ADJUSTMENT Band switch : FM
Adjusting Equipment Step Gen. Set Radio To obtain MAX. output adjust.
Circuit Connection freq. freq. To Measurement
FM Connect Digital Voltmeter to
1 87.5MHz 87.5MHz T701 (Adjust the voltage to 4 +/-0.2V)
band Collector of Q404
2 107.9MHz 107.9MHz Confirm the voltage to 8.1 +/- 0.2V
Tracking Connect VTVM and 4 ohm
3 90.1MHz 90.1MHz L702(FM RF coil)
load across speaker terminals.
Signal Generator to ANT.
4 106.1MHz 106.1MHz TC701 ANT-TRIMMER.
Output level must be below
reference output. 5 Repeat steps 3 and 4 obtain Maximum output.

- 2 -
EXPLODED VIEW(CABINET & CHASSIS)
Y13 21
26
23
Y13
Y10
21

Y12 20 Y10
54
25 22

Y13
24
55 Y08 Y09 Y11 20
Y08 22
Y10
Y12
Y07
17 73 19
28 16
Y09
Y03
- 3 -




16 55
29 11 Y08
10 21
13 72 27 Y13
12
Y04 16 17
Y13
Y06
3
Y05
15
9 Y06
Y05 Y12 20
14 54
1 Y02 25 22
Y14 Y02 Y13


Y02 24

Y12
8
Y14
30 71
PARTS LIST
PRODUCT SAFETY NOTICE
EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH THE
IEC SYMBOL ! IN THE PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN
OF SPECIAL SIGNIFICANCE. WHEN REPLACING A COMPONENT IDENTIFIED , USE ONLY THE REPLACEMENT PARTS
DESIGNATED, OR PARTS WITH THE SAME RATINGS OF RESISTANCE, WATTAGE OR VOLTAGE THAT ARE DESIGNATED
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 listed. To know those values, refer to the schematic diagram.
Regular type resistors are less than 1/4W carbon type and chip resistors.
Regular type capacitors are less than 50V and less than 1000µF of Ceramic type and Electrolytic type.

REF.NO. PART NO. DESCRIPTION
PACKING & ACCESSORIES Y07 645 045 5469 TAPPING SCR 2X6,
REF.NO. PART NO. DESCRIPTION MECH MTG PLATE TO F CAB
645 053 4324 INSTRUCTION MANUAL Y08 645 045 5469 TAPPING SCR 2X6,
645 053 4331 CARTON INNER MAIN PCB TO F CAB
645 031 1703 POLYBAG Y09 645 045 5469 TAPPING SCR 2X6,
645 045 5636 POLY BAG,I/B JACK PCBTO REAR CAB
645 045 5629 POLY BAG,MAIN UNIT Y10 645 031 3684 TAPPING SCR2X10,REAR CAB
645 045 6770 POLYFOAM,SPEAKER PORTECT Y11 645 045 5483 TAPPING SCR 2X23,REAR CAB
645 051 1639 POLYFOAM SHEET Y12 645 045 5490 TAPPING SCR 3X6,SPK TO SPK F CAB
645 051 1646 POLYFOAM SHEET Y13 645 045 5506 TAPPING SCR 3X20,
645 053 4355 CARTON OUTER FOR 4 SE SPK REAR CAB TO SPK CAB
645 045 6114 GIFT BOX HANDLE Y14 645 045 5551 PHOTO LENS SCR NUT,W/NI-PLATED
! 645 051 1547 AC ADAPTOR ELECTRICAL-PARTS
645 045 6732 REMOTE CTL,FISHER REF.NO. PART NO. DESCRIPTION
645 045 4646 ASSY SPK NET B 54 645 045 5209 SPEAKER 3",W/BLACK CAP
55 645 045 5902 SPEAKER WIRE,
CABINET & CHASSIS W/MONO PLUG SPK L/R
REF.NO. PART NO. DESCRIPTION
1 645 045 5346 CD DOOR LENS DISPLAY P.W.BOARD ASSY
3 645 045 4714 ASSY CD LID REF.NO. PART NO. DESCRIPTION
8 645 045 6015 METAL COVER,DISPLAY PCB 71 614 316 3459 ASSY,PWB,DISPLAY(Only initial)
9 645 045 5544 CD LID OPEN SPRING D0901 645 031 3653 DIODE 1N4148
10 645 045 4684 ASSY CABINET FRONT D0902 645 031 3653 DIODE 1N4148
11 645 045 6008 GEAR MOUNTING BKT D0903 645 031 3653 DIODE 1N4148
12 645 045 6053 GEAR DAMPER,29TO-E D0904 645 031 3653 DIODE 1N4148
13 645 045 5964 CD DOOR OPEN KNOB D0905 645 031 3653 DIODE 1N4148
14 645 045 7548 DOOR OPEN HOOK D0906 645 031 3653 DIODE 1N4148
15 645 045 5537 OPEN KNOB SPRING D0907 645 031 3653 DIODE 1N4148
16 645 042 1532 CUSHION RUBBER,CD MECHA D0908 645 031 3653 DIODE 1N4148
17 645 045 6039 MECH MTG PLATE A D0909 645 045 5797 LED
19 645 045 4707 ASSY CABINET REAR D0910 645 045 5797 LED
20 645 045 5353 STAND ADAPTOR,SPK L/R, UNIT D0911 645 045 5797 LED
21 645 045 5261 STAND REAR CAB UNIT/SPK D0912 645 045 5797 LED
22 645 045 5698 STAND RUBBER FOOT NATURE RUBB IC901 645 045 4905 RPM6938-V4
23 645 051 1455 ASSY MOUNTING BAR,SCREW S0901 645 045 5155 SW TACT,PLAY
S0902 645 045 5155 SW TACT,STOP
24 645 045 4639 ASSY SPK NET A
S0903 645 045 5155 SW TACT,TU-DN
25 645 045 4653 ASSY SPK FRONT
S0904 645 045 5155 SW TACT,TU-UP
26 645 053 4812 ASSY SPK REAR L S0905 645 045 5155 SW TACT,MODE
27 645 053 4805 ASSY SPK REAR R S0906 645 045 5155 SW TACT,PROG
28 645 045 5926 CD MECHA TPP33B,KIT S0907 645 045 5155 SW TACT,PRESET-DN
29 645 045 5971 TOP FUNCTION KNOB S0908 645 045 5155 SW TACT,PRESET-UP
30 645 045 5438 SENSOR LENS,W/TAPE S0909 645 045 5155 SW TACT,BAND
645 045 5278 DISPLAY BRACKET,037DTA100240AA
FIXING PARTS 645 045 5322 BACK LIGHT LENS,037DTA100470AA
REF.NO. PART NO. DESCRIPTION 645 045 5919 LCD DISPLAY,SDT-A232-TP-O TN POS
Y02 645 036 5911 TAPPING SCR 1.7X4,DISPLAY BD 645 045 6022 LCD BRACKET
Y03 645 045 5513 MACHINE SCR 2X3, 645 045 6060 PVC SPL SHEET
GEAR TO GEAR MTG BKT 645 045 6091 FLEXIBLE WIRE 18P,
Y04 645 042 1563 TPP SCR 2X4, TO MAIN BD CN401
GEAR MTG BKT TO F CAB 645 045 6107 FLEXIBLE WIRE 19P,
Y05 645 045 5520 FBIRE WASHER,DOOR OPEN HOOK TO MAIN BD CN402
Y06 645 042 1563 TPP SCR 2X4, 645 036 5942 TAPPING SCR1.7X2,DISPLAY
DOOR OPEN HOOK TO F CAB 645 045 7678 ZEBRA CONNECTOR

- 4 -
PARTS LIST
CD MAIN P.W.BOARD ASSY REF.NO. PART NO. DESCRIPTION
L0402 645 045 4738 FIXED INDUCTOR COIL,
REF.NO. PART NO. DESCRIPTION
AL0305-101K-09-S
72 614 320 9515 ASSY,PWB,CD MAIN,
L0701 645 045 4752 FM COIL,FM OSC
DOUBLE SIDE(Only initial)
L0702 645 045 4745 FM COIL,FM RF
B0101 645 045 4783 BAND PASS FLTER,BPMB6A FM BAND
L0703 645 045 4769 AM COIL
C0001 403 366 9104 ELECT 220U M 50V,6.3X7MM
L0704 645 045 4738 FIXED INDUCTOR COIL,
CF701 645 045 4790 CERAMIC FILTER,LPU450B
AL0305-101K-09-S
CF702 645 045 4806 CERAMIC FILTER,L10.7MA5-A
Q0001 645 045 5001 TR 2SB892,PNP
CF703 645 045 4813 CERAMIC DISC,JT10.7MG18
Q0002 645 045 5087 TR DTC114ES,NPN
CN101 645 042 1761 HEADER 6P,B6B-ZR
Q0003 645 045 5094 TR KTC3205Y,NPN
CN201 645 036 5645 HEADER 16P,
Q0004 645 045 5001 TR 2SB892,PNP
FFC/DIP TYPE UP W/O LOCK
Q0005 645 045 5087 TR DTC114ES,NPN
CN401 645 045 5940 HEADER 18P,FFC/DIP TYPE
Q0006 645 045 5049 TR 8050C,NPN
CN402 645 045 5933 HEADER 19P,FFC/DIP TYPE
Q0201 645 045 5070 TR KTA1266Y,PNP
D0001 645 031 3646 DIODE 1N4001,RECTIFIER
Q0401 645 045 5032 TR 9014C,NPN
D0002 645 045 4950 ZENER DIODE 6V8,MTZ J6.8B/C
Q0402 645 045 5032 TR 9014C,NPN
D0003 645 045 4943 ZENER DIODE 5V6,MTZ J5.6B/C
Q0403 645 045 5100 TR KTC3199L GR,NPN
D0401 645 031 3653 DIODE 1N4148
Q0404 645 045 5100 TR KTC3199L GR,NPN
D0406 645 031 3646 DIODE 1N4001,RECTIFIER
Q0405 645 045 5032 TR 9014C,NPN
D0407 645 031 3653 DIODE 1N4148
Q0501 645 045 5032 TR 9014C,NPN
D0408 645 031 3653 DIODE 1N4148
Q0502 645 045 5032 TR 9014C,NPN
D0409 645 031 3653 DIODE 1N4148
Q0601 645 045 5032 TR 9014C,NPN
D0410 645 031 3653 DIODE 1N4148
Q0602 645 045 5032 TR 9014C,NPN
D0411 645 031 3653 DIODE 1N4148
Q0603 645 045 5087 TR DTC114ES,NPN
D0412 645 031 3653 DIODE 1N4148
Q0604 645 045 5087 TR DTC114ES,NPN
D0413 645 031 3653 DIODE 1N4148
Q0701 645 045 5025 TR 9018G,NPN
D0414 645 031 3653 DIODE 1N4148
Q0702 645 045 5063 TR 8550C,PNP
D0415 645 031 3653 DIODE 1N4148
Q0703 645 045 5087 TR DTC114ES,NPN
D0601 645 031 3653 DIODE 1N4148
Q0705 645 045 5087 TR DTC114ES,NPN
D0602 645 031 3653 DIODE 1N4148
Q0706 645 045 5087 TR DTC114ES,NPN
D0603 645 031 3653 DIODE 1N4148
Q0707 645 045 5087 TR DTC114ES,NPN
D0604 645 031 3653 DIODE 1N4148
Q0708 645 045 5056 TR C1815GR,NPN
D0605 645 031 3653 DIODE 1N4148
Q0709 645 045 5056 TR C1815GR,NPN
D0606 645 031 3653 DIODE 1N4148
Q0710 645 045 5018 TR 2SK118,FET
D0701 645 045 4967 DIODE 1SV101,FM VARICAP
S0401 645 045 5162 SW TACT,TS3100114C POWER
D0702 645 045 4974 DIODE 1SV149 B,FM VARICAP
S0402 645 045 5162 SW TACT,TS3100114C FUNCTION
D0703 645 045 4967 DIODE 1SV101,FM VARICAP
S0403 645 045 5162 SW TACT,TS3100114C CLOCK
D0704 645 045 4974 DIODE 1SV149 B,FM VARICAP
S0404 645 045 5162 SW TACT,TS3100114C SLEEP
D0705 645 031 3653 DIODE 1N4148
S0405 645 045 5162 SW TACT,TS3100114C TIMER
D0706 645 045 4981 ZENER DIODE 3V,MTZ J3.0A/B
S0406 645 045 5162 SW TACT,TS3100114C SNOOZE
D0707 645 031 3653 DIODE 1N4148
S0407 645 045 5162 SW TACT,TS3100114C VOL -
D0708 645 031 3653 DIODE 1N4148
S0408 645 045 5162 SW TACT,TS3100114C VOL +
D0709 645 031 3653 DIODE 1N4148
S0409 645 045 5162 SW TACT,TS3100114C X-BASS
D0710 645 031 3653 DIODE 1N4148
T0701 645 045 5131 AM OSC COIL,AM OSC 005-044P
IC001 645 045 4851 IC KIA78L05BP-AT,
T0702 645 045 5124 AM IFT COIL,106-088
POSITIVE VOLTAGE REGULAT
T0703 645 045 5117 DC-DC CONVERTER,7E6-1042
IC002 645 045 4851 IC KIA78L05BP-AT,
TC701 645 045 4837 TRIMMER 10PF,CVN610
POSITIVE VOLTAGE REGULAT
TC702 645 045 4837 TRIMMER 10PF,CVN610
IC101 645 045 4868 IC TA2092N,
VR201 645 045 5193 SEMI-FIXED,EVND8AA03B
PWR DRIVE IC FOR CD PLAY
X0301 645 045 4820 CERAMIC RESONATOR
IC201 645 045 4875 IC TA2065F,
X0401 645 045 5216 CRYSTAL
CD FOCUS TRACKING SERVO
645 045 5957 HEAT SINK,FOR IC501
IC301 645 045 4882 IC TC9284BF,
645 045 5759 SHIELD WIRE AWG32,2C UL2851
CD SINGLE CHIP PROCESSOR
645 045 5780 COPPER WIRE,FOR C714
IC302 645 036 5782 IC BA4510F,OPERATIONAL AMP
645 045 5414 SPONGE,FOR L701, L702
IC401 645 045 4929 IC TC9314F 049,
645 045 4592 ASSY BAR ANT
SINGLE CHIP DIGITAL TUNI
645 045 4776 FERRITE BAR,FOR L703
IC501 645 045 4844 IC TA8227P,
645 045 5223 ANT BRACKET,037DM9096990AA
LOW FREQUENCY PWR AMP
IC601 645 045 4899 IC TC4052BFN,
DIFF 4 CHANNEL MULTI/DEM
IC602 645 045 4936 IC PT2256,
DUAL ELECTRONIC VOL CTL
IC701 645 045 4912 IC TA2104AFN,
3V AM/FM 1 CHIP TUNER IC
J0401 645 031 1208 SW PUSH,CD DOOR
L0401 645 045 4738 FIXED INDUCTOR COIL,
AL0305-101K-09-S

- 5 -
PARTS LIST
HEADPHONE P.W.BOARD ASSY
REF.NO. PART NO. DESCRIPTION
73 614 316 3466 ASSY,PWB,HEADPHONE(Only initial)
D0801 645 045 4998 DIODE 1N5391
J0801 645 045 5179 JACK STEREO,W/SW TC38-020-05-04
J0802 645 045 5186 JACK SPEAKER,MONO ST-002
J0803 645 045 5186 JACK SPEAKER,MONO ST-002
J0804 645 031 1253 JACK DC PWR,PWR UIC-18-073-02


IC BLOCK DIAGRAM & DESCRIPTION
IC101 TA2092 (POWER DRIVE) IC201 TA2065 (CD FORCUS TRACKING SERVO)
PW GND




24 DMEO

23 DMEN




17 COSC
22 DMEP
PW GND
OUT + 4




OUT + 3




18 OSCI
OUT - 4




OUT - 3




19 GND
SVCC1




16 FSO
PVCC4




PVCC3




15 FSN
21 SEL



20 Vcc
SGND
VIN4




VIN3



24 23 22 21 20 19 18 17 16 15 14 13

- + + -




25
DFCT




FS
FEL2




14
DM




3 STATE
FMSO




26




FMS




FSOSC
DET
FEL1




13
- + + -




27
FMSN FHLD




12
4 5 6
FE1
1 2 10 11 12




11
3 7 8 9




28
FMSP




MD
PW GND




PW GND
VCI
OUT + 1

VIN1




PVCC2

OUT - 2
OUT - 1




VRI




VIN2
PVCC1




OUT + 2




FEO




10
29
THLD




LD




FE
FEN




30



TS2
TS2D




9
IC301 TC9248 (CD SINGLE CHIP PROCESSER) FEP




8
31
TS2N
PDCNT




2VREF
DTSC1


DTSC2
MONIT


GNDA
VCOF




VDDA




VREF
RFRP
SBAD
TMAX




TEOF
TESH
LPFN
LPFO




FEL1
FEL2
FKIC
FCSI
PDO




RF1




SEL
FE1




DFIN




7
TS1
TS2P
32

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
TESTX 85 SBAD




6
40 DMPC
33




TS1N
HS 66
PLL Circuit Data slicer AD Converter 39 DMFC




RFRP
GNDD 67 RFRP




5
38 DMON
34




TS1P
2VR
Forcus/




ADD
SPDA 68 Internal Tmax Detection Circuit Tracking 37 TEST
35




Status CLV Servo Circuit Servo
TSO
TS

COFS 69 36 FMFB

WDCK 70 Sync ZVRO
35 TEST1




4
Correction Separation TEL1
36




CHCK 71 ACircuit Address




BOTTOM
Output