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LG Electronics GSA-4167B, GSA-4168B, GSA-4165B service manual Input/Output circuit diagram

Models: GSA-4167B GSA-4165B GSA-4168B

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Input/Output circuit diagram

SPIN, SL1IN, SL2IN			FOIN, TOIN,TLIN		REF			EN1, EN2
LOIN			TEST
5VCC			5VCC		5VCC			5VCC
5VCC			5VCC		5VCC
	100		100		100			100
	100		100		100
								17k
								35k
SPGS			ACTFLG,FG		ACTRST			COMMON
(Temperature monitor)						5VCC
								VM1
5VCC			5VCC		5VCC		10k
			5VCC
		5VCC
					100			100
	100				100			COMMON
								COMMON

	25k
VM1, U, V, W					VM2, SL1+, SL1-, SL2+, SL2-
	VM1						VM2
	VM1
U	V	W			SL1+	SL1-	SL2+	SL2-
5VCC, FO+, FO-, TO+, TO-, TL+, TL-							VM3, LO+, LO-
			5VCC					VM3
								VM3
FO+	FO-	TO+	TO-	TL+	TL-		LO+	LO-
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LG Electronics GSA-4167B, GSA-4168B, GSA-4165B service manual Input/Output circuit diagram

Contents

P/NO 3828HS1047G August Printed in Korea SERVICE MANUALSuper Multi DVD Drive MODEL GSA-4165B GSA-4167B GSA-4168BTABLE OF CONTENTS CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAMINTRODUCTION 1. Support feature and writable discFEATURES 1 General2. Supported disc formats 3. Supported write method1x CD = 150 kB/s 4. Performance5. Audio SPECIFICATIONS Operating SystemRecording tool 2.1 Applicable disc formats2.5 RPC Regional Playback Control Phase2, No Region 3. DRIVE PERFORMANCE2.4 Data capacity 3.2 Read/Write & Rotational speed2.77, 5.54 Mbytes/s 3.4 Access time 1/3 stroke3.3 Data transfer rate 5. POWER REQUIREMENTS 8. Dimensions4. Quality and Reliability 6. AUDIO PERFORMANCELOCATION OF CUSTOMER CONTROLS Front Pane lDrive Activity Indicators Drive activity indicatorRear Pane l Analog Audio Output ConnectorIDE Interface Connector Jumper Connector Digital Audio Output ConnectorDISASSEMBLY 1. CABINET and CIRCUIT BOARD DISASSEMBLY2. MECHANISM ASSY DISASSEMBLY Emergency Eject Hole2-2. Pick-up EXPLODED VIEW PBM00 MAIN C.B.APBF00 FRONT C.B.A LightScribe onlyMulti session GLOSSARYLogical Erase 2. Disc Specification The differences of CD-R/CD-RW discs and General CD-ROM1. Recording Layer a=30nm3. Disc Materials 1 CD-ROM disc2 CD-R disc PigmentFocusing 4. Reading process of Optical DiscLens GrooveAmorphous 5. Writing Process of CD-R Disc6. Writing process of CD-RW Disc 2 Layout of CD-R/RW disc 7. Organization of the PCA, PMA and Lead-in Area1 Layout of CD-ROM disc 1 PCA Power Calibration Area 1 OPC Optimum Power Control8. Function of PCA and PMA area 9. OPC and ROPC10. Writing Process of DISC The differences of DVD-R/RW, DVD+R/RW discs and DVD-ROM 0.4 umDVD-R/RW Disc LPP Land Pre-Pit DVD+R/RW Disc 1. Recording Layer2. Disc Specification 3. Disc Materials1 DVD-ROM Single LayerDisc structure 2 Recording format using organic dye material DVD-R/DVD+RDisc structure Data erased state Disc structureRecording principles 4. Writing Pulse Wave Form of DVD+R NRZIN = 3 only the top pulseTtop , first pulse lead-time dT top , dTle NRZI2 2st Method Using Blocked Write Strategy 5. Writing Pulse Wave Form of DVD+RW NRZIChannel bits TtopDisc Center Diameter 120 mm1 Layout of DVD-ROM disc 2 Layout of DVD+R discDiameter 120 mm 3 Layout of DVD+RW discDisc Center DiscOD Label Zone Control Feature Zone Clamping/Logo Zone Center Hole LightScribe Media1. LightScribe Media Screen Printed Imaging Layer Clear Protective Coating2. Hardware Block Diagram Label PrintingLaser Power Reference Write Strategy Control SERVO SignalsOPU ID Movement Range L=21um 3. MD Assy For LightScribeOptical Encoder Unit Schematic of Enc PCB 4. Optical Encoder AssyEncoder PCB Optical Encoder IC FFC 3PINP-up Unit HOP-7632TS CD DATA PROCESSINGData Processing Flow 2. Copy Protection and Regional Code Management Block Block DiagramR8J32007 HOST DVD PLAYER EMPEG2 B/DIf you want to play the disc prevented from the copy 3. About Prevention the DVD-ROM from to be copyIn case of a disc enhanced movie of 3 titles Example The disc manufactured in the U.S.A, has the number one 4. About the DVD-ROM Regional CodeRegional code 1. Block Diagram of the PICK-UPHOP-7632TS INTERNAL STRUCTURE OF THE PICK-UPSignal Description 2. Pick up Pin AssignmentSignal Name 3. Signal detection of the P/U Track CenterTp/2 MainCIRCUITDESCRIPTION OF 1. ALPC Automatic Laser Power Control Circuit IC301 R8J32007CN101 IC101 R2S350021-2. ALPC Automatic Laser Power Control Circuit 2. Focus Circuit IC101R2S35002 Disc3. Tracking & Sled Circuit IC101R2S35002 DiscIC101 R2S35002Disc Optical3-2-1. Tracking Servo 3-2-2. Sled Servo4. Spindle Circuit 4-1-1. Block DiagramFGCAV ServoOptical Pick-up4-2-1. Block Diagram Wobble CLV Servo 4-2-2. Wobble CLV Servo CD-R 4x, 8x, 16x, 24x, 32xCD-RW 4x, 10x, 16x, 24x DVD-R 2x, 4x, 8x, 16xPCAV DVD-R DL 2x DVD-RW 1x, 2x, 4x DVD+R 2.4x, 4x, 8x, 12x, 16xPCAVIC101 R2S35002 RF AMP Analog Signal Processor MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTIONR2S35002 TOP VIEWPick BALANCEPin Functions pin Namepin No TypeEqualizer fc auto-adjustment control clock input terminal pin Namepin No Typepin Name pin NoType max. voltageR8J32007 IC301 R8J32007FPV Encoder, Decoder & DSP Singal ProcessorTop View Descramble 1.2 Block DiagramDemodulate 1.3 Pin Table Pin noPin Name Pin noData PLL/PRML Pin List Pin NamePin No destinationServo Pin List Pin NamePin No destinationATAPI Interface Pin List Pin NamePin No destinationEncoder Interface Pin List Pin NamePin No destinationAudio Interface Pin List Pin NamePin No destinationLSI/TEST Control Pin List Pin NamePin No destinationPower Supply/GND Pin List Pin NamePin No FunctionR2S3 0202FP IC601 R2S30202FP SPINDLE MOTOR AND 6CH ACTUATOR DRIVERPackage outline 42 PIN POWER SSOP 42P9R-K Page Input/Output circuit diagram TROUBLESHOOTING GUIDE 01 Laser Power Adjust using RD Power/WR Power/Erase Power02 High Frequency/NRZI skew Adjust 03 Data Slice/Equalizer Boost/Raw Slice/ Equalizer Frequency Adjust08 Servo Loop Gain Adjust 06 Focus Amp. and Total Amp. Adjust07 Tracking Amp. Adjust 09 Unwritten Slice Level Adjust for DVD-RAM 10 Focus Offset Adjust for DVD-ROM, CD-R/RW11 Focus Offset Adjust for DVD-RAM PID Amp 12 Focus Offset Adjust for DVD-RAM Data Error pulse13 Tilt Adjust for DVD-RAM 14 Tilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW15 Focus Deviation Adjust 16 Focus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW17 Lens Sensitivity Adjust 18 Spindle Offset Adjust19 ADIP BPF/Read Timing Adjust for DVD+R/RW 20 Focus Offset Adjust for DVD-R/RW, DVD+R/RWDID21 RTZ TimeOut Fail 22 Focus Servo/Tracking Servo FailAll Disc Slider#6,8-10Detail Error Code & Fail Analysis 1. Laser Power Initial Adjust SSB Byte8,92. Adjusting Error during Disc Load Sequence Lead in Error SSB Byte21,22SSB Byte21,22 SSB Byte21,22 SSB Byte21,22 3. Loading Sequence Error Lead in Error SSB Byte21,22JR6 Power Supply System Diagram 5V in SW702SW701 IC701PCB Poor Analysis - Check list HW Self- Diagnostic function 1. Self-Diagnostic Function by LED Blink 4 The defect of Flash-ROM 2 Does the power supply circuit operate normally?3 Is the clock of MPU in DSP oscillated correctly? A control mode setup by the control terminal 3. Motor, Abnormalities in Actuator System1 IC601R2S30202FP 7ch driver A motor & actuator and its correspondence pinBLOCK DIAGRAM Host IDE12V GND 5V OPUHOP-7632TS HITACHI ME