Onkyo CDR-205TX Service Manual
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Onkyo CDR-205TX Service Manual

Onkyo CDR-205TX Service Manual

Audio cd recorder
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SERVICE MANUAL
AUDIO CD RECORDER
CDR-205TX
MODEL
AUDIO CD RECORDER
DUAL OPTICAL INPUT
ON / OFF
CD DUBBING
STANDBY
INPUT
FINALIZE
Silver model
UDT
120V AC, 60Hz
UPP
230-240V AC, 50Hz
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
STANDBY/ ON
OPEN / CLOSE
RANDOM MEMORY REPEAT
ABC
DEF
NAME
1
2
3
GHI
J K L
MNO
SCROLL
4
5
6
PQRS
TUV
W XYZ
CLEAR
7
8
9
DISPLAY ENTER
>10
10
/
0
REC
REC
AMCS
EDIT/NO
YES
RC- 448 C
REMOTE CONTROLLER
(
PUSH TO ENTER
)
DISPLAY
CDR- 205 TX
RC-448C
ON THE
CDR-205TX
Ref. No. 3690
072001

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  • Page 1 COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE...

  • Page 2: Specifications

    CDR-205TX SPECIFICATIONS System Compact disc recorder Recording/playing time Max. 80 min (Approx., when using an 80-min disc) D/A converter Advanced Multi bit Digital filter 8 times oversampling Connections 1 analog output, 1 analog input 2 digital input (optical), 1 digital output (optical)

  • Page 3: Troubleshooting Guide

    CDR-205TX TROUBLESHOOTING GUIDE-1 If the CDR-205TX begins to operate improperly, use the troubleshooting guide below to help you ascertain the problem. Because the unit contains a microcomputer to provide advanced functions, it may malfunction due to external noise or static electricity. If this happens, disconnect the power cord and then plug it in again after about 5 seconds.
  • Page 4 Eject the disc and check whether it meets (without the "FOR CONSUMER" marking) the specifications for use with the or a CD-RW has been inserted. CDR-205TX. Always insert a disc that has the markings "FOR CONSUMER" or "FOR MUSIC USE ONLY" on its surface Check Input Synchronous recording cannot be Record from a recordable source.
  • Page 5 R-805TX is in the energy save mode Press the power (STANDBY/ON) button on the R-805TX (If connected). to power on the CDR-205TX. No sound is The speakers are not properly Connect the speakers. output from connected.

  • Page 6: Service Procedures

    CDR-205TX SERVICE PROCEDURES PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to follow Laser Diode Properties carefully the instructions below when servicing. Material: GaAS/GaAlAs Wavelength: 778∼787 nm WARNING!! Emission Duration: Continuous Laser output: MAX.

  • Page 7: Exploded View

    CDR-205TX EXPLODED VIEW T901 E902 P901 P501 P302 P902 P801...

  • Page 8: Exploded View Parts List

    CDR-205TX EXPLODED VIEW PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION 27111207 Front bracket E902 27190608-1 Clamp, UA-0 V0 838130088 3TTB+8B, Self tapping screw P302 2045091012 NCFC5-091012, Flexible flat cable 27100398 Chassis P501 2045251512 NCFC5-251512, Flexible flat cable...
  • Page 9 CDR-205TX EXPLODED VIEWS OF MECHANISM-1 CD-R MECHANISM: DB-ALD200 From POWER PC board To MAIN PC board CD-R CORE PCB ass'y To MAIN PC board Not supplied Screw Not supplied...

  • Page 10: Parts List

    CDR-205TX EXPLODED VIEWS OF MECHANISM-2 CD-R MECHANISM: DB-ALD200 • Bottom View Refer to "EXPLODED VIEWS OF MECHANISM-3" CD-R CORE PCB ass'y CN101 PARTS LIST REF. NO. PART NO. DESCRIPTION --- * LOAB ass'y Note: PDD1222 32P flexible flat cable The mechanical parts with no part number in the exploded views are not supplied.
  • Page 11 CDR-205TX EXPLODED VIEWS OF MECHANISM-3 CD-R MECHANISM: DB-ALD200 • Bottom View CD-R CORE PCB ass'y CN452 • How to Install the Disc Table Use nippers or other tool to cut the two sections marked A in figure 1 . While supporting the spindle motor shaft with the stopper, put spacer on top of the carriage base, and stick the disc table on top (takes about 9kg pressure).
  • Page 12 CDR-205TX EXPLODED VIEWS OF MECHANISM-4 CD-R MECHANISM: DB-ALD200 LOAB (ASS'Y) PARTS LIST REF. NO. PART NO. DESCRIPTION VNP1762 PC board (LOAB) CN101 S3B-PH-K KR connector, Small type S101 VSK1011 Switch CN101 S101 CD-R CORE PCB ass'y CN451 MECHA PCB (ASS'Y)

  • Page 13: Block Diagram

    CDR-205TX BLOCK DIAGRAM Q110-2/2 P101 MJM2100M AIN R OP AMP CN501 ANALOG INPUT DACCKOUT Q110-1/2 DACLRCK LRCK MJM2100M ANALOG AIN L DACBCK OP AMP OUTPUT Q312 AK4524-VF Q211-2/2 Q211-1/2 CODEC MJM4565M MJM4565M ADCDATA SDTO AOUT L - DACDATA SDTI OP AMP...
  • Page 14 CDR-205TX BLOCK DIAGRAM OF MECHANISM CD-R MECHANISM: DB-ALD200 IC504 IC503 PCX1027 LC324265AT-25 VCO IC D-RAM (25P) CN502 Address Data ADLRCK ADBCK ADDATA DAMCK CD-R CORE PCB ASS'Y IC501 DALRCK PDC069A MAIN DADATA EFM ENCODER IC PC board DABCK CN501 (OP)

  • Page 15: Schematic Diagram

    CDR-205TX SCHEMATIC DIAGRAM Q801 BJ835GNK P27 33 REMOTE SENSOR P26 34 P25 35 Q803 S812 P24 36 PIC-26043TH2 P23 37 P22 38 P21 39 S811 P20 40 S806 P19 41 P18 42 INPUT P17 43 A+5V S810 S805 P16 44...

  • Page 16: Power Supply Pc Board

    CDR-205TX D901 D901,D905-D908 GP104003E or RN1N4003 T901 NPT-1414* R904 D903 1SS352 C903 104Z R905 D904 J930 1SS352 Q904 Q902 L901 MPC2905HF +8.5 +8.5 2SB772-Q A+5V D910 D909 AC230-240V 50Hz P901 J931 AC120V 60Hz AC100V 50/60Hz Q905 MPC2905HF C901,C902 L902 Q903...
  • Page 17 CDR-205TX SCHEMATIC DIAGRAM Q801 BJ835GNK D901 D901,D905-D908 GP104003E or RN1N4003 T901 NPT-1414* R904 D903 1SS352 P27 33 C903 REMOTE SENSOR P26 34 104Z Q803 P25 35 R905 D904 S812 PIC-26043TH2 P24 36 1SS352 J930 P23 37 Q904 Q902 +8.5 +8.5...
  • Page 18 CDR-205TX PC BOARD CONNECTION DIAGRAM DIGITAL ANALOG OPTICAL REMOTE M+10V OUTPUT INPUT2 INPUT1 CONTROL Q110 A+8V P907B A-8V AC IN GNDA3 GNDA2 GNDA1 Q210 Q211 P906B -27V +/-8V +10V -27V/F1,F2 MEPOWER POWER T901 D+5V +5V/+8.2V SUPPLY POWER TRANSFORMER Q312 CODEC...
  • Page 19 CDR-205TX PRINTED CIRCUIT BOARD VIEWS-1 MAIN PC BOARD (NADG-7123) Component side E110 J192 C216 C217 C218 C219 J168 J160 J167 J164 C227 J161 C226 C213 C212 C211 C210 J159 J162 J158 C315 C110 J154 J149 J156 J179 J153 J148 J185...
  • Page 20 CDR-205TX PRINTED CIRCUIT BOARD VIEWS-2 MAIN PC BOARD (NADG-7123) Soldering side R121 R120 C115 C114 D111 D110 Q214 R235 R236 R241 R237 R229 C224 R227 R219 R222 C314 R312 R313 Q311 C220 R230 Q213 R233 C408 D210 R315 C513 R513...
  • Page 21 CDR-205TX PRINTED CIRCUIT BOARD VIEWS-3 DISPLAY PC BOARD (NADIS-7125) Soldering side Component side R811 C810 J810 J811 J812 J813 J814 J815 C807 R805 C806 J816 J817 J818 Q803 R812 R817 J819 R852 J821 J823 R819 R820 J826 R850 R818 J824...
  • Page 22 CDR-205TX PRINTED CIRCUIT BOARD VIEWS-4 POWER SUPPLY PC BOARD (NAPS-7124) Soldering side Component side P906A P907A J928 J915 J927 J922 J921 J920 J919 R417 C918 L410 C419 J918 C418 C420 Q907 J914 C913 C923 C422 R907 C911 C912 C916 R909...

  • Page 23: Printed Circuit Board Parts List

    CDR-205TX PRINTED CIRCUIT BOARD PARTS LIST-1 MAIN CIRCUIT PC BOARD(NADG-7123-1B/-1C) CIRCUIT NO. PART NO. DESCRIPTION CIRCUIT NO. PART NO. DESCRIPTION Ceramic Resonator Q110 22240608R1 NJM2100M X710 3010242 CST5.00MGW Capacitors Q210,Q211 22241383R2 or NJM4565M-D C110,C111 393384707 47uF, 50V, Elect. 22240489R1NE MPC4570G2-T1(MST)
  • Page 24 CDR-205TX PRINTED CIRCUIT BOARD PARTS LIST-2 CIRCUIT NO. PART NO. DESCRIPTION CIRCUIT NO. PART NO. DESCRIPTION Transistors Plug Q902 2201275 or 2SB772-Q or CN902 25055150 NPLG-6P134 2201276 2SB772-P P901A 25055675 or NPLG-2P631 or Q903 221281 or DTC114YS or 25056028 NPLG-2P0978...
  • Page 25 System clock oscillation circuit output pin. (5MHz) CHECK Not used. System clock oscillation circuit input pin. (5MHz) MODE Input pin for model selection. DX-R700="H", CDR-205TX="L" IC(GND) Internal connection pin. Not used. (Connect to Ground pin) Not used. (Connect to Ground pin) Not used. (OPEN) VSS1(GND) Ground pin.
  • Page 26 CDR-205TX DISASSEMBLING PROCEDURES-1 CD-R MECHANISM: REPLACEMENT OF OPTICAL PICKUP The laser diode in the optical pickup block is so sensitive to static electricity, surge current and etc. That the components are liable to be broken down or its reliability remarkably deteriorated.
  • Page 27 CDR-205TX DISASSEMBLING PROCEDURES-2 CD-R MECHANISM: REPLACEMENT OF OPTICAL PICKUP When replacing the optical pickup, short-circuit 1, 3. Press the shaft stopper to the arrow mark direction. two terminals on the optical pickup unit. 2, 4. Pull out the shaft. Front side LD short terminals 1.
  • Page 28 CDR-205TX DISASSEMBLING PROCEDURES-3 CD-R MECHANISM: REPLACEMENT OF SPINDLE MOTOR When replacing the optical pickup, short-circuit Remove the CD-R CORE PCB. two terminals on the optical pickup unit. Front side LD short terminals -- Bottom view -- Disconnect the flexible flat cable and socket ass'y Unsolder the spindle motor and carriage motor.
  • Page 29 CDR-205TX DISASSEMBLING PROCEDURES-4 CD-R MECHANISM: REPLACEMENT OF SPINDLE MOTOR Remove the disc table ass'y. Disc table ass'y -- Top view -- Front side Remove the machine screw of two points holding the spindle motor. Machine screw -- Top view -- Front side Replace the spindle motor.

  • Page 30: Adjustment Procedures

    CDR-205TX ADJUSTMENT PROCEDURES-1 1. DISCS TO BE USED SERVO SYSTEM ADJUSTMENT CD: Test disc TYPE 4 YEDS-18 (by SONY) SN: 0R016 or STD-905 (by PIONEER) SN: 0R116 2. MEASUREMENT EQUIPMENT (1) Laser power meter: LE8010 (by LEADER) (2) Oscilloscope (3) CD jitter meter 3.

  • Page 31: Necessary Adjustment Points

    CDR-205TX ADJUSTMENT PROCEDURES-2 3.2 TEST-POINT CD-R CORE ass'y Rear view 1. EQRF 2. RF 1 2 3 4 5 6 7 8 3. MPXO 4. MPP 5. TE CN102 6. VC 7. ATFM Test-point 8. FE 4. NECESSARY ADJUSTMENT POINTS...

  • Page 32: Ld Power Adjustment

    CDR-205TX ADJUSTMENT PROCEDURES-3 5. LD POWER ADJUSTMENT [Points] 1) LD power adjustment consists of three sessions: Playback power adjustment, CD-R record power adjustment, and CD-RW record power adjustment. 2) Once the test mode is activated in order to perform the LD power adjustment, be sure to finish the three sessions in one time, never to stop halfway;...
  • Page 33 CDR-205TX ADJUSTMENT PROCEDURES-4 5.3 CD-RW Record Power Adjustment Pickup objective lens Test Point RW Bias : 2.3 mW ± 0.05 mW, RW REC : 3.2 mW ± 0.05 mW, RW Erase : 5.2 mW ± 0.1 mW Adjustment Value Purpose Optimizing CD-RW recording power of laser diode.
  • Page 34 CDR-205TX ADJUSTMENT PROCEDURES-5 6. SERVO ADJUSTMENT AUTOMATIC ADJUSTMENT 6.1 Preparation Test Point CN102-pin 3 (MPX) CD test disc (TYPE 4 or STD-905) Discs to be Used Method FL Indication [Procedure] 1. Enter the Test mode. " FEOS_ _XX_ _ _ _ "...

  • Page 35: Servo Adjustment

    CDR-205TX ADJUSTMENT PROCEDURES-6 6. SERVO ADJUSTMENT 6.4 Focus Bias Adjustment Test Point CN102-pin 2 (RF) Adjustment Value Minimize jitter value Optimizing DC offset voltage of focus servo loop circuit including pickup. Purpose Focus-in does not function, sound pauses, bad RF wave shape, or incapable to Symptom when Out of Adjustment playback some discs.
  • Page 36 CDR-205TX ADJUSTMENT PROCEDURES-7 7. Pickup replacement repair, the final check inspection method after adjustment Disc required: CD-R disc Standard disc for consumer (For music use). RDD-74 (PIONEER VIDEO CORP.) CD-RW disc Standard disc for consumer (For music use). RDW-74J (PIONEER VIDEO CORP.) [Inspection items] 1.

  • Page 37: Error Code

    ERROR CODE Error Code Display for Service. The CDR-205TX/DX-R700 can display the error codes for service. 1. While pushing the YES key and FINALIZE key, press the DISPLAY key. 2. Turn the JOG(AMCS) key so that "S. Err Disp?" appears on the FL display.

  • Page 38: General Information

    CDR-205TX GENERAL INFORMATION-2 Error code table for service Code Generation Condition In the tray opening procedure, if opening action is not completed within 4.5 sec., the procedure moves to closing action. Afterwards if this closing action is not completed within 4.5 sec., the procedure recalls opening action again.

  • Page 39: Packing View

    CDR-205TX PACKING VIEW PARTS LIST REF. NO PART NO. DESCRIPTION REF. NO PART NO. DESCRIPTION 24140448 Remote controller, RC-448C 29091978 Pad AS 3010054 Battery, UM-3 29053715 Carton 2050064 or NCS-1P106 29362818 Label EAN 2050072 NOP-1P50, Optical cable 29100037-1A Polybag, 650x500...
  • Page 40 Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN Tel: 072-831-8111 Fax: 072-833-5222 ONKYO U.S.A. CORPORATION 18 Park Way, Upper Saddle River, N.J. 07458, U.S.A. Tel: 201-785-2600 Fax: 201-785-2650 E-mail: onkyo@onkyousa.com ONKYO EUROPE ELECTRONICS GmbH Industriestrasse 20, 82110 Germering, GERMANY Tel: 089-849-320 Fax: 089-849-3265 E-mail: info@onkyo.de...

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