Related Manuals for LG Flatron F900P
Summary of Contents for LG Flatron F900P
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Page 1: Color Monitor
COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-116 FACTORY MODEL: FB910G MODEL: F900P (FB910G-UL) CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 DESCRIPTION OF BLOCK DIAGRAM....12 SAFETY PRECAUTIONS ........3 ADJUSTMENT ............14 TIMING CHART ............4 TROUBLESHOOTING GUIDE ......16 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW..........24 CONTROL LOCATIONS ......... 8 REPLACEMENT PARTS LIST ......26 WIRING DIAGRAM .......... -
Page 3: Safety Precautions
SAFETY PRECAUTIONS SAFETY-RELATED COMPONENT WARNING! X-RADIATION There are special components used in this color monitor The only potential source of X-radiation is the picture tube. which are important for safety. These parts are marked However, when the high voltage circuitry is operating on the schematic diagram and the replacement properly there is no possibility of an X-radiation problem. -
Page 4: Timing Chart
TIMING CHART VIDEO SYNC H-MAX FACTORY PRESET MODE MODE MARK MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7 VESA Sync Polarity – – Frequency 43.269 53.674 68.677 91.146 93.750 106.250 106.27 µs Total Period 23.112 18.631 14.561... -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW COMP DSUB AC Power Socket USB port See Front Control Panel D-Sub Signal Connector Power Button Front Control Panel 1. Power Button Button Use these buttons to choose or adjust items in This button is used to turn the monitor ON and the on screen display. - Page 6 Universal Serial Bus Making use of USB (Universal Serial Bus)* USB(Universal Serial Bus) is an innovation in connecting your different desktop peripherals conveniently to your computer. By using the USB, you will be able to connect your mouse, keyboard, printer, and other peripherals to your monitor instead of having to connect them to your computer.
- Page 7 Using the BNC connector with other types of video cards Using the BNC connectors with other types of video cards. Follow the example that fits your needs. 1. In case of using a composite sync on green video signal(Sync On Green): Connect each R,G and B video signals to BNC receptacles on the back of the monitor.
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Page 8: Control Locations
VR801 : High Voltage Adjustment (27kV) VR991 : B Adjustment (195V Line) -
Page 9: Wiring Diagram
Anode Cap DY Assembly Screw Degauss P101 P102 Purity P201- P701 (Control PCB) P901 P402 P702 P502 P501 P401... -
Page 10: Disassembly
1. TILT/SWIVEL & BACK COVER REMOVAL 1) Set the monitor face downward. 2) Carefully remove the Tilt/Swivel by pulling it upward. 3) Remove two screws (a). 4) Release the latch (c). (See Figure. 1 and Tip Spec.) 5) Slide the Back Cover away from the Front Cabinet of the monitor. Figure.1 Tip Spec. -
Page 11: Block Diagram
SIGNAL INPUT TRANS (T903) TRANS Control (IC902) TOP243Y... -
Page 12: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. 5. X-ray Protection. This is used for suppressing noise of power input line This circuit detects the rectified DC voltage comes flowing into the monitor and/or some noise generated from the FBT pin 4. If the high voltage of the FBT in this monitor flowing out through the power input reaches up to about 30kV (abnormal state), H.V control (IC801) detects. - Page 13 12. High Voltage Output & FBT (Flyback Transformer). 18. Static Convergence Control Circuit. The high voltage output circuit is used for generating This circuit corrects the convergence of the screen by pulse wave to the primary coil of the FBT (Flyback supplying the convergence signal to the 4H (STC) coil Transformer (T801)).
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Page 14: Adjustment
ADJUSTMENT GENERAL INFORMATION 3) EEPROM → ALL CLEAR → Y(Yes) command. All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes <Caution> Do not run this procedure unless the several adjustments may be required. EEPROM is changed. All data in EEPROM (mode Adjustment should be following procedure and after data and color data) will be erased. - Page 15 11) Display color 15,0 box full white pattern at mode 6. 6. Adjustment for Focus. 12) DRIVE ADJ command. 1) Display H character in full screen at Mode 6. 13) Set B-DRIVE to 97 at DRIVE of the alignment 2) Adjust two Focus control on the FBT that focus program.
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Page 16: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER-1 NO POWER (5V OFF) (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE OK? FUSE (F901) (F901) CHECK TROUBLE IN D901 BRIDGE DIODE BRIDGE DIODE? (D901) CHECK C908(+) VOLTAGE TROUBLE IN 145VDC at 110V input Q901, R908, R909, 310VDC at 220V input D907 CHECK... -
Page 17: No Power
2. NO POWER-2 NO POWER (5V ON) (POWER INDICATOR ON) CHECK TROUBLE IN IC901 PIN 7 Q903, IC904 18V ? CHECK IC901 PIN 6 TROUBLE IN IC901 WAVEFORM ? CHECK Q901 DRAIN (T901 PIN 9) TROUBLE IN Q901 WAVEFORM? CHECK D971, D972, D973, D974, D975, IC971... - Page 18 3. NO CHARACTER NO CHARACTER TROUBLE IN CHECK P102, P301, SIGNAL IC302 PIN 5, 6, 7 ? CABLE, PC SIGNAL CHECK TROUBLE IN IC302 PIN 18, 19, 20, IC302, P302 PIN 9 (5V) ? CHECK IC303 PIN 1, 3, 5 TROUBLE IN PIN10 (12V), IC303...
- Page 19 4. NO RASTER NO VIDEO (POWER INDICATOR GREEN or AMBER) CHECK AMBER POWER INDICATOR TROUBLE IN GREEN or AMBER ? P401, P101, P702, P302 SIGNAL CABLE GREEN CHECK ROTATE SCREEN SCREEN CONTROL CONTROL KNOB TO KNOB OF FBT CLOCKWISE or COUNTER CLOCKWIES CHECK VOLTAGE AT...
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Page 20: No Vertical Deflection
5. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 Pin 2 T901 15V LINE (15V) ? CHECK TROUBLE IN IC601 PIN 4 T901 -15V LINE (-15V)? CHECK TROUBLE IN IC701 PIN 12 IC701 (SAWTOOTH WAVE)? TROUBLE IN IC601, V-CIRCUIT... - Page 21 6. TROUBLE IN DPM STAND-BY/SUSPEND/ DPMS OFF MODE FAILURE CHECK CHECK PC, IC401 (MICOM) NO H / V SYNC SIGNAL (PC IS NOT GOING INTO PIN 40, 41 (H/V INPUT) DPM MODE) SIGNAL? INPUT H/V SYNC CHECK TROUBLE IN IC401 PIN 9, 8 X401, IC401 WAVEFORM? CHECK...
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Page 22: No Degaussing
7. NO DEGAUSSING NO DEGAUSSING CHECK TROUBLE IN IC401 PIN 13 IC401 (MICOM) (5V)? CHECK TROUBLE IN Q999 COLLECTOR D999 VOLTAGE (0.5V)? CHECK TROUBLE IN P901? P901 CHECK TROUBLE IN RL901? RL901 TROUBLE IN TH901, DEGAUSSING COIL... - Page 23 8. TROUBLE IN OSD NO OSD CHECK TROUBLE IN IC301 PIN 4 P302 (5V) ? CHECK IC301 PIN 5 TROUBLE IN (NEGATIVE H-PULSE P302 COMES IN ?) CHECK IC301 PIN 10 TROUBLE IN (V-PULSE COMES IN?) P302 CHECK IC301 PIN 13, 14, 15 TROUBLE IN (IS THERE ANY SIGNAL IC301, IC401...
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Page 24: Exploded View
EXPLODED VIEW... -
Page 25: Exploded View Parts List
Ref. No. Part No. Description 3091TKC081B CABINET ASSEMBLY, FB910G BRAND 3090TKC075 89483 2423GG3E41E CDT(CIRC), M46QDG423X 05NPLD LG-PHILIPS Displays 107KHZ 29.1 mm 3809TKC045E BACK COVER ASSEMBLY, FB910G 3808TKC044 PFC/TCO99 3043TKK096A TILT SWIVEL ASSEMBLY, FB990G TKT064 FB990G 339-002J SCREW ASSY PHP+5*25 (FZMW1)+GW18... -
Page 26: Replacement Parts List
REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 27 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C603 0CE108EH618 1000UF KMG 25V M FL TP5 C791 0CBZTBU003R 123J 23.0*16.0*9.5*10.0 800V J C604 0CE108EH618 1000UF KMG 25V M FL TP5...
- Page 28 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C951 181-288B MKT 100V 104JTR PHS26104 D601 0DD100009DE RGP10G TP G.I DO204AL 400V 1A C952 0CE228EF630 2200UF KMG 16V M FM5 BULK...
- Page 29 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D999 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1 IC601 0ISG817200A TDA8172 ZD101 0DZ560009AG GDZJ5.6B TP GRANDE DO-34 500MW IC701 0IPRPPH005A TDA4841PS PHILIPS 32P,SDIP ST...
- Page 30 75 1/10W 5 D.R/TP Q621 0TR319809AA KTC3198-Y(KTC1815) TP KEC TO92 R111 0RD0332Q609 33 1/4W(3 5% TA52 Q705 0TR558900BA 2SC5589(LG,W/M) BK TOSHIBA TO3 R112 0RH0752D622 75 1/10W 5 D.R/TP Q721 0TR319809AA KTC3198-Y(KTC1815) TP KEC TO92 R113 0RD1000Q609 100 1/4W(3 5% TA52...
- Page 31 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R213 0RH1502D622 15K 1/10W 5 D.R/TP R343 0RD0332A609 33 OHM 1/2 W (7.0) 5% TA52 R214 0RH1502D622 15K 1/10W 5 D.R/TP...
- Page 32 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R606 0RN0151H509 1.5 1/2W 2 TA52 R760 0RD5600Q609 560 1/4W(3 5% TA52 R607 0RN0101H409 1.0 1/2W 1 TA52 R761 0RD2701Q609...
- Page 33 DATE: 2002. 7. 24. DATE: 2002. 7. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R856 0RD6801Q609 6.80K 1/4W(3 5% TA52 R972 0RD2200Q609 220 1/4W(3 5% TA52 R857 0RN2702F409 27K 1/6W 1% TA52 R973 0RC4703A609...
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Page 34: Pin Configuration
PIN CONFIGURATION M62501P /FP Teerminal Number and The facillty PIN CONFIGURATION(TOP VIEW) PIN NO. Symbol Functional Description PWM output terminal PWM OUT Power supply terminal Trigger Input terminal PWM OUT CAGC This pin is used to set oscillating frequency VREF CAGC This pin is used for AGC setting Output terminal of error signal... -
Page 35: Schematic Diagram
IIC-SDA IIC-SCL DDC-SDA DDC-SCL... -
Page 36: Printed Circuit Board
PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) 5. CONTROL BOARD (Component Side) 2. MAIN BOARD (Solder Side) 6. CONTROL BOARD (Solder Side) 7. VIDEO BOARD (Component Side) 8. VIDEO BOARD (Solder Side) 3. INTERFACE BOARD (Component Side) 4. INTERFACE BOARD (Solder Side)