HP f1905 Series Service Manual
HP f1905 Series Service Manual

HP f1905 Series Service Manual

19” lcd monitor
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SERVICE MANUAL
19" LCD Monitor
f1905 Series
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: Jan-04-2005

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Summary of Contents for HP f1905 Series

  • Page 1 SERVICE MANUAL 19” LCD Monitor f1905 Series 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 f1905 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. Input/Output Specification ---------------- --------------------------------------------------- 4.1 Input Signal Connector --------------------------------------------------------------------09...
  • Page 3 HP f1905 Service Manual 6.3.2 Inverter/Power Board ----------------------------------------------------------------19 7. Schematic -----------------------------------------------------------------------------------------21 7.1 Main Board -----------------------------------------------------------------------------------21 7.2 Inverter/Power Board -------------------------------------------------------------------25 8. PCB Layout ---------------------------------------------------------------------------------------28 8.1 Inverter/Power Board ----------------------------------------------------------------------28 Keypad Board ------------------------------------------------------------------------------32 9. Maintainability ------------------------------------------------------------------------------------33 9.1 Equipments and Tools Requirements -------------------------------------------------33 9.2 Trouble Shooting ---------------------------------------------------------------------------34 9.2.1...
  • Page 4: Revision List

    HP f1905 Service Manual Revision List Revision Date Change Description Dec-29-04 Initial release...
  • Page 5: Product Feature

    HP f1905 Service Manual 1. Product Feature 48.3cm (19”) a-si TFT Active matrix LCD panel, 0.294mm dot pitch Scalar chipset: Genesis GM5321 Microprocessor controlled scan technology Both VGA analog and DVI-D digital signal video inputs supported 450:1 Typical Contrast Ratio and 250-nits typical Brightness...
  • Page 6: Operation Instructions

    HP f1905 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 on the side of the front panel. By changing these settings, the picture can be adjusted to your personal performance.
  • Page 7: Control Button

    HP f1905 Service Manual 3.2 Control Buttons...
  • Page 8: Adjusting The Picture

    HP f1905 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. H-Position: horizontal position of the screen image. Image Control V-Position: vertical position of the screen image.
  • Page 9: Input/Output Specification

    HP f1905 Service Manual 4. Input/Output Specification 4.1 Input Signal Connector 4.1.1 Analog D-SUB Connector MNEMONIC SIGNAL MNEMONIC SIGNAL Red Video +5 V +5 V (from PC) Green Video Sync Ground Blue Video None (Reserved for Factory Use) None DDC Data...
  • Page 10: Factory Preset Display Modes

    HP f1905 Service Manual DVI-D digital connector layout 4.2 Factory Preset Display Modes Factory Pre-set Video Input Modes Horizontal Vertical Frequency Pre-set Pixel Format Frequency (kHz) (Hz) 640 x 480 31.5 60.0 640 x 480 37.9 72.0 640 x 480 37.5...
  • Page 11: Power Supply Requirements

    HP f1905 Service Manual 4.3 Power Supply Requirements PARAMETER RANGE AC Input Voltage 90 to 265V AC Input Frequency 47 to 63 Hz Inrush Current 50A MAX AT 220VAC and 30A AT 120VAC Leakage Current 5 mA MAX at 120VAC Power consumption <70W...
  • Page 12 HP f1905 Service Manual AU M190EN04...
  • Page 13: Optical Characteristics

    HP f1905 Service Manual 5.2 Optical Characteristics CPT CLAA190EA03...
  • Page 14 HP f1905 Service Manual AU M190EN04...
  • Page 15: Block Diagram

    HP f1905 Service Manual 6. Block Diagram 6.1 Monitor Exploded View...
  • Page 17: Software Flow Chart

    HP f1905 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 18: Electrical Block Diagram

    HP f1905 Service Manual 6.3 Electrical Block Diagram 6.3.1 Scalar Board Block Diagram...
  • Page 19: Inverter/Power Board

    HP f1905 Service Manual 6.3.2 Inverter / Power Board Block Diagram Inverter Block Diagram...
  • Page 20 HP f1905 Service Manual Power Block Diagram...
  • Page 21: Schematic

    HP f1905 Service Manual 7. Schematic 7.1 Main Board CN101 RX2-IN A_GND RX2- RX2+IN RX2+ SGND R101   1/16W SCL_IN DDCCLK   SDA_IN R102 1/16W DDCDAT A_VSY NC RX1-IN RX1- RX1+IN RX1+ SGND DVI_5V ZD101 R103 10K   1/16W HOT_PLUG MLL5232B 5.6V...
  • Page 22 HP f1905 Service Manual 1.8V_CVDD Clos e to re s pe ctive pow e r Pins +1.8V FB201 120 OHM C202 C203 C204 C205 C206 C207 C208 C201 1.8V_AVDD 10uF/50V 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 1.8V_DVI 1.8V_PLL 1.8V_CVDD 3.3V_LVDS...
  • Page 23 HP f1905 Service Manual VCC5V+ TO-263 D310 U301 CN301 ES3D R316   4.7K 1/16W AIC1084-18CE ON_OFF PBIAS VCC12V VCC12V D311 C304 VCC5V+ ES3D +1.8V 0.1uF SMAL240LVXRO +1.8V D309 CONN C305 C306 C307 0.1uF 47uF/25V 0.1uF C302 C303 +3.3V R301 100uF/25V 0.1uF...
  • Page 24 HP f1905 Service Manual CN401 CONN LV_O[0..9] RXO0- RXO0+ LV_O0 RXO0- RXO1- RXO1+ LV_O1 RXO0+ RXO2- RXO2+ RXO1- RXOC- RXOC+ LV_O2 RXO1+ RXO3- RXO3+ LV_O3 LV_O4 RXO2- RXE0- RXE0+ LV_O5 RXO2+ RXE1- RXE1+ RXE2- RXE2+ RXOC- LV_O6 RXEC- RXEC+ RXOC+...
  • Page 25: Inverter/Power Board

    HP f1905 Service Manual 7.2 Power Board L907 L909 L903 +13VCC Q904 BEAD 73L253151-L(45uH) BEAD R901 MOSFET P   R902 1/16W   C927 1/16W C926 1000uF/25V C923 Q902 D901 1000uF/16V C911 L904 PMBS3904 0.1uF/25V AUDIO SM340A 0.1uF/25V R943   Q903...
  • Page 26 HP f1905 Service Manual R701 INV1   1/8W Q712 CN701 DTA144WKA C701 PT701 220uF/25V Q713 Q701 DTC144WKA R704 R702 C702   ON/OFF 100 (1206)   1/8W C703 22pF/3KV 0.0022uF R705 R707 C704   6.2M 1/2W CONN   1/8W C705 Q702 0.0022uF...
  • Page 27 HP f1905 Service Manual R942   R912 1/8W   665K 1/8W INV1 C904 R915 C912 150uF/400V   R914 R913 POWER X'FMR 1/8W   C913 100K L912 BD901 R916 1500P/2KV 0.001uF BEAD   U4KB80R 665K 1/8W T901 L911 BEAD L905 INV2...
  • Page 28: Pcb Layout

    HP f1905 Service Manual 8. PCB Layout 8.1 Power BOARD...
  • Page 29 HP f1905 Service Manual...
  • Page 30 HP f1905 Service Manual...
  • Page 31 HP f1905 Service Manual...
  • Page 32: Keypad Board

    HP f1905 Service Manual 8.2 KEY BOARD...
  • Page 33: Maintainability

    HP f1905 Service Manual 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 34: Trouble Shooting

    HP f1905 Service Manual 9.2 Trouble Shooting 9.2.1 Main Board No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the power section Measure U301 PIN2=1.8V?
  • Page 35 HP f1905 Service Manual No picture (LED is orange) No picture 1.Check power section Measure U301 PIN2=1.8V? Measure U302 PIN2=3.3V? 2.Replace U301, U302 X201 oscillate waveforms are normal Replace X201 Check if the sync signal from computer is output and video...
  • Page 36 HP f1905 Service Manual Panel Power Circuit Measure Q402 base is high level? X201 oscillate waveforms are normal Check Q402 and Q203 Replace X201 are broken or CN401 Replace U201 Check Correspondent component. Replace PANEL...
  • Page 37: Power/Inverter Board

    HP f1905 Service Manual 9.2.2 Power Board No Power No power Check AC line volt 110V or 220V Check AC line Check the voltage of C904(+) Check F901, bridge rectified circuit Check start voltage for the pin3 of IC901 Check R912, R916, R918, IC901...
  • Page 38 HP f1905 Service Manual No Backlight Check CN903 Pin1/3 =12V Check adapter Check ON/OFF signal Check Interface board Check IC701 PIN6=5V+0.25V Check Q713,Q712, Q702, ZD701 circuit Check IC701 PIN1=5V Check Q707, Q706 circuit Check IC701 PIN 2 triangular wave is...
  • Page 39: Keypad Board

    HP f1905 Service Manual 9.2.3 Keypad Board OSD is unstable or not working Is Keypad board connecting normally Connect Keypad Board Is Button Switch normally Replace Button Switch Replace Keypad Board Is Keypad board normally Check main board...
  • Page 40: 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.
  • Page 41: Edid Content

    HP f1905 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.
  • Page 42 HP f1905 Service Manual 12. BOM T980KAVDKHHPA CBPC980KAVHP CONVERSION BOARD KEPC980KB4 KEY BOARD PWPC1942AUH5 POWER BOARD 11L6049 2 TIE MOUNT(S) 12G 423 1 BUCKET BUMPER 15L8127 1 MAIN FRAME 23L3178690 6A LOGO 33L4802 PC L BASE COVER 34L1471APC B BEZEL...
  • Page 43 HP f1905 Service Manual 705L980KB34082 19" BACK COVER ASS'Y 705L980KP34003 19" STAND ASS'Y 750LLU90N04 LCD PANEL M190EN04 V2 B AIC980KAVHP MAIN BOARD 40G 45762412B CBPC LABEL 40L 457624 1B CPU LABEL C201 67L305V100 7N GP EL105C (SHORT) C209 67L305V100 7N GP...
  • Page 44 HP f1905 Service Manual C202 65L0603104 32 CHIP 0.1UF 50V X7R C203 65L0603104 32 CHIP 0.1UF 50V X7R C204 65L0603104 32 CHIP 0.1UF 50V X7R C205 65L0603104 32 CHIP 0.1UF 50V X7R C206 65L0603104 32 CHIP 0.1UF 50V X7R C207 65L0603104 32 CHIP 0.1UF 50V X7R...
  • Page 45 HP f1905 Service Manual C301 65L0805105 22 CHIP 1UF 25V X7R 0805 C303 65L0603104 32 CHIP 0.1UF 50V X7R C304 65L0603104 32 CHIP 0.1UF 50V X7R C305 65L0603104 32 CHIP 0.1UF 50V X7R C307 65L0603104 32 CHIP 0.1UF 50V X7R...
  • Page 46 HP f1905 Service Manual FB204 71L 56K121 CHIP BEAD 120OHM 6A FB205 71L 56K121 CHIP BEAD 120OHM 6A FB206 71L 56K121 CHIP BEAD 120OHM 6A FB207 71L 56K121 CHIP BEAD 120OHM 6A FB208 71L 56K121 CHIP BEAD 120OHM 6A FB209...
  • Page 47 HP f1905 Service Manual R131 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R133 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R134 61L0603103 CHIPR 10K OHM +-5% 1/10 R135 61L0603103 CHIPR 10K OHM +-5% 1/10 R145 61L0603472 CHIPR 4.7K OHM +-5% 1/1 R205...
  • Page 48 HP f1905 Service Manual R403 61L0603104 CHIPR 100K OHM +-5% 1/1 R404 61L0603104 CHIPR 100K OHM +-5% 1/1 R405 61L0603103 CHIPR 10K OHM +-5% 1/10 R408 61L1206331 CHIP 330OHM 5% 1/4W U101 56L1133 34 M24C02-WMN6T SMT U102 56L1133 34 M24C02-WMN6T SMT...
  • Page 49 HP f1905 Service Manual ZD107 93L 39S 34 T UDZS5.6B PW1942AUH5SMT POWER BOARD FOR SMT 40L 45762420A ID LABEL 1.02 705L 980 56 03 CN901 ASS'Y 705L 980 57 07 Q901 ASS'Y 705L 980 87 04 CN901 ASS'Y 705L 980 93 06...
  • Page 50 HP f1905 Service Manual L901 73L 174 53 L GP CHOKE L902 73L 174 40 LS LINE FILTER L903 73L 253151 L CHOKE COIL 45VH L905 73L 253 91 L CHOKE BY LI TA L906 73L 253 91 L CHOKE BY LI TA...
  • Page 51 HP f1905 Service Manual C910 65L0603104 22 CAP:CER 0.1UF 10% 25V S C911 65L0603104 22 CAP:CER 0.1UF 10% 25V S C919 65L0805104 32 CHIP 0.1UF 50V X7R C923 65L0603104 22 CAP:CER 0.1UF 10% 25V S C924 65L0805471 21 CHIP 470PF 25V NPO...
  • Page 52 HP f1905 Service Manual Q701 57G 600 55 P5506 HVG SO-8 Q702 57L 417 4 PMBS3904/PHILIPS-SMT(04 Q703 57L 759 2 RK7002 SOT-23 Q704 57L 417 6 PMBS3906/PHILIPS-SMT(06 Q705 57G 600 55 P5506 HVG SO-8 Q706 57L 759 2 RK7002 SOT-23...
  • Page 53 HP f1905 Service Manual R724 61L0603220 0F 220 OHM +-1% 1/10W R726 61L0603430 0F 430 OHM +-1% 1/10W R727 61L0603105 CHIPR 1M OHM+-5% 1/10W R728 61L1206220 CHIP 22OHM 5% 8W R729 61L0603102 CHIPR 1K OHM +-5% 1/10W R730 61L0603104 CHIPR 100K OHM +-5% 1/1...
  • Page 54 HP f1905 Service Manual R927 61L0805221 CHIPR 220 OHM +-5% 1/8W R929 61L0805240 2F CHIP 24KOHM 1% 1/8W R930 61L0805102 CHIPR 1K OHM +-5% 1/8W R931 61L0805102 CHIPR 1K OHM +-5% 1/8W R932 61L0805100 2F CHIP 10K OHM 1/8W 1%...
  • Page 55 HP f1905 Service Manual L910 71L 55 19 BEAD RH 3.5*9*0.8 AB 03 L912 71L 55 19 BEAD RH 3.5*9*0.8 AB 03 PT701 6L 31502 1.5MM RIVET PT702 6L 31502 1.5MM RIVET Q901 6L 31502 1.5MM RIVET R705 61L212Y625 KT 6.2M 3KV KAMAYA...
  • Page 56 HP f1905 Service Manual T980KCVDKHHPA CBPC980KCVHP CONVERSION BOARD KEPC980KB4 KEY BOARD PWPC1942CPH3 POWER BOARD 11L6049 2 TIE MOUNT(S) 12G 423 1 BUCKET BUMPER 15L8127 1 MAIN FRAME 23L3178690 6A LOGO 33L4802 PC L BASE COVER 34L1471APC B BEZEL 34L1473APD 1B...
  • Page 57 HP f1905 Service Manual 705L980KB34082 19" BACK COVER ASS'Y 705L980KP34003 19" STAND ASS'Y 750LLC90A03 CPT 19" EA03 PANEL AIC980KCVHP MAIN BAORD 40L 457624 1B CPU LABEL 40L 45762412B CBPC LABEL 67L305V100 7N C201 EL105C (SHORT) 67L305V100 7N C209 EL105C (SHORT)
  • Page 58 HP f1905 Service Manual 14.318MHzHC-49U 715L1370 C H MAIN BOARD C101 65L0805105 22 CHIP 1UF 25V X7R 0805 C103 65L0603473 32 CHIP 0.047UF 50V X7R C104 65L0603473 32 CHIP 0.047UF 50V X7R C106 65L0603473 32 CHIP 0.047UF 50V X7R C107 65L0603473 32 CHIP 0.047UF 50V X7R...
  • Page 59 HP f1905 Service Manual C233 65L0603104 32 CHIP 0.1UF 50V X7R C234 65L0603104 32 CHIP 0.1UF 50V X7R C235 65L0603104 32 CHIP 0.1UF 50V X7R C237 65L0603104 32 CHIP 0.1UF 50V X7R C239 65L0603104 32 CHIP 0.1UF 50V X7R C240 65L0603104 32 CHIP 0.1UF 50V X7R...
  • Page 60 HP f1905 Service Manual D303 93L 39S 34 T UDZS5.6B D304 93L 39S 34 T UDZS5.6B D305 93L 39S 34 T UDZS5.6B D306 93L 39S 34 T UDZS5.6B D309 93L2004 2A SM240A DO-214AC D310 93L3020 19 ES3D 3A D311 93L3020 19...
  • Page 61 HP f1905 Service Manual R115 61L0603101 CHIPR 100 OHM +-5% 1/10 R116 61L0603470 CHIPR 47 OHM +-5% 1/10W R117 61L0603470 CHIPR 47 OHM +-5% 1/10W R118 61L0603750 CHIPR 75 OHM+-5% 1/10W R119 61L0603750 CHIPR 75 OHM+-5% 1/10W R120 61L0603750 CHIPR 75 OHM+-5% 1/10W...
  • Page 62 HP f1905 Service Manual R302 61L0603102 CHIPR 1K OHM +-5% 1/10W R307 61L0603303 CHIP 30K OHM 5% 1/10W R308 61L0603473 CHIP 47K OHM 1/10W R309 61L0603223 CHIPR 22K OHM +-5% 1/10 R310 61L0603303 CHIP 30K OHM 5% 1/10W R311 61L0603103...
  • Page 63 HP f1905 Service Manual AIK980KB4SMT KEY BOARD FOR SMT 715L1404 G 81L 14 9 HL HI-LIGHT LED JP103 33G803415C WAFER 77G 607 1 FD TACT SWITCH 77G 607 1 FD TACT SWITCH 77G 607 1 FD TACT SWITCH 77G 607 1 FD...
  • Page 64 HP f1905 Service Manual LOW&E.S.RE.C 105   C922 67L215C102 4K C926 67L 215102 3K 1000UF +-20% 16V LOW&E.S.RE.C 105   C927 67L215C102 4K C934 65L306M3322BM 3300PF 20% 250VAC KX 65G 1M103 C935 10NF +-2% 1000V 3B6921 65G 1M103 C938 10NF +-2% 1000V 3B6921 Y1.CAP.001UF 250VAC...
  • Page 65 HP f1905 Service Manual C711 65L0603103 32 0.01UF+-10% 50V X7R C712 65L0603332 31 0.0033UF C714 65L0603333 32 0.033UF/50V C715 65L0603222 32 CHIP 2200PF 50V X7R C717 65L0603473 32 CHIP 0.047UF 50V X7R C718 65L0603333 32 0.033UF/50V C719 65L0603331 32 CHIP 330PF 50V X7R...
  • Page 66 HP f1905 Service Manual D704 93L 6433P BAV99 D705 93L 6432V LL4148-GS08 D706 93L 6433P BAV99 D707 93L 6433P BAV99 D709 93L 6432V LL4148-GS08 D710 93L 6432V LL4148-GS08 D711 93L 6433P BAV99 D712 93L 6433P BAV99 D713 93L 6432V LL4148-GS08...
  • Page 67 HP f1905 Service Manual Q906 57L 417 4 PMBS3904/PHILIPS-SMT(04 R701 61L1206000 CHIPR 0 OHM +-5% 1/4W R702 61L1206220 CHIP 22OHM 5% 8W R703 61L0603102 CHIPR 1K OHM +-5% 1/10W R704 61L1206101 CHIP 100 OHM 5% 1/4W R706 61L0603100 CHIP 10 OHM 1/10W...
  • Page 68 HP f1905 Service Manual R743 61L0805102 CHIPR 1K OHM +-5% 1/8W R901 61L0603103 CHIPR 10K OHM +-5% 1/10 R902 61L0603392 CHIP 3.9K OHM 1/10W CHIPR 470 OHM+-5% R903 61L0603471 1/10W R904 61L0603333 CHIP 33K OHM 1/10W R905 61L0603000 CHIPR 0OHM +-5% 1/10W...
  • Page 69 HP f1905 Service Manual ZD701 93L 39S 24 T RLZTE-115.6B ROHM ZD901 93L 39S 12 T RLZ20B BY ROHM ZD902 93L 39S 17 T RLZ12B ROHM ZD903 93L 39S 10 T RLZ6.8B 715L1421 1 C732 65L 442220 1T 22P CERAMIC CAP...
  • Page 70 HP f1905 Service Manual CN901 87L 501 12 RF AC SOCKET 90L6081 2 HEAT SINK M1L1730 8128 SCREW M3x8 D903 93L 60242 SRF20150C T0-220 D907 93L 60242 SRF20150C T0-220 33L4789 PM L CONTROL BUTTON 33L4790APM L POWER BUTTON 33L4799 1 L...
  • Page 71 文件名: AOC Service Manual- HP F1905 目录: D:\Service Manual\LCD\HP\AOC Service Manual- HP F1905 模板: C:\Documents and Settings\qiufen.mao\Application Data\Microsoft\Templates\Normal.dotm 标题: 主题: 作者: 关键词: 备注: 创建日期: 2005-1-5 16:56:00 修订号: 上次保存日期: 2006-3-30 8:42:00 上次保存者: Qiufen 编辑时间总计: 754 分钟 上次打印时间: 2008-1-24 9:52:00 打印最终结果 页数:...
  • Page 72 字数: 8,946 (约) 字符数: 50,994 (约)

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