LG StudioWorks N2200P Service Manual Download Page 24 | Manualshive

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8. TROUBLE IN OSD

CHECK

IC302 PIN 5

(NEGATIVE H-PULSE

COMES IN ?)

CHECK

IC302 PIN 14

(NEGATIVE V-PULSE

COMES IN?)

CHECK

IC302 PIN 17, 18, 19

(IS THERE ANY SIGNAL

WHEN OPERATING FRONT

CONTROL ?)

NO OSD

TROUBLE IN
IC301

TROUBLE IN
Q301, P303

TROUBLE IN
Q384, P303

TROUBLE IN
IC302, IC271

YES

YES

YES

NO

NO

NO

CHECK

IC302 PIN 4, 13

(5V) ?

TROUBLE IN
P303, D909

NO

YES

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Summary of Contents for StudioWorks N2200P

Page 1: ...e http biz LGservice com E mail http www LGEservice com techsup html CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL StudioWorks N2200P NB230A UA CHASSIS NO CA 94 FACTORY MODEL NB230A ID LABEL Model No ...

Page 2: ...solution 2048 x 1536 75Hz 4 4 Video Bandwidth 350 MHz 5 ENVIRONMENT 5 1 Operating Temperature 5 C 35 C 41 F 95 F Ambient 5 2 Relative Humidity 10 90 Non condensing 5 3 Altitude 5000 m 6 DIMENSIONS with TILT SWIVEL Width 503 mm 19 8 Depth 477 mm 18 8 Height 509 mm 20 4 7 WEIGHT with TILT SWIVEL Net Weight 31 3 kg 69 01lbs Gross Weight 35 5 kg 78 27lbs 8 USB USB standard Rev 1 1complied BUS powered ...

Page 3: ...ed 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...

Page 4: ...6 660 13 003 3 657 0 203 1 219 2 235 75 029 13 328 12 795 0 533 0 017 0 050 0 466 1024 x 768 75Hz Yes MODE 4 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 0 523 1024 x 768 85Hz Yes MODE 5 79 976 12 504 9 481 3 022 0 119 1 067 1 837 75 025 13 329 12 804 0 525 0 013 0 038 0 475 1280 x 1024 75Hz Yes MODE 6 91 146 10 971 8 127 2 844 0 406 1 016 1 422 85 024 11 761...

Page 5: ...adjust items in the on screen display REAR VIEW FRONT VIEW Front Control Panel HD B G R AC IN VD D SUB Front Control Panel Power ON OFF Button Power Indicator D Sub Signal Connector BNC Connector AC Power Socket 1 2 4 5 7 8 6 3 The Contrast and Brightness functions are also available in the On Screen Display OSD menu Button Button Bring up Contrast adjustment Bring up Brightness adjustment Button ...

Page 6: ...reen Display Control system A short example is quick and easy given below to familiarize you with the use of the controls The following section is an outline of the available adjustments and selections you can make using the OSD To make adjustments in the On Screen Display follow these step Example Note Monitor and PC s power switch should be ON with an image or prompt on the screen 1 Press the ME...

Page 7: ...u prefer among reddish or bluish or any color in between Set your own color levels PRESET TEMP RED GREEN BLUE Side Pincushion To correct a concave or convex bowing of the image Side Pincushion Balance To correct the balance of both sides bowing Parallelogram To correctly adjust the skew of the image Trapezoid To correct geometric distortion Top Corner Bottom Corner To correct an irregular distorti...

Page 8: ... manually demagnetize the screen to avoid showing incorrect images or colors This is to have the real color of the image This will automatically adjust your display image to the ideal settings for the current screen resolution size display mode This is to adjust the clearness of the screen It is recommended to use this to see movies or moving picture This item allows you to reduce the degree of mo...

Page 9: ...stream port of the Display to the downstream port of the USB compliant PC or another hub using the USB cable Computer must have a USB port 2 Connect the USB compliant peripherals to the downstream ports of the monitor USB downstream Ports connect the cables from USB compliant peripherals such as keyboard mouse etc To USB downstream port of the USB compliant PC or another hub cable NOTE To activate...

Page 10: ...nnect each R G and B video signals and composite sync signal to the BNC receptacles on the rear panel 3 In case of using a separate horizontal and vertical sync signal Connect each R G and B video signals and the horizontal and vertical sync signal to BNC receptacles on rear panel R G B Blue Green Red Blue Gray Bllack Green NOTE This package does not include the BNC connectors but you can purchase...

Page 11: ...CONTROL LOCATIONS 11 VR711 RASTER CENTERING VR501 High Voltage Adjustment VR951 B Adjustment 195V ...

Page 12: ... DIAGRAM 12 P661 P611 P101 P102 P201 P306 P305 P202 P207 P203 P951 P703 P702 P631 P820 P952 P904 P901 P903 P104 P103 P303 Anode Cap Degaussing Coil to P611 P704 P601 P701 P651 to P631 to P651 to P661 to P601 ...

Page 13: ...K TRANS T501 80V R G B R G BIAS 210V 15V V SAW H SYNC V SYNC LED DEG STBY SUS Control panel R G SMPS Sub T901 5V 6 3V IIC SDA IIC SCL STC Control IC261 IIC SDA IICC SCL DDC SDA DDC SCL EW H DRV SDA SCL IIC SDA IICC SCL IIC SIGNAL X RAY H V DETECT FBT DRIVE SWITCHING Q515 516 H drive Trans B CONTROL Q701 702 Q703 D D DRIVE IC402 DF H CENTERING COIL 210V DUMY FBT T702 195V H drive Trans T701 F V DF ...

Page 14: ...output voltage to the gate of switching FET Q525 It stops operating primary circuit of the FBT T501 and high voltage is not be generated In the normal state the high voltage is about 27kV 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 the D sub to the Micom IC271 2 The Micom IC271 distin...

Page 15: ...e tilt coil which is attached to the CRT near the deflection 19 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 CRT near the deflection 20 Moiré Reduction Circuit This circuit reduce interference between the periodical display pattern and the CRT s slot or dot The positions of eve...

Page 16: ...ow keys to center of the screen 8 Adjust H SIZE as arrow keys to 390 2mm 9 Adjust H POSITION as arrow keys to center of the screen 10 Adjust SIDE PIN Side Pincushion as arrow keys to be the best condition 11 Adjust TRAPEZOID as arrow keys to be the best condition 12 Adjust TILT as arrow keys to be the best condition 14 Save of the Mode 15 PRESET EXIT Y Yes command 4 Adjustment for White Balance an...

Page 17: ...E 1 NO POWER NO POWER POWER INDICATOR OFF TROUBLE IN D901 TROUBLE IN FUSE F901 TROUBLE IN IC902 CHECK FUSE OK CHECK C905 VOLTAGE 400VDC AT INPUT VOLTAGE 220VAC NO YES YES NO CHECK Q901 DRAIN WAVEFORM SQUARE WAVE COMES OUT YES ...

Page 18: ... 2 5V CHECK IC301 PIN 1 3 6 CHECK IC301 PIN 25 27 29 TROUBLE IN P301 5V 12V LINE TROUBLE IN PC SIGNAL SIGNAL CABLE IC2231 TROUBLE IN IC301 TROUBLE IN CDT SOCKET NO YES NO NO YES YES CHECK R G B CATHODE VOLTAGE TROUBLE IN IC303 NO YES NO CHARACTER ...

Page 19: ... D951 CATHODE 28V D957 CATHODE 80V D959 CATHODE 15V D958 CATHODE 15V IC952 OUT 12V CHECK IC271 MICOM PIN 5 5V IC201 PIN 16 12V ROTATE SCREEN CONTROL KNOB TO CLOCKWISE TROUBLE IN IC271 MICOM IC201 T BASE TDA4856 TROUBLE IN SECONDARY CIRCUIT OF T901 T902 TROUBLE IN PRIMARY CIRCUIT OF T901 T902 TROUBLE IN D SUB 5 BNC SIGNAL CABLE ORANGE MIN Counter clockwise GREEN OK YES NO YES NO ...

Page 20: ...V DEFLECTION ONE HORIZONTAL LINE CHECK IC601 PIN 2 15V CHECK IC601 PIN 4 12V TROUBLE IN T901 PIN 18 TROUBLE IN T901 PIN 17 TROUBLE IN IC601 VERTICAL OUTPUT CIRCUIT NO NO YES YES CHECK IC201 PIN 12 SAWTOOTH WAVE TROUBLE IN IC201 NO YES ...

Page 21: ...ODE TROUBLE IN X201 IC271 TROUBLE IN IC271 TROUBLE IN IC905 IC953 Q952 TROUBLE IN T901 or PC NO H V SYNC SIGNAL INPUT H V SYNC NO NO NO DPMS TABLE Mode Item NORMAL STAND BY SUSPEND OFF H V SYNC ON ON OFF ON ON OFF OFF OFF LED GREEN ORANGE ORANGE ORANGE VIDEO NORMAL OFF 0V OFF 0V OFF 0V YES YES CHECK B LINE 12V 15V 80V 5V TROUBLE IN R955 NO YES STAND BY SUSPEND OFF MODE FAILURE ...

Page 22: ...IN 17 5V CHECK Q902 COLLECTOR VOLTAGE 0 5V CHECK P901 CHECK RL901 TROUBLE IN IC271 MICOM TROUBLE IN Q271 TROUBLE IN P901 TROUBLE IN RL901 TROUBLE IN TH901 DEGAUSSING COIL NO DEGAUSSING BUTTON MUST BE PRESSED NO NO NO NO YES YES YES YES ...

Page 23: ...N TROUBLE IN P661 TILT COIL CONNECTOR TILT COIL NO TILT ROTATION TROUBLE IN D958 TROUBLE IN D959 CHECK IC651 PIN 8 VOLTAGE 15V NO YES YES CHECK IC651 PIN 4 15V NO TROUBLE IN IC271 MICOM IC691 IC651 YES CHECK IC651 PIN 3 NO ...

Page 24: ...C302 PIN 14 NEGATIVE V PULSE COMES IN CHECK IC302 PIN 17 18 19 IS THERE ANY SIGNAL WHEN OPERATING FRONT CONTROL NO OSD TROUBLE IN IC301 TROUBLE IN Q301 P303 TROUBLE IN Q384 P303 TROUBLE IN IC302 IC271 YES YES YES NO NO NO CHECK IC302 PIN 4 13 5V TROUBLE IN P303 D909 NO YES ...

Page 25: ... 25 11 16 19 20 18 19 17 17 16 15 14 13 6 7 1 2 3 4 A B C D E F 10 9 8 12 5 17 1 17 1 EXPLODED VIEW ...

Page 26: ... DEGAUSSING LX31 GET PURITY 61 5 OHM 760MM NB230A COIL DEGAUSSING LX31 GET 0 65 60TS NB230A FBT FLY BACK TRANSFORMER 1054A NB230A LG PHILIPS 21 FILTER CIRC EMI 03ME3G 3 DELTA FB915B COVER NB230A BACK ABS 8C358 PWB PCB ASSEMBLY SUB NB230A LED P SW TOTAL BRAND CA 94 METAL ASSEMBLY SHIELD BOTTOM NB230A BRACKET NB230A MAIN 85964 SCREW PTP 4x16 MSWR SCREW ASSY PVS 4 8 FZMY TW4 SHIELD ASSEMBLY TOP NB230...

Page 27: ... S AL LOC NO PART NO DESCRIPTION SPECIFICATION C531 0CN1020K519 1000P 50V K B TA52 C532 181 288D MKT 100V 473JTR PHS26473 C560 181 288B MKT 100V 104JTR PHS26104 C562 181 288M MKT 63V 105KTR PHS15105 C563 0CE106CK638 10UF SHL SD 50V M FM5 TP 5 C564 0CE335CK638 3 3UF SHL SD 50V M FM5 TP 5 C565 0CE106CK638 10UF SHL SD 50V M FM5 TP 5 C566 0CE475CK638 4 7UF SHL SD 50V M FM5 TP 5 C567 0CK10301510 0 01M ...

Page 28: ...ART NO DESCRIPTION SPECIFICATION C976 0CK1010K515 100PF 50V K B TR C977 0CE225CK638 2 2UF SHL SD 50V M FM5 TP 5 D401 0DS113309AA 1SS133 TP ROHM KOREA DO34 90 D403 0DS113309AA 1SS133 TP ROHM KOREA DO34 90 D404 0DR210009AB RL2AV 1 TP SANKEN A TMD 6 D405 0DS113309AA 1SS133 TP ROHM KOREA DO34 90 D406 0DS113309AA 1SS133 TP ROHM KOREA DO34 90 D407 0DS113309AA 1SS133 TP ROHM KOREA DO34 90 D408 0DS113309A...

Page 29: ... 03 25 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q408 0TR114009AB DTC114ES TP ROHM K SPT NPN Q501 0TR463300AB 2SC4633 LS CB11 BK SANYO L Q502 0TR463300AB 2SC4633 LS CB11 BK SANYO L Q503 0TR390409CA 2N3904 TP SAMSUNG TO92 NPN Q504 0TR390409CA 2N3904 TP SAMSUNG TO92 NPN Q521 0TR390409CA 2N3904 TP SAMSUNG TO92 NPN Q522 0TR319809AA KTC3198 Y KTC1815 TP KEC TO Q523 0TR320209AA KTC3202 Y KTC1959 TP ...

Page 30: ... 1 TA52 R610 0RN1501F409 1 5K 1 6W 1 TA52 R611 0RN5601F409 5 60K 1 6W 1 TA52 DATE 2002 03 25 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R612 0RD4302Q609 43K 1 4W 3 5 TA52 R613 0RN3302F409 33K 1 6W 1 TA52 R614 0RD6801Q609 6 80K 1 4W 3 5 TA52 R615 0RX0472J609 47 OHM 1 W 5 TA52 R616 0RD1000Q609 100 1 4W 3 5 TA52 R617 0RD0152A609 15 OHM 1 2 W 7 0 5 TA52 R618 0RD0622A609 62 OHM 1 2 W 7 0 5 TA52 R619...

Page 31: ...V K X 2012 R TP C303 0CH3104K566 0 1UF 50V K X 2012 R TP C304 0CN1040K949 0 1M 50V Z F TA52 C305 0CE107CF638 100UF SHL SD 16V M FM5 TP 5 C306 0CH6030K116 3PF 50V D NP0 2012 R TP C307 0CH6030K116 3PF 50V D NP0 2012 R TP C308 0CH6030K116 3PF 50V D NP0 2012 R TP C311 0CH3104K566 0 1UF 50V K X 2012 R TP C312 0CE227CF638 220UF SHL SD 16V M FM5 TP 5 C317 0CH3104K566 0 1UF 50V K X 2012 R TP C320 0CE336CF...

Page 32: ...010A LM2479NA NATIONAL SEMICONDUC Q301 0TR390409AE FAIRCHILD KST3904 LGEMTF TP DATE 2002 03 25 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q324 0TR320509AB KTC3205 Y KTC2236A TP KEC T Q361 0TR114009AB DTC114ES TP ROHM K SPT NPN Q371 0TR390409AE FAIRCHILD KST3904 LGEMTF TP Q384 0TR390409CA 2N3904 TP SAMSUNG TO92 NPN Q391 0TR320709AA KTC3207 KTC2482 TP KEC TO92 R301 0RH0102D622 10 1 10W 5 D R TP R...

Page 33: ...IPTION SPECIFICATION C274 0CE4764H638 47U SRA 25V M FM5 TP 5 C275 0CH6331K416 330PF 50V J NP0 2012 R TP C276 0CH6331K416 330PF 50V J NP0 2012 R TP C277 0CH3104K566 0 1UF 50V K X 2012 R TP C278 0CH3104K566 0 1UF 50V K X 2012 R TP C279 0CH3104K566 0 1UF 50V K X 2012 R TP C280 0CH3104K566 0 1UF 50V K X 2012 R TP C281 0CH3104K566 0 1UF 50V K X 2012 R TP C282 0CH3104K566 0 1UF 50V K X 2012 R TP C283 0C...

Page 34: ... NO PART NO DESCRIPTION SPECIFICATION R221 0RH1000D622 100 1 10W 5 D R TP R222 0RH1000D622 100 1 10W 5 D R TP R223 0RH1000D622 100 1 10W 5 D R TP R224 0RH1000D622 100 1 10W 5 D R TP R225 0RH0472D622 47 1 10W 5 D R TP R226 0RH4701D622 4 7K 1 10W 5 D R TP R227 0RN2202F409 22K 1 6W 1 TA52 R228 0RH1200D622 120 1 10W 5 D R TP R229 0RH1001D622 1K OHM 1 10 W 2012 5 00 D R230 0RH3301D622 3 3K 1 10W 5 D R ...

Page 35: ...5 C910 0CN1040K949 0 1M 50V Z F TA52 C911 0CN1040K949 0 1M 50V Z F TA52 C912 0CE107CH638 100UF SHL SD 25V M FM5 TP 5 C913 0CE227CK618 220U SHL 50V M FL TP5 C914 0CN1040K949 0 1M 50V Z F TA52 C915 0CE476EH638 47UF KMG 25V M FM5 TP 5 C918 0CE108EF618 1000UF KMG 16V M FL TP 5 C919 181 288B MKT 100V 104JTR PHS26104 C920 0CE476CF638 47UF SHL SD 16V M FM5 TP 5 C921 0CE477EF638 470UF KMG 16V M FM5 TP 5 C...

Page 36: ...O DATE 2002 03 25 S AL LOC NO PART NO DESCRIPTION SPECIFICATION SW137 140 058D SKHV10911A LGEC NON 12 20 HO SW138 140 058D SKHV10911A LGEC NON 12 20 HO T901 6170TMZ118A EE2525F 1MH V 10PIN NB235A C TH101 6322TB1031A TC310H39GBUEP THERMO 10k oh TH901 6322TB4R51A J503P61D4R5Q270S JAHWA 4 5 TH902 6322TA080AB TP8D15 DAEWOO 15 110 22 C501 0CE1074F638 100UF SRA SS 16V M FM5 TP 5 C502 0CE1074F638 100UF S...

Page 37: ...R TP R529 0RH1002D622 10K OHM 1 10 W 2012 5 00 R531 0RH0101D622 1 0 1 10W 5 TA R532 0RH1502D622 15K 1 10W 5 D R TP R533 0RH0222D622 22 1 10W 5 D R TP R534 0RH0222D622 22 1 10W 5 D R TP X501 6202TTB001A HC 49 U SUNNY E 6 000000MHZ R101 0RD3000Q609 300 1 4W 3 5 TA52 R102 0RD3000Q609 300 1 4W 3 5 TA52 D101 0DL591000AA L 59BL 1EGW BK KINGBRIGHT GR SW101 6600M000006 SPUJ19XSM011 POSTECH 30V DC 37 CONTR...

Page 38: ...V SIZE VERTICAL OSCILLATOR AND AGC V OUTPUT V LINEARITY V LINEARITY BALANCE SUPPLY AND REFERENCE H OUTPUT STAGE H C SYNC INPUT AND POLARITY CORRECTION PLL1 AND H POSITION HORIZONTAL OSCILLATOR PLL2 PARALLELOGRAM PIN UNBALANCE AND SOFT START I C BUS RECEIVER I C BUS REGISTERS VIDEO CLAMPING AND V BLANK OUTPUT ASYMMETRIC EW CORRECTION FOCUS HORIZONTAL AND VERTICAL B CONTROL 2 2 V sync TTL level 14 1...

Page 39: ...4 OUTPUT STAGE SUPPLY OUTPUT GROUND FLYBACK GENERATOR SUPPLY VOLTAGE INVERTING INPUT NON INVERTING INPUT POWER AMPLIFIER 4 5 7 THERMAL PROTECTION 1 2 3 6 FLYBACK GENERATOR INVERTING INPUT NON INVERTING INPUT OUTPUT GROUND SUPPLY VOLTAGE OUTPUT STAGE SUPPLY FLYBACK GENERATOR TDA8177 Block Diagram Pin Conection ...

Page 40: ...WF10 WF12 WF11 IIC SDA IIC SCL DDC SDA DDC SCL 40 41 SCHEMATIC DIAGRAM 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 ...

Page 41: ... SCL DDC SDA DDC SCL WF6 WF7 WF8 42 43 SCHEMATIC DIAGRAM 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 ...

Page 42: ... 44 45 PRINTED CIRCUIT BOARD 1 MAIN BOARD Component Side 2 MAIN BOARD Solder Side 3 VIDEO BOARD Component Side 4 VIDEO BOARD Solder Side ...

Page 43: ... CONTROL BOARD Component Side 7 INTERFACE BOARD Component Side 8 INTERFACE BOARD Solder Side 9 USB BOARD Component Side 10 USB BOARD Solder Side 11 SWITCH BOARD Component Side 12 SWITCH BOARD Solder Side 6 POWER CONTROL BOARD Solder Side ...

Page 44: ...Apr 2002 P NO 3828TSL084A Printed in Korea ...

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