HP L1910 Service Manual

HP L1910 Service Manual

19" lcd color monitor hp
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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....................................13
6. Block Diagram.....................................................15
6.1 Software Flow Chart.......................................15
6.2.Electrical Block Diagram...........................17
7. Schematic.....................................................19
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

TABLE OF CONTENTS

Page Description
7.1 Main Board....................................................19
7.2 Power Board...............................................23
7.3 Key Board..................................................27
8.PCB Layout...............................................28
8.1. Main Board.................................................28
8.2. Power Board..........................................30
8.3. Key Board...............................................32
9. Maintainability................................................33
9.2. Trouble Shooting......................................34
9.2.1 Main Board..........................................34
9.2.2 Power Board.......................................36
9.2.3 Key Board..........................................38
11.Mechanical Instructions.................................41
12. Monitor Exploded View.....................................47
13. BOM List.....................................................48
14. Different Parts List...............................................59
SAFETY NOTICE
1
HP L1910
Horizontal Frequency
24- 83 kHz
Page

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Summary of Contents for HP L1910

  • Page 1: Table Of Contents

    19" LCD Color Monitor HP L1910 Service Service Service Horizontal Frequency 24- 83 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……......…..1 7.1 Main Board..………........19 7.2 Power Board.….……........23 Revision List.…........……..2 7.3 Key Board…………………………………………..27 1. Monitor Specification......………..3 8.PCB Layout..……........28 2.
  • Page 2: Revision List

    19" LCD Color Monitor HP L1910 Revision List Version Date Revision History TPV Model Name T97GMSDKHNHPNNE Sep.-21-2007 Initial release T97HMSDKHNHPNNE Oct.-18-2007 Add TPVDW Model in Item 14 T97HMSDBHNHPNNE Oct.-22-2007 Add TPVDW Model in Item 14 T97SMSDBHNHPNNE Oct.-26-2007 Add TPVDW Model in Item 14 T97GMSDBHNHPNNE Nov.-01-2007...
  • Page 3: Monitor Specification

    19" LCD Color Monitor HP L1910 1. Monitor Specification...
  • Page 4: Lcd Monitor Description

    19" LCD Color Monitor HP L1910 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. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.
  • Page 5: Operation Instruction

    19" LCD Color Monitor HP L1910 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

    19" LCD Color Monitor HP L1910 3.3 Adjust the Picture...
  • Page 7 19" LCD Color Monitor HP L1910...
  • Page 8 19" LCD Color Monitor HP L1910...
  • Page 9 19" LCD Color Monitor HP L1910...
  • Page 10: Input/Output Specification

    19" LCD Color Monitor HP L1910 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 Ground (DDC Return) Horizontal Sync Red GND...
  • Page 11: Panel Specification

    19" LCD Color Monitor HP L1910 5. Panel Specification 5.1 General Feature LM190E08-TLL1 LPL/ LM190E08-TLG2/TLG4 LTM190EX-L31 QLC...
  • Page 12 19" LCD Color Monitor HP L1910 M190EG02 V40B SZ HSD190MEN3-A00 NJ / HSD190MEN3-A00 WH...
  • Page 13: Optical Characteristics

    19" LCD Color Monitor HP L1910 5.2 Optical Characteristics LM190E08-TLL1 LPL/ LM190E08-TLG2/TLG4 LTM190EX-L31 QLC...
  • Page 14 19" LCD Color Monitor HP L1910 M190EG02 V40B SZ HSD190MEN3-A00 WH / HSD190MEN3-A00 NJ...
  • Page 15: Block Diagram

    19" LCD Color Monitor HP L1910 6. Block diagram 6. 1 Software Flow Chart...
  • Page 16 19" LCD Color Monitor HP L1910 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 17: Electrical Block Diagram

    19" LCD Color Monitor HP L1910 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 X201 (CN101) 14.318Mhz DB15_SDA, DB15 SCL EEPROM...
  • Page 18 19" LCD Color Monitor HP L1910 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 Transformer MOSFET Resonance Lamp Over ON/OFF Feedback...
  • Page 19: Schematic

    19" LCD Color Monitor HP L1910 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 C102 C103 RLZ5.6B RLZ5.6B R105 R106 22pF...
  • Page 20 19" LCD Color Monitor HP L1910 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 C205 C207 0.1uF/16V LVA3P 0.1uF/16V 0.1uF/16V DSUB_R+...
  • Page 21 19" LCD Color Monitor HP L1910 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 LVA0M LVACKP LVACKM LVA2P LVA2M LVA1P PB[0..9] PA7 LVA1M PB[0..9] LVB3P LVB3M LVA0P...
  • Page 22 19" LCD Color Monitor HP L1910 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 CONN C405 internal ripple too big 0.1uF/16V...
  • Page 23: Power Board

    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 24 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 25 250V ON/OFF CN901 SOCKET GND 1 (009G6005 CONN GND 2 (009G6005 HS5 with Heat-sink (90G6064 1) HS1 with Heat-sink(090G6263 HP L1910 L1710 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size HS2 with Heat-sink(090G6263...
  • Page 26 Q802 RK7002 SOT-23 RK7002 SOT-23 Q804 R849 0R05 1/10W 5% C815 0.047uF R826 1M 1/10W 5% HP L1910 L1710 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size G2655-2-2-X-1-080121 TPV MODEL 絬 隔 瓜 絪 腹...
  • Page 27: Key Board

    19" LCD Color Monitor HP L1910 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 LED_AMB FB004 600 OHM CONN FB005 600 OHM...
  • Page 28: Pcb Layout

    19" LCD Color Monitor HP L1910 8. PCB Layout 8.1 Main Board...
  • Page 29 19" LCD Color Monitor HP L1910...
  • Page 30: Power Board

    19" LCD Color Monitor HP L1910 8.2 Power Board...
  • Page 31 19" LCD Color Monitor HP L1910...
  • Page 32: Key Board

    19" LCD Color Monitor HP L1910 8.3 Key Board...
  • Page 33: Maintainability

    19" LCD Color Monitor HP L1910 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. 7. Service Manual. 8. User Manual.
  • Page 34: Trouble Shooting

    19" LCD Color Monitor HP L1910 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 Reinsert or check the power section Measure U701 PIN 2=3.3V...
  • Page 35 19" LCD Color Monitor HP L1910 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 computer is output and video cable is connected normally...
  • Page 36: Power Board

    19" LCD Color Monitor HP L1910 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 Check start voltage for the pin8of IC901...
  • Page 37 19" LCD Color Monitor HP L1910 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 38: Key Board

    19" LCD Color Monitor HP L1910 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 Is Keypad board normally? Check main board...
  • Page 39: 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 L1910 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 40 19" LCD Color Monitor HP L1910 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. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change ) 4.
  • Page 41: Mechanical Instructions

    19" LCD Color Monitor HP L1910 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 42 19" LCD Color Monitor HP L1910 Remove the Remove the back cover back cover Remove the Remove the screws to bezel remove the bezel...
  • Page 43 19" LCD Color Monitor HP L1910 Remove the screws marked in red and to remove the main frame Remove the Put this main frame cover up.
  • Page 44 19" LCD Color Monitor HP L1910 Remove Remove the panel panel...
  • Page 45 19" LCD Color Monitor HP L1910 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 the Power Board and Main Board.
  • Page 46 19" LCD Color Monitor HP L1910 The machine The end disconnect freely...
  • Page 47: Monitor Exploded View

    19" LCD Color Monitor HP L1910 12. Monitor Exploded View...
  • Page 48: Bom List

    19" LCD Color Monitor HP L1910 13. BOM List T97GMSDKHNHPNNE Location Part No. Description CBPC7LMSHPH2 MAIN BOARD KEPC7HC5 KEY BOARD PWPC941GH1H POWER BOARD 40G 58162435A MANUAL LABEL 1185 MIDDLE TAPE 89G 728HAAE03 SIGNAL CABLE 89G179E30H 19 FFC CABLE 89G402A19N LS...
  • Page 49 19" LCD Color Monitor HP L1910 Q41G7800690B36 RTF CARD(407430-004) Q41G7800690C01 SCREEN RESOLUTION(31161 Q45G 76 28 H PE BAG FOR MANUAL CN201 33G3802 6B Y WAFER CN401 33G3802 9B Y WAFER CN301 33G801930F H FPC CONN .1.0MM 30P 40G 45762412B CBPC LABEL...
  • Page 50 19" LCD Color Monitor HP L1910 R207 61G0402101 6857 RST CHIPR 100 OHM +-5% R213 61G0402101 6857 RST CHIPR 100 OHM +-5% R214 61G0402101 6857 RST CHIPR 100 OHM +-5% R215 61G0402101 6857 RST CHIPR 100 OHM +-5% R222 61G0402101...
  • Page 51 19" LCD Color Monitor HP L1910 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% R208 61G0402682 6857 RST CHIPR 6.8KOHM +-5% R233 61G0402682 6857 RST CHIPR 6.8KOHM +-5%...
  • Page 52 19" LCD Color Monitor HP L1910 C301 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1 C302 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1 C401 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1 C405 65G0402104 156785 MLCC 0402 CAP 0.1UF K 1...
  • Page 53 19" LCD Color Monitor HP L1910 SW001 77G 602 7 HJ TACT SWITCH SFKQLL1530 SW002 77G 602 7 HJ TACT SWITCH SFKQLL1530 SW003 77G 602 7 HJ TACT SWITCH SFKQLL1530 SW004 77G 602 7 HJ TACT SWITCH SFKQLL1530 LED001 81G 121C1 GP...
  • Page 54 19" LCD Color Monitor HP L1910 C915 67G215S4713KV ELCAP 470UF +-20% 16V 1 C939 67G215V102 3N ELCAP 1000UF +-20% 16V C940 67G215V102 3R ELCAP 1000UF +-20% 16V L801 73G 174 35DNA IND FILTER 200MH +-25% L802 73G 174 35DNA IND FILTER 200MH +-25%...
  • Page 55 19" LCD Color Monitor HP L1910 R819 61G0603104 6857 RST CHIPR 100KOHM +-5% R817 61G0603105 6857 RST CHIPR 1MOHM +-5% 1/ R821 61G0603105 6857 RST CHIPR 1MOHM +-5% 1/ R826 61G0603105 6857 RST CHIPR 1MOHM +-5% 1/ R838 61G0603105 6857...
  • Page 56 19" LCD Color Monitor HP L1910 R901 61G1206105 6857 RST CHIPR 1MOHM +-5% 1/ R902 61G1206105 6857 RST CHIPR 1MOHM +-5% 1/ R912 61G1206221 6857 RST CHIPR 220 OHM +-5% R904 61G1206304 6857 RST CHIPR 300KOHM +-5% R905 61G1206304 6857...
  • Page 57 19" LCD Color Monitor HP L1910 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 ZD803 93G 39S 24 T RLZ 5.6B LLDS ZD922 93G 39S 24 T RLZ 5.6B LLDS...
  • Page 58 19" LCD Color Monitor HP L1910 FB902 71G 55 9 T FERRITE BEAD 3.5*6*0.8- FB901 71G 55 29 6100 FERRITE BEAD D901 93G 6038T52T FR103 D900 93G1100 1152T DIODE PR1007R 1A/1000V IC903 56G 158 10 T AZ431AZ-AE1 TO-92 C906 65G 1K152 1T6921 1.5nF/1K Y5P +-10%...
  • Page 59: Different Parts List

    19" LCD Color Monitor HP L1910 14. Different Parts List Diversity of T97HMSDKHNHPNNE Compared with T97GMSDKHNHPNNE Location Part No. Description CBPC7HMSHPH2 MAIN BOARD PWPC941HH1H POWER BOARD 750GLH90N3A12Z000H PANEL HSD190MEN3-A00 NJ A15G0249 2103H MAIN FRAME R837 61G0603680 1F6857 RST CHIPR 6.8KOHM +-1%...
  • Page 60 19" LCD Color Monitor HP L1910 PWPC941SH1H POWER BOARD 89G412A19NLS3 POWER CORD 750GLS90L3132Z000H PANEL LTM190EX-L31 QLC A15G0249 2103S MAIN FRAME H41G160669024A DOCKIT 459446-371 R837 61G0603680 1F6857 RST CHIPR 6.8KOHM +-1% R829 61G0805680 1F6857 RST CHIPR 6.8KOHM +-1% Diversity of T97HMSDLHNHPNNE Compared with T97GMSDKHNHPNNE Location Part No.
  • Page 61 19" LCD Color Monitor HP L1910 A15G0249 2103S MAIN FRAME R402 61G152M33964L6W56 RST MOFR 3.3 0HM +-5% 2 R837 61G0603680 1F6857 RST CHIPR 6.8KOHM +-1% R829 61G0805680 1F6857 RST CHIPR 6.8KOHM +-1% Diversity of T97HMSDQHNHPNNE Compared with T97GMSDKHNHPNNE Location Part No.
  • Page 62 19" LCD Color Monitor HP L1910 R402 61G152M33964L6W56 RST MOFR 3.3 0HM +-5% 2 715G2559 2 36995 MAIN BOARD PCB CN001 33G3802 6 BH WAFER R837 61G0603680 1F6857 RST CHIPR 6.8KOHM +-1% R829 61G0805680 1F6857 RST CHIPR 6.8KOHM +-1% 715G2655 1 26403...
  • Page 63 19" LCD Color Monitor HP L1910 715G2559 2 36995 MAIN BOARD PCB CN001 33G3802 6 BH WAFER C903 63G107K224 6M CAP X2 0.22UF 250VAC C905 63G107K224 6M CAP X2 0.22UF 250VAC C801 65G0603473 326029 CHIP 0.047UF 50V X7R C802 65G0603473 326029 CHIP 0.047UF 50V X7R...
  • Page 64 19" LCD Color Monitor HP L1910 E750 750GLS90L3132Z000H PANEL LTM190EX-L31 QLC(0LU) SZ SEC A15G0249 2104S 19" MAIN FRAME CBPC7SMSHPH2 CONVERSIONG2559-K-X-X-3-070630 H41G160669024B L1*10/L1908* APD(459446-374) PWPC941SH1H G2655-2-2-X-6-081113 E08907 S89G179T30N19 LVDS ASSY Diversity of T97GMSDDHNHPNNE Compared with T97GMSDKHNHPNNE Location Part No. Description 041G780069089A...
  • Page 65 19" LCD Color Monitor HP L1910 H40G 58169015A WARRANTY LABEL H41G160669024B L1*10/L1908* APD(459446-374) Diversity of T97GMSDLHNHPN1E Compared with T97GMSDKHNHPNNE Location Part No. Description E08901 089G412A19NIS3 POWER CORD E750 750GLG190E8G23Z0HP PANEL LM190E08-TLG2 GZ LPL A15G0249 2104B 19" MAIN FRAME H40G 58169015A...

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