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HP L1902 Service Manual

19” lcd monitor
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HP L1902 Service Manual
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SERVICE MANUAL

19" LCD Monitor
L1902
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY
REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE
CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF
PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
MANUFACTURE DATA ： Feb-29-2004
Page 1 of 69

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Summary of Contents for HP L1902

  • Page 1: Service Manual

    HP L1902 Service Manual SERVICE MANUAL 19” LCD Monitor L1902 THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

  • Page 2: Table Of Contents

    HP L1902 Service Manual Table of Contents Table of Contents ---------------------------------------------------------------------------------- 02 Revision List ---------------------------------------------------------------------------------------- 1.Product Feature --------------------------------------------------------------------- 2 LCD Monitor Description --------------------------------------------------------------- 3 Operation Instructions -------------------------------------------------------------------- 3.1 General Instructions ------------------------------------------------------------------ 3.2 Control Button ------------------------------------------------------------------------- 3.3 Adjusting The Picture ---------------------------------------------------------------- 4.
  • Page 3 HP L1902 Service Manual 6.3 Electrical Block Diagram ----------------------------------------------------------------16 6.3.1 Scalar Board ----------------------------------------------------------------------16 6.3.2 Inverter/Power Board -----------------------------------------------------------17 7. Schematic -----------------------------------------------------------------------------------------19 7.1 Scalar Board ----------------------------------------------------------------------------19 7.2 Inverter/Power Board --------------------------------------------------------------25 7.3 Key Pad Board -------------------------------------------------------------------------26 8. PCB Layout --------------------------------------------------------------------------------------27 8.1 Main Board -----------------------------------------------------------------------------27 8.2 Inverter/Power Board ----------------------------------------------------------------30...

  • Page 4: Revision List

    HP L1902 Service Manual Revision List Revision Date Change Description May-31-04 Add Panel spec and BOM of AU Panel model Page 4 of 69...

  • Page 5: Product Feature

    HP L1902 Service Manual 1.PRODUCT FEATURE 48.18cm(19”) a-si TFT Active matrix LCD panel, 0.294mm dot pitch Scalar chipset : gmZAN3SL ( or MST9111B) Microprocessor controlled scan technology 16 factory presets, 20 new modes Vertical refresh rate 50Hz to 75Hz; Horizontal frequency 30kHz to 83kHz...

  • Page 6: Operation Instructions

    HP L1902 Service Manual 3. OPERATION INSTRUCTIONS 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal performance.

  • Page 7: Adjust The Picture

    HP L1902 Service Manual 3.3 Adjust The Picture Brightness Adjust the brightness. Contrast Adjust the contrast Adjust the: Auto Adjustment: Adjusts the main settings and produces a stable, centered image. Image Control H-Position: horizontal position of the screen image. V-Position: vertical position of the screen image.

  • Page 8: Input/Output Specification

    HP L1902 Service Manual 4. Input/Output Specification 4.1 Input Signal Connector 4.1.1 Analog D-SUB Connector MNEMONIC SIGNAL Red Video Green Video Blue Video None Ground (DDC Return) Red GND Green GND Blue GND +5 V +5 V (from PC) Sync Ground...

  • Page 9: Factory Preset Display Modes

    HP L1902 Service Manual 4.2 Factory Preset Display Modes Pixel Horz Horz Vert Freq Vert Pixel Clk Preset Source Format Freq (KHz) Polarity (Hz) Polarity (MHz) 640 x 480 31.469 59.940 25.175 640 x 480 37.861 72.809 31.500 VESA 640 x 480 37.500...

  • Page 10: Inverter Max Brightness

    HP L1902 Service Manual 4.3.2 Inverter Max Brightness (Vadj:4.5v), LOAD=100KΩX4 (ROOM TEMPERATURE 25℃ ±4℃) ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK Input voltage 10.8 13.2 Input current 1700 1870 FOR 4LOAD Output Current Iout FOR 1 LOAD Frequency FOR 1 LOAD H.V open...

  • Page 11: Panel Specification (Lg E03/Au En04)

    HP L1902 Service Manual 5. PANEL SPECIFICATION 5.1 General Feature LG LM190E03 Active Screen Size 19.0 inches(481.84mm) diagonal Outline Dimension 404.2(H) 330.0(V) 20.0(D) mm(Typ.) ╳ ╳ Pixel Pitch 0.098*RGB(H) 0.294(V)mm ╳ Pixel Format 1280 horizontal By 1024 vertical Pixels. RGB stripe arrangement...

  • Page 12: Optical Characteristics

    HP L1902 Service Manual 5.2 Optical Characteristics LG LM190E03 Ta= 25°C, V =5.0V, f =60Hz ,D =54MHz Values Parameter Symbol Units Notes Contrast Ratio Surface Luminance, white cd/m² Luminance Variation δ WHITE Rise Time Response time Decay Time 0.639 0.342 0.297...
  • Page 13 HP L1902 Service Manual AU M190EN04 ITEM Unit Condition Min. Typ. Max. Horizontal (Right) CR=10 – (Left) Viewing Angle [degree] Vertical (Up) – CR=10 (Down) Contrast ratio Normal Direction – Raising Time – Response Time [msec] Falling Time – (Note 1) Rising + Failing –...

  • Page 14: Block Diagram

    HP L1902 Service Manual 6. Block Diagram 6.1 Monitor Exploded View Page 14 of 69...

  • Page 15: Software Flow Chart

    HP L1902 Service Manual 6.2 Software Flow Chart MCU initialize. Is the eeprom blank? Program the eeprom by default values. Get the PWM value of brightness from eeprom. Check the pin PANEL1 and PANEL2 to tell which panel to get with it.

  • Page 16: Electrical Block Diagram

    HP L1902 Service Manual 6.3 Electrical Block Diagram 6.3.1 Scalar Board Block Diagram Page 16 of 69...

  • Page 17: Inverter/Power Board

    HP L1902 Service Manual 6.3.2 Inverter / Power Board Block Diagram Inverter Block Diagram Page 17 of 69...
  • Page 18 HP L1902 Service Manual Power Block Diagram Page 18 of 69...

  • Page 19: Schematic

    HP L1902 Service Manual 7.SCHEMATIC 7.1 SCALAR BOARD 7.1.1 For LG Panel +gmZAN3/SL Project POWER BOARD REGULATOR -AIC3.3V AC-IN AC-IN +5.0V +3.3V REGULATOR -AIC1.8V +12V +12V +3.3V SCALER GMZAN3SL CON503 INPUT INTERFACE RED+ GREEN+ LVDSO[0-9] LVDSO[0-9] BLUE+ LVDSE[0-9] LVDSE[0-9] HSYNC...

  • Page 20: Panel Interface

    HP L1902 Service Manual 　 1/16W DB-RXD R102 C102 D102 56pF DB-TXD R103 　 1/16W C103 D103 56pF CN301 PC5V FB101 　 1/16W R101 　 1/16W C104 0.047uF RED+ gndR FB102 　 1/16W R104 　 1/16W C106 0.047uF GREEN+ CLK_DDC...
  • Page 21 HP L1902 Service Manual +12V CN201 ON_OFF R162 4.7K 　 1/16W PBIAS VCC12V VCC12V VCC5V VCC5V 982mA CON402(PITCH 2.00) R163 11/12 4.7K OHM-->NC C162 SOT-223 C161 C163 C164 0.1uF/16V 220uF/25V 0.1uF/16V +3.3V_VDD U501 R164 220uF/25V 1/16W AIC1117-33CY 　 147mA R165...
  • Page 22 HP L1902 Service Manual CN303 PC5V D327 MLL5232B 5.6V HSI-1 VSI-1 CLK_DDC CN301 DAT_DDC NC DB15 FB301 　 1/16W R302 　 1/16W C302 0.047uF VGA_CON D329 FB302 　 1/16W R303 　 1/16W C303 0.047uF MLL5232B 5.6V FB303 1/16W R304 1/16W C304 0.047uF...
  • Page 23 HP L1902 Service Manual PA[0..9] PA[0..9] LVA3P LVA3M CN503 LVACKP LVACKM LVB0M RXO0- RXO0+ LVB0P LVA2P LVB1M RXO1- RXO1+ LVB1P LVA2M LVB2M RXO2- RXO2+ LVB2P LVBCKM RXOC- RXOC+ LVBCKP LVA1P RXO3- RXO3+ LVB3M LVB3P LVA1M LVA0M RXE0- RXE0+ LVA0P LVA1M...
  • Page 24 HP L1902 Service Manual Page 24 of 69...

  • Page 25: Inverter/Power Board

    HP L1902 Service Manual 7.2 Power Board R919 　 1/8W R920 C913 　 1/8W 0.001uF D910 MOSPEC20100 L903 T901 1000uF/16V 73L-253-91L F902 PQ26/22.5 C914 5A/24V/1206 +12V R906 R904 R903 　 1/8W 　 1/8W C906 100K 　 1000uF/16V BD901 1500pF/1KV C915...

  • Page 26: Key Pad Board

    HP L1902 Service Manual FB101 L101 R114 Q101 　 1/16W Q102 R116 3.6K 1/16W 　 PMBS3904 BEAD R113 R115 AO4411 C108 C110 　 1/16W 　 1/16W 470uF/16V 470uF/16V 1000uF/16V C109 Q103 C101 D101 0.1uF/50V SR24 PMBS3906 IC101 2.7K　 R112 C113 C115 0.1uF/50V...

  • Page 27: Pcb Layout

    HP L1902 Service Manual 8. PCB Layout 8.1 Main Board 8.1.1 715L1241-D(For LG Panel +gmZAN3/SL Project) Page 27 of 69...
  • Page 28 HP L1902 Service Manual 8.1.2 715L1253-1-2 (For AU Panel +MST9111B Project) Page 28 of 69...
  • Page 29 HP L1902 Service Manual 8.2 Power Board 715L1142-C-LGH Page 29 of 69...

  • Page 30: Inverter/Power Board

    HP L1902 Service Manual 8.3 Key Board 9. Maintainability 9.1 Equipments and Tools Requirement 1.) Multi-meter. 2.) Oscilloscope. 3.) Pattern Generator. 4.) DDC Tool with an IBM Compatible Computer. 5.) Alignment Tool. 6.) LCD Color Analyzer. 7.) Service Manual. 8.) User Manual.

  • Page 31: Trouble Shooting

    HP L1902 Service Manual 9.2 Trouble Shooting 9.2.1 Main Board 1. NO SCREEN APPEAR A. For LG Panel +gmZAN3/SL Project Page 31 of 69...
  • Page 32 HP L1902 Service Manual B. For AU Panel +MST9111B Project Page 32 of 69...

  • Page 33: Power/Inverter Board

    HP L1902 Service Manual 9.2.2 Inverter / Power Board 1.) No power Check to CN902 Pin1 And Pin3=5V Check Interface board Check AC line volt 120V or 220V Check F901, Check BD901,Q901,IC901 Check the voltage of C905(+) Check bridge rectified circuit Check start voltage for the pin3 &...
  • Page 34 HP L1902 Service Manual 2.) W / LED , No Backlight    Check CON1 Pin1 =12V     Check adapter or MB       Check ON/OFF signal Check Interface board Check IC201 pin5&Pin3=5V Change Q205,Q207,Q206,ZD203 Check the pin7 of IC201=2.5V...

  • Page 35: Key Pad Board

    HP L1902 Service Manual 9.2.3 Key Board OSD is unstable or not working Is KeyPad Board Connect KeyPad Board connecting normally ? Is Button Switch normally ? Replace Button Switch Replace KeyPad Board Is KeyPad Board normally ? Check Main Board...

  • Page 36: White-Balance, Luminance Adjustment

    C、SRGB SRG color temp. parameter is x = 313±10, y = 329 ±10, Y = 210 ±10 cd/m 3、Into factory mode of HP L1902 A、Press MENU button during 2 seconds along with press Power button will activate the factory mode, then MCU will do AUTO LEVEL automatically. Meanwhile press MENU the OSD screen will located at LEFT TOP OF PANEL.

  • Page 37: Edid Content

    HP L1902 Service Manual 7、Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2 B、Adjust SGB color-temperature 1、Switch the chroma-7120 to RGB-Mode (with press “MODE” button ) 2、Switch the MEM .Channel to Channel 4( with up or down arrow on chroma 7120 ) 3、The LCD-indicator on chroma 7120 will show x = 313 ±10, y = 329 ±10,...

  • Page 38: Bom List

    HP L1902 Service Manual 12. BOM LIST 12.1 T980KGLHKHHPN 组成 插件位置 元件料号编号 品名规格 来源 用量 单位 CBPC980KGLHP CONVERSION BOARD FOR T9 KEPC780KC7 KEY BOARD PWPC1942LGH2 POWER BOARD FOR T980K*H 11L6036 1 SPACER SUPPORT SCC-24 15L5689 3 A GROUND CLAMP 15L8015 1...
  • Page 39 HP L1902 Service Manual 95L8018 30 36 LVDS CABLE M1L1140 6128 SCREW 4X6 M1L1730 6128 SCREW M3x6 Q1L 330 6120 SCREW M3X6mm Q1L 340 12 47 SCREW Q1L1030 8128 SCREW 705L980KB34018 LCD 后壳 ASS'Y 705L980KP87 01 AC SOCKET ASS'Y 750LLG90E03...
  • Page 40 HP L1902 Service Manual IC104 56L1133 56 M24C16-WMN6T/W Q101 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q102 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q103 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q105 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q104 57L 763 1 A03401 SOT23 BY AOS(A1) RP103 61L 125472 8 CHIP AR 8P4R 4.7K OHM+-...
  • Page 41 HP L1902 Service Manual R157 61L0603221 CHIPR 220 OHM+-5% 1/10W R158 61L0603221 CHIPR 220 OHM+-5% 1/10W R159 61L0603221 CHIPR 220 OHM+-5% 1/10W R160 61L0603221 CHIPR 220 OHM+-5% 1/10W R115 61L0603222 CHIPR 2.2K OHM+-5% 1/10 R116 61L0603222 CHIPR 2.2K OHM+-5% 1/10...
  • Page 42 HP L1902 Service Manual C156 65L0603102 32 1000PF +-10% 50V X7R C157 65L0603102 32 1000PF +-10% 50V X7R C115 65L0603104 12 0.1UF +-10% 16V X7R C116 65L0603104 12 0.1UF +-10% 16V X7R C119 65L0603104 12 0.1UF +-10% 16V X7R C123 65L0603104 12 0.1UF +-10% 16V X7R...
  • Page 43 HP L1902 Service Manual C117 65L0603330 31 33PF+-5% 50V NPO C104 65L0603473 32 CHIP 0.047UF 50V X7R C106 65L0603473 32 CHIP 0.047UF 50V X7R C108 65L0603473 32 CHIP 0.047UF 50V X7R C112 65L0603473 32 CHIP 0.047UF 50V X7R C113 65L0603473 32 CHIP 0.047UF 50V X7R...
  • Page 44 HP L1902 Service Manual 715L1242 C KEYBOARD R101 61L 60210252T CFR 1K OHM+-5% 1/6W R102 61L 60210252T CFR 1K OHM+-5% 1/6W ZD101 93L 3973B52T HZ6B2 ZD102 93L 3973B52T HZ6B2 ZD103 93L 3973B52T HZ6B2 ZD104 93L 3973B52T HZ6B2 RTV 胶 6 4502 RTV 胶...
  • Page 45 HP L1902 Service Manual C914 67L215L102 3K 1000UF+-20% 16V LONGLEA C915 67L215L102 3K 1000UF+-20% 16V LONGLEA EC 105 　 C907 67L305L470 7K 150UF/400V/105 　 C905 67L305S15114H E.C 105 　 CAP C905 67L305S15114K L903 73L 253 91 L CHOKE BY LI TA...
  • Page 46 HP L1902 Service Manual J901 95L 90 23 TIN COATED J902 95L 90 23 TIN COATED J903 95L 90 23 TIN COATED J904 95L 90 23 TIN COATED J905 95L 90 23 TIN COATED J906 95L 90 23 TIN COATED...
  • Page 47 HP L1902 Service Manual J943 95L 90 23 TIN COATED J944 95L 90 23 TIN COATED J945 95L 90 23 TIN COATED J946 95L 90 23 TIN COATED J947 95L 90 23 TIN COATED J948 95L 90 23 TIN COATED...
  • Page 48 HP L1902 Service Manual Q102 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q206 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q902 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q103 57L 417 6 PMBS3906/PHILIPS-SMT(06 Q903 57L 417 6 PMBS3906/PHILIPS-SMT(06 Q204 57L 600 40 MOSFET Q208 57L 600 40 MOSFET Q209...
  • Page 49 HP L1902 Service Manual R925 61L0805102 CHIPR 1K OHM +-5% 1/8W R203 61L0805103 CHIPR 10K OHM +-5% 1/8W R204 61L0805103 CHIPR 10K OHM +-5% 1/8W R207 61L0805103 CHIPR 10K OHM +-5% 1/8W R216 61L0805105 CHIP 1M OHM 5% 1/8W R223...
  • Page 50 HP L1902 Service Manual R910 61L1206000 CHIPR 0 OHM +-5% 1/4W R202 61L1206100 CHIPR 10 OHM+-5% 1/4W R904 61L1206105 CHIP 1MOHM 5% 1/4W R905 61L1206105 CHIP 1MOHM 5% 1/4W R906 61L1206105 CHIP 1MOHM 5% 1/4W R907 61L1206105 CHIP 1MOHM 5% 1/4W...
  • Page 51 HP L1902 Service Manual C917 65L0805104 32 CHIP 0.1UF 50V X7R C918 65L0805104 32 CHIP 0.1UF 50V X7R C211 65L0805105 37 CHIP 1UF 50V Y5V C213 65L0805105 37 CHIP 1UF 50V Y5V C219 65L0805105 37 CHIP 1UF 50V Y5V C222...
  • Page 52 HP L1902 Service Manual ZD202 93L 39S 24 T RLZTE-115.6B ROHM ZD203 93L 39S 24 T RLZTE-115.6B ROHM D101 93L2004 2 SR24/PANJIT-SMT 51L 200 1 散热油 52L6019 1 黄色绝缘胶带 Q901 57L 724 4 2SK2996 Q901 57L 724 4A STP9NK60ZFP 90L 415 1...

  • Page 53: T980Kaxdkhhpn

    HP L1902 Service Manual 95L8021 2507 HARNESS 96L 29 6 SHRINK TUBE UL/CSA 12.2 T980KAXDKHHPN 组成 插件位置 元件料号编号 品名规格 来源 用量 CBPC980KAXHP CONVERSION BOARD FOR T9 KEPC780KC7 KEY BOARD PWPC1942AUH2 POWER BOARD FOR T980K* 15L5689 3 A GROUND CLAMP 15L8015 2...
  • Page 54 HP L1902 Service Manual 95L8014 16 23 HARNESS 95L8014 16 24 HARNESS 95L8018 30 36 LVDS CABLE M1L 330 4128 SCREW M3X4 M1L 330 6128 SCREW M1L1140 6128 SCREW 4X6 M1L1730 6128 SCREW M3x6 Q1L 330 8120 SCREW 3X8mm Q1L 340 12 47...
  • Page 55 HP L1902 Service Manual ------- ----------------------- ----------------------- --------- ---- PARENT NO :AIC980KAXHP MAIN BOARD FOR T980K* ------- ----------------------- ----------------------- --------- ---- U401 56L 562 53 MST9111B PQFP-128 U202 56L 563 7 AIC1084-33CM U201 56L 585 7 RT9164-25CL U203 56L 643 5A...
  • Page 56 HP L1902 Service Manual R636 61L0603101 CHIPR 100 OHM +-5% 1/10 R203 61L0603102 CHIPR 1K OHM +-5% 1/10W R204 61L0603102 CHIPR 1K OHM +-5% 1/10W R315 61L0603102 CHIPR 1K OHM +-5% 1/10W R202 61L0603103 CHIPR 10K OHM +-5% 1/10 R206...
  • Page 57 HP L1902 Service Manual R402 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R403 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R616 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R619 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R501 61L0603681 CHIP 680 OHM 1/10W R301 61L0603750...
  • Page 58 HP L1902 Service Manual C424 65L0603104 32 CHIP 0.1UF 50V X7R C425 65L0603104 32 CHIP 0.1UF 50V X7R C429 65L0603104 32 CHIP 0.1UF 50V X7R C510 65L0603104 32 CHIP 0.1UF 50V X7R C511 65L0603104 32 CHIP 0.1UF 50V X7R C601 65L0603104 32 CHIP 0.1UF 50V X7R...
  • Page 59 HP L1902 Service Manual FB303 71L 59C300 30 OHM BEAD U601 87L 202 44 PLCC SMT CONN PD41C-441 D305 93L 39147 TZMC5V6-GS08 D306 93L 39147 TZMC5V6-GS08 D307 93L 39147 TZMC5V6-GS08 D308 93L 39147 TZMC5V6-GS08 D309 93L 39147 TZMC5V6-GS08 D327 93L 39147...
  • Page 60 HP L1902 Service Manual 77L 600 1GCJ TACT SWITCH TSPB-2 81L 12 1D GP ------- ----------------------- ----------------------- --------- ---- PARENT NO :AIK780KC7 KEY BOARD ------- ----------------------- ----------------------- --------- ---- 715L1242 1 R101 61L 60210252T CFR 1K OHM+-5% 1/6W R102 61L 60210252T...
  • Page 61 HP L1902 Service Manual C901 65L305M1022EM 1000PF +-20% 250VAC/400 C902 65L305M1022EM 1000PF +-20% 250VAC/400 C921 65L306M4722B2 4700PF +-20% 400VAC Y1 C108 67L 215102 3H 1000UF +-20% 16V C108 67L 215102 3K 1000UF +-20% 16V C914 67L215L102 3K 1000UF+-20% 16V LONGLEA...
  • Page 62 HP L1902 Service Manual Q102 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q206 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q902 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q103 57L 417 6 PMBS3906/PHILIPS-SMT(06 Q903 57L 417 6 PMBS3906/PHILIPS-SMT(06 Q204 57L 600 40 SP8M3FTB SOP-8 Q208 57L 600 40 SP8M3FTB SOP-8...
  • Page 63 HP L1902 Service Manual R203 61L0805103 CHIPR 10K OHM +-5% 1/8W R204 61L0805103 CHIPR 10K OHM +-5% 1/8W R207 61L0805103 CHIPR 10K OHM +-5% 1/8W R223 61L0805105 CHIP 1M OHM 5% 1/8W R231 61L0805105 CHIP 1M OHM 5% 1/8W R233...
  • Page 64 HP L1902 Service Manual R905 61L1206105 CHIP 1MOHM 5% 1/4W R906 61L1206105 CHIP 1MOHM 5% 1/4W R907 61L1206105 CHIP 1MOHM 5% 1/4W R921 61L1206301 CHIP 300OHM 1/4W R919 61L1206470 CHIP 47OHM 5% 1/4W R920 61L1206470 CHIP 47OHM 5% 1/4W R244...
  • Page 65 HP L1902 Service Manual C219 65L0805105 37 CHIP 1UF 50V Y5V C222 65L0805105 37 CHIP 1UF 50V Y5V C232 65L0805152 22 CHIP 0.005UF 25V X7R 08 C220 65L0805221 22 CHIP 220PF 25V X7R 0805 C244 65L0805225 17 CHIP 2.2UF 16V Y5V...
  • Page 66 HP L1902 Service Manual ------- ----------------------- ----------------------- --------- ---- PARENT NO : PWPC1942AUH2AI POWER BOARD FOR AI ------- ----------------------- ----------------------- --------- ---- CN901 6L 31500 EYELET C903 6L 31502 1.5MM RIVET C905 6L 31502 1.5MM RIVET L904 6L 31502 1.5MM RIVET...
  • Page 67 HP L1902 Service Manual J924 95L 90 23 TIN COATED J925 95L 90 23 TIN COATED J926 95L 90 23 TIN COATED J927 95L 90 23 TIN COATED J928 95L 90 23 TIN COATED J929 95L 90 23 TIN COATED...
  • Page 68 HP L1902 Service Manual JP204 95L 90 23 TIN COATED JP205 95L 90 23 TIN COATED R909 61L 17210052T 100HM 5% 1/4W R915 61L 17230352T 30K OHM5%1/4W R111 61L 21015352T 15KOHM 1% 1/6W R112 61L 60227252T 2.7KOHM 5% 1/6W FB101...
  • Page 69 HP L1902 Service Manual 51L 200 1 散热油 90L6081 1 HEATSHINK FOR U301 D910 93L 60228 MBR20100CT 20A 100V D911 93L 60228 MBR20100CT 20A 100V D910 93L 60237 SRF20100C D911 93L 60237 SRF20100C M1L1730 8128 SCREW M3x8 ------- ----------------------- -----------------------...

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