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LG LAD-9600 Service Manual

Av multimedia system
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Download this manual See also: Owner's Manual
P/NO : AFN31223664
NOVEMBER, 2006
AV Multimedia System
SERVICE MANUAL
MODELS : LAD-9600/LAD-9600R
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
FLIP
FLIP
TIL T
TIL
TIL
TIL T
T
T
DISP
DISP
DISP
DISP
CLOSE
CLOSE
CLOSE
CLOSE
WIDE
WIDE
WIDE
WIDE
NAVI
NAVI
NAVI
NAVI
MENU
MENU
MENU
MENU
EJECT
VOL
ARROW
SRC
RSE
BAND
RDS
PHONE
EQ
http://biz.lgservice.com

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  • Page 1 AV Multimedia System SERVICE MANUAL MODELS : LAD-9600/LAD-9600R CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. FLIP FLIP TIL T TIL T DISP DISP DISP DISP CLOSE CLOSE CLOSE CLOSE WIDE WIDE WIDE WIDE NAVI...
  • Page 2 CONTENTS SECTION 1 . . . SUMMARY SECTION 2 . . . CABINET & MAIN CHASSIS SECTION 3 . . . ELECTRICAL SECTION 4 . . . CPD-03 DVD/CD CAR MODULE PART SECTION 5 . . . REPLACEMENT PARTS LIST...
  • Page 3 SECTION 1 SUMMARY CONTENTS ESD PRECAUTIONS ........................1-3 SPECIFICATIONS ........................1-4 LOCATION OF CUSTOMER CONTROLS ................1-5...

  • Page 4: Esd Precautions

    ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

  • Page 5: Specifications

    SPECIFICATIONS • GENERAL Output Power 50W x 4CH (Max.) Power Source DC 12V Speaker impedance 4 Ω Ground System Negative Dimensions (W x H x D) 400 x 280 x 55 mm (Main unit) Dimensions (W x H x D) 256.8 x 163.8 x 40 mm (Hideaway unit) Net Weight 2.28 kg (Main unit)
  • Page 6 LOCATION OF CUSTOMER CONTROLS HEAD UNIT FRONT FLIP TILT DISP OPEN EJECT ARROW BAND PHONE 15 16 11. FLIP 11. RSE (Rear service) Turn the LCD panel horizontal temporarily Plays back two different sources as a main a when the LCD panel is upright. source and a subsidiary source.
  • Page 7 HEAD UNIT MONITOR WIDE MENU 1. WIDE 3. LCD Change the screen mode. DivX 2. BRIGHT -/+ Adjusts the monitor brightness...
  • Page 8 REMOTE CONTROL 1. POWER Switches the unit ON/OFF. SOURCE Selects a source. RSE (Rear service) You can play two different sources as main source and secondary source. 2. SKIP • Go to next (previous) chapter, track or file. • Return to the beginning of the current chapter, track or file. SCAN Backward (Forward) search playback.
  • Page 9 CONNECTING THE SYSTEM * OPTICAL OUT (Option) Main unit Power Cable (For main unit) Main unit/Hide-away unit Connecting Cable pink Microphone DIMMER Plug To lighting switch Filter Box terminal. Black GROUND (-) To the car body. Yellow TO BATTERY (+) Microphone Fuse 5A To the car battery,...
  • Page 10 CONNECTING THE SYSTEM Yellow Blue/White TO BATTERY (+) REMOTE ON To the car battery, To the amplifier continous +12 V DC. remote on. Black GROUND (-) TO IGNITION To the car body. To the terminal from which the power is Blue supplied when the POWER ANTENNA...
  • Page 11 CONNECTING THE SYSTEM REAR OUT VIDEO IN AUDIO AUX IN PRE-OUT (Rear Camera) Auxiliary Devices External Power Amplifier Camcorder Connecting the Reverse Gear If using an optional rear view camera, the reverse lead must be connected. 1. Clamp the reversing lamp lead. 2.
  • Page 12 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. CABINET AND MAIN FRAME SECTION ................2-3 2. AMP SECTION ..........................2-5 3. ACCESSORY SECTION ......................2-7...

  • Page 13: Exploded Views

    EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION A41 is consisted of FRONT KEY + FRONT EJECT Assembly. Therefore, 2EA's PCB Assembly is supplied if request purchase by A41's P/No. CONNE4 CABL40 CABL14 CABL20...

  • Page 14: Amp Section

    2. AMP SECTION...

  • Page 15: Accessory Section

    3. ACCESSORY SECTION LOC.No. DESCRIP Manual Assembly Battery, Manganese Plate Microphone, Condenser TION LOC.No. DESCRIP Cable Assembly Harness, Multi Harness, Single Harness, Single TION LOC.No. * OPTIONAL PART DESCRIP Bracket Bracket Panel, Audio Case Assembly TION LOC.No. DESCRIP Case Assembly Screw Screw Screw...

  • Page 16: Table Of Contents

    SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE....3-2 [AMP PART] 1. MAIN BOARD PART ..........3-2 13. HIDEAWAY_MICOM CIRCUIT DIAGRAM ...3-55 2. LCD PART ..............3-4 14. HIDEAWAY_AUDIO IC CIRCUIT DIAGRAM ..3-57 3. SEG LCD PART ............3-6 15. HIDEAWAY_LINE DRV, DIFF AMP 4. FRONT KEY PART...........3-6 CIRCUIT DIAGRAM ..........3-59 5.

  • Page 17: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. MAIN BOARD PART 1) POWER ON Error Disable Power ON? Is Power cable Insert & lock Power locked in CN100? Connector. Is cable normally Insert & lock inserted in CN603? CABLE. Is FRONT PANEL Is LED turned ON? Do the set operate? attached? Check state of...
  • Page 18 1. MAIN BOARD PART 2) DISC IN/OUT Error DISC IN/OUT Error? Is there “LG LOGO” in RSE monitor? Check around IC303. “9V” is supplied to L101? Check around IC100. Is FFC of CN604 normally inserted? Insert & Check. Is EJECT KEY CABLE normally inserted at Check.

  • Page 19: Lcd Part

    2. LCD PART 1) TFT LCD Trouble Screen don’t Turn on. Are V9.0_LCD, V5.0_DA & V5.0_D normal Check Main Board Power(IC100, IC102) and values? (CN701 : Pins 37, 39) Solve a Problem. Is TFT LCD Harness a normal state? Check Inverter Module and Solve a Problem. (AC power) Check whether Main Board is normal or not Do RGB &...
  • Page 20 2) When Touch panel don’t respond Touch Panel don’t respond. Is the change of Pulse at Do IC704 communicates? Check Main Board and CN705 pins 1, 2, 3, 4 when (Check IC704 pins 11, 12) Solve problem. press Touch Panel? Check IC704 &...

  • Page 21: Seg Lcd Part

    3. SEG LCD PART 1) When SEG LCD don’t turn on SEG LCD don’t turn on. Do INV_PWR turn on? V10_LED On? Check TFT LCD Board and (CN801 : pins 6, 7) (CN801 : pins 10, 11) FFC. Check Q704 at TFT LCD Board.

  • Page 22: Tuner Part

    5. TUNER PART FM/AM is not work. CHECK R5746, R5713 Check Audio Board IC520 VOLTAGE 8~9V. OUTPUT and Q532. CHECK R5714, R5715 Check Audio Board IC521 VOLTAGE 5V. OUTPUT. CHECK DATA SIGNAL R5716, R5717, R5728, R5729 (belong Check connection of CN503. to RDS/TMC operation).

  • Page 23: Audio Part

    6. AUDIO PART 1) NO POWER POWER RESET KEY Does reset signal appear? (IC502 PIN3) Check reset IC (IC502) Check MICOM power supply Is power supplied to MICOM(IC501)? (IC522 PIN3) Does clock waveform appear? (X501) Defective X-TAL (X501) Does ACC signal applied to MICOM? Check ACC input signal path (IC501 PIN21) (Q515, CN501 PIN9, JT5111)
  • Page 24 2) NO AUDIO OUTPUT NO AUDIO OUTPUT Is 9V applied to audio IC? Check 9V LDO output (IC520 PIN4 ) (IC505 PIN42, IC506 PIN29) A/V Switch audio output signal? Check audio output path (IC505 PINS52/54) Audio processor audio output signal? Check audio output path (IC506 PINS21/22/24/25) Is power supplied to POWER AMP IC?
  • Page 25 3) POOR AUDIO OUTPUT POOR AUDIO OUTPUT Volume control? Check volume knob assembly Sound Tone setting? Check tone control and balance fader setting Max audio output of each channel ? Check audio signal path REPLACE POWER AMP IC (IC507) 3-10...

  • Page 26: Block Diagrams

    BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM[WITH I/F] CVBS, AUDIO(L/R) FM/AM ANT REMOTE ON POWER ANT REVERSE GEAR HAND BREAK F/L+ F/L- F/R+ AUDIO F/R- HEAD HIDEAWAY UNIT UNIT R/L+ R/L- Opt ical R/R+ R/R- REAR CAMERA VIDEO IN ( CVBS, AUDIO L/R) AUX IN ( CVBS, AUDIO L/R) Int er Cable AUDIO PRE-OUT ( F/L,F/R,R/L,R/R)

  • Page 27: Block Diagram-[H/W]

    2. BLOCK DIAGRAM-[H/W] Main Unit Hideaway Unit Echo Canceller Front Spk FM1073 Power Rear Spk BlueTooth HOST TB2903HQ CPLD Module Module PreOutFront 2C67B Voice Line UART PreOutRear FLASH A_RGB SDRAM Driver SDRAM Phone 32MB 32MB Front Panel NJM2792 64MB Graphics Accelerator Key/IR Audio...

  • Page 28: Block Diagram-[S/W]

    3. BLOCK DIAGRAM-[S/W] 3-15 3-16...

  • Page 29: Main Block Diagram

    BLOCK DIAGRAMS_[ MAIN PART ] 4. MAIN BLOCK DIAGRAM 64MB 3-17 3-18...

  • Page 30: Main In/Out Block Diagram

    5. MAIN IN/OUT BLOCK DIAGRAM 1. PRE OUT(FL, FR, RL, RR, SWL, SWR) 2. REAR OUT(AV 1) 3. ANT-CONT REMOTE-CONT MONO : PHONE CD/DVD POWER_ON 1. AUX IN (2) 2. CAMERA IN (1) 3. ANT : RF (1) 4. H_BRAKE, REVERSE GEAR 3-19 3-20...

  • Page 31: Main Power Block Diagram

    6. MAIN POWER BLOCK DIAGRAM IC600 PPC5200 3-21 3-22...

  • Page 32: Tft Lcd Block Diagram

    7. TFT LCD BLOCK DIAGRAM INVERTER 5.0V LCD PANEL TOUCH 9.0V (AUO : A070FW03 V1) PANEL 12.0V PENIRQ 3.3V TSC2003 Analog RGB Analog RGB, ETC MAIN FRONT LCD 3.3V BOARD VP78 2.5V FRONT LCD Matrix Controller PT6524 DIMMING UPD78F0514GA(S)- LCD Load/Tilt Mechanism Module 3-23 3-24...

  • Page 33: Tft Lcd Power Block Diagram

    8. TFT LCD POWER BLOCK DIAGRAM Inverter Tilt Assy. -10V 3.3V Touch Panel Con LCD Driver IC 2.5V MICOM Seg. LCD Controller KEY LED Seg. LCD 3-25 3-26...

  • Page 34: Hideaway Block Diagram

    BLOCK DIAGRAMS_[ AMP PART ] 9. HIDEAWAY BLOCK DIAGRAM RSE AUDIO DVD VIDEO RSE AUDIO LINE DRV NJM2792 FRONT VIDEO NON-FAD AV SWITCH SRS WOW CAT5409 NJM2195 CD/DVD CXA2069Q MAIN FM/AM NON-FAD PREAMP AUDIO PREAMP F PREOUT F BEEP PROCESSOR PHONE LINE DRV NJM2792...

  • Page 35: Hideaway Power Block Diagram

    10. HIDEAWAY POWER BLOCK DIAGRAM Power AMP IC522 MICOM 5V (1A) IC521 5V (1A) RF/Tuner Q538 IC520 9V (5A) IC519 UART 5V (1A) IC540 10V (1A) IC541 10V (1A) 3-29 3-30...

  • Page 36: Circuit Diagrams

    CIRCUIT DIAGRAMS_[ MAIN PART ] 1. FRONT KEY_FRONT CIRCUIT DIAGRAM V3.3_D REMOCON FP_DETECT KEY_IN5 KEY_IN4 KEY_IN3 KEY_IN2 KEY_IN1 KEY_OUT5 KEY_OUT4 KEY_OUT3 V10_LED VOL_DN VOL_UP D_GND EVQQ5B05K 3-31 3-32...

  • Page 37: Front Key_Eject Circuit Diagram

    2. FRONT KEY_EJECT CIRCUIT DIAGRAM 3-33 3-34...

  • Page 38: Main_Cpu Circuit Diagram

    3. MAIN_CPU CIRCUIT DIAGRAM IC605 MAX708 3-35 3-36...

  • Page 39: Main_Ide, Memory Circuit Diagram

    4. MAIN_IDE, MEMORY CIRCUIT DIAGRAM 3-37 3-38...

  • Page 40: Main_Cpld, Io Circuit Diagram

    5. MAIN_CPLD, IO CIRCUIT DIAGRAM V3.3_D REMOCON FP_DETECT KEY_IN5 KEY_IN4 KEY_IN3 KEY_IN2 KEY_IN1 KEY_OUT5 KEY_OUT4 KEY_OUT3 V10_LED VOL_DN VOL_UP D_GND D_GND D_GND D_GND 3-39 3-40...

  • Page 41: Main_B/T, E/C, Audio Circuit Diagram

    6. MAIN_B/T, E/C, AUDIO CIRCUIT DIAGRAM D_GND D_GND D_GND 3-41 3-42...

  • Page 42: Main_Coral-Pa Circuit Diagram

    7. MAIN_CORAL-PA CIRCUIT DIAGRAM IC403 MB86296 [10] [11] IC403 M81296 [12] 3-43 3-44...

  • Page 43: Main_Dvd Circuit Diagram

    8. MAIN_DVD CIRCUIT DIAGRAM [13] [14] [15] [16] DGND [17] DGND DGND 3-45 3-46...

  • Page 44: Main_Power Circuit Diagram

    9. MAIN_POWER CIRCUIT DIAGRAM PGND PGND PGND 3-47 3-48...

  • Page 45: Tft Lcd_Lcd Drive Ic, Micom Circuit Diagram

    [18] [19] [20] [21] [22] 10. TFT LCD_LCD DRIVE IC, MICOM CIRCUIT DIAGRAM [23] [24] [25] [26] [27] [28] [29] 3-49 3-50...

  • Page 46: Tft Lcd_Power, Touch Panel Circuit Diagram

    11. TFT LCD_POWER, TOUCH PANEL CIRCUIT DIAGRAM VGS_VS VGA_HS GND_INV GND_INV KEY_IN3 KEY_IN4 KEY_OUT1 KEY_OUT2 KEY_IN2 KEY_IN1 V10_LED V10_LED TS_SCL TS_SDA PENIRQ LCD_RESET M_SPI_CE M_SPI_DO [30] M_SPI_DI M_SPI_CLK V12_M V12_M V9.0_LCD V9.0_LCD V5.0_DA V5.0_DA [31] [32] 3-51 3-52...

  • Page 47: Seg Lcd Circuit Diagram

    12. SEG LCD CIRCUIT DIAGRAM LCD1 IS10323E 3-53 3-54...

  • Page 48: Hideaway_Micom Circuit Diagram

    CIRCUIT DIAGRAMS_[ AMP PART ] [33] [34] [35] 13. HIDEAWAY_MICOM CIRCUIT DIAGRAM [36] FW_FLMDO V5.0_MC RESET FW_CLK FW_DIN FW_DOUT [37] D_GND D_GND REVERSE_GEAR ACC_IN T2OUT R2IN H_BRAKE D_GND REMOTE GPS_UTXD GPS_URXD D_GND FUSE P_GND FUSE B_UP [38] [39] [40] [42] [43] 3-55 3-56...

  • Page 49: Hideaway_Audio Ic Circuit Diagram

    14. HIDEAWAY_AUDIO IC CIRCUIT DIAGRAM GPS_UTXD GPS_URXD GPS_RESET HEAD_UTXD HEAD_URXD P_CONTROL u-RESET AV_GND PHONE+ PHONE- NAVI+ NAVI- AV_GND ZERO_R ZERO_L AV_GND MANUAL_RST MAIN_PWR AV_GND DVD_R+ DVD_R- AV_GND DVD_L+ DVD_L- AV_GND FRONT_VIDEO AV_GND DVD_VIDEO [41] 3-57 3-58...

  • Page 50: Hideaway_Line Drv, Diff Amp Circuit Diagram

    15. HIDEAWAY_LINE DRV, DIFF AMP CIRCUIT DIAGRAM RCA-420A REAL_LL REAL_LR AV_GND REAR_VIDEO AV_GND RCA-633A PREAMP_FL PREAMP_FR AV_GND PREAMP_RL PREAMP_RR AV_GND PREAMP_SWL PREAMP_SWR AV_GND RCA-633A VIDEO_R AUXIN_R AV_GND VIDEO_L AUXIN_L AV_GND VIDEO_V AUXIN_V AV_GND 3-59 3-60...

  • Page 51: Hideaway_Power Circuit Diagram

    16. HIDEAWAY_POWER CIRCUIT DIAGRAM AV_GND AV_GND AV_GND 3-61 3-62...

  • Page 52: Tuner Circuit Diagram

    17. TUNER CIRCUIT DIAGRAM 3-63 3-64...

  • Page 53: Waveforms

    • WAVEFORMS [ MAIN PART ] _ 1~17 [10] [11] [12] [13] [14] [15] [ TFT LCD PART ] _ 18~32 [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] 3-65 3-66...
  • Page 54 [26] [27] [28] [29] [30] [ HIDEAWAY PART ] _ 33~43 [31] [32] [33] [34] [35] IC501 PIN 12 (TW5031) IC501 PIN 15 (TW5033) IC501 PIN 18 (TW5020) [36] [37] [38] [39] [40] IC501 PIN 65 (TW5064) IC501 PIN 50 (TW5083) IC501 PIN 52 (TW5081) IC501 PIN 35 (TW5025) IC501 PIN 36 (TW5024)

  • Page 55: Circuit Voltage Chart

    • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 56 MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE VOLTAGE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.

  • Page 57: Main P.c. Board (Top View)

    MAIN PRINTED CIRCUIT DIAGRAMS_[ MAIN PART ] 1. MAIN P.C. BOARD (TOP VIEW) 3-73 3-74...

  • Page 58: Main P.c. Board (Bottom View)

    2. MAIN P.C. BOARD (BOTTOM VIEW) 3-75 3-76...

  • Page 59: Front Key & Eject P.c. Board (Top View)

    3. FRONT KEY & EJECT P.C. BOARD (TOP VIEW) 4. FRONT KEY & EJECT P.C. BOARD (BOTTOM VIEW) 3-77 3-78...

  • Page 60: Tft Lcd P.c. Board (Top View)

    5. TFT LCD P.C. BOARD (TOP VIEW) 6. TFT LCD P.C. BOARD (BOTTOM VIEW) 3-79 3-80...

  • Page 61: Seg Lcd P.c. Board (Top View)

    7. SEG LCD P.C. BOARD (TOP VIEW) 8. SEG LCD P.C. BOARD (BOTTOM VIEW) 3-81 3-82...

  • Page 62: [Amp Part]

    [ AMP PART ] 9. HIDEAWAY P.C. BOARD (TOP VIEW) 3-83 3-84...

  • Page 63: Hideaway P.c. Board (Bottom View)

    10. HIDEAWAY P.C. BOARD (BOTTOM VIEW) 3-85 3-86...

  • Page 64: Tuner P.c. Board (Top View)

    11. TUNER P.C. BOARD (TOP VIEW) 12. TUNER P.C. BOARD (BOTTOM VIEW) 3-87 3-88...
  • Page 66 SECTION 4 CPD-03 DVD/CD CAR MODULE PART CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE..................4-2 1. DISC LOADING .........................4-2 2. FOCUS SEARCH AND LASER DIODE..................4-3 3. SPINDLE ............................4-4 4. FOCUS SERVO ........................4-4 5. TRACK SERVO..........................4-5 6. READ RF ...........................4-5 CIRCUIT DIAGRAMS ........................3-6 1. CIRCUIT DIAGRAM_1 .......................4-6 2.

  • Page 67: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. DISC LOADING Check IC302 pin 2, 3, Is disc loaded normally ? Normal loading motor signal? CN303 connectivity and Polarity (Figure 1, 2) Check CN202 pin 4 and Normal loading SW signal? IC201 pin 1 Is The screen scrolled in uni- Normal sled motor driver form direction when don’t press Check IC301 pin 43...

  • Page 68: Focus Search And Laser Diode

    2. FOCUS SEARCH AND LASER DIODE Is optical lens moving verti- Is optical lens moving verti- Check IC301 pin 22 cally for searching focus? cally for searching focus ? Normal focus actuator Check IC301 pin 25, 26 driving signal ? and CN101 pin 1, 4 Does laser turn on during Does laser turn on during...

  • Page 69: Spindle

    3. SPINDLE Does spindle rotate Normal spindle Check IC301 pin 43 normally? driver power ? Check IC301 pin 6 and Normal spindle control signal CN302 pin 4, 5, 6, 7, 8, 9, and hall sensor input? 10 (Figure 5) Check IC301 pin 37, 39, Normal spindle driver output 40, and CN302 pin 1, 2, 3 from IC301 ?

  • Page 70: Track Servo

    5. TRACK SERVO Check IC201 pin Normal track error Track on OK ? CD ? 110, IC101 pin 1, signal ? 48 (Figure 8) Check IC201 pin DVD ? 110 (Figure 8) Check IC301 pin 9, Normal track actua- 23, 24, and CN101 tor driving signal ? pin 2, 3 (Figure 8) Continue...

  • Page 72: Circuit Diagrams

    CIRCUIT DIAGRAMS 1. CIRCUIT DIAGRAM_1...

  • Page 73: Circuit Diagram_2

    2. CIRCUIT DIAGRAM_2...

  • Page 74: Waveforms

    WAVEFORMS [ 1 ] [ 2 ] [ 3 ] SIN1 LOAD- LOAD- LOAD+ SIN2 LOAD+ DISC LOADING MOTOR DRIVING SIGNAL (IC302 PIN 2, 3) DISC UNLOADING MOTOR DRIVING SIGNAL (IC302 PIN 2, 3) SLED MOTOR CONTROL SIGNAL (IC301 PIN 6, 7) [ 4 ] [ 5 ] [ 6 ]...

  • Page 75: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. MD P.C. BOARD (TOP VIEW) (BOTTOM VIEW) 4-12 4-13...

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