User's Manual

ManualsBrandsSony ManualsCar Stereo SystemSony Mini Disc Changer MDX-65

– 1 –

MICROFILM

Model Name Using Similar Mechanism MDX-62

Mini Disc Mechanism Type MG-798K-133

Optical Pick-up Name KMS-241A/J2N

SERVICE MANUAL

US Model

Canadian Model

AEP Model

UK Model

E Model

MDX-65

MINIDISC CHANGER

System Mini disc digital audio system

Laser Diode Properties

Material: GaAlAs

Wavelength: 780 nm

Emission Duration: Continuous

Laser output Power: Less than

44.6 µW*

* This output is the value measured at a distance of

200 mm from the objective lens surface on the

Optical Pick-up Block.

Frequency response

10 – 20,000 Hz

Wow and flutter Below measurable limit

Signal-to-noise ratio

95 dB

Outputs Bus control output (8 PIN)

Analog audio output (RCA PIN)

Current drain 300 mA (MD playback)

600 mA (during loading or ejecting a

disc)

Dimensions Approx. 176 × 83.5 × 142 mm

(7 × 3

× 5

in.) (w/h/d) not incl.

projecting parts and controls

Mass Approx. 1.1 kg (2 lb. 7 oz.)

Power requirement

12 V DC car battery (negative

ground)

Supplied accessories

Mounting hardware (1 set)

Bus cable 5.5 m (1)

RCA pin cord 5.5 m (1)

• U.S. and foreign patents licensed from Dolby

Laboratories Licensing Corporation.

• Design and specifications subject to change without

notice.

SPECIFICATIONS

• Sony BUS system compatible with mobile MD

changers.

• Direct-in system for inserting and removing

MDs easily.

• No waiting time to change discs in continuous

play.

• The MD changer compartment has a built in light

for easy use even in the dark.

• 1 bit Digital/Analog converter for high quality

sound reproduction.

FEATURES

Dolby noise reduction extension manufactured under license

from Dolby Laboratories Licensing Corporation.

“DOLBY” and the double-D symbol a are trademarks of Dolby

Laboratories Licensing Corporation.

Summary of content (38 pages)

PAGE 1
MDX-65 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model Dolby noise reduction extension manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. SPECIFICATIONS System Mini disc digital audio system Laser Diode Properties Material: GaAlAs Wavelength: 780 nm Emission Duration: Continuous Laser output Power: Less than 44.
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SERVICE NOTE TABLE OF CONTENTS 1. SERVICE NOTE CAUTION 1-1. To Place the Set into Playback Mode ................................. 3 1-2. How to Check the Servo Board Waveforms ...................... 3 Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. 2. GENERAL Notes on Chip Component Replacement • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be damaged by heat.
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SECTION 1 SERVICE NOTE 1-1. TO PLACE THE SET INTO PLAYBACK MODE The this set has no key control function and cannot be placed into the Playback mode alone. For key control, the this set is controlled through serial communication with a master unit (car audio player, TV tuner or source selector compatible with the Sony BUS system.) To service the this set, the set should be connected as given below: Master unit (CDX-C880, C880R, etc.) MDX-65 BUS CONTROL OUT BUS CONTROL IN 1-2.
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SECTION 2 GENERAL –4– This section extracted from US, Canadian, E model’s instruction manual.
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–5–
PAGE 6
SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. PANEL (REAR) ASSY 4 BVTT 2.6x6 6 panel (rear) assy 3 BVTT 2.6x6 2 PTT 2.6x8 5 CN901 1 cover 3-2. CASE (UPPER) 3 case (upper) 1 BVTT 2.6x6 2 BVTT 2.
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3-3. PANEL (FRONT) ASSY 3 panel (front) assy 1 claw 2 claw 4 CN620 3-4.
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3-5. MAIN BOARD 3 escutcheon 6 chassis (front) 0 CN600 7 collar (EHS) !¢ CN701 !¡ CN601 !™ CN500 5 lead stopper 2 screws (M1.7) 1 cushion 4 screws (M1.7) !∞ CN700 9 CN602 !¶ special flat screws (1.7x3) !• MAIN board !£ CN603 8 sheet (MAIN PC board) !§ cushion (MAIN) 3-6. CHASSIS (OP) BLOCK 9 worm wheel (ELV2) 7 bearing (ELV) 8 bearing (ELV) 6 chassis (OP) block 5 bearing (ELV) 4 bearing (ELV) 3 chassis (bottom) assy 2 precision screws (P 1.7x1.8) 1 precision screws (P 1.7x1.
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3-7. SERVO BOARD 3 screws (M1.7x2.2) 6 CN100 5 CN300 7 SERVO board 1 CN200 4 CN400 2 Unsolder the motor lead wires. 3-8. OPTICAL PICK-UP 1 screws (K1.7x3.
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3-9. NOTE ON ASSEMBLY FOR THE CHASSIS (OP) BLOCK 1 worm wheel (ELV2) 3 bearing (ELV) 4 bearing (ELV) 5 chassis (OP) block 2 Turn the three feed screw (ELV) assy fully in the direction of arrows A. A A 8 chassis (bottom) assy A 6 bearing (ELV) 7 bearing (ELV) 9 precision screw (P1.7x1.8) B B 0 precision screws (P1.7x1.8) B !™ gear (ELVA2) !¢ gear (ELVC) !∞ polyethylene washer !£ polyethylene washer !¡Turn the three gear (ELVB) fully in the direction of arrows B.
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SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTIONS • IC100 CXA2523AR (RF AMP) Pin No. Pin Name 1 I I/O I Pin Description I-V converted RF signal input (I) from detector of optical pick-up. 2 3 J VC I O I-V converted RF signal input (J) from detector of optical pick-up. Center voltage (+1.65 V) generation output 4–9 10 A–F PD I I Signal input (A to F) from detector of optical pick-up. Quantity monitor input of light from laser diode of optical pick-up.
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• IC600 µPD784216GC-027-8EU (SYSTEM CONTROLLER) Pin No.
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Pin No. 63 Pin Name — I/O O Pin Description 64 65 EE CS EE CKO O O 66 67 EE SIO SENS I/O I 68 69 LIMIT SW DOORSW I I Optical pick-up innermost track limit position detection switch (S400) input Front door open detection switch (S620) input (“L” : Open complete) 70 71 MD LAT MD RST O O Serial latch signal output to CXA2523AR (IC100) and CXD2652AR (IC200). Reset signal output to CXD2652AR (IC200).
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4-2.
PAGE 15
MDX-65 4-3.
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MDX-65 4-4. PRINTED WIRING BOARDS — SERVO SECTION — THIS NOTE IS COMMON FOR PRINDED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) for schematic diagrams • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. • % : indicates tolerance. • C : panel designation.
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MDX-65 • Semiconductor Location Ref. No.
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MDX-65 (Page 23) 4-5. SCHEMATIC DIAGRAM — SERVO SECTION — • Refer to page 33 for Waveforms and page 35 for IC Block Diagrams.
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MDX-65 (Page 32) (Page 22) 4-6. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 34 for Waveforms and page 37 for IC Block Diagrams.
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MDX-65 4-7. PRINTED WIRING BOARDS — MAIN SECTION — • Semiconductor Location ( – 25 – – 26 – Ref. No.
PAGE 21
MDX-65 (Page 30) (Page 20) – 27 – – 28 –
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MDX-65 4-8. PRINTED WIRING BOARD — POWER BOARD — • Semiconductor Location ( Ref. No.
PAGE 23
MDX-65 4-9. SCHEMATIC DIAGRAM — POWER SECTION — • Refer to page 37 for IC Block Diagrams.
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• Waveforms – Main Section – – Servo Section – 5 IC100 #• (RF) PLAY MODE 500 mV/DIV, 1 µsec/DIV 1 IC100 4 (A) PLAY MODE 200 mV/DIV, 10 µsec/DIV 9 IC200 @§ (XBCK) 354 ns 2 IC100 8 (E) PLAY MODE 100 mV/DIV, 10 µsec/DIV 6 IC100 #¢, IC200 ^∞ (FE) PLAY MODE 200 mV/DIV, 0.5 msec/DIV Approx. 150 mVp-p 7 IC100 @§, IC200 &¢ (TE) PLAY MODE 500 mV/DIV, 0.5 msec/DIV 89 ns 2 IC600 !¢ (XT1) 2.6 Vp-p 2.8 Vp-p 400 mVp-p 3.2 Vp-p 2.7 Vp-p 71 ns !º IC200 !§ (OSCI) 44.
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• IC Block Diagrams – Servo Section – – + RF AGC RF PEAK 44 43 42 41 40 39 38 37 USROP RF AGC + – EQ USRC DET + – RFA1 AGCI 45 COMPO OPN 46 COMPP RFO 47 ADDC MORFI 48 OPO MORFO IC100 CXA2523AR EQ BPF3T RFA2 I J 1 –1 – –2 – 2 RFA3 HLPT –1 A 3 IVR WBL TEMP PEAK –2 BOTTOM PBSW GRVA WBL 35 ABCD 34 FE – – – – AA 36 BOTM PBH –1 GRV + – 4 3T PTGR – 1 – –2 – + VC P-P –2 OFST CVB AUX SW PEAK3T 3T 33 AUX BPFC ABCDA 32 ADFG B + – 5 IVR C 31 ADA
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MNT1 2 MONITOR CONTROL MNT2 3 DCHG APC ADFG F0CNT XLRF CKRF DTRF APCREF LDDR TRDR TFDR DVDD FFDR 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 PWM GENERATOR SPINDLE SERVO MNT0 1 FRDR FS4 SRDR SFDR SPRD 94 93 AUTO SEQUENCER 100 99 98 97 96 95 SPFD FGIN TEST1 TEST2 TEST3 DVSS EFMO IC200 CXD2652AR EACH BLOCK 75 AUX2 74 TE 73 SE 72 AVSS MNT3 4 71 ADRB ADIP DECODER 70 ADRT 69 AVDD SWDT 5 68 ADIO SCLK 6 EACH BLOCK CPU I/F XLAT 7 SRDT 8 67 VC SERVO DSP SENS 9 A/
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– Main Section – IC500 PCM1718E-T1 20 XTO 19 CLKO CLK CONTROL VDD 3 INPUT INTERFACE LRCIN 4 18 17 16 15 14 MODE CONTROL DIN 5 DIGITAL FILTER MUTE DM1 DM0 RSTB FORMAT BCKIN 6 VCC 3 9 OUT1 8 VS 7 OUT2 GND 5 5 LEVEL DAC 5 LEVEL DAC LOWPASS FILTER LOWPASS FILTER CMOS AMP CMOS AMP D/C R 8 IN1 2 IN2 4 NOISE SHAPER ZERO 7 10 N.C. GND 1 CONTROL LOGIC XTI 1 DGND 2 IC700, 701 LB1638MTP-T1 6 N.C.
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SECTION 5 EXPLODED VIEWS NOTE: • The mechanical parts with no reference number in the exploded views are not supplied. • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. • -XX and -X mean standardized parts, so they may have some difference from the original one. • Color Indication of Appearance Parts Example : KNOB, BALANCE (WHITE) ... (RED) N N The components identified by mark !or dotted line with mark.
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5-2. MAIN BOARD SECTION 58 59 56 57 54 56 55 56 57 MG-798K-133 63 53 60 56 61 52 51 62 64 Ref. No. Part No. Description Ref. No. Part No. Description * 51 * 52 * 52 53 54 3-931-149-02 A-3294-565-A A-3294-667-A 1-776-474-11 3-909-412-01 SHEET(MAINPCBOARD) MAINBOARD,COMPLETE(US,Canadian,E) MAINBO ARD ,COMPLETE(AEP ,UK) CABLE, FLA T7P SCREW (+P) (1.
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5-3. MD SECTION (1) (MG-798K-133) 102 103 104 101 106 109 105 101 109 101 118 #4 113 112 108 107 S903 S902 109 #4 109 #2 110 114 111 #2 117 M903 #2 #2 116 #3 M904 Ref. No. Part No. Description 101 102 103 * 104 105 3-317-552-71 3-930-314-01 3-930-319-01 3-930-320-01 3-931-366-01 106 * 107 108 109 110 111 115 112 #2 Remark 112 Ref. No. Part No. Description SCREW (M1.
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5-4. MD SECTION (2) (MG-798K-133) #2 151 152 160 164 153 154 155 165 156 157 166 163 167 158 159 161 168 162 160 169 170 162 Ref. No. Part No. Description Part No. Description * 151 * 152 153 154 155 X-3371-209-3 3-020-388-01 3-930-318-01 3-930-318-11 3-930-318-21 CHASSIS(TOP)ASSY GUIDE(HOLDER2) BUTTON (EJECT) ( 61) BUTTON (EJECT) ( 62) BUTTON (EJECT) ( 63) Remark Ref. No.
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5-5. MD SECTION (3) (MG-798K-133) #6 #6 209 #6 210 207 207 226 206 206 208 205 205 211 212 203 213 RV901 #6 225 #2 M902 S901 204 M901 203 214 215 #4 224 220 217 218 #6 219 216 #7 201 #5 202 222 221 #5 201 223 The components identified by mark !or dotted line with mark. !are critical for safety. Replace only with part number specified. Ref. No. Remark Les composants identifiés par une marque !sont critiques pour la sécurité.
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SECTION 6 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. • -XX and -X mean standardized parts, so they may have some difference from the original one. • RESISTORS All resistors are in ohms. METAL:Metal-film resistor. METAL OXIDE: Metal oxide-film resistor. F:nonflammable • Abbreviation G : German model Ref. No. Part No.
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MAIN Ref. No. IC700 IC701 POWER Part No. Description 8-759-823-87 8-759-823-87 IC LB1638M IC LB1638M Remark Ref. No. 1-216-821-11 MET ALCHIP Description Remark JC501 Part No. 1K 5% 1/16W RB601 RB602 RB603 RB605 RB606 1-233-412-11 1-233-810-21 1-233-412-11 1-233-412-11 1-233-810-21 RES,CHIPNETWORK 1.0K RES,CHIPNETWORK 100K RES,CHIPNETWORK 1.0K RES,CHIPNETWORK 1.
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POWER Ref. No. Part No. Description C973 C974 C975 C976 C977 1-164-004-11 1-164-004-11 1-126-204-11 1-128-590-11 1-128-590-11 CERAMICCHIP CERAMICCHIP ELECTCHIP ELECTCHIP ELECTCHIP 0.1uF 0.1uF 47uF 100uF 100uF 10% 10% 20% 20% 20% Remark 25V 25V 16V 6.3V 6.3V C978 C980 C981 C983 C984 1-128-590-11 1-128-590-11 1-127-485-00 1-164-004-11 1-164-004-11 ELECTCHIP ELECTCHIP ELECT CERAMICCHIP CERAMICCHIP 100uF 100uF 33uF 0.1uF 0.1uF 20% 20% 20% 10% 10% 6.3V 6.3V 6.
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SENSOR Ref. No. SERVO Part No. Description Remark SENSORBOARD,COMPLETE ************************ WhenreplacinganypartsintheSENSORboard, thewholemountedboardshouldbereplaced. ************************************************************* Ref. No. Part No.
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SERVO Ref. No. R215 R216 R217 Part No. Description 1-216-825-11 1-216-825-11 1-216-825-11 MET ALCHIP MET ALCHIP MET ALCHIP Remark 2.2K 2.2K 2.2K 5% 5% 5% 1-233-576-11 1-233-600-11 1-233-600-11 RES,CHIPNETWORK 100 RES,CHIPNETWORK 2.2 RES,CHIPNETWORK 2.2 1-692-532-21 7-685-793-09 7-627-554-07 7-627-852-37 7-627-855-07 7-627-852-27 SWITCH, PUSH (1 KEY) (LIMIT) X200 1-767-429-21 VIBRA TOR, CR YST AL(22.
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MDX-65 Sony Corporation 9-926-423-11 Personal & Mobile Communication Company – 48 – 99A0478-1 Printed in Japan C1999. 1 Published by Quality Assurance Dept.