IBM 9493-AG1 Service Manual Download Page 30

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LM2674 Simple Switcher® Power Converter High Efficiency 500mA Step-Down Voltage Regulator

FEEDBACK

3.3V, R2 =4.32k

5V, R2 = 7.83k

12V, R2 = 22.3k

ADJ,R2 = 0

Ω

R1 is OPEN

Gain

Compensation

Bias

Generator

1.21V

Referance

Bias

1.21V

3.2V

0.6V

RAMP

= 2.5k

260kHz

Oscillator

Freq. Shift

Reset

GM 2

GM 1

10k

15k

20mH*

–

1.21V

10nF

PWM
Comparator

GND

Control

Logic

Driver

Enable

500mA

Switch

VSWITCH

BOOTSTRAP

Thermal

Shutdown

SENSE

Current

Limit

ON/OFF

5V Internal

Regulator

Start

Pin Configuration

Block Diagram

Top View

Summary of Contents for 9493-AG1

Page 1: ...COLOR MONITOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL 9493 AW1 6bit 9493 AG1 6bit 6Bit Module Issue Date APRIL 2000 http www sharefx com ...

Page 2: ...r 15 0 0 714 Vp p 3 Input Impedance 75 Ω 3 3 Operating Frequency Horizontal 31 70 kHz Vertical 56 85 Hz 4 POWER SUPPLY 4 1 Power Adaptor Input AC 90 264V 50 60Hz 1 2A Output DC 24V 1 5A 4 2 Power Consumption 5 ENVIRONMENT 5 1 Operating Temperature 10 C 35 C 50 F 95 F Ambient 5 2 Relative Humidity 10 80 Non condensing 5 3 Altitude 0 10 000ft 3 657m 6 DIMENSIONS with TILT SWIVEL Width 401 3 mm 15 80...

Page 3: ... s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit within the module If the surface of panel become dirty please wipe it off with a softmaterial Cleaning with a dirty or rough cloth may damage the panel WARNING BE CAREFUL...

Page 4: ... 350 720 x 400 TEXT 640 x 480 640 x 480 640 x 480 640 x 480 800 x 600 800 x 600 800 x 600 800 x 600 800 x 600 832 x 624 MAC 1024 x 768 1024 x 768 1024 x 768 1024 x 768 Total Period E 800 449 900 449 800 525 864 525 840 500 832 509 1024 625 1056 628 1040 666 1056 625 1048 631 1152 667 1344 806 1328 806 1312 800 1376 808 Video Active Time A 640 350 720 400 640 480 940 480 640 480 640 480 800 600 800...

Page 5: ... 2 Power ON OFF Button Switches the monitors on and off 3 ENTER Button 1 Displays main OSD menu 2 Enters highlighted menus and submenus 3 Selects highlighted option 4 Arrow Key Moves the cursor to highlight icons or make adjustments 1 Brings up Contrast control OSD 2 Left and Right arrows pressed together bring up auto setup 5 Exit Button 1 Exits from menus sub menus 2 Exits from OSD 3 2 1 4 5 Fro...

Page 6: ...ion Changes the position of the OSD on the screen Reset Reset should return all available functions apart from language which should not change unless adjusted via the LANGUAGE menu fo their factory presets Icon Description H Position Moves the screen left and right V Position Moves the screen left and right Image Size This function displays the image in its original size or enlarged size so as to...

Page 7: ...WIRING DIAGRAM 7 CN1 CN2 P1 J5 CN3 J2 J3 J1 J4 J10 ...

Page 8: ... a 2 Remove four screws b 3 Remove the Back Cover Ass y b a J4 J2 c c c c Main Frame Power PCB Ass y Main PCB Ass y Control PCB Ass y a a a a b b b b 3 MAIN CONTROL POWER PCB ASSEMBLY REMOVAL 1 Remove nine screws a 2 Disconnect J4 and J10 3 Remove the Metal Rear 4 Disconnect J2 5 Remove seven screws b 6 Remove the Power PCB Ass y 7 Remove four screws c 8 Remove the Main PCB Ass y 10 Remove the Con...

Page 9: ...4 CABINET ASSEMBLY METAL REAR INVERTER PCB ASSEMBLY REMOVAL 1 Remove six screws a 2 Remove the Cabinet Ass y 3 Remove four screws b 4 Remove the Metal Rear 5 Disconnect CN2 and CN3 6 Remove the Inverter PCB Ass y 5 BACKLIGHT REMOVAL 1 Remove two screws a 2 Remove the Backlight from the LCD Module ...

Page 10: ...BLOCK DIAGRAM 10 POWER CORD D VI A to 15 pin D SUB Signal Cable POWER SUPPLY CONTROL PCB INVERTER PCB MAIN LOGIC PCB LCD MODULE P O W E R P C B System Block Diagram ...

Page 11: ...3 VD 3 3 VA H V Sync POL DET 5V 3 3V MEMORY 2M Byte X 3 ADDR DATA 10 16 RD WR 24 SOG Out I2C 5VST I2C REG 5V ST 3 3V Digital Video Processor MX88L281 System Controller MC68HC05BD32 DDC EEPROM 24C02 Sync Process M52347FP Switching MC14066 V sync2 H sync2 H sync3 H sync V sync V sync3 Clamp 5VST OSD Generation LSC3862DW REG 5V H sync H sync I2C G H sync Detect BLOCK DIAGRAM ...

Page 12: ...CAS RAS CS BA 4 Panel Link Circuit Panel link transmitter U16 delivers digital signal to the receiver inside LCD module by method of abstraction The abstracted signals are pairs of TX0 TX1 TX2 TXC of which voltage swing is 0 5V each Its swing is similar to LVDS Low Voltage Differential Signal Transmitter U16 gets signals of HSYNC OUT VSYNC OUT DEN CLKA ODD from U4 and outputs LVDS through TX pin W...

Page 13: ...tware 1 Adjustment for Factory Preset Mode 1 Run alignment program for 9493_6bit on the IBM compatible PC 2 Select EEPROM all clear command and Enter 3 Display cross hatch pattern at Mode 1 4 Select COMMAND PRESET START command 5 Select FOS DEFAULT command and Enter 6 Press Y key it will automatically save all FOS data to EEPROM 2 Adjustment for White Balance 1 Display color 0 0 pattern at Mode 13...

Page 14: ...E C2 C4 SHORTED CHECK U4 PIN5 VOLTAGE 5V NO NO POWER POWER INDICATOR OFF CHECK ADAPTER AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK J1 S VOLTAGE 24V NO CHECK U15 L9 CHECK U19 U20 U23 U24 Voltage 3 3V NO YES YES YES CHECK KEY CONTROL CONNECTOR ROUTINE ...

Page 15: ... 1 CHECK ADAPTER 2 CHECK U12 J4 PIN10 24V NO 1 CONFIRM BRIGHTNESS OSD CONTRL STATE 2 CHECK MICOM DIM ADJ PORT J2 PIN1 5V NO REPLACE INVERTER ASS Y CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL CONTACT PROBE TO CAUTION LABEL CAN YOU SEE PULSE AT YOUR SCOPE NO REPLACE CCFL LAMP IN THE LCD MODULE YES YES YES YES ...

Page 16: ...POWER PINS 3 3V NO CHECK U24 U1 PIN60 61 OSCILLATE AS 14 3M NO YES YES CHECK SOLDERING STATE OF U16 IS APPEAR LOW VOLTAGE SIGNAL AT J2 NO CHECK U12 TROUBLE IN CABLE OR LCD MODULE J2 PIN4 5V NO YES YES 3 NO RASTER OSD IS NOT DISPLAYED MX88L281 NO RASTER OSD IS NOT DISPLAYED ...

Page 17: ...INE D SUB U11 U18 PIN40 CHECK CKREF H SYNC INPUT U5 PIN40 NO CHECK CKREF INPUT CHECK COAST INPUT U5 PIN41 NO YES YES YES YES YES YES NO RASTER OSD IS DISPLAYED 4 NO RASTER OSD IS DISPLAYED AD9884 CHECK SIGNAL LINE FROM U14 PIN17 TO U5 PIN28 CHECK CLAMP INPUT H SYNC U5 PIN28 NO CHECK SIGNAL LINE FROM U5 PIN115 TO U1 PIN254 1024x768 85Hz 95MHz CHECK CLOCK INPUT 25MHz 95MHz SINEWAVE U5 PIN115 NO YES ...

Page 18: ...7 BA35 70 30 R64 C235 L24 D4 R66 R65 ZD1 BA8 BA9 140 130 R16 60 50 CA16 CA9 BA29 RA32 90 80 20 ZD2 U6 BA12 BA11 BA10 160 150 40 30 CA10 CA13 BA26 BA34 U5 100 10 5 1 J3 BA14 BA13 BA15 170 20 10 CA14 CA7 BA28 BA31 C67 C96 L3 120 110 C72 125 R60 D1 R63 C234 L6 D3 D2 BA16 BA17 U1 1 CA8 BA25 C1 C66 D6 R59 R62 C233 L5 J1 SOLDERING DIRECTION U7 BA3 C101 C181 BA1 210 200 BA37 BA38 230 220 BA39 R1 255 U3 C...

Page 19: ... C 1 2 1 C 1 6 C 1 9 C 1 4 C 1 8 C 8 1 C 7 9 R 1 8 R 1 9 C 1 1 C 7 0 C 7 7 C 7 6 R 1 4 1 C 1 1 1 C 1 1 5 C 1 1 2 C 9 8 C 9 7 C 1 0 2 R 8 R 7 C 9 R 1 7 R 1 0 R 1 1 R 9 R 6 C 1 2 C 6 8 C 7 5 C 6 9 C 7 1 C 1 0 9 C 1 0 8 C 1 0 5 C 1 0 4 C 1 0 7 C 1 0 6 C 8 C 4 R 5 C 6 C 7 C 1 0 C 2 3 0 C 2 2 9 C 1 8 2 C 1 8 0 C 1 0 0 R 4 R 3 C 2 3 1 L 4 C 1 1 3 C 1 8 3 R 3 8 R 1 2 6 C 2 3 2 C 1 9 9 C 2 0 0 R 5 0 C 5 6...

Page 20: ... 20 1 3 2 4 6 7 8 9 10 11 13 14 12 5 EXPLODED VIEW ...

Page 21: ...Description REAR COVER STEALTH BLACK REAR COVER PEARL WHITE SCREW COVER STEALTH BLACK SCREW COVER PEARL WHITE BACK COVER ASS Y STEALTH BLACK BACK COVER ASS Y PEARL WHITE METAL MAIN FRAME ASS Y POWER PCB ASS Y MAIN PCB ASS Y METAL REAR ASS Y INVERTER ASS Y BRACKET INVERTER SUPPORTER LCD MODULE CABINET ASS Y STEALTH BLACK CABINET ASS Y PEARL WHITE CONTROL PCB ASS Y CABLE COVER STEALTH BLACK CABLE CO...

Page 22: ...ESS TC 33PF 50V J NP0 2012 R TP C26 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C27 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C28 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C29 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C30 0CH6100K116 CAPACITOR CHIP CERAMIC LD LESS TC 10PF 50V D NP0 2012 R ...

Page 23: ... 0 1UF 50V K X 2012 R TP C89 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C90 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C91 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C92 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C93 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C94 0...

Page 24: ...ACITOR CHIP TANTALUM 4 7UF 16V M 3528 TP C223 0CH7106F621 CAPACITOR CHIP TANTALUM 10UF 16V M 3528MM TP C224 0CH3104K566 CAPACITOR CHIP CERAMIC LD LESS HD 0 1UF 50V K X 2012 R TP C227 0CH3103K516 CAPACITOR CHIP CERAMIC LD LESS HD 10000PF 50V K B 2012 R TP C229 0CH3103K516 CAPACITOR CHIP CERAMIC LD LESS HD 10000PF 50V K B 2012 R TP C230 0CH3103K516 CAPACITOR CHIP CERAMIC LD LESS HD 10000PF 50V K B 2...

Page 25: ...TP L2 6210TCE001E CORE CIRC BEAD HB 1M2012 800JT CERATEC 2012MM R TP L3 6210TCE001P CORE CIRC BEAD HB 1S2012 121JT CERATECH 2012MM R TP L4 6210TCE001G CORE CIRC BEAD HH 1M3216 501 CERATEC 3216MM R TP L5 6210TCE001E CORE CIRC BEAD HB 1M2012 800JT CERATEC 2012MM R TP L6 6210TCE001E CORE CIRC BEAD HB 1M2012 800JT CERATEC 2012MM R TP L7 6210TCE001G CORE CIRC BEAD HH 1M3216 501 CERATEC 3216MM R TP L8 6...

Page 26: ...CE002B CORE CIRC BEAD HB 4M3216 121JT CERATECH 3216MM R TP BA36 6210TCE002B CORE CIRC BEAD HB 4M3216 121JT CERATECH 3216MM R TP BA37 6210TCE002C CORE CIRC BEAD HB 4M3216 201JT CERATECH 3216MM R TP BA38 6210TCE002C CORE CIRC BEAD HB 4M3216 201JT CERATECH 3216MM R TP BA39 6210TCE002C CORE CIRC BEAD HB 4M3216 201JT CERATECH 3216MM R TP Q1 0TR162309CA TRANSISTOR KSC1623 TP SAMSUNG SOT23 NPN EPI SILICO...

Page 27: ...0D622 RESISTOR CHIP 100 1 10W 5 D R TP R61 0RH4700D622 RESISTOR CHIP 470 1 10W 5 D R TP R62 0RH0752D622 RESISTOR CHIP 75 1 10W 5 D R TP R63 0RH0752D622 RESISTOR CHIP 75 1 10W 5 D R TP R64 0RH0752D622 RESISTOR CHIP 75 1 10W 5 D R TP R65 0RH4701D622 RESISTOR CHIP 4 7K 1 10W 5 D R TP R66 0RH4701D622 RESISTOR CHIP 4 7K 1 10W 5 D R TP R67 0RH4700D622 RESISTOR CHIP 470 1 10W 5 D R TP R69 0RH1000D622 RES...

Page 28: ...K 1 10W 5 D R TP R141 0RH1000D622 RESISTOR CHIP 100 1 10W 5 D R TP X1 6202TST001A CRYSTAL SX 1 SUNNY SMS 14 31818MHZ 30PPM 18PF TP X2 6202TST001E CRYSTAL SX 1 SUNNY CHIP 24MHZ 30PPM 20PF BK J5 6612TBH001A JACK DIN TCS7547 01 401 HOSIDEN R A 4P LI571D LED1 0DL571300AA LED SPR571MVW3 TP ROHM GREEN RED 10 10MCD SW1 140 058E SWITCH TACT SKHV10910B LGEC NON 12V 20A HORIZENTAL 160G SW2 140 058E SWITCH T...

Page 29: ...PIN CONFIGURATION 29 AD9884A 100MSPS 140MSPS Analog Flat Panel Interface Functional Block Diagram Pin Configurations ...

Page 30: ...in Compensation Bias Generator 1 21V Referance Bias 1 21V 3 2V 0 6V VRAMP R2 R1 2 5k 260kHz Oscillator Freq Shift Reset GM 2 GM 1 10k 15k 2k 20mH 1 21V 10nF PWM Comparator GND Control Logic Driver Enable Enable 500mA Switch 6 VSWITCH C BOOTSTRAP 8 1 Thermal Shutdown RSENSE Current Limit 5 ON OFF 5V 7V 5V Internal Regulator Start UP Pin Configuration Block Diagram Top View ...

Page 31: ... H DET V STATE CLAMP SW GREEN IN V TIME GATE SW GND V DET V IN 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 COMP H IN H STATE COMP H DET V STATE CLAMP SW GREEN IN V TIME GATA SW VD OUT V S S OUT GND V DET V IN H POL CLAMP OUT VCC HD OUT HD OUT V S S IN CLAMP GET EDGE SW CLAMP TIMING Y POL H DET V SYNC SEP V TIME GATE LOGIC H SHAPE V SHAPE V DET SYNC SEP LOGIC Pin Configuration Block Diagram ...

Page 32: ... 32 LM2596 Simple Switcher Power Converter 150kHz 3A Step Down Voltage Regulator BLOCK DIAGRAM Side View Top View ...

Page 33: ...2 3 ANODE 1 3 2 1 Vcc 2 GND 3 OUT 1 3 2 1 3 2 KDS226 1 2 3 1 CATHODE 1 2 ANODE 2 3 ANODE 1 CATHODE 2 1 3 2 KSC1623 1 BASE 2 EMITTER 3 COLLECTOR 2 3 1 0CH7106F621 10uF 16V 0CH7227F661 220uF 6 3V 0CH7476F661 47uF 10V _ Regulator Schottky Diode Diode Diode Transistor Tantalum Capacitor MBRS130T3 MBRS190T3 1 2 1 2 ...

Page 34: ...SCHEMATIC DIAGRAM 34 1 AD9884 PRE AMP PLL ADC ...

Page 35: ... 35 2 VIDEO PROCESS ...

Page 36: ... 36 3 OUTPUT CONNECTOR ...

Page 37: ... 37 4 MEMORY ...

Page 38: ... 38 5 MICOM ...

Page 39: ... 39 6 POWER GEN ...

Page 40: ... 40 7 CONNECTOR JACKS ...

Page 41: ...Apr 2000 Printed in Korea P NO 3828TSO018E ...

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