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MDX-61
US Model
SERVICE MANUAL
Canadian Model
Ver 1.1 2001.08 AEP Model
UK Model
E Model
This set is automatic electrical adjustment.
Model Name Using Similar Mechanism MDX-60
Base Mechanism Type MG-798-133
Optical Pick-Up Name KMS-193C/J2N
SPECIFICATIONS
System Mini disc digital audio system Current drain
Laser Diode Properties 300 mA (MD playback)
Material: GaAlAs 600 mA (during loading or ejecting a disc)
Wavelength: 780nm Dimensions Approx. 176×83.5×125 mm
3
/8×5 in.) (w/h/d)
Emission Durat
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TABLE OF CONTENTS SERVICING NOTE [To place this set in the play mode] 1. GENERAL ..................................................................... 3 This set does not have the key control function, and therefore it cannot activate the play mode by itself. 2. DISASSEMBLY............................................................ 7 Also, the key control to this set is done through a serial communication with the master unit (SONY Bus 3. DIAGRAMS System compatible car audio, TV tuner, source
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SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –
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SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. FRONT PANEL ASS’Y, CASE (UPPER) 5 case (upper) 1 two screws (B2.6 × 6) 1 two screws (B2.6 × 6) 2 claw 3 front panel ass’y 2 claw 4 connector (CN620) 1 two screws (B2.6 × 8) REAR PANEL ASS’Y, MD SECTION 2 rear panel ass’y 6 two springs 4 two dampers 7 3 flexible board (CN800) 4 two dampers 6 two springs 5 two springs – 7 –
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CHASSIS (GEAR) ASS’Y, MAIN BOARD 1 three screws (P1.7 × 1.8) 2 chassis (gear) ass’y 3 special flat screw (1.7 × 3) 4 flexible board (CN500) 5 connector (CN602) 3 two special flat screws (1.7 × 3) 6 flexible board (CN610) 7 three connectors (CN603, 700, 701) 8 MAIN board CHASSIS (BASE) ASS’Y, CHASSIS (OP) ASS’Y 3 worm wheel (LD) 5 Pull up the chassis (OP) ass’y in the arrow A direction. 1 four screws (P1.7 × 1.8) A 1 screw (P1.7 × 1.8) 1 screw (P1.7 × 1.8) 2 feed screw (ELV) ass’y 4 chas
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SERVO BOARD 2 three special head screws (M1.7 × 2) 3 flexible board (CN100) 5 connector (CN301) 6 servo board 1 flexible board (CN200) 4 flexible board (CN400) OPTICAL PICK-UP (KMS-193C/J2N) 1 two screw (K1.7 × 3.5) 2 optical pick-up (KMS-193C/J2N) – 9 –
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SECTION 3 DIAGRAMS • Circuit Boards Location SW board POWER board MAIN board SERVO board LAMP board – 10 –
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MDX-61 3-1. BLOCK DIAGRAM OPTICAL PICK-UP BLOCK (KMS-193C/J2N) IC100 IC600 IC900 IC601 DETECTOR RF AMP SYSTEM CONTROLLER BUS INTERFACE CNP1 RESET (BUS CONTROL CONNECTOR) RESET 12 7 F XRST 17 XRST XRST 59 MD-RST 8 7 F RST 30 SW 2 4 18 SWDT XLAT 58 MD-LAT C SWDT 1 2 3 10 3 B SCLK 19 SCLK SWDT 45 MD-SO 48 11 4 UNICKI IC500 8 7 SCLK XLAT 20 XLAT 51 MD-CKO SHOCK PROOF MEMORY CONTROLLER IC200 C B 9 48 ATRAC ENCODER/DECODER J 44 DIGITAL SIGNAL PROCESSOR 4 5 6 I J RFO UNISO 50 9 6 IC602 D A DIGITAL SER
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• IC Block Diagrams – MAIN section – – SERVO section – IC200 CXD2535CR-1 IC501 HM51W4400TT6-8 1 GND 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 D1 26 CLOCK OSC 50 D2 2 25 D4 DVSS XWE 3 24 D3 DIN PLL 49 DIPO 34 MHz (22 MHz) SE 76 XRAS 4 XCAS ANALOG MUX 23 COMP 48 TEST2 PLL TE 77 NC 5 22 XOE 47 MVC1 OP AMP ECC A0–A9 COLUMN DECODER TENV 78 A/D ENCODER/ NC 6 21 NC 46 RAOF DECODER CONVERTER MID 79 NC 7 20 NC REGISTER SENSE REFRESH AMP EFM APC 80 A9 NC 8 19 MODULATOR INP
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3-8. IC PIN FUNCTION DESCRIPTION SERVO BOARD IC100 CXA1981AR (RF AMP) Pin No. Pin Name I/O Function 1 VC O Output terminal for the center point voltage (1/2 VCC) generated 2-7 A-F I Signal input from detector circuit in the optical pick-up block 8 FI I Signal input of the operational amplifier for F signal 9 FO O Signal output of the operational amplifier for F signal 10 PD I Front monitor Connected to the photo diode 11 APCREF I Input terminal for the setting of laser power 12 TEMPI
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SERVO BOARD IC200 CDX2535CR-1 (DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER) Pin No. Pin Name I/O Function 1 FS256 O 11.2896MHz clock signal output (MCLK system) Not used this set (OPEN) 2 FOK O Focus OK signal output to the system controller (IC600) “H” is output when the focus is applied 3 DFCT O Defect ON/OFF selection signal output to CXD2536CR (IC500) 4 SHCK O Track jump detection signal output to the system controller Not used this set (OPEN
