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Sony HCD-MD373 service manual Page, Block Diagrams – Bd Cd Section, •Signal Path Cd

Models: HCD-MD373

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Page 41

HCD-MD373

HCD-MD373

6-2. BLOCK DIAGRAMS

– BD (CD) SECTION –

OPTICAL PICK-UP BLOCK

(KSS-213BA/NP)

DETECTOR

IC103

E

VCC

RF AMP

A

VC

A

5

RF

A

C

C

7

C

RF EQ

RF

B

D

D

8

D

SUMMING

AMP

16

AMP

B

6

B

F

FOCUS

FF

ERROR

14

AMP

E

11

E

TRACKING

TE

F

10

F

ERROR

13

AMP

LD

LD

DRIVE

3

VC

12

Q101

BUFFER

VC

4

PD

APCLD/PD

LDON 22

AMP

FD

LASER

DIODE

VREF

PD

HOLD SW

REF

21

15

LD

IC102

POWER

FOCUS/TRACKING COIL DRIVE

SPINDLE/SLED MOTOR DRIVE

TRACKING

T+

11 CH2OUTR

TFDR

COIL

T–

12 CH2OUTF

CH2FIN

5

TRDR

CH2RIN

6

FOCUS

F+

14 CH1OUTF

FFDR

COIL

F–

13 CH1OUTR

CH1FIN

2

FRDR

CH1RIN

3

M102

SD+

17 CH3OUTF

SLED

M

CH3RIN

23

SRDR

MOTOR

SD–

18 CH3OUTR

SFDR

CH3FIN

24

M101

SP+

15 CH4OUTF

SPINDLE

M

CH4SIN 25

MOTOR

SP–

16 CH4OUTR

CH4BIN

27

VC

MUTE 20

•SIGNAL PATH

: CD

09	: CD (Digital out)

IC101

DIGITAL SERVO

DIGITAL SIGNAL PROCESSOR

51

RF AC

INTEG-

49

ASY1

RATOR

ASYMMETRY

DIGITAL

48

ASY0

CORRECTION

PLL

VC	VC
VC	38
	CE
	42
	RFDC
	43	OPERATIONAL
	FE	OPERATIONAL	A/D
	39	AMPLIFIER	A/D
	TE	AMPLIFIER	CONVERTER
	41	ANALOG	CONVERTER
INTEG-	SE	SWITCH
INTEG-	SE
RATOR	40
RATOR
	CE
	42
		PWM	SERVO DSP
		GENERATOR	SERVO DSP
	TFDR	TRACKING	TRACKING
	30	PWM	TRACKING
	TRDR	PWM	SERVO
	31	GENERATOR	SERVO
		GENERATOR
	FFDR	FOCUS	FOCUS
	32	PWM	FOCUS
	FRDR	PWM	SERVO
	33	GENERATOR	SERVO
		GENERATOR
	SRDR	SLED	SLED
	29	PWM	SLED
	SFDR	PWM	SERVO
	28	GENERATOR	SERVO
		GENERATOR
	MDP	DIGITAL
	26	CLV
		CLV

16K

RAM

EFM

DEMODULATION

DATA BUS

SUBCODE

PROCESSOR

SERIAL IN

INTERFACE

OVER SAMPLING DIGITAL FILTER

3rd ORDER

NOISE SHAPER

PWM PWM

		XTA1
	TIMING	66	X101
	TIMING		X101
ERROR	LOGIC	STAO	16.9344MHz
CORRECTOR		67
CORRECTOR
D/A	DIGITAL	D OUT	DOUT
INTERFACE	OUT	60	DOUT
INTERFACE	OUT

	XRST	3	59	XRST
	SQSO	1	32	SQSO
	SQCK	1		SQSO
	SQCK	2
		2
CPU	SENS	8	56	SENS
CPU		8		SENS
INTERFACE	DATA		81
SERVO	DATA	5	81	DATA
AUTO	XLAT	5	58	DATA
AUTO	XLAT	6	58	XLT
SEQUENCER		6		XLT
SEQUENCER	CLOK		82
	CLOK	7	82	CLOK
		7		CLOK
	SCOR	14	19	SCOR	C
	XLON	20		SCOR
	XLON
					MAIN
					SECTION

(Page 44)

SERVO	SCLK	33	SQCK
SERVO	9		SQCK
INTERFACE	SSTP		+5V
INTERFACE	27	S101	+5V
		S101
	RMUT	LIMIT SW
	79

LMUT

80

LMUT

70

AIN1

71

LOUT1CD-L 72

(L-OUT)

LOUT2		R OUT
77	57	R OUT
	57	HOLD
AIN2		HOLD
AIN2
76
LOUT2
75

41 41

Image 41

Sony HCD-MD373 service manual Page, Block Diagrams – Bd Cd Section, •Signal Path Cd

Contents

Sony Corporation SPECIFICATIONS9-928-998-12 SERVICE MANUALSELF-DIAGNOSISFUNCTION Selecting the Test Mode ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTSTable of Error Codes MODEL IDENTIFICATION - BACK PANEL Notes on chip component replacementFlexible Circuit Board Repairing 3. DISASSEMBLY TABLE OF CONTENTS6. DIAGRAMS Ver 1.1CLEANING THE OPTICAL PICKUP CD PLAYER DRAWING OUT THE TRAY DURING POWER OFFSECTION SERVICING NOTE REMOVING THE INDICATION PLATE FLSERVICE POSITION THE CD MECHANISM SERVICE POSITION THE MD MECHANISMSERVICE POSITION THE POWER BOARD Power boardProcedure 1: recommended Cold ResetProcedure Hot ResetWhen no errors occur When errors occurError History Display Mode Aging Mode•Reading the BD Error History Display • Reading the Mechanism Error History DisplayJIG FOR CHECKING BD MD BOARD WAVEFORM Display Precedure Record PrecedureFORCED RESET CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTSMAIN BOARD Component Side ProcedurePrecedure RETRY CAUSE DISPLAY MODEReading the Display ExampleHexadecimal nBinary Conversion Table Reading the DisplayFront Panel SECTION GENERALLOCATION OF PARTS AND CONTROLS Page Page 3-1.CASE SECTION DISASSEMBLY3-3.BACK PANEL 3-2.FRONT PANEL3-5.CD MECHANISM DECK 3-4.MAIN BOARD AND POWER TRANSFORMER3-8.OPTICAL PICK-UPSECTION OF CD KSS-213BA/F-NP 3-6.TRAY, GEAR AND CAM3-7.CD BASE UNIT 3-10.MD MECHANISM DECK • Note for installation of Slider CAM 3-15.SPINDLE MOTOR M901 AND SLED MOTOR M902 MD 3-13.OVER WRITE HEAD3-14.OPTICAL PICK-UPOF MD KMS-260B/J1N 4-2.SETTING THE TEST MODE 4-1.PRECAUTIONS FOR USE OF TEST MODEProcedure 1: Press the Procedure 2: Press the4-5.SELECTING THE TEST MODE 4-5-3. Non-VolatileMemory Mode EEP MODE 4-5-1.Operating the Continuous Playback Mode4-6.FUNCTIONS OF OTHER BUTTONS 2. Error rate display4-7.TEST MODE DISPLAYS 1. Mode displayContents MEANINGS OF OTHER DISPLAYSWhen Lit When OffMD SECTION 5-1.PARTS REPLACEMENT AND ADJUSTMENT SECTION ELECTRICAL ADJUSTMENTSOptical pick-upflexible board 5-4.PRECAUTIONS FOR ADJUSTMENTS5-5.CREATING CONTINUOUSLY RECORDED DISC Checking Procedure 5-6-1.Temperature Compensation Offset Check5-6-2.Laser Power Check Connection Checking ProcedureCD Error Rate Check 5-6-5.C PLAY Checking MO Error Rate Check5-6-4.Focus Bias Check 5-6-6. Self-Recording/playbackCheck5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT 5-7.INITIAL SETTING OF ADJUSTMENT VALUE5-10.LASER POWER ADJUSTMENT Setting ProcedureAdjusting Procedure 5-11.TRAVERSE ADJUSTMENTSpecified Value ConnectionAdjusting Procedure 5-12.FOCUS BIAS ADJUSTMENT5-15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 5-13.ERROR RATE CHECK5-13-1.CD Error Rate Check 5-13-2.MO Error Rate CheckCD SECTION 5-15.ADJUSTING POINTS AND CONNECTING POINTSBD MD BOARD SIDE A BD MD BOARD SIDE B4040 HCD-MD373 SECTION DIAGRAMS6-1.CIRCUIT BOARDS LOCATION TUNER UNIT is supplied as the assembled block•SIGNAL PATH CD 6-2.BLOCK DIAGRAMS – BD CD SECTION –HCD-MD373 Page– BD MD SECTION 1/2 – 4242R-chis omitted Siganl pathPage – BD MD SECTION 2/2 –HCD-MD373 Page– MAIN SECTION – 4444HCD-MD373 PageFor printed wiring boards For schematic diagramsWAVEFORMS – BD CD SECTION – – BD MD 1/2 SECTION –• See page 40 for Circuit Boards Location 6-3.PRINTED WIRING BOARD – BD CD SECTION –HCD-MD373 Page•See page 67 for IC Block Diagrams 6-4.SCHEMATIC DIAGRAM – BD CD SECTION –See page 45 for Waveforms •See page 69 for IC Pin Functions•Semiconductor Location 6-5.PRINTED WIRING BOARD - BD MD SECTIONHCD-MD373 Page•See page 65 for IC Block Diagrams 6-6.SCHEMATIC DIAGRAM – BD MD SECTION 1/2 –•See page 71 for IC Pin Functions HCD-MD373•See page 48 for Printed Wiring Board 6-7.SCHEMATIC DIAGRAM - BD MD SECTION 2/2•See page 66 for IC Block Diagrams HCD-MD3736-9.PRINTED WIRING BOARD – SP SECTION – 6-8.SCHEMATIC DIAGRAM - SP SECTIONPage Page•See page 40 for Circuit Boards Location 6-10.PRINTED WIRING BOARD – MAIN SECTION –HCD-MD373 Page• See page 68 for IC Block Diagrams 6-11.SCHEMATIC DIAGRAM – MAIN SECTION 1/3 –HCD-MD373 Page•See page 52 for Printed Wiring Board 6-12.SCHEMATIC DIAGRAM – MAIN SECTION 2/3 –•See page 68 for IC Block Diagrams HCD-MD373Page Page 6-13.SCHEMATIC DIAGRAM - MAIN SECTION 3/3See page 75 for IC Pin Functions See page 52 for Printed Wiring Board•See page 67 for IC Block Diagrams 6-14.SCHEMATIC DIAGRAM – MD DIGITAL SECTION –HCD-MD373 PagePage Page Page Page 6-15.PRINTED WIRING BOARD – MD DIGITAL SECTION –HCD-MD373 • See page 40 for Circuit Boards LocationHCD-MD373 6-16.SCHEMATIC DIAGRAM – AMP SECTION –Page PageHCD-MD373 6-17.PRINTED WIRING BOARD – AMP SECTION –Page Page See page 40 for Circuit Boards LocationPage 6-18.SCHEMATIC DIAGRAM - PANEL SECTIONHCD-MD373 • Semiconductor Location 6-19.PRINTED WIRING BOARD – PANEL SECTION –HCD-MD373 PagePage Page 6-20.SCHEMATIC DIAGRAM – POWER SECTION –HCD-MD373 HCD-MD373 6-21.PRINTED WIRING BOARD – POWER SECTION –Page Page6-23.PRINTED WIRING BOARD – BD SWITCH SECTION – 6-22.SCHEMATIC DIAGRAM – BD SWITCH SECTION –6-24.SCHEMATIC DIAGRAM – LOADING SECTION – 6-25.PRINTED WIRING BOARD – LOADING SECTION –IC101 CXA2523AR 6-26.IC BLOCK DIAGRAMS• BD MD Board 1/2 IC121 CXD2654R IC152 BH6511FS-E2• BD MD Board 2/2 IC101 CXD2587Q • BD CD BoardC103 CXA2568M-T6 • MD DIGITAL BoardIC171 LB1641 • MAIN Board 3/3• MAIN Board 1/3 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 17 16 SECTION EXPLODED VIEWS7-1.CASE AND FRONT PANEL SECTION 11 20 61 54 7-2.CHASSIS SECTION 5259 #3 124 113 111112 117 118 114 7-3.MD MECHANISM DECK MDM-5A 113 110 107120 122 123 103 102 101163 170166 7-4.MD BASE UNIT MBU-5A 152 164162 161 157 152 152201 204 203 7-5.CD MECHANISM DECK CDM55A-5SBD32214 215 217 214 Ver255 256 7-6.CDBASE UNIT BU-5SBD32253 258 251315 317 7-7.CD MECHANISM DECK CDM55C-5BD32314 314 Ver 1.1BU identification: metal turntable without magnet 7-8.CDBASE UNIT BU-5BD32355 356 353 354SECTION ELECTRICAL PARTS LIST BD CD BD CD BD MDBD MD MD DIGITALMD DIGITAL LOADING MAIN MAIN Ref. No MAINPart No MAINPANEL PANEL POWERPOWER Ref. No HCD-MD373Ver HCD-MD373 MEMOBU-5BD32 HCD-MD373 REVISION HISTORY1999.08 Date