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ImageQuest L70S Technical & Service Manual

Tft lcd color monitor
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L70S
TFT LCD Color Monitor
TECHNICAL SERVICE MANUAL

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Summary of Contents for ImageQuest L70S

  • Page 1 L70S TFT LCD Color Monitor TECHNICAL SERVICE MANUAL...

  • Page 2: Safety Precaution

    L70S Technical Service Manual Safety Precaution WARNING Service should not be attempted by anyone unfamiliar with the necessary precautions on this monitor. The followings are the necessary precautions to be observed before servicing. 1. When managing this monitor , cover with shield plate to avoid to scrach on LCD surface.

  • Page 3: Control Description

    Control Description Front View Power Switch / LED Indecator Support Modes Dot Clock V Frequency H Frequency Resolution (Hz) (kHz) (MHz) Polarity Polarity 720 x 400 28.322 70.1 31.5 640 x 480 25.175 59.9 31.5 640 x 480 31.500 75.0 37.5 40.000 800 x 600...

  • Page 4: Video Input Signal

    L70S Technical Service Manual Video Input Signal Recommended signal are shown below •Video Signal Video level : 0 to 700mV Polarity : positive Video Input : RGB separated Analog level Sync input : H-Sync(TTL level) V-Sync (TTL level) •Waveform Video input(R.G.B) 700mV •...

  • Page 5: Video Input Terminal

    Video Input Terminal A 15 Pin D-sub connector is used as the input signal connector Pin and input signals are shown in the table below. Pin Description SEPARATE SYNC/ SIGNAL DDC 1/2B PIN NO. GREEN BLUE RETURN RED GROUND GREEN GROUND BLUE GROUND LOGIC GROUND GROUND...

  • Page 6: Connecting With External Equipment

    L70S Technical Service Manual Connecting with External Equipment Cautions Be sure to turn off the power of your computer before connecting the monitor. LINE OUT --5--...

  • Page 7: Theory Of Operation

    Theory of Operation 1. AC/DC INVERTER Input voltage : DC 12V Input current : 2.0A(Max) Output current : 6.5mArms(TYP) Frequency(switching) : 47KHz(Max) Output power : 18W(TYP) On/off control voltage : 5.0V 2. AC/DC ADATOR This display device shall maintain the specified per formances in the range de scribed below Frequency : 50/60Hz Voltage : 90 - 264Vac RMS...
  • Page 8 L70S Technical Service Manual On Screen Controls & LED Indicator The menu for screen setting adjustment is located in the OSD and can be viewed in one of five languages OSD feature andmain funcrions are as follows: 1280x1024 H:63.9 V:60.0...

  • Page 9: Auto Color

    CLOCK PHASE PHASE Adjust the noise of the screen image. CLOCK Adjust the horizontal size of the entire screen image. MISCELLANEOUS RECALL Recall the saved color data. OSD TIMER You can set the displayed time of OSD Menu window on the screen by using this adjustment.
  • Page 10 L70S Technical Service Manual Getting Fine Picture Step 1. At first Display, a full screen, such as, Window's background or "H" character should be achieved by using Editor (ex: Notepad. exe) Step 2. Adjust the screen to the center of the Display(LCD), by using the top and bottom display controls.

  • Page 11: Specification

    Specification 17” Viewable diagonal SIZE Dot Pitch 0.264mm LCD Module 260 cd/m 2 (TYP) Brightness Response Time 16m- sec (Typ) Signal R.G.B Analog Input Connector 15 pin D-SUB Connector H-Freq 31.0kHz ~ 80.0kHz SYNC V-Freq 56.0Hz ~ 75Hz Area 337.92(H)X270.336(V)mm Display Color 262K Colors...

  • Page 12: Critical Parts Specification

    L70S Technical Service Manual Critical Parts Specification 1. LCD Module M170EN05(LTM170EU-L01, HT17E12-100 is a a-si TFT active matrix color liquid crystal comprising amorphous silicon TFT attached to each signal electrode, a driving circuit and a backlight. M170EN05(LTM170EX-L01, HT17E12-100 has a built-in backlight display area contains...
  • Page 13 2) CONNECTIONS Physical interface is described as for the connector on module. These connectors are capable of accommodating the following signals and will be following components Connector Name / Designation Interface Connector / Interface card Manufacturer JAE or compatible Type Parts Number FI-X30S-HF Mating Housing Part Number FI-X30S-H...
  • Page 14 L70S Technical Service Manual 4) Signal Description The module using a pair of LVDS receiver SN75LVDS82 (Texas Instruments) or compatible. LVDS is a differential signal technology for LCD interface and high speed data transfer device. Transmitter shall be SN75LVDS83(negative edge sampling)or compatible. The first LVDS port(RxOxxx)transmots odd pixels while the second LVDS port(RxExxxx)transmits even pixels.

  • Page 15: General Description

    MST9111 GENERAL DESCRI PTION The MST9111 is a high performance, and fully integrated graphics processing IC solution for LCD monitors with resolutions up to SXGA. It is configured with an integrated triple-ADC/PLL, a high qualit scaling engine, an on-screen display controller, a built-in output clock generator, and LVDS displa interface.
  • Page 16 L70S Technical Service Manual PIN DIA G RAM...

  • Page 17: Operating Conditions

    24LC08 24C08 24C08 24LC08 24LC08 Dual-In-Line SO package package (M8) 24C08 24LC08 TSSOP Pin Name A0, A1 N.C. Device Address inputs Ground Data I/O Clock input Write Protect + 5 V or + 3 V 3.0 ABSOLUTE MAXIMUM RATINGS Storage Temperature........-65°C to + 125°C Voltage with Respect to Ground....-0.3 to + 6.5 V NOTE: These are STRESS rating only.

  • Page 18: Electrical Characteristics

    L70S Technical Service Manual 5.0 ELECTRICAL CHARACTERISTICS DC ELECTRICAL CHARACTERISTICS (Vcc =5V +/- 10% ,MTV24C08/24LC08° F V cc =3V +/- 10% ,24LC08) MTV24C08/ 24LC08 24LC08 Units Symbol Parameter Conditions SCL = 100KHZ — — Operating Current CMOS Input Levels (Program)
  • Page 19 CAPACITANCE TA= 25∞ C , f=250KHZ Symbol Parameter Units Output capacitance Input capacitance A. C. Conditions of Test Input Pulse Levels Vcc x 0.1 to Vcc x 0.9 Input Rise and Fall times 10 ns Input and Output Timming level Vcc x 0.5 Output Load 1 TTL Gate and...

  • Page 20: Typical Applications

    L70S Technical Service Manual RC1117 RC1117X2.5 1A Adjustable/Fixed Low Dropout Linear Regulator Features Description • Low dropout voltage The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low • Load regulation: 0.05% typical dropout three-terminal regulators with 1A output current •...

  • Page 21: Absolute Maximum Ratings

    Pin Assignments Tab is Tab is Front View Tab is ADJ/GND 4-Lead Plastic SOT-223 = 15 C/W* ADJ/ ADJ/ 3-Lead Plastic TO-252 3-Lead Plastic TO-263 = 3 C/W* = 3 C/W* *With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., can vary from 30°C/W to more than 50°C/W.
  • Page 22 L70S Technical Service Manual Electrical Characteristics Operating Conditions: V 7V, T = 25°C unless otherwise specified. The denotes specifications which apply over the specified operating temperature range. Parameter Conditions Min. Typ. Max. Units Reference Voltage, V 1.5V 5.75V, 1.225 1.250 1.275...
  • Page 23 RC1117-3.3 1A Adjustable/Fixed Low Dropout Linear Regulator Features Description • Low dropout voltage The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low • Load regulation: 0.05% typical dropout three-terminal regulators with 1A output current • Trimmed current limit capability. These devices have been optimized for low voltage •...

  • Page 24: Pin Assignments

    L70S Technical Service Manual Pin Assignments Tab is Tab is Front View Tab is ADJ/GND 4-Lead Plastic SOT-223 = 15 C/W* ADJ/ ADJ/ 3-Lead Plastic TO-252 3-Lead Plastic TO-263 = 3 C/W* = 3 C/W* *With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., can vary from 30°C/W to more than 50°C/W.
  • Page 25 Electrical Characteristics Operating Conditions: V 7V, T = 25°C unless otherwise specified. The denotes specifications which apply over the specified operating temperature range. Parameter Conditions Min. Typ. Max. Units Reference Voltage, V 1.5V 5.75V, 1.225 1.250 1.275 10mA (-2%) (+2%) Output Voltage 10mA RC1117-2.5, 4V...
  • Page 26 L70S Technical Service Manual SI4435 PD- 93768A Si4435DY Æ HEXFET Power MOSFET Ultra Low On-Resistance P-Channel MOSFET = -30V Surface Mount Available in Tape & Reel = 0.020Ω DS(on) T o p V ie w Description Æ These P-channel HEXFET...
  • Page 27 Si4435DY Electrical Characteristics @ T = 25∞C (unless otherwise specified) Parameter Min. Typ. Max. Units Conditions Drain-to-Source Breakdown Voltage ñññ ñññ = 0V, I = -250µA (BR)DSS ∆V Breakdown Voltage Temp. Coefficient ñññ -0.019 ñññ V/∞C Reference to 25∞C, I = -1mA /∆T (BR)DSS...

  • Page 28: Block Diagram

    L70S Technical Service Manual TDA7496L 2W+2W AMPLIFIER WITH DC VOLUME CONTROL 2W+2W OUTPUT POWER = 8Ω @THD = 10% V = 14V ST-BY AND MUTE FUNCTIONS LOW TURN-ON TURN-OFF POP NOISE LINEAR VOLUME CONTROL DC COUPLED WITH POWER OP. AMP.

  • Page 29: Pin Connection

    ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit DC Supply Voltage Maximum Input Voltage Total Power Dissipation (T = 60∞ C) case ∞ C Ambient Operating Temperature 0 to 70 ∞ C Storage and Junction Temperature -40 to 150 Volume CTRL DC voltage PIN CONNECTION Rth with "on board"...
  • Page 30 L70S Technical Service Manual ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit µV Total Output Noise f = 20Hz to 22KHz Play, max volume µV f = 20Hz to 22KHz Play, max attenuation µV f = 20Hz to 22KHz...
  • Page 31 BLOCK DIAGRAM MODEL NAME : L70S 14.318Mhz Analog Scaler 17" DUAL LVDS (MST 9111) PANEL POWER & INVERTER Micro 24Mhz Controller WT61P4 AUDIO(TDA7496L) SPEAKER Image Quest Co., Ltd. Title <Title> BLOCK DIAGRAM Size Document Number <Doc> L70S Date: Monday, March 17, 2003...
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  • Page 38 ACTIVE LOW 22uF/16V 0.1uF/1608 SI4435 SO8 open open 1uF/1608 VCC2.5VD VCC5V RC1117S2.5T VOUT 22uF/16V 0.1uF/1608 0.1uF/1608 22uF/16V VCC3.3VD VCC3.3V_AV VCC3.3V_PL RC1117S3.3T VCC3.3VD_PL VOUT 22uF/16V 0.1uF/1608 Image quest Co., Ltd. Title L70S Size Document Number DC-DC Date: Tuesday, April 22, 2003 Sheet...
  • Page 39 GNDG0 VCPU 0.1uF/1608 GNDB0 ISP_DAT ISP_CLK R26 20 HSYNC0 VSYNC0 ST_DET0 open 4.7K 6.2V 6.2V 6.2V 220P 1N4148 0.1uF/1608 VCLK 24LC21 Option 6.2V 6.2V Image quest Co., Ltd. Title L70S Size Document Number VGA_INPUT Date: Tuesday, April 22, 2003 Sheet...
  • Page 40 HWRESET HWRESETZ EEPROM_CLK DDCROM_CLK EEPROM_DAT DDCROM_DAT VCC3.3VD_PL 3.3VD_PL 0.1uF/1608 VPLL open PWM0 GPLL 2.5VD AdjBACKLITE PWM1 TESTPIN 22pF open 10uF/16V 0.1uF/1608 14.318MHZ XOUT 22pF Image quest Co., Ltd. Title L70S Size Document Number MST9111 Date: Tuesday, April 22, 2003 Sheet...
  • Page 41 0.1uF/1608 ISP_CLK 24C08 EEPROM_CLK DIP_2.0P EEPROM_DAT MENU SELECT DOWN LED_G LED-G LED_O LED-O PWR-SW AUDIO/GL L/GND AUDIO/L AUDIO/L AUDIO/RG R/GND AUDIO/R AUDIO/R to KEY PAD Image quest Co., Ltd. Title L70S Size Document Number Date: Tuesday, April 22, 2003 Sheet...
  • Page 42 RXO2+ LVB5 R105 0 RXO2- LVB2 R106 0 RXO1+ LVB3 R107 0 RXO1- LVB0 RXO0+ R108 0 LVB1 RXO0- R109 0 CON30 LVB[0..9] LVB[0..9] Image quest Co., Ltd. Title L70S Size Document Number PANEL Date: Sheet Tuesday, April 22, 2003...
  • Page 43 0.47UF OUTR △ 1608/HB60 R/GND 330uF/16V STBY AUDIO/R VOLUME VOLUME AUDIO/L AUDIOJACK MUTE ▽ L/GND 1608/HB60 OUTL 10uF/16V 330uF/16V VAROUT_R EARPHONE JACK VAROUT_L 220/10V Image quest Co., Ltd. Title L70S Size Document Number AUDIO Date: Tuesday, April 22, 2003 Sheet...
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  • Page 50 COVER PANEL ABS 94 HB PART NO PART NAME DESCRIPTION QT'Y REMARK DRAWN PLANNED CHECKED APPROVED ANGLE TITLE J.S.WOO J.J.LEE J.S.KIM SCALE EXPLODED VIEW '03.05.09 '03.05.09 '03.05.09 SHEET L70S BRAND SIZE DWG NO. TAMP 031-2 FILE NAME : EXPLODED VIEW...

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