Manuals / LG Electronics / TV and Video / DVD Player

LG Electronics GSA-4165B, GSA-4168B, GSA-4167B pin Name, pin No, Type, max. voltage, Function

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

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	pin Name	pin No.	Type	max. voltage		Function

	SUBO/LPPMON	71	Analog-Output		ID detecting HPF output terminal/LPP detecting HPF
					output terminal

	EQFCF	72	External-capacitor required		Terminal to connect RF-equalizer fc auto-adjustment
					external capacitor

	IREFE	73	External-resistor required		Terminal to connect RF-equalizer fc setting external
					resistor

	AGHPF2	74	External-capacitor required		Terminal to connect AGC high pass filter capacitor
	AGHPF1	75

	AGFU	76	External-capacitor required		AGC filter connecting terminal
	AGFR	77	External-capacitor required

	VCC1	78	Power		Power supply connected terminal(5V)

	SUMF/SUMF2	79	Analog-Input/ /External-capacitor required VDD		SUM RF input/SUM differential amp. DC filter
					connected terminal

	RFIP	80	Differential-Input	VDD	RF differential input terminal
	RFIN	81

	SRVREF	82	Analog-Input	VDD	DSP supply voltage (3.3V) input terminal

	FVREFO	83	Analog-Output		2.5V reference bias voltage output terminal

	IREFT	84	External-resistor required		Terminal to connect reference current setting external
					resistor

	VREF1	85	Analog-Output		2.1V reference bias voltage output terminal

	HAVC	86	Analog-Input	VCC	Pickup reference voltage input terminal

	SA	87	Analog-Input	VCC	Sub beam 4D input terminal
	SB	88	Analog-Input
	SC	89	Analog-Input
	SD	90	Analog-Input

	VDD2	91	Power		Power supply connected terminal(3.3V)

	MA	92	Analog-Input	VCC	Main beam 4D input terminal
	MB	93	Analog-Input
	MC	94	Analog-Input
	MD	95	Analog-Input

	GND2	96	Ground		Ground connected terminal

	AIN1	97	Analog-Input	VDD	Analog input terminal
	AIN2	98	Analog-Input
	AIN3	99	Analog-Input

	SIGM	100	Analog-Output		Analog signal monitoring output terminal

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LG Electronics GSA-4165B, GSA-4168B, GSA-4167B service manual pin Name, pin No, Type, max. voltage, Function

Contents

MODEL GSA-4165B GSA-4167B GSA-4168B P/NO 3828HS1047G August Printed in KoreaSERVICE MANUAL Super Multi DVD DriveCAUTION - INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM TABLE OF CONTENTS1. Support feature and writable disc INTRODUCTION3. Supported write method FEATURES1 General 2. Supported disc formats5. Audio 4. Performance1x CD = 150 kB/s 2.1 Applicable disc formats SPECIFICATIONSOperating System Recording tool3.2 Read/Write & Rotational speed 2.5 RPC Regional Playback Control Phase2, No Region3. DRIVE PERFORMANCE 2.4 Data capacity3.3 Data transfer rate 3.4 Access time 1/3 stroke2.77, 5.54 Mbytes/s 6. AUDIO PERFORMANCE 5. POWER REQUIREMENTS8. Dimensions 4. Quality and ReliabilityDrive activity indicator LOCATION OF CUSTOMER CONTROLSFront Pane l Drive Activity IndicatorsJumper Connector Digital Audio Output Connector Rear Pane lAnalog Audio Output Connector IDE Interface ConnectorEmergency Eject Hole DISASSEMBLY1. CABINET and CIRCUIT BOARD DISASSEMBLY 2. MECHANISM ASSY DISASSEMBLY2-2. Pick-up LightScribe only EXPLODED VIEWPBM00 MAIN C.B.A PBF00 FRONT C.B.ALogical Erase GLOSSARYMulti session a=30nm 2. Disc SpecificationThe differences of CD-R/CD-RW discs and General CD-ROM 1. Recording LayerPigment 3. Disc Materials1 CD-ROM disc 2 CD-R discGroove Focusing4. Reading process of Optical Disc Lens6. Writing process of CD-RW Disc 5. Writing Process of CD-R DiscAmorphous 1 Layout of CD-ROM disc 7. Organization of the PCA, PMA and Lead-in Area2 Layout of CD-R/RW disc 9. OPC and ROPC 1 PCA Power Calibration Area1 OPC Optimum Power Control 8. Function of PCA and PMA area10. Writing Process of DISC 1. Recording Layer The differences of DVD-R/RW, DVD+R/RW discs and DVD-ROM0.4 um DVD-R/RW Disc LPP Land Pre-Pit DVD+R/RW DiscSingle Layer 2. Disc Specification3. Disc Materials 1 DVD-ROMDisc structure 2 Recording format using organic dye material DVD-R/DVD+RDisc structure Recording principles Disc structureData erased state NRZI 4. Writing Pulse Wave Form of DVD+RNRZI N = 3 only the top pulseTtop , first pulse lead-time dT top , dTle2 2st Method Using Blocked Write Strategy Ttop 5. Writing Pulse Wave Form of DVD+RWNRZI Channel bits2 Layout of DVD+R disc Disc CenterDiameter 120 mm 1 Layout of DVD-ROM discDisc Center 3 Layout of DVD+RW discDiameter 120 mm Screen Printed Imaging Layer Clear Protective Coating DiscOD Label Zone Control Feature Zone Clamping/Logo Zone Center HoleLightScribe Media 1. LightScribe MediaSERVO Signals 2. Hardware Block DiagramLabel Printing Laser Power Reference Write Strategy ControlOptical Encoder Unit 3. MD Assy For LightScribeOPU ID Movement Range L=21um FFC 3PIN Schematic of Enc PCB4. Optical Encoder Assy Encoder PCB Optical Encoder ICData Processing Flow CD DATA PROCESSINGP-up Unit HOP-7632TS HOST DVD PLAYER EMPEG2 B/D 2. Copy Protection and Regional Code Management BlockBlock Diagram R8J32007In case of a disc enhanced movie of 3 titles 3. About Prevention the DVD-ROM from to be copyIf you want to play the disc prevented from the copy Regional code 4. About the DVD-ROM Regional CodeExample The disc manufactured in the U.S.A, has the number one INTERNAL STRUCTURE OF THE PICK-UP 1. Block Diagram of the PICK-UPHOP-7632TSSignal Name 2. Pick up Pin AssignmentSignal Description Main 3. Signal detection of the P/UTrack Center Tp/2IC101 R2S35002 CIRCUITDESCRIPTION OF 1. ALPC Automatic Laser Power Control CircuitIC301 R8J32007 CN1011-2. ALPC Automatic Laser Power Control Circuit Disc 2. Focus CircuitIC101 R2S35002Disc 3. Tracking & Sled CircuitIC101 R2S35002Optical IC101R2S35002 Disc3-2-2. Sled Servo 3-2-1. Tracking ServoPick-up 4. Spindle Circuit4-1-1. Block DiagramFGCAV Servo OpticalDVD-RW 1x, 2x, 4x DVD+R 2.4x, 4x, 8x, 12x, 16xPCAV 4-2-1. Block Diagram Wobble CLV Servo4-2-2. Wobble CLV Servo CD-R 4x, 8x, 16x, 24x, 32x CD-RW 4x, 10x, 16x, 24x DVD-R 2x, 4x, 8x, 16xPCAV DVD-R DL 2xTOP VIEW IC101 R2S35002 RF AMP Analog Signal ProcessorMAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION R2S35002BALANCE PickType Pin Functionspin Name pin NoType Equalizer fc auto-adjustment control clock input terminalpin Name pin Nomax. voltage pin Namepin No TypeTop View IC301 R8J32007FPV Encoder, Decoder & DSP Singal ProcessorR8J32007 Demodulate 1.2 Block DiagramDescramble Pin no 1.3 Pin TablePin no Pin Namedestination Data PLL/PRML Pin ListPin Name Pin Nodestination Servo Pin ListPin Name Pin Nodestination ATAPI Interface Pin ListPin Name Pin Nodestination Encoder Interface Pin ListPin Name Pin Nodestination Audio Interface Pin ListPin Name Pin Nodestination LSI/TEST Control Pin ListPin Name Pin NoFunction Power Supply/GND Pin ListPin Name Pin NoPackage outline 42 PIN POWER SSOP 42P9R-K IC601 R2S30202FP SPINDLE MOTOR AND 6CH ACTUATOR DRIVERR2S3 0202FP Page Input/Output circuit diagram 03 Data Slice/Equalizer Boost/Raw Slice/ Equalizer Frequency Adjust TROUBLESHOOTING GUIDE01 Laser Power Adjust using RD Power/WR Power/Erase Power 02 High Frequency/NRZI skew Adjust07 Tracking Amp. Adjust 06 Focus Amp. and Total Amp. Adjust08 Servo Loop Gain Adjust 12 Focus Offset Adjust for DVD-RAM Data Error pulse 09 Unwritten Slice Level Adjust for DVD-RAM10 Focus Offset Adjust for DVD-ROM, CD-R/RW 11 Focus Offset Adjust for DVD-RAM PID Amp16 Focus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW 13 Tilt Adjust for DVD-RAM14 Tilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW 15 Focus Deviation Adjust20 Focus Offset Adjust for DVD-R/RW, DVD+R/RWDID 17 Lens Sensitivity Adjust18 Spindle Offset Adjust 19 ADIP BPF/Read Timing Adjust for DVD+R/RWSlider#6,8-10 21 RTZ TimeOut Fail22 Focus Servo/Tracking Servo Fail All DiscSSB Byte8,9 Detail Error Code & Fail Analysis 1. Laser Power Initial AdjustSSB Byte21,22 2. Adjusting Error during Disc Load Sequence Lead in ErrorSSB Byte21,22 SSB Byte21,22 SSB Byte21,22 SSB Byte21,22 3. Loading Sequence Error Lead in ErrorIC701 JR6 Power Supply System Diagram5V in SW702 SW701PCB Poor Analysis - Check list HW Self- Diagnostic function 1. Self-Diagnostic Function by LED Blink 3 Is the clock of MPU in DSP oscillated correctly? 2 Does the power supply circuit operate normally?4 The defect of Flash-ROM A motor & actuator and its correspondence pin A control mode setup by the control terminal3. Motor, Abnormalities in Actuator System 1 IC601R2S30202FP 7ch driverOPUHOP-7632TS HITACHI ME BLOCK DIAGRAMHost IDE 12V GND 5V