FS4, Srdr, Sfdr, Sprd, Spfd, TEST1 | Sony 4-216-840-0 specs

	Pin No.	Pin Name	I/O	Description

	90	FS4	O	Clock signal (176.4 kHz) output terminal (X’tal system) Not used (open)

	91	SRDR	O	Sled servo drive PWM signal (–) output to the BH6511FS (IC152)

	92	SFDR	O	Sled servo drive PWM signal (+) output to the BH6511FS (IC152)

	93	SPRD	O	Spindle servo drive PWM signal (–) output to the BH6511FS (IC152)

	94	SPFD	O	Spindle servo drive PWM signal (+) output to the BH6511FS (IC152)

	95	FGIN	I (S)

	96	TEST1	I	Input terminal for the test (fixed at “L”)

	97	TEST2	I
	97	TEST2	I

	98	TEST3	I

	99	DVSS	—	Ground terminal (digital system)

	100	EFMO	O	EFM signal output terminal when recording mode

* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.

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Sony 4-216-840-0 service manual FS4, Srdr, Sfdr, Sprd, Spfd, TEST1, TEST2 TEST3 Dvss

Contents

Specifications MDS-JE520MDM-5A SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Table of Contents DiagramsSection Servicing Notes Varning Flexible Circuit Board Repairing IOP JIG for Checking BD Board Waveform Record Precedure Criteria for Determination Measure if unsatisfactory Checks Prior to Parts Replacement and Adjustments Precedure Retry Cause Display Mode Hexadecimal nBinary Conversion Table Section General Section Disassembly CoverFront Panel Section Mechanism Deck Section MDM-5A Main Board Base Unit MBU-5A, BD Board Slider CAM SW BOARD, Loading Motor M103 Precautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test Mode Display Contents Mark Group Selecting the Test Mode Non-Volatile Memory Mode EEP Mode Operating the Continuous Playback ModeMID OUT Functions of Other Buttons Test Mode Displays Meanings of Other Displays Parts Replacement and Adjustment Section Electrical Adjustments Precautions for USE of Optical PICK-UP KMS-260A Precautions for Checking Laser Diode EmissionPrecautions for Adjustments Laser power meter Laser Power Check Temperature Compensation Offset CheckCheck Prior to Repairs Traverse Check CD Error Rate Check Play Checking 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 Information Traverse Adjustment ING CONTINUOUSLY-RECORDED Disc 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 Location IC PIN Function Description Section Diagrams Xlat MNT2 XbusySrdt Sens XWE XrasAsyo Asyi Srdr FS4Sfdr Sprd Byte AderCnvss RST Chack STBLdin LD-LOW ∙ Signal Path Block Diagram MD Servo SectionPlay Analog OUT REC Analog REC Digital REC Analog Block Diagram Main Section CND Circuit Boards Location Semiconductor Location MDS-M100 65 for Waveforms. See page 51 for IC Block Diagram Schematic Diagram BD Board 2/2 See Printed Wiring Board SW Board Schematic Diagram SW Board Main Board IC301 ΜDA1341TS/N2 IC121 CXD2654RIC406 M62016L IC421 M5293L IC152 BH6511FS-E2 MDS-M100 Semiconductor Location Schematic Diagram Main Board 1/2 See page 65 for Waveform MDS-M100 Ref. No Location D741 D742 IC761 Q741 Q742 Q767 MDS-M100 Section Exploded ViewsCover Section AEP, SP Chassis Section 201 206 204 205 Mechanism Section MDM-5A209 4-988-466-11 Spring ELECTROSTATIC, Leaf 221 A-4680-409-A Holder Complete Assy Base Unit Section MBU-5A AC Select BD Section Electrical Parts List IC/TRANSISTOR Short SwitchCXA2523AR Transistor FMW1 Connector MainCeramic Inductor CarbonExcept US, CND Main Panel Panel SW Trans Sony Corporation