Main Board IC100 CXD8607N, IC101 CXA8054M, IC203 | Sony MDS-JB920

– MAIN Board –

IC100	CXD8607N
INRP	1	+				+	56	INLP
INRM	2	–	MODULATOR	MODULATOR		–	55	INLM
INRM	2	–				–	55	INLM
REFI	3						54	REFO
AVDD	4						53	LVSS
AVSS	5		DECIMATION	DECIMATION			52	LVDD
APD	6		DECIMATION	DECIMATION			51	AVSS(LF)
APD	6		FILTER		FILTER	VOLTAGE	51	AVSS(LF)
NU	7					VOLTAGE	50	NU
NU	7					REFERENCE	50	NU
NU	8		LOW CUT		LOW CUT		49	NU
TEST1	9		LOW CUT		LOW CUT		48	VSS1(LF)
TEST1	9		FILTER		FILTER		48	VSS1(LF)
LRCK1	10						47	TEST3
BCK1	11						46	TEST2
ADDT	12			I/O			45	VSS1
V35A	13			I/O			44	VDD1
V35A	13						44	VDD1
VSS1 (LF)	14						43	VDD1
MCKI	15			OVER			42	VDD2
DPD	16			OVER	MOIZE		41	L1
DPD	16		ATT	SAMP	MOIZE	PLM	41	L1
			ATT	SAMP	SHAPER	PLM
VSS2(LF)	17			FILTER	SHAPER		40	AVDDL
VSS2(LF)	17			FILTER			40	AVDDL
INIT	18						39	L2
MODE	19	CPU					38	AVSSL
SHIFT	20	CPU					37	XVSS
SHIFT	20	INTERFACE					37	XVSS
LATCH	21	INTERFACE					36	XIN
LATCH	21		I/O				36	XIN
256CK	22		I/O				35	XOUT
256CK	22						35	XOUT
V35D	23						34	XVDD
VSS2	24						33	AVSSR
512CK	25						32	R2
BCK2	26			OVER	NOIZE		31	AVDDR
DADT	27		ATT	SAMP	NOIZE	PLM	30	R1
			ATT	SAMP	SHAPER	PLM
				FILTER	SHAPER
LRCK2	28			FILTER			29	VDD2
LRCK2	28						29	VDD2

IC101	CXA8054M
VREF	AINR+	AINR–	OUTR	VREFR			OUTR–	OUTR+	AVDD
20	19	18	17	16	15	14	13	12	11
		–
		+
						–
						+
							+
							–
				+
				–
1	2	3	4	5	6	7	8	9	10
VREF	AVSS	AINL+	AINL–	OUTL	VREFL			OUTL–	OUTL+

	IC203, 204		CXA8042AS
	I01+	1			28	IN2–
	I02–	2			27	IN2+
	NC	3			26	NC
	I01–	4			25	IN1+
	I02+	5		SWITCHING	24	IN1–
	NC	6		CIRCUIT	23	NC
	NC	6			23	NC
	VCC2	7			22	C4
	C2	8			21	C3
	C1	9			20	GND2
					19	VEE2
	VCC1	10
			REFERENCE	CONSTANT	18	VEE1
	VREF	11	VOLTAGE	CURRENT	18	VEE1
	VREF	11	VOLTAGE	CURRENT	17	C6
			CIRCUIT	CIRCUIT	17	C6
			CIRCUIT	CIRCUIT
				CONTROL	16	C5
	VCNT	12		CIRCUIT	15	CIREF
	GND1	13
	RIREF	14

– 72 –

Image 56

Sony MDS-JB920 service manual Main Board IC100 CXD8607N, IC101 CXA8054M, IC203, CXA8042AS

Contents

MDM-5A SpecificationsMDS-JE520 SELF-DIAGNOSIS Function General Items of Error History Mode Items and Contents Section Servicing Notes Table of ContentsDiagrams Varoitus Flexible Circuit Board RepairingVarning JIG for Checking BD Board Waveform IOP Record Precedure REC/PLAY Checks Prior to Parts Replacement and AdjustmentsForced Reset Retry Cause Display Mode Precedure Hexadecimal nBinary Conversion Table Front view Rear view Section GeneralLocation of Controls Page Page Section Disassembly Case Front Panel Seciton Main Board Mechanism Section MDM-5A Slider CAM Base Unit MBU-5A, BD Board SW BOARD, Loading Motor M103 Section Test Mode Precautions for USE of Test ModeSetting the Test Mode Exiting the Test Mode Selecting the Test Mode Display Contents Mark Group MID Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode Test Mode Displays Functions of Other ButtonsAuto gain display Not used in servicing Detrack check display Not used in servicing Display Contents When Lit When Off Meanings of Other Displays Section Electrical Adjustments Parts Replacement and Adjustment Precautions for Checking Laser Diode Emissinon Precautions for USE of Optical PICK-UP KMS-260APrecautions for Adjustments Laser power meter Temperature Compensation Offset Check Laser Power CheckCheck Prior to Repairs Traverse Check Play Checking MO Error Rate Check CD Error Rate CheckFocus Bias Check Self-Recording/playback Check Initial Setting of Adjustment Value Temperature Compensation Offset AdjutmentLaser Power Adjustment Recording and Displaying the IOP Information Traverse Adjustment Focus Bias Adjustment Error Rate Check Auto Gain Control Output Level AdjustmentCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level Adjustment Adjusting Points and Connecting Points IC PIN Function Description Section DiagramsBD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMP Srdt SensXrst Sqsy Xras XWEMvci Asyo Srdr SfdrSprd Spfd Main Board IC100 CXD8607N A/D Converter Avddl VDD1TEST2 Lvdd Main Board IC800 M30610MCA-264FP System Controller MDS-JB920 Block Diagram Servo Section ∙ Signal PathREC Analog REC Digital Play Digital OUT Block Diagram Main Section∙ Signal Path Play Analog OUT Circuit Boards Location Printed Wiring Boards BD Section MDS-JB920 Schematic Diagram BD /2 See 53 for Waveforms. See page 70 and 71 for IC Block Diagrams Waveforms BD board Main board Disp board MDS-JB920 MDS-JB920 MDS-JB920 MDS-JB920 Other layers pattern Side a US, CND Schematic Diagram Panel Section See page 54 for Waveforms Schematic Diagram BD Switch Section Printed Wiring Board BD Switch SectionIC Block Diagrams BD Board IC101 CXA2523AR IC121 CXD2654R IC152 BH6511FS-E2 Main Board IC100 CXD8607N IC101 CXA8054MIC203 CXA8042AS IC200 CXD8767N SN74HC153ANS SN74HCU04ANS-E20 Section Exploded Views Chassis Section Front Panel Section Supplied with RV760 209 4-988-466-21 Spring ELECTROSTATIC, Leaf 206 201204 205 Base Unit Section MBU-5A Section Electrical Parts List TANTAL. Chip DiodeDiode F1J6TP CXA2523AR Disp Main C252 Mylar HZS6C1L HZ7.5CP-TKCXA8042AS SN74HC153ANS 390 Main PSW Coil with Core VibratorLED SEL6210S-TH10 Standby LED SEL6810A-TH10 Mega Control Transistor SW VOL Sony Corporation