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HP L1910I Service Manual
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HP L1910I Service Manual

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19" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents......................................................1
Revision List........................................................2
1. Monitor Specification...............................................3
2. LCD Monitor Description........................................4
3. Operation Instruction............................................5
3.1. General Instructions.........................................5
3.2. Control Button......................................................5
3.3 Adjusting the Picture..........................................6
4. Input/Output Specification.......................................10
4.1. Input Signal Connector.........................................10
4.2. Factory Preset Display Modes...........................10
5. Panel Specification.........................................11
5.1. General Feature...............................................11
5.2. Optical Characteristics....................................11
6. Block Diagram.....................................................12
6.1 Software Flow Chart.......................................12
6.2.Electrical Block Diagram...........................14
7. Schematic.....................................................16
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
All manuals and user guides at all-guides.com

TABLE OF CONTENTS

Page Description
7.1 Main Board....................................................16
7.2 Power Board...............................................20
7.3 Key Board..................................................22
8.PCB Layout...............................................23
8.1. Main Board.................................................23
8.2. Power Board..........................................25
8.3. Key Board...............................................27
9. Maintainability................................................28
9.2. Trouble Shooting......................................29
9.2.1 Main Board..........................................29
9.2.2 Power Board.......................................31
9.2.3 Key Board..........................................33
11.Mechanical Instructions.................................36
12. Monitor Exploded View.....................................42
13. BOM List.....................................................43
14. Different Parts List...............................................54
SAFETY NOTICE
1
HP L1910i
Horizontal Frequency
24- 83 kHz
Page

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  • Page 1: Table Of Contents

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Service Service Service Horizontal Frequency 24- 83 kHz TABLE OF CONTENTS Description Page Description Page 7.1 Main Board..………........16 Table Of Contents..……......…..1 7.2 Power Board.….……........20 Revision List.…........……..2 7.3 Key Board…………………………………………..22 1.

  • Page 2: Revision List

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Revision List Version Date Revision History TPV Model Name Nov.-21-2007 Initial release T97GMSDKHN1HNNE T97GMSDKHN1HNNE Nov.-20-2008 Add TPVDW Model in Item 14 T97HMSDKHN1HNNE T97GMSDKHN1HNCE...

  • Page 3: Monitor Specification

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 1. Monitor Specification...

  • Page 4: Lcd Monitor Description

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 2. LCD Monitor Description The LCD Monitor will contain main board, power board, a key board which house the flat panel control logic, brightness control logic and DDC.

  • Page 5: Operation Instruction

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 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 of the panel. By changing these settings, the picture can be adjusted to your personal performance.

  • Page 6: Adjusting The Picture

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 3.3 Adjust the Picture...
  • Page 7 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i...
  • Page 8 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i...
  • Page 9 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i...

  • Page 10: Input/Output Specification

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 4. Input/Output Specification 4.1 Input Signal Connector 4.1.1 D-SUB connector Signal Signal Red Video 3.3/+5 V (from PC) Green Video Sync Ground Blue Video None None DDC Data...

  • Page 11: Panel Specification

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 5. Panel Specification 5.1 General Feature 5.2 Optical Characteristics...

  • Page 12: Block Diagram

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 6. Block diagram 6. 1 Software Flow Chart...
  • Page 13 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i REMARK: 1) MCU initialize. 2) Is the EEprom blank? 3) Program the EEprom by default values. 4) Get the PWM value of brightness from EEprom. 5) Is the power key pressed? 6) Clear all global flags.

  • Page 14: Electrical Block Diagram

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 6.2 Electrical Block Diagram 6.2.1 Scalar Board Panel Interface (CN401) EPR_SDA EEPROM EPR SCL Scalar HUM56AWL-LF (U402) (Include ADC、OSD、MCU) (U401) H sync V sync Crystal D-Sub Connector...
  • Page 15 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 6.2.2 Inverter / Power Board AC input Bridge Rectifier EMI filter Transformer Rectifier diodes and Filter CN902 Start Circuit Feedback Over Circuit Voltage Control IC Protect ON/OFF...

  • Page 16: Schematic

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 7. Schematic 7.1 Main Board R101 0R05 1/16W R102 100R 1/16W DSUB_H R103 100R 1/16W FB102 DSUB_V VGA_B+ R104 100R 1/16W C101 DSUB_B+ BEAD 0.047uF ZD101 ZD102...
  • Page 17 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i VDVI VMPLL VPLL AVDD VDDP VDDC VDDP U401 VCC3.3 VCC3.3 FB203 AVDD VCC3.3 FB204 VPLL HUM56AWL-LF VCC3.3 300OHM 300OHM C203 C204 C206 C208 VCTRL C202 10uF/50V 0.1uF/16V...
  • Page 18 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i PANEL_VCC CN301 PA[0..9] PA[0..9] LVA3P LVA3M LVACKP LVACKM LVA2P C302 LVA2M R302 0.1uF/16V LVA1P 330R 1/8W 5% LVA1M LVA3P LVA0P LVA3M LVACKP LVA0M LVACKM LVA2P LVA2M LVA1P PB[0..9]...
  • Page 19 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i CN401 MVCC U702 VCC1.8 CMVCC AP1117E18LA R402 3.3 OHM 2W CMVCC CMVCC BKLT-VBRI C411 C402 BKLT-EN 0.1uF/16V C410 100uF16V C_PANEL_INDEX PANEL_ID# 0.1uF/16V Volume# Volume# Mute Mute *12/28 change to LDO due to...

  • Page 20: Power Board

    250V ON/OFF CN901 SOCKET GND 1 (009G6005 CONN GND 2 (009G6005 HS5 with Heat-sink (90G6064 1) HS1 with Heat-sink(090G6263 HP L1950 & L1750 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size Custom HS2 with Heat-sink(090G6263...
  • Page 21 Q803 Q802 2N7002 SOT-23 2N7002 SOT-23 Q804 R849 0R05 1/10W 5% C815 0.047uF R826 1M 1/10W 5% HP L1950 & L1750 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size Custom G2655-1-X-X-1-070802 TPV MODEL 絬...

  • Page 22: Key Board

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 7.3 Key Board FB001 600 OHM CN001 R003 3K 1/10W LBADC1 FB002 600 OHM R002 1.8K OHM 1% 1/10W LBADC2 DC_POWER_ON R001 3K 1/10W LED_GRN FB003 600 OHM...

  • Page 23: Pcb Layout

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 8. PCB Layout 8.1 Main Board...
  • Page 24 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i...

  • Page 25: Power Board

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 8.2 Power Board...
  • Page 26 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i...

  • Page 27: Key Board

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 8.3 Key Board...

  • Page 28: Maintainability

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 9. Maintainability 9.1Equipments and Tools Requirement 1. Multi-meter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with a Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer.

  • Page 29: Trouble Shooting

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 9.2 Trouble Shooting 9.2.1 Main Board 1、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...
  • Page 30 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i No picture (LED is orange) No picture Measure Q202=3.3V R205 = 3.3V Replace Q202/R205 X201 oscillate waveforms are normal Replace X201 Check if the sync signal from...

  • Page 31: Power Board

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 9.2.2 Power Board 1. No Power No power Check AC line volt 110V or 220V Check AC line Check the voltage of C907(+) Check F901, bridge rectified circuit...
  • Page 32 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 2. W/LED No Backlight Check C812 (+) =12V Check Q806 Check ON/OFF signal Check Interface board Check IC801 pin2=5V ? Change Q802 or Q803 Check the pin1 of IC801 have saw tooth wave Change IC801 Check ZD803 has the output of square wave at short time.

  • Page 33: Key Board

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 9.2.3 Key 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...

  • Page 34: White-Balance, Luminance Adjustment

    6500K color temp. parameter is x = 313±15, y = 329 ±15, Y>230 cd/m 3. Into factory mode of HP L1910i Turn on power, press the Menu button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.
  • Page 35 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i B. Adjust sRGB color-temperature 1. Switch the chroma-7120 to sRGB channel. 2. The chroma 7120 will show x = 313 ±15, y = 329 ±15, Y >200 cd/m 3.

  • Page 36: Mechanical Instructions

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 11. Mechanical Instructions Step Figure Description Lay the monitor on a flat, soft Preparation and clean surface. Remove the decorate cover Remove the and the screws stand to remove the stand.
  • Page 37 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Remove the Remove the back cover back cover Remove the Remove the screws to bezel remove the bezel...
  • Page 38 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Remove the screws marked in red and to remove the main frame Remove the Put this main frame cover up.
  • Page 39 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Remove Remove the panel panel...
  • Page 40 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 1.Remove the screws marked in red to remove the Power Board、 Remove USB Board main board and Main and power Board. board 2.Disconnect the connector and remove...
  • Page 41 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i The machine The end disconnect freely...

  • Page 42: Monitor Exploded View

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 12. Monitor Exploded View...

  • Page 43: Bom List

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 13. BOM List T97GMSDKHN1HNNE Location Part No. Description CBPC7LMSHPH2 MAIN BOARD KEPC7HC5 KEY BOARD PWPC941GH1H POWER BOARD 40G 58162435A MANUAL LABEL 1185 MIDDLE TAPE 89G 72AHAAE01 SIGNAL CABLE...
  • Page 44 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Q41G7800690B36 RTF CARD(407430-004) Q41G7800690C01 SCREEN RESOLUTION(31161 Q45G 76 28 H PE BAG FOR MANUAL Q45G 88609 29 PE BAG(EPE) CN201 33G3802 6B Y WAFER CN401 33G3802 9B Y...
  • Page 45 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i R117 61G0402101 6857 RST CHIPR 100 OHM +-5% R207 61G0402101 6857 RST CHIPR 100 OHM +-5% R213 61G0402101 6857 RST CHIPR 100 OHM +-5% R214 61G0402101 6857...
  • Page 46 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i R404 61G0402472 6857 RST CHIPR 4.7KOHM +-5% R304 61G0402473 6857 RST CHIPR 47K OHM +-5% R216 61G0402560 6857 RST CHIP 56R 1/16W 5% R139 61G0402682 6857 RST CHIPR 6.8KOHM +-5%...
  • Page 47 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i C231 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1 C301 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1 C302 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1...
  • Page 48 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i CN001 33G3802 6H 6176 WAFER 7P RIGHT ANGLE PI SW001 77G 602 7 HJ TACT SWITCH SFKQLL1530 SW002 77G 602 7 HJ TACT SWITCH SFKQLL1530 SW003 77G 602 7 HJ...
  • Page 49 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i C812 67G215S1024KV ELCAP 1000UF +-20% 25V C915 67G215S4713KV ELCAP 470UF +-20% 16V 1 C939 67G215V102 3N ELCAP 1000UF +-20% 16V C940 67G215V102 3R ELCAP 1000UF +-20% 16V...
  • Page 50 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i R818 61G0603104 6857 RST CHIPR 100KOHM +-5% R819 61G0603104 6857 RST CHIPR 100KOHM +-5% R817 61G0603105 6857 RST CHIPR 1MOHM +-5% 1/ R821 61G0603105 6857 RST CHIPR 1MOHM +-5% 1/...
  • Page 51 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i R962 61G1206101 6857 RST CHIPR 100 OHM +-5% R901 61G1206105 6857 RST CHIPR 1MOHM +-5% 1/ R902 61G1206105 6857 RST CHIPR 1MOHM +-5% 1/ R912 61G1206221 6857...
  • Page 52 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i D809 93G 6433S DIODE BAV99 SEMTECH ZD906 93G 39S 20 T RLZ22B LLDS ZD801 93G 39S 24 T RLZ 5.6B LLDS ZD802 93G 39S 24 T RLZ 5.6B LLDS...
  • Page 53 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i R828 61G212Y62552T6W56 RST MGFR 6.2MOHM +-5% 1 FB902 71G 55 9 T FERRITE BEAD 3.5*6*0.8- FB901 71G 55 29 6100 FERRITE BEAD D901 93G 6038T52T FR103 D900...

  • Page 54: Different Parts List

    All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i 14. Different Parts List Diversity of T97GMSDKHN1HNNE Compared with T97GMSDKHNHPNNE Location Part No. Description E08902 089G 72AHAAE01 SIGNAL CABLE E08901 089G402A19N LS POWER CORD 0M1G 840 12225 CR3...
  • Page 55 All manuals and user guides at all-guides.com 19" LCD Color Monitor HP L1910i Diversity of T97GMSDKHN1HNCE Compared with T97GMSDKHNHPNNE Location Part No. Description E08902 089G 72AHAAE01 SIGNAL CABLE E08901 089G402A19N LS POWER CORD 0M1G 840 12225 CR3 SCREW 705GH734101 ASS'Y...

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