Manuals / Sony / Home Audio / Stereo System

Sony HCD-MD373 service manual CDBASE UNIT BU-5SBD32, 255 256, 253, 258 251, Ver 1.1

Models: HCD-MD373

1 98

Download 98 pages 31.75 Kb

Page 82

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Ver 1.1 2001.06

7-6.CD BASE UNIT (BU-5SBD32)

(BU identification: black plastic turntable with magnet)

255

256

257

253

254

M101 (including rC)

252

254

M102

258

251

The components identified by mark ! or dotted line with mark ! are critical for safety . Replace only with part number specified.

Ref. No.

Part No.

Description

Remark

2514-951-620-01 SCREW (2.6X8), +BVTP

*252 A-4724-375-A BD (CD) BOARD, COMPLETE

2534-917-565-01 SHAFT, SLED

2544-951-940-01 INSULATOR (BU)

!255	8-848-379-31 OPTICAL PICK-UP KSS-213BA/F-NP

Ref. No.

Part No.

Description

Remark

2561-769-069-11 WIRE (FLAT TYPE) (16 CORE)

2574-917-567-01 GEAR (M)

2584-917-564-01 GEAR (P), FLATNESS

M101	X-4952-989-1	BASE (OUTSART) ASSY (SPINDLE)
M102	A-4917-504-1	MOTOR ASSY (SLED)

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Sony HCD-MD373 service manual CDBASE UNIT BU-5SBD32, 255 256, 253, 258 251, Ver 1.1

Contents

9-928-998-12 SPECIFICATIONSSony Corporation SERVICE MANUALSELF-DIAGNOSISFUNCTION Table of Error Codes ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTSSelecting the Test Mode Flexible Circuit Board Repairing Notes on chip component replacementMODEL IDENTIFICATION - BACK PANEL 6. DIAGRAMS TABLE OF CONTENTS3. DISASSEMBLY Ver 1.1SECTION SERVICING NOTE DRAWING OUT THE TRAY DURING POWER OFFCLEANING THE OPTICAL PICKUP CD PLAYER REMOVING THE INDICATION PLATE FLSERVICE POSITION THE POWER BOARD SERVICE POSITION THE MD MECHANISMSERVICE POSITION THE CD MECHANISM Power boardProcedure Cold ResetProcedure 1: recommended Hot ResetError History Display Mode When errors occurWhen no errors occur Aging Mode• Reading the Mechanism Error History Display •Reading the BD Error History DisplayJIG FOR CHECKING BD MD BOARD WAVEFORM Record Precedure Display PrecedureMAIN BOARD Component Side CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTSFORCED RESET ProcedureReading the Display RETRY CAUSE DISPLAY MODEPrecedure ExampleReading the Display Hexadecimal nBinary Conversion TableLOCATION OF PARTS AND CONTROLS SECTION GENERALFront Panel Page Page SECTION DISASSEMBLY 3-1.CASE3-2.FRONT PANEL 3-3.BACK PANEL3-4.MAIN BOARD AND POWER TRANSFORMER 3-5.CD MECHANISM DECK3-7.CD BASE UNIT 3-6.TRAY, GEAR AND CAM3-8.OPTICAL PICK-UPSECTION OF CD KSS-213BA/F-NP 3-10.MD MECHANISM DECK • Note for installation of Slider CAM 3-14.OPTICAL PICK-UPOF MD KMS-260B/J1N 3-13.OVER WRITE HEAD3-15.SPINDLE MOTOR M901 AND SLED MOTOR M902 MD Procedure 1: Press the 4-1.PRECAUTIONS FOR USE OF TEST MODE4-2.SETTING THE TEST MODE Procedure 2: Press the4-5.SELECTING THE TEST MODE 4-5-1.Operating the Continuous Playback Mode 4-5-3. Non-VolatileMemory Mode EEP MODE4-7.TEST MODE DISPLAYS 2. Error rate display4-6.FUNCTIONS OF OTHER BUTTONS 1. Mode displayWhen Lit MEANINGS OF OTHER DISPLAYSContents When OffSECTION ELECTRICAL ADJUSTMENTS MD SECTION 5-1.PARTS REPLACEMENT AND ADJUSTMENT5-5.CREATING CONTINUOUSLY RECORDED DISC 5-4.PRECAUTIONS FOR ADJUSTMENTSOptical pick-upflexible board Connection Checking Procedure Checking Procedure5-6-2.Laser Power Check 5-6.CHECKS PRIOR TO REPAIRS5-6-4.Focus Bias Check 5-6-5.C PLAY Checking MO Error Rate CheckCD Error Rate Check 5-6-6. Self-Recording/playbackCheckSetting Procedure 5-7.INITIAL SETTING OF ADJUSTMENT VALUE5-10.LASER POWER ADJUSTMENT Recording ProcedureSpecified Value 5-11.TRAVERSE ADJUSTMENTAdjusting Procedure Connection5-12.FOCUS BIAS ADJUSTMENT Adjusting Procedure5-13-1.CD Error Rate Check 5-13.ERROR RATE CHECK5-15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 5-13-2.MO Error Rate CheckBD MD BOARD SIDE A 5-15.ADJUSTING POINTS AND CONNECTING POINTSCD SECTION BD MD BOARD SIDE B6-1.CIRCUIT BOARDS LOCATION HCD-MD373 SECTION DIAGRAMS4040 TUNER UNIT is supplied as the assembled blockHCD-MD373 6-2.BLOCK DIAGRAMS – BD CD SECTION –•SIGNAL PATH CD PageR-chis omitted 4242– BD MD SECTION 1/2 – Siganl pathHCD-MD373 – BD MD SECTION 2/2 –Page PageHCD-MD373 4444– MAIN SECTION – PageWAVEFORMS – BD CD SECTION – For schematic diagramsFor printed wiring boards – BD MD 1/2 SECTION –HCD-MD373 6-3.PRINTED WIRING BOARD – BD CD SECTION –• See page 40 for Circuit Boards Location PageSee page 45 for Waveforms 6-4.SCHEMATIC DIAGRAM – BD CD SECTION –•See page 67 for IC Block Diagrams •See page 69 for IC Pin FunctionsHCD-MD373 6-5.PRINTED WIRING BOARD - BD MD SECTION•Semiconductor Location Page•See page 71 for IC Pin Functions 6-6.SCHEMATIC DIAGRAM – BD MD SECTION 1/2 –•See page 65 for IC Block Diagrams HCD-MD373•See page 66 for IC Block Diagrams 6-7.SCHEMATIC DIAGRAM - BD MD SECTION 2/2•See page 48 for Printed Wiring Board HCD-MD373Page 6-8.SCHEMATIC DIAGRAM - SP SECTION6-9.PRINTED WIRING BOARD – SP SECTION – PageHCD-MD373 6-10.PRINTED WIRING BOARD – MAIN SECTION –•See page 40 for Circuit Boards Location PageHCD-MD373 6-11.SCHEMATIC DIAGRAM – MAIN SECTION 1/3 –• See page 68 for IC Block Diagrams Page•See page 68 for IC Block Diagrams 6-12.SCHEMATIC DIAGRAM – MAIN SECTION 2/3 –•See page 52 for Printed Wiring Board HCD-MD373See page 75 for IC Pin Functions 6-13.SCHEMATIC DIAGRAM - MAIN SECTION 3/3Page Page See page 52 for Printed Wiring BoardHCD-MD373 6-14.SCHEMATIC DIAGRAM – MD DIGITAL SECTION –•See page 67 for IC Block Diagrams PageHCD-MD373 6-15.PRINTED WIRING BOARD – MD DIGITAL SECTION –Page Page Page Page • See page 40 for Circuit Boards LocationPage 6-16.SCHEMATIC DIAGRAM – AMP SECTION –HCD-MD373 PagePage Page 6-17.PRINTED WIRING BOARD – AMP SECTION –HCD-MD373 See page 40 for Circuit Boards LocationHCD-MD373 6-18.SCHEMATIC DIAGRAM - PANEL SECTIONPage HCD-MD373 6-19.PRINTED WIRING BOARD – PANEL SECTION –• Semiconductor Location PageHCD-MD373 6-20.SCHEMATIC DIAGRAM – POWER SECTION –Page Page Page 6-21.PRINTED WIRING BOARD – POWER SECTION –HCD-MD373 Page6-24.SCHEMATIC DIAGRAM – LOADING SECTION – 6-22.SCHEMATIC DIAGRAM – BD SWITCH SECTION –6-23.PRINTED WIRING BOARD – BD SWITCH SECTION – 6-25.PRINTED WIRING BOARD – LOADING SECTION –• BD MD Board 1/2 6-26.IC BLOCK DIAGRAMSIC101 CXA2523AR • BD MD Board 2/2 IC152 BH6511FS-E2IC121 CXD2654R C103 CXA2568M-T6 • BD CD BoardIC101 CXD2587Q • MD DIGITAL Board• MAIN Board 1/3 MAIN Board 3/3IC171 LB1641 IC302 MC14052B6-27.IC PIN FUNCTIONS Tracking error signal input • IC101 RF Amplifier CXA2523AR BDMD board MNT0 FOK Data input/output for DRAM TFDR IC501 MASTER CONTROL M30620ECFP-A21MAIN board STEREO SECTION EXPLODED VIEWS 7-1.CASE AND FRONT PANEL SECTION 11 2059 #3 7-2.CHASSIS SECTION 5261 54 120 122 123 7-3.MD MECHANISM DECK MDM-5A 113 110 107124 113 111112 117 118 114 103 102 101162 161 7-4.MD BASE UNIT MBU-5A 152 164163 170166 157 152 152214 215 217 7-5.CD MECHANISM DECK CDM55A-5SBD32201 204 203 Ver253 7-6.CDBASE UNIT BU-5SBD32255 256 258 251314 314 7-7.CD MECHANISM DECK CDM55C-5BD32315 317 Ver 1.1355 356 7-8.CDBASE UNIT BU-5BD32BU identification metal turntable without magnet 353 354SECTION ELECTRICAL PARTS LIST BD CD BD MD BD CDMD DIGITAL BD MDMD DIGITAL LOADING MAIN MAIN MAIN Ref. NoMAIN Part NoPANEL POWER PANELPOWER Ver HCD-MD373Ref. No MEMO HCD-MD3731999.08 HCD-MD373 REVISION HISTORYBU-5BD32 Date