COLOR MONITOR SERVICE MANUAL
CHASSIS NO. : CA-114 (FB790G-UL) FACTORY MODEL: FB790G

MODEL:

monitor-man-uk

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CONTENTS

SPECIFICATIONS... 2 SAFETY PRECAUTIONS.. 3 TIMING CHART.. 4 OPERATING INSTRUCTIONS.. 5 CONTROL LOCATIONS... 7 WIRING DIAGRAM.. 8 DISASSEMBLY.. 9 BLOCK DIAGRAM.. 10 DESCRIPTION OF BLOCK DIAGRAM. 11 ADJUSTMENT.. 13 TROUBLESHOOTING GUIDE.. 15 EXPLODED VIEW.. 22 REPLACEMENT PARTS LIST.. 24 PIN CONFIGURATION.. 31 SCHEMATIC DIAGRAM... 32 PRINTED CIRCUIT BOARD.. 34

SPECIFICATIONS

1. PICTURE TUBE Size DefIection Angle Neck Diameter Phosphor Slot Pitch Face Treatment 3-2. Power Consumption : 17 inch (Flat Slot Mask) : 90 : 29.1 mm : P22 : 0.24 mm : W-ARASC (Anti-Reflective and Anti-Static Coating), Internal Anti-Glare
MODE MAX NORMAL (ON) STAND-BY SUSPEND OFF ON/ON OFF/ON ON/OFF OFF/OFF H/V SYNC POWER CONSUMPTION (USB) LED COLOR
less than 110W (130W) less than 83W (104W) less than 8W (30W)

GREEN GREEN ORANGE

less than 8W (30W) less than 1W (20W)

ORANGE

2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input Voltage Level : Low= 0.8V, High= 2.1V 2) Sync Polarity : Positive or Negative 2-2. Video Input Signal 1) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 2) Input Impedance 3) Video Color 4) Signal Format
: 0 ~ 0.7 Vp-p : 0 Vp-p : 0.467 Vp-p : 0.7 Vp-p : 75 : R, G, B Analog : Refer to the Timing Chart
4. DISPLAY AREA 4-1. Active Video Area : Max Image Size - 325.4 x 244.1mm (12.91" x 9.61") Preset Image Size - 310 x 230 mm (12.20" x 9.06") 4-2. Display Color : Full Colors 4-3. Display Resolution : 1600 Dots x 1200Lines 4-4. Video Bandwidth : 203MHz 5. ENVIRONMENT 5-1. Operating Temperature: 0C ~ 40C (32F ~ 103F) (Ambient) 5-2. Relative Humidity : 10% ~ 90% (Non-condensing) 5-3. Altitude : 10,000 ft 6. DIMENSIONS (with TILT/SWIVEL) Width : 415.0 mm (16.34") Depth : 432.0 mm (17.00") Height : 413.0 mm (16.25") 7. WEIGHT (with TILT/SWIVEL) Net Weight : 18 kg (39.68 lbs) Gross Weight : 20.5 kg (45.20 lbs) 8. USB Specifications USB Standard : Rev. 1.0 complied self-powered hub Downstream power supply : 500mA for each (MAX) Communication speed : 12 Mbps (Full), 1.5 Mbps (Low) USB port : 1 Upstream port 4 Downstream ports
2-3. Signal Connector 15 Pin D-Sub Connector 2-4. Scanning Frequency Horizontal : 30 ~ 96 kHz Vertical : 50 ~ 160 Hz 3. POWER SUPPLY AC 100~240V, 50/60HZ, 2.5A Max AC 200~240V, 50Hz, 1.5A Max.(PFC version)

SAFETY PRECAUTIONS

SAFETY-RELATED COMPONENT WARNING! There are special components used in this color monitor which are important for safety. These parts are marked on the schematic diagram and the replacement parts list. It is essential that these critical parts should be replaced with the manufacturer's specified parts to prevent X-radiation, shock, fire, or other hazards. Do not modify the original design without obtaining written permission from manufacturer or you will void the original parts and labor guarantee. CAUTION: No modification of any circuit should be attempted. Service work should be performed only after you are thoroughly familiar with all of the following safety checks and servicing guidelines. X-RADIATION The only potential source of X-radiation is the picture tube. However, when the high voltage circuitry is operating properly there is no possibility of an X-radiation problem. The basic precaution which must be exercised is keep the high voltage at the factory recommended level; the normal high voltage is about 26kV. The following steps describe how to measure the high voltage and how to prevent Xradiation. Note : It is important to use an accurate high voltage meter calibrated periodically. To measure the high voltage, use a high impedance high voltage meter, connect () to chassis and (+) to the CDT anode cap. Set the brightness control to maximum point at full white pattern. Measure the high voltage. The high voltage meter should be indicated at the factory recommended level. If the meter indication exceeds the maximum level, immediate service is required to prevent the possibility of premature component failure. To prevent X-radiation possibility, it is essential to use the specified picture tube.

SAFETY CHECK Care should be taken while servicing this color monitor because of the high voltage used in the deflection circuits. These voltages are exposed in such areas as the associated flyback and yoke circuits. FIRE & SHOCK HAZARD An isolation transformer must be inserted between the color monitor and AC power line before servicing the chassis. In servicing, attention must be paid to the original lead dress specially in the high voltage circuit. If a short circuit is found, replace all parts which have been overheated as a result of the short circuit. All the protective devices must be reinstalled per the original design. Soldering must be inspected for the cold solder joints, frayed leads, damaged insulation, solder splashes, or the sharp points. Be sure to remove all foreign materials. IMPLOSION PROTECTION All used display tubes are equipped with an integral implosion protection system, but care should be taken to avoid damage and scratching during installation. Use only same type display tubes.

CAUTION:

Please use only a plastic screwdriver to protect yourself from shock hazard during service operation.

TIMING CHART

FACTORY PRESET MODE
Sync Polarity Frequency Total Period

MODE 1

MODE 2

MODE 3

MODE 4

H O R I Z O N T A L

kHz s A B C D E F 43.269 23.112 17.778 5.334 1.556 1.556 2.222 Hz ms A B C D E F 85.008 11.763 11.093 0.670 0.023 0.069 0.X 480 85Hz
+ 53.674 18.631 14.222 4.409 0.569 1.138 2.702 + 85.061 11.756 11.178 0.578 0.019 0.056 0.X 600 85Hz Yes
+ 68.677 14.561 10.836 3.725 0.508 1.016 2.201 + 84.997 11.765 11.183 0.582 0.015 0.044 0.X 768 85Hz Yes
+ 91.146 10.971 8.127 2.844 0.406 1.016 1.422 + 85.024 11.762 11.235 0.527 0.011 0.033 0.X 1024 85Hz Yes
Video Active Time s Blanking Time Front Porch Sync Duration Back Porch Sync Polarity

s s s s

V E R T I C A L

Frequency Total Period

Video Active Time ms Blanking Time Front Porch Sync Duration Back Porch

ms ms ms ms

Resolution

Recall

OPERATING INSTRUCTIONS

FRONT VIEW REAR VIEW

USB port AC Power Socket See Front Control Panel Power Button D-Sub Signal Connector

Front Control Panel

1. Power Button This button is used to turn the monitor ON and OFF. 2. Power Indicator This Indicator lights up green when the monitor operates normally. If the monitor is in stand-by, suspend or DPMS off mode, this indicator color changes to amber. 3. MENU (or OSD) Button Use this button to enter or exit the on screen display.
Button Use these buttons to choose or adjust items in the on screen display.
Button Bring up Contrast adjustment

Button Bring up Brightness adjustment
The Contrast and Brightness functions are also available in the On Screen Display (OSD) menu. 5. SELECT (or SET) Button Use this button to enter a selection in the on screen display.

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. This will give you greater flexibility in setting up your system. USB allows you to connect chain up to 120 devices on a single USB port, and you can hot plug (attach them while the computer is running) or unplug them while maintaining Plug and Plug auto detection and configuration. This monitor has an integrated self-powered USB hub, allowing up to 4 other USB devices to be attached it.

USB connection (Option)

(1) Connect the upstream port of the monitor to the downstream port of the USB compliant PC or another hub using the USB cable. (2) Connect the USB compliant peripherals to the downstream ports the monitor. *USB(Universal Serial Bus) is supported WINDOWS98 and Higher.
USB Downstream Ports Connect the cables from USB compliant peripherals-such as keyboard, mouse, printer, scanner, etc.
USB Upstream Port To USB downstream port of the USB compliant PC or another hub cable

USB Upstream connector

USB Downstream connector

CONTROL LOCATIONS

VR801 : High Voltage Adjustment (26kV)
VR901 : B + Adjustment (192V Line)

WIRING DIAGRAM

P801 P453 P451

S+ SP901 P702

AC Socket

Signal Cable

DISASSEMBLY
1. TILT/SWIVEL & BACK COVER REMOVAL 1) Set the monitor face downward. 2) Carefully remove the Tilt/Swivel by pulling it upward. 3) Pressing the latch (a), Back cover by pushing it upward. (See Figure. 1) 4) Release the latch (c). (See Figure. 2 and Tip Spec.) 5) Slide the Back Cover away from the Front Cabinet of the monitor.

Figure. 1

Figure. 2

Ca bin et

Tip Spec. A(Width) : 5.0~15.0mm B(Depth) : 0.6~0.9mm C(Height) : 12.0mm
2. TOTAL CHASSIS ASSEMBLY REMOVAL 1) Set the monitor face downward. 2) Pressing the latch (a), Main Chassis by pushing it upward.

SIGNAL INPUT

BLOCK DIAGRAM

- 10 SUB TRANS (T903)

DESCRIPTION OF BLOCK DIAGRAM
1. Line Filter & Associated Circuit. This is used for suppressing noise of power input line flowing into the monitor and/or some noise generated in this monitor flowing out through the power input line. That is to say, this circuit prevents interference between the monitor and other electric appliances. 2. Degauss Circuit & Coil. The degauss circuit consists of the degaussing coil, the PTC (Positive Temperature Coefficient) thermistor (TH901), and the relay (RL901). This circuit eliminates abnormal color of the screen automatically by degaussing the slot mask in the CDT when turn on the power switch. When you need to degauss while using the monitor, select DEGAUSS on the OSD menu. 3. SMPS (Switching Mode Power Supply). This circuit works with power of 100~240V or 200~240V (50/60Hz) specially for PFC version. The operation procedure is as follows: 1) AC input voltage is rectified and smoothed by the bridge diode (D901) and the capacitor (C905). 2) The rectified voltage (DC voltage) is applied to the primary coil of the transformer (T901). 3) The control IC (IC901) generates switching pulse to turn on and off the primary coil of the transformer (T901) repeatedly. 4) Depending on the turn ratio of the transformer, the secondary voltages appear at the secondary coil of the transformer (T901). 5) These secondary voltages are rectified by each diode (D924, D926, D923, D922, D921, D920) and operate the other circuits. (Deflection, Video Amplifier, etc.) 4. Display Power Management Circuit. This circuit control power consumption of the monitor by detecting H and V sync signal. There are stand-by and suspend mode. When no horizontal or vertical sync signal input, the circuit consists of Q913, Q915 and IC401 control signal becomes stand-by and suspend mode. Its power consumption is below 8W. When no horizontal and vertical sync signal input, its power consumption is below 1W. 5. X-ray Protection. This circuit detects the rectified DC voltage comes from the FBT pin 4. If the high voltage of the FBT reaches up to about 30kV (abnormal state), H.V control (IC802) detects. It stops B+ voltage supplied to the FBT (T701), and high voltage is not be generated, (In the normal state, the high voltage is about 26kV.) 6. Micom(Microprocessor) Circuit. The operating procedure of Micom (Microprocessor) and its associated circuit is as follows: 1) H and V sync signal is supplied from Signal Cable to the Micom (IC401). 2) The Micom (IC401) distinguishes polarity and frequency of H and V sync. 3) The Micom controls each OSD function signals. (H-size, H-position, V-size, etc.) 4) The controlled data of each mode is stored in IC402. User can adjust screen condition by each OSD function. The data of the adjust screen condition is stored automatically. 7. Horizontal and Vertical Synchronous Processor. This circuit generates the horizontal drive pulse and the vertical drive pulse by taking sync-signal from Signal Cable. This circuit consists of the TDA4841(IC801) and the associated circuit. 8. Oscillating Circuit for D/D Converter. This circuit generates the pulse wave which has the horizontal period by taking the output of the TDA4841(IC801). 9. D/D (DC to DC) Converter. This circuit supplies DC voltage to the horizontal deflection output circuit by decreasing DC 192V which is the secondary voltage of the SMPS in accordance with the input horizontal sync signal. 10. D/D Drive & Convert Circuit. This circuit is used for supplying B + voltage to horizontal deflection output transistor (Q801). 11. Horizontal Deflection Output Circuit. This circuit makes the horizontal deflection by supplying the saw-tooth current to the horizontal deflection yoke.

- 11 -

12. High Voltage Output & FBT (Flyback Transformer). The high voltage output circuit is used for generating pulse wave to the primary coil of the FBT (Flyback Transformer (T701)). A boosted voltage (about 26kV) appears at the secondary of the FBT and it is supplied to the anode of the CDT. And there are another output voltages such as the dynamic focus voltage. 13. H-Linearity Correction Circuit. This circuit corrects the horizontal linearity for each horizontal sync frequency. 14. Vertical Output Circuit. This circuit takes the vertical wave from the TDA4841(IC801) and performs the vertical deflection by supplying the saw-tooth wave current from the TDA8172 (IC601) to the vertical deflection yoke. 15. Dynamic Focus Output Circuit. This circuit takes H and V parabola wave from the TDA4841(IC801), and amplifies these waves to offer to the FBT (T701). 16. H & V Blanking and Brightness Control. This circuit eliminates the retrace line by supplying a negative pulse to the G1 of the CDT. 17. Image Rotation (Tilt) Circuit. This circuit corrects the tilt of the screen by supplying the image rotation signal to the tilt coil which is attached to the CDT near the deflection.
18. Static Convergence Control Circuit. This circuit corrects the convergence of the screen by supplying the convergence signal to the 4H (STC) coil which is attached to the CDT near the deflection. 19. Moire Reduction Circuit This circuit reduce interference between the periodical display pattern and the CDT's slot (or dot). The positions of every other one dot video signal beams (red, green, and blue beam) are shifted finely, thus reducing interference. 20. OSD Circuit. This circuit is used for performing the OSD (OnScreen- Display) function. When a user selects the OSD Select/Adjustment control, the adjustment status displays on the screen. 21. Video Pre-Amp Circuit. This circuit amplifies the analog video signal from 00.7V to 0-4V. This circuit is operated by taking the clamp, R, G, B drives, and contrast signals from the Micom (IC401). 22. Video Output Amp Circuit. This circuit amplifies the video signal which comes from the video pre-amp circuit and amplified video signal is applied to the CDT cathode.

- 12 -

ADJUSTMENT

GENERAL INFORMATION

All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes several adjustments may be required. Adjustment should be following procedure and after warming up for a minimum of 30 minutes. Alignment appliances and tools. - IBM compatible PC. - Programmable Signal Generator. (eg. VG-819 made by Astrodesign Co.) - EPROM or EEPROM with saved each mode data. - Alignment Adaptor and Software. - Digital Voltmeter. - White Balance Meter. - Luminance Meter. - High-voltage Meter.

AUTOMATIC AND MANUAL DEGAUSSING The degaussing coil is mounted around the CDT so that automatic degaussing when turn on the monitor. But a monitor is moved or faced in a different direction, become poor color purity cause of CDT magnetized, then press DEGAUSSING on the OSD menu.
ADJUSTMENT PROCEDURE & METHOD
- Install the cable for adjustment such as Figure 1and run the alignment program on the DOS for IBM compatible PC. - Set external Brightness and Contrast volume to max position. 1. Adjustment for B+ Voltage. 1) Display cross hatch pattern at Mode 4. 2) Adjust C921 (+) voltage to 192V 0.2V with VR901. 2. Adjustment for High-Voltage. 1) Display cross hatch pattern at Mode 4. 2) Adjust CDT Anode voltage to 26kV 0.2kV with VR801. 3. Adjustment for Horizontal Raster Center. 1) Display cross hatch pattern at Mode 4. 2) Adjust the Back Raster should be center of the screen with SW801. 4. Adjustment for Factory Mode (Preset Mode). 1) Display cross hatch pattern at Mode 1~4. 2) Run alignment program for FB790G on the IBM compatible PC.
3) EEPROM ALL CLEAR Y(Yes) command. <Caution> Do not run this procedure unless the EEPROM is changed. All data in EEPROM (mode data and color data) will be erased. 4) COMMAND PRESET START Y(Yes) command. 5) DIST. ADJ. FOS. ADJ command. 6) Adjust H-POSITION as arrow keys to center of the screen. 7) Adjust H-SIZE as arrow keys to 310 2mm. 8) Adjust V-POSITION as arrow keys to center of the screen. 9) Adjust V-SIZE as arrow keys to 230 2mm. 10) Adjust TRAPEZOID as arrow keys to be the best condition. 11) Adjust TILT as arrow keys to be the best condition. 12) Display cross hatch pattern at Mode 4. 13) DIST. ADJ. BALANCE DATA command. 14) Adjust balance of Pin-Balance as arrow keys to be the best condition. 15) Adjust parallelogram as arrow keys to be the best condition. 16) Save of the Mode. 17) Save of the System. 18) Display from Mode 4 and repeat above from number 6) to 15). 19) COMMAND PRESET EXIT Y (Yes) command. 5. Adjustment for White Balance and Luminance. 1) Set the White Balance Meter. 2) Press the DEGAUSSING on the OSD menu for demagnetization of the CDT. 3) Display color 0,0 pattern at Mode 4. 4) COMMAND PRESET START Y(Yes) command. 5) Set Bightness and Contrast to max position. 6) COLOR ADJ. LUMINANCE command of the alignment program. 7) COLOR ADJ. BIAS ADJ. command of the alignment program. 8) Check whether blue color or not at R-BIAS and GBIAS to min position, Sub-Brightness to 90 position, B-BIAS to 75 position. If it's not blue color, the monitor must repair. 9) Adjust Screen control on the FBT to 0.15 0.02FL of the raster luminance. 10) Adjust R-BIAS and G-BIAS command to x=0.283 0.006 and y=0.298 0.006 on the White Balance Meter with PC arrow keys.

- 13 -

11) Display color 15,0 box pattern(70x70mm) at mode 4. 12) DRIVE ADJ command. 13) Set B-DRIVE to 100 at DRIVE of the alignment program. 14) Adjust R-DRIVE and G-DRIVE command to white balance x=0.283 0.003 and y=0.298 0.003 on the White Balance Meter with PC arrow keys. 15) Adjust SUB-CONTRAST command to 471FL of the raster luminance. 15) Display color 15,0 full white patten at Mode 4. 16) COLOR ADJ. LUMINANCE ABL command. 17) Adjust ABL to 32 1FL of the luminance. 18) Exit from the program.

6. Adjustment for Focus.

1) Display H character in full screen at Mode 4. 2) Adjust two Focus control on the FBT that focus should be the best condition.

- 14 -

TROUBLESHOOTING GUIDE

1. NO POWER

NO POWER (POWER INDICATOR OFF)

CHECK FUSE OK? (F901)

TROUBLE IN FUSE (F901)

CHECK D901 BRIDGE DIODE?

TROUBLE IN BRIDGE DIODE (D901)
CHECK C905(+) VOLTAGE 145VDC at 110V input 310VDC at 220V input

TROUBLE IN IC901

CHECK D924, D926, D923, D922, D921, D920 ?
TROUBLE IN D924, D926, D923, D922, D921, D920
TROUBLE IN Q912, Q913, Q915, Q914, IC905, IC904, IC902

- 15 -

2. NO CHARACTER

NO CHARACTER

CHECK IC302 PIN 5, 6, 7 ?
TROUBLE IN P301, SIGNAL CABLE, PC SIGNAL
CHECK IC302 PIN 18, 19, 20, PIN 6 (5V) ?

TROUBLE IN IC302, P302

YES CHECK IC303 PIN 1, 3, 5 PIN10 (12V), PIN 6 (80V) ? YES

TROUBLE IN IC303

CHECK R, G, B CATHODE VOLTAGE?

TROUBLE IN IC304

YES TROUBLE IN CDT SOCKET

- 16 -

3. NO RASTER
NO VIDEO (POWER INDICATOR GREEN or AMBER)
CHECK POWER INDICATOR GREEN or AMBER ?
TROUBLE IN P302 SIGNAL CABLE
CHECK SCREEN CONTROL KNOB OF FBT
ROTATE SCREEN CONTROL KNOB TO CLOCKWISE or COUNTER CLOCKWIES
CHECK VOLTAGE AT D924/D926 CATHODE (192V) D923 CATHODE (80V) IC904 OUT (12V) D921 CATHODE (6.3V)?
TROUBLE IN PRIMARY CIRCUIT OF T901
CHECK IC401 (MICOM) PIN 6 5V (HIGH), IC801 PIN 10 12V (HIGH)?
TROUBLE IN CDT SOCKET, BOARD
YES TROUBLE IN IC401 (MICOM), IC801

- 17 -

4. NO VERTICAL DEFLECTION
NO V-DEFLECTION (ONE HORIZONTAL LINE)
CHECK IC601 Pin 2 (15V) ?

TROUBLE IN T901 15V LINE

CHECK IC601 PIN 4 (-12V)?
TROUBLE IN T901 -12V LINE
CHECK IC801 PIN 12 (SAWTOOTH WAVE)?

TROUBLE IN IC801

TROUBLE IN IC601, V-CIRCUIT

- 18 -

5. TROUBLE IN DPM
STAND-BY/SUSPEND/ DPMS OFF MODE FAILURE
CHECK IC401 (MICOM) PIN 40, 41 (H/V INPUT) SIGNAL? INPUT H/V SYNC

NO H / V SYNC SIGNAL

CHECK PC, (PC IS NOT GOING INTO DPM MODE)
CHECK IC401 PIN 9, 8 WAVEFORM? YES

TROUBLE IN X401, IC401

CHECK IC401 PIN 6 (5V, HIGH)?

TROUBLE IN IC401

CHECK IC401 PIN 13, 14 ?
YES CHECK B+ LINE (12V, 15V, 80V, 5V) ?

TROUBLE IN Q913, Q915

DPMS TABLE
Mode TROUBLE IN T901 or PC
H / V SYNC ON / ON OFF / ON ON / OFF OFF / OFF
VIDEO NORMAL OFF(0V) OFF(0V) OFF(0V)
LED GREEN AMBER AMBER AMBER
NORMAL STAND-BY SUSPEND OFF

- 19 -

6. NO DEGAUSSING

NO DEGAUSSING

CHECK IC401 PIN 6 (5V)?

TROUBLE IN IC401 (MICOM)

CHECK Q920 COLLECTOR VOLTAGE (0.5V)? YES

TROUBLE IN D925

CHECK P901?

TROUBLE IN P901

CHECK RL901?

TROUBLE IN RL901

TROUBLE IN TH901, DEGAUSSING COIL

- 20 -

7. TROUBLE IN OSD

NO OSD

CHECK IC301 PIN 4 (5V) ?

TROUBLE IN P302

CHECK IC301 PIN 5 (NEGATIVE H-PULSE COMES IN ?)
CHECK IC301 PIN 18 (V-PULSE COMES IN?)
CHECK IC301 PIN 13, 14, 15 (IS THERE ANY SIGNAL WHEN OPERATING FRONT CONTROL ?) YES TROUBLE IN IC302

TROUBLE IN IC301, IC401

- 21 -

EXPLODED VIEW

- 22 -

EXPLODED VIEW PARTS LIST

Ref. No. 3 3809TKC042B 16 A 3313T17265C 6871TMT316B B 6871TMT316C C a b c 6871TVT287A 332-112F 1SZZTER001A 339-008C PWB(PCB) ASSEMBLY,MAIN, FB790G ALRUU BRAND CA-114 TOTAL (NON PFC) PWB(PCB) ASSEMBLY, VIDEO, FB790G TOTAL BRAND CA-114 SCREW,DRAWING, D3.5 L10.0 MSWR/FZMY +SW3.5+RW3.5 SCREW, D3.0 L10.0 MSWR/FZMY DOUBLE SCREW ASSY MP+3*10(FZMY)+SW3+RW3 MAIN TOTAL ASSEMBLY, FB790G BRAND CA-114 (NON PFC) PWB(PCB) ASSEMBLY,MAIN, FB790G ALEUU BRAND CA-114 TOTAL 3043TKK085A 339-002H 6140TC2014B 6871TST299A 6174T13010C 6200TJB001H 6850TA9006A 4930TKK031C 4950TKK368B 332-102E 6871TUT005F 4815TKT016B 332-102E 3313T17265B BACK COVER ASSEMBLY, FB790G 3808TKC041A 96KHZ (NON PFC) TILT SWIVEL ASSEMBLY, 2ND FLATRON 3042TKT060A (17") SCREW ASSY, PHP+5*20(FZMY)+GW18 NEW TYPE COIL,DEGAUSSING, - GET D-COIL,0.5*130TS,1410,WITH PURITY,FB770G PWB(PCB) ASSEMBLY,SUB, FB790G CONTROL TOTAL BRAND CA-114 FBT (FLY BACK TRANSFORMER), FQM19A008,EB990G SAMSUNG 19" FILTER(CIRC),EMC, 02MD1 DELTA BK W/O GND CABLE,D-SUB UL 2990-9C(7.5) AT 1560MM GRAY(85964) FB775G DM HOLDER, PCB FIX , PC+ABS METAL SHIELD FB790G 2ND FLATRON SCREW, PTP+4*16(MSWR/FZMY) PWB(PCB) ASSEMBLY,USB, FB995E ETC TOTAL BRAND SHIELD ASSEMBLY, TOP 2ND FLATRON SCREW, PTP+4*16(MSWR/FZMY) MAIN TOTAL ASSEMBLY, FB790G BRAND CA-114 Part No. 3091TKC074B Description CABINET ASSEMBLY, FB790G BRAND 068

2423GC3E41W CDT(CIRC), M41QBF423X 15NPLD LG-PHILIPS Displays 95KHZ 29.1 mm 3809TKC042E BACK COVER ASSEMBLY, FB790G 041 PFC,USB

- 23 -

REPLACEMENT PARTS LIST
CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE : S SAFETY Mark AL ALTERNATIVE PARTS

*S *AL LOC. NO.

PART NO.
DATE: 2002. 5. 14. DESCRIPTION / SPECIFICATION

*S *AL LOC. NO. C403

PART NO. 0CK2710K515 0CK2710K515 0CK2710K515 0CC0400K115 0CC0400K115 0CN1040K949 0CK1040K945 0CK1040K945 0CN1040K949 0CE106CK638 0CE106CK638 0CK1040K945 0CK1040K945 0CE106CK638 0CK1040K945 0CK1010K515 0CE1074F638 0CE1074F638 0CE4754K638 0CE1074F638 0CH6330K416 0CH6330K416 0CE1054K638 0CH3104K946 0CH3103K516 0CH3104K946 0CE1054K638 0CH3104K946 0CH3104K946 0CH3104K946 0CH3104K946 0CE1074F638 0CQ4721N419 0CE225CK638 0CN2220K519 0CN1040K949 181-288Q 0CK2220W515 0CE108CF618 0CE227EK618 0CE108CH618 181-288Q 0CQ1231N419 0CE475CN638 0CE106CK638 0CE227EN630 0CBZTBU003J 0CE336CN638 0CE106CK638
DATE: 2002. 5. 14. DESCRIPTION / SPECIFICATION 270P 50V K B 270P 50V K B 270P 50V K B 4P 4P TS TS TS

CAPACITORS

C201 C301 C302 C303 C304 C305 C306 C307 C308 C309 C310 C312 C313 C314 C315 C316 C317 C318 C319 C320 C321 C322 C323 C324 C325 C326 C327 C329 C330 C332 C333 C334 C336 C337 C340 C341 C342 C343 C345 C346 C347 C348 C349 C350 C355 C356 C401 C402 0CN1040K949 0CE477CF618 0CE107CF638 181-288B 181-288N 181-288N 0CN1040K949 0CN1040K949 0CN1040K949 181-288B 0CK1040K945 181-288B 181-288B 181-288B 181-288B 0CK10302940 0CE106CN638 181-288B 0CK10302940 0CE107CN630 0CE107EF638 0CN1040K949 0CE476EN618 181-288B 0CC3300K415 181-288B 181-288B 181-288B 181-288B 181-288E 181-288E 181-288E 0CK1010W515 181-288B 0CE227CF638 181-288B 0CC2200W415 0CK1010K515 0CK22202510 0CC47001505 0CC47001505 0CK1040K945 181-288E 0CK2210K515 0CK1040K945 0CN6810K519 0CC5600K415 0CE476CH638 0.1M 50V Z F TA52 470UF SHL 16V M FL TP5 100UF SHL,SD 16V M FM5 TP 5 MKT 100V 104JTR PHS26104 MKT 100V 103JTR PHS86103 MKT 100V 103JTR PHS86103 0.1M 50V Z F TA52 0.1M 50V Z F TA52 0.1M 50V Z F TA52 MKT 100V 104JTR PHS26104 0.1UF 50V Z F TR MKT 100V 104JTR PHS26104 MKT 100V 104JTR PHS26104 MKT 100V 104JTR PHS26104 MKT 100V 104JTR PHS26104 0.01M 2KV Z F S 10UF SHL,SD 100V M FM5 TP 5 MKT 100V 104JTR PHS26104 0.01M 2KV Z F S 100U SHL 100V M FM5 100UF KMG 16V M FM5 TP 5 0.1M 50V Z F TA52 47UF KMG 100V M FL TP 5 MKT 100V 104JTR PHS26104 33P 50V J NP0 TP MKT 100V 104JTR PHS26104 MKT 100V 104JTR PHS26104 MKT 100V 104JTR PHS26104 MKT 100V 104JTR PHS26104 MKT 100V 474JTR PHS 26474 MKT 100V 474JTR PHS 26474 MKT 100V 474JTR PHS 26474 100P 500V K B TS MKT 100V 104JTR PHS26104 220UF SHL,SD 16V M FM5 TP 5 MKT 100V 104JTR PHS26104 22PF 500V J NP0 TR 100PF 50V K B TR 2200P 2KV K B S 47PF 1KV K SL TR 47PF 1KV K SL TR 0.1UF 50V Z F TR MKT 100V 474JTR PHS 26474 220P 50V K B TS 0.1UF 50V Z F TR 680P 50V K B TA52 56P 50V J NP0 TP 47UF SHL,SD 25V M FM5 TP 5 C404 C405 C406 C407 C408 C410 C417 C418 C452 C453 C454 C455 C456 C457 C459 C501 C502 C503 C504 C505 C506 C507 C508 C509 C510 C511 C512 C513 C514 C515 C516 C601 C602 C603 C604 C605 C606 C608 C610 C611 C615 C616 C619 C701 C702 C704 C705 C707

Q701 Q704 Q705 Q706 Q707 Q708 Q721 Q722 Q723 Q724-L Q725-R Q771 Q801 Q802 Q803 Q806 Q807 Q808 Q810 Q832 Q833 Q834 Q836 Q837 Q838 Q839 Q841 Q842

- 27 -

*S *AL LOC. NO. Q843 Q844 Q901 Q903 Q912 Q913 Q914 Q915 Q920
PART NO. 0TR114009AB 0TR114009AB 0TFFN10003C 0TR319809AA 0TR127309AA 0TR319809AA 0TR928009AB 0TR319809AA 0TR319809AA
DATE: 2002. 5. 14. DESCRIPTION / SPECIFICATION DTC114ES TP ROHM-K SPT NPN DTC114ES TP ROHM-K SPT NPN INFINEON SPA07N60C3(E8153) ST KTC3198-Y(KTC1815) TP KEC TO92 KTA1273-Y(KTA966A) TP KEC TO92 KTC3198-Y(KTC1815) TP KEC TO92 KSA928A-Y TP SAMSUNG TO92L PNP KTC3198-Y(KTC1815) TP KEC TO92 KTC3198-Y(KTC1815) TP KEC TO92
*S *AL LOC. NO. R335 R336 R337 R338 R339 R340 R341 R342 R343 R344 R347 R359
PART NO. 0RD1000Q609 0RD1500Q609 0RD1800Q609 0RD1200Q609 0RD1004Q609 0RD1004Q609 0RD1004Q609 0RD0332A609 0RD0332A609 0RD0332A609 0RD1000Q609 0RD0102Q609 0RD3300Q609 0RD1000Q609 0RD4701Q609 0RD4701Q609 0RD1000Q609 0RD1000Q609 0RD2202Q609 0RD2202Q609 0RD2202Q609 0RD2202Q609 0RN4701F409 0RD4701Q609 0RD2001Q609 0RD4701Q609 0RD1000Q609 0RN2001F409 0RD2001Q609 0RD2001Q609 0RD4701Q609 0RD1000Q609 0RD1000Q609 0RD1801Q609 0RD1801Q609 0RD1301Q609 0RD1000Q609 0RD1001Q609 0RD4701Q609 0RD4701Q609 0RD1500Q609 0RD6201Q609 0RN0270G609 0RD0622A609 0RD4701Q609 0RD4701Q609 0RD1500Q609 0RD8201Q609 0RD8201Q609 0RD1500Q609 0RD2201Q609 0RX0472K607 0RD1001Q609 0RD1004Q609 0RD1000Q609 0RD1000Q609 0RH1502D622
DATE: 2002. 5. 14. DESCRIPTION / SPECIFICATION 100 1/4W(3 5% TA1/4W(3 5% TA1/4W(3 5% TA1/4W(3 5% TA52 1M OHM 1/4 W (3.4) 5% TA52 1M OHM 1/4 W (3.4) 5% TA52 1M OHM 1/4 W (3.4) 5% TAOHM 1/2 W (7.0) 5% TAOHM 1/2 W (7.0) 5% TAOHM 1/2 W (7.0) 5% TA1/4W(3 5% TA1/4W(3 5% TA1/4W(3 5% TA1/4W(3 5% TA52 4.70K 1/4W(3 5% TA52 4.70K 1/4W(3 5% TA1/4W(3 5% TA1/4W(3 5% TA52 22K 1/4W(3 5% TA52 22K 1/4W(3 5% TA52 22K 1/4W(3 5% TA52 22K 1/4W(3 5% TA52 4.70K 1/6W 1% TA52 4.70K 1/4W(3 5% TA52 2K 1/4W(3 5% TA52 4.70K 1/4W(3 5% TA1/4W(3 5% TA52 2K 1/6W 1% TA52 2K 1/4W(3 5% TA52 2K 1/4W(3 5% TA52 4.70K 1/4W(3 5% TA1/4W(3 5% TA1/4W(3 5% TA52 1.80K 1/4W(3 5% TA52 1.80K 1/4W(3 5% TA52 1.30K 1/4W(3 5% TA1/4W(3 5% TA52 1K 1/4W(3 5% TA52 4.70K 1/4W(3 5% TA52 4.70K 1/4W(3 5% TA1/4W(3 5% TA52 6.20K 1/4W(3 5% TA52 0.27 1/4W 5 TAOHM 1/2 W (7.0) 5% TA52 4.70K 1/4W(3 5% TA52 4.70K 1/4W(3 5% TA1/4W(3 5% TA52 8.20K 1/4W(3 5% TA52 8.20K 1/4W(3 5% TA1/4W(3 5% TA52 2.20K 1/4W(3 5% TAOHM 2 W 5% TA62 1K 1/4W(3 5% TA52 1M OHM 1/4 W (3.4) 5% TA1/4W(3 5% TA1/4W(3 5% TA52 15K 1/10W 5 D.R/TP

- 30 -

PIN CONFIGURATION

M62501P /FP

PIN CONFIGURATION(TOP VIEW)
Teerminal Number and The facillty

PIN NO. Symbol

PWM OUT
Functional Description PWM output terminal Power supply terminal Trigger Input terminal This pin is used to set oscillating frequency This pin is used for AGC setting Output terminal of error signal Input terminal of Over Voltage Protection Input terminal of Under Voltage Protection Postive Input terminal of Buffer Amp Output terminal of Buffer Amp Postive Input terminal of OP Amp Negative Input terminal of OP Amp Output terminal of OP Amp Dead time control terminal(Soft start function) Output terminal of reference voltage (5V) Ground terminal
Vcc TIN CAGC CAGC P.OUT OVP UVP BI BO IN+ INFB DTC VREF GND
PWM OUT Vcc TIN Cosc Cagc POUT OVP UVP

16 GND 15 VREF 14 DTC

M62501

13 FB 12 IN 11 IN +

10 BO 9 BI
Outlone P: 16P4 FP: 16P2S
TDA8172 Vertical Deflection Output Circuit
NON-INVERTING INPUT OUTPUT STAGE SUPPLY OUYPUT GROUND FLYBACK GENERATOR SUPPLY VOLTAGE INVERTING INPUT

Pin Configuration

M24C08

PSDIP8 (BN) 0.25mm Frame

Serial I2C BUS EEPROM

SYMBOL

DESCRIPTION
Chip Enable Input Serial Data Address Input/Output Serial Clock Write Control Supply Voltage Ground

SO8 (MN) 1 150mil Width

SDA SCL

TSSOP8 (DW) 169mil Width

WC Vcc

Logic Dirgram

- 31 -

SCHEMATIC DIAGRAM

DDC SCL DDC SDA
NOTICE Since this is a basic schematic diagram. The value of components and some partial connection are sucject to be changed for improvement without notice.

- 32 -

- 33 -

PRINTED CIRCUIT BOARD

1. CONTROL BOARD (Component Side) 2. CONTROL BOARD (Solder Side)
3. MAIN BOARD (Component Side)
4. MAIN BOARD (Solder Side)

- 35 -