IC401 BH6519FS-E2, Main Board | Sony MDS-NT1 guide

MDS-NT1

IC401

BH6519FS-E2

CAPA–

CAPA+

IN2R

IN2F

VM2

OUT2F

PGND2

OUT2R

VM12

OUT1R

PGND1

OUT1F

VM1

IN1F

IN1R

VDD

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

INTERFACE

AMP

AMP

AMP

AMP

INTERFACE

VDD

CHARGE

PREDRIVE

PREDRIVE

PUMP.

OSC

PREDRIVE

PREDRIVE

INTERFACE

AMP

AMP

AMP

AMP

INTERFACE

PSB

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

GND

VG

IN4R

IN4F

VM4

OUT4F

PGND4

OUT4R

VM34

OUT3R

PGND3

OUT3F

VM3

IN3F

IN3R

PSB

– MAIN Board –

IC400		MAX1626ESA-TE2
										8	GND
										7	EXT
				1.5V
				ERROR		MINIMUM ON-TIME
				ERROR			ONE-SHOT
			COMPARATOR				ONE-SHOT
		R2	COMPARATOR				TRIG	Q
OUT	1	R2		–			TRIG	Q
OUT	1			–
				+
							TRIG	Q
		R3	R1			MINIMUM OFF-TIME
							ONE-SHOT
3/5	2
				+
SHDN	3			REF	Q
					R		S
REF	4
								–		6	CS
						CURRENT-SENSE		+	– +	5	V+
						COMPARATOR
IC420		M62016FP-E1
		VCC		NC	NC	NC
		3		4	5	6
	R1		COM	INTERRUPT
			COM
			+
			+	SIGNAL		8	INT
			–	SIGNAL		8	INT
			–	GENERATOR
	R2			GENERATOR
	R2
R3
			COM	RESET
			+	RESET		1	RESET
			+	SIGNAL
			–	SIGNAL
R4			–	GENERATOR
R4				GENERATOR
			7		2
			GND		CD

49

Image 49

Sony MDS-NT1 service manual IC401 BH6519FS-E2, Main Board

Contents

MDS-NT1 Specifications MDS-NT1 SELF-DIAGNOSIS Function Playback Recording Cause/Remedy Indicator Green Red MDS-NT1 Items of Error History Mode Items and Contents Error Code Details of Error Table of Error Codes Disassembly Table of ContentsDiagrams SELF-DIAGNOSIS Function Flexible Circuit Board Repairing BD Board Conductor Side MDS-NT1 Section Servicing Notes JIG for Checking BD Board Waveform Record Procedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and Adjustments in MD Software Reset Service ModeMicrocomputer Version Display System Requirements Front View MDS-NT1 Section General Disassembly Flow MDS-NT1 Section Disassembly Case Upper MD Mechanism Deck MDM-7S2B Main Board BD BOARD, Over Write Head HR901 Front Panel Section Loading Motor Assy M103 Holder Assy Optical PICK-UP KMS-262E Sled Motor Assy M102 Spindle Motor Assy M101 Precautions for USE of Test Mode MDS-NT1 Section Test ModeSetting the Test Mode Releasing the Test Mode Check Selecting the Test Mode Operating the Continuous Playback Mode Information Automatic SELF-DIAGNOSIS Function Parts Replacement and Adjustment MDS-NT1 Section Electrical AdjustmentsCheck before replacement YES Adjustment flow Precautions for USE of Optical PICK- UP KMS-262A/262E Precautions for Checking Laser Diode EmissionHOW to Identify Optical PICK-UP KMS- 262A/KMS-262E KMS-262A KMS-262E Laser power meter Precautions for Adjustments Temperature Compensation Offset Check Using the Continuously Recorded DiscLaser Power Check Checks Prior to Repairs Other Checks Auto CheckTraverse Check CD Error Rate Check Play Check MO Error Rate CheckFocus Bias Check Self-Recording/playback Check Temperature Compensation Offset Adjustment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the Iop Iop NV Save Traverse Adjustment ENTER/YES button Focus Bias Adjustment Auto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level Adjustment Adjustment and Checking Loacation Block Diagram Servo Section MDS-NT1 Section Diagrams 36 a Block Diagram Main Section 22.7 ns Waveforms BD Board Semiconductor Location Printed Wiring Board BD Board 4AA 3AA B3B 2BB Schematic Diagram BD Board 2/2 See page 38 for Waveforms IC451 Printed Wiring Board Main Board Component Side Main Board Printed Wiring Board Main Board Conductor Side 1AA AA2 AA3 GND Panel Board Conductor Side Printed Wiring Board Panel Board Schematic Diagram Panel Board CXA2523AR IC Block Diagrams BD Board Main Board IC401 BH6519FS-E2 IC440 M54641L IC PIN Function Description BD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMP MNT2 Xbusy Xcas APC Main Board IC301 M30835FJGP-01 System Controller PLAY-SW Pin No Extal Case Section Section MDS-NT1 Exploded Views 56 4-951-620-01 Screw 2.6X8, +BVTP 102 101 103 Case B Section104 105 302 306 320 301 305 313 314 315 316 311 310 319 304 308317 303 307 358 357 360 356 359364 355 354 362 359 352 Resistors MDS-NT1 Section Electrical Parts List Diode MDS-NT1 Main Switch FB1 Miscellaneous MDS-NT1 Main Panel Motor ASSY, Loading Revision History