HP MV7540 SERVICE MANUAL 17’’ CDT MONITOR MV7540 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 LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
HP MV7540 Table of Content Revision List. ……………………………………………………………………………………..…………… 3 1. Monitor Specifications..................................................................……….........…….……….. ……… 4 2. Precaution And Notices.................................................................…...……..…………….……….. 6 2-1 Safety Precautions .................................................................……………………..….….…… 6 2-2 Product Safety Notice ......................................................
HP MV7540 Revision List Version Date Revision History TPV Model Name A00 Nov-06-2005 Initial Release S774BMAKCMO2 A01 Feb-13-2006 Update BOM S774BMCLCPO2P A02 Mar-06-2006 Update BOM S774BMCCCSO2 3
HP MV7540 1. Monitor Specifications 1. CRT : 43.2CM(17") 90 Deflection, 29mm Neck, 0.27mm Dot Pitch, Pure Flat, Non-Glare Screen 2. Viewable image Size: 40.6CM (16") diagonal 3. Display Color: Unlimited Colors 4. External Controls: Power On/Off, Power led, Function knob( Contrast, Brightness, H-Center, H-Size, V-Center, V-Size, Rotation, Pincushion, Trapezoid, Pin-Balance, Parallelogram, Color Temperature, Degaussing, Recall, Moiré, 5. Input Video Signal Mode Horizontal Freq.
HP MV7540 11. Humidity: 20% to 80% Relative, Non-Condensing 12. External Connection: 15 Pin D-type Connector AC Power Cord 13. The rotation can’t be recall in user mode. 14. Press the “MENU”funtion and don’t release it,then press power swith on,the monitor will enter the burnin mode if it is no signal input. 15.
HP MV7540 2. Precautions And Notices 2-1 Safety Precautions 1. 2. 3. 4. 5. 6. 7. Observe all caution and safety related notes located inside the display cabinet. Operation of the display with the cover removed, may cause a serious shock hazard from the display power supply. Work on the display should not be attempted by anyone who is not thoroughly familiar with precautions necessary when working on high voltage equipment.
HP MV7540 2-4 High Voltage Warning Operation of monitor outside of cabinet or with back removed may cause a serious shock hazard. Work on this model should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment. Exercise care when servicing this chassis with power applied. Many B plus and high voltage terminals are exposed which, if carelessly contacted, can cause serious shock or result in damage to the chassis.
HP MV7540 3. Operating Instructions This procedure gives you instructions for installing and using the Color display. 1. Position the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduit ground.
HP MV7540 4. Adjustment 4-1 Adjustment Conditions And Precautions 1. 2. Approximately 30 minutes should be allowed for warm up before proceeding. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 4-2 Main Adjustments No.
HP MV7540 H-MOIRE REDUCE H-SIZE H-CENTER V-MOIRE REDUCE V-SIZE MOIRE DISABLE V-CENTER HE NO USE PINCUSHION VE NO USE PARALLELOGRAM NO USE PIN-BALANCE V-LINEARITY TRAPEZOID V-LINEARITY ROTATION TOP CORNER SH NO USE BOT CORNER AB ABL ADJUST FREQUENCY SELECT CONTRAST HM MAX-HSIZE MODIFY BRIGHTNESS VM MAX-VSIZE MODIFY R-BIAS KM MAX-TRAPEZOID MODIFY G-BIAS BI BI SELECT FUNCTION R-BIAS DEGAUSS R-GAIN OSD EXIT G-GAIN RETURN B-GAIN Tm BURN IN TIME 9300 COLOR TEMPERATUR
HP MV7540 set to maximum. Contrast (d) Put the probe in the middle of screen, Brightness change to Raster pattern(No video)1024×768 @85Hz, set G-Bias set to max. 45,then adjust B-Bias , R-Bias and FBT screen VR, to make the color temperature x= 260 ±10, y= 290 ± 10, Y=0.6±0.02FL (e) Press up or down key to select cursor on 9300 icon and than press menu key for saved the bias data to EEPROM. B.
HP MV7540 6.Convergence adjustment A. Produce a magenta crosshatch on the display. B. Adjust the focus for the best overall focus on the display. Also adjust the brightness to the desired condition. C. Vertical red and blue lines are converged by varying the angle between the two tabs of the 4 pole magnets on the PCM assembly. (See above diagrams) D. Horizontal red and blue lines are converged by varying the two tabs together, keeping the angle between them constant. E.
HP MV7540 5. Circuit Description 5-1 Micro Controller Circuit MICRO Controller The IC101 contains a 6502/8051 8-bit CPU core, 512 bytes of RAM, 16K bytes of ROM,14 channel 8 bit PWM D/A converters, 2 channel A/D converters for key detection, one 8 bit pre-loadable base timer, internal H-sync and V-sync signals processor providing mode detection, watch- dog timer preventing system from abnormal operation, and an I²C bus interface.
HP MV7540 5-3 Transistor & Diode Circuit Location Circuit Function Description D901~D904 Bridge Rectifier for AC Source D910 Clamp Diode for snub CKT D919 Rectifier for Output Voltage D922 Rectifier for Output Voltage D923 Rectifier for Output Voltage D925 Rectifier for B+ Supply D929 B+ Feed Back Rectifier from F.B.T Pulse IC901 Power IC for Switching Power Control. (Build-in MOS FET) Q907, Q908 Use for Power Saving to Cut-off 6.
HP MV7540 6.Trouble Shooting Chart 6-1 No Power Check the load first because it may be caused by load short. No raster, the indicator is not on. Check the load components as: IC901, Q911, Q403, D922, D925, D919,D923. Check the voltage across C907 is 300V.
HP MV7540 6-2. No Raster, No High Voltage, Indicator Is Orange (1)Indicator is orange when there is no signal Abnormal (2)No signal is normal but it is orange when there is signal input. Cut pin5 of IC101, then check if it is normal. Check if H,V sync inputs at pin41,pin42 of IC101 are normal with oscillograph. YES Check if the voltage at pin5 of IC101 is normal. NO Replace IC101 NO YES Check the voltage at pin4 of IC101 is 4.7V Check the circuit of 5v power supply circuit as Q904, D103,ZD902.
HP MV7540 6-3. No Raster, Indicator Is Green If the indicator of functional key is normal when there’s no signal. NO YES Check CPU control circuit 1. 5v power supply circuit 2. Rest circuit 3. oscillator 4.I2C bus circuit. Connect with signal and check the voltage of G1 is between -25 and -65V. Check the voltage is at the normal range Check the voltage is about 0V Section2 Check the voltage is about -80v. Press the menu key and look if the indicator is under control.
HP MV7540 Section1 Enter into factory mode to adjust brightness, contrast and look if the picture is normal. NO YES If it can be adjusted to normal picture and stored. Check if the voltage of filament is normal. NO NO Replace IC102 YES Check the voltage of G2 is 200v. Check power-saving circuit and 6.3Vpower supply NO YES Adjust the G2 VR of FBT and look if the picture is normal. Check the if tube socket and tube pin are good.
HP MV7540 Section2 Check if the voltage at base of Q403 is 0v Check if the voltage at pin29 of IC401 is 11.5V YES NO Check the voltage at pin26 of IC401 is normal when H-frequency is 31KHZ. Cut pin29 and check if the voltage of circuit is normal. YES NO Replace IC401 Check the power supply of 11.5V and 80V circuit. Check if the voltage is normal. Check the components between H-driving output and base of Q403 as R422, C413, Q402, T401 Check if the voltage is 11V.
HP MV7540 6-4 H-Size Fails To Be Adjusted The picture is too large and H-size can’t be adjusted The picture is too small and H-size can’t be adjusted Cut the collector of Q406 and look if the picture becomes smaller, then check the voltage of circuit is half of B+. Check the voltages concerned with collector of Q406 as D406, D407, L405, C422. Check if the voltage of H-size control transistor is half of B+.
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HP MV7540 8.Parts List S774BMCCCSO2 Location Part Number AS1 Description Quantity Unit 001C 503504 47 SCREW FOR CRT 4.000 PCS 005C600604075S CRT WASHER 4.000 PCS 007C 7 7112 Compound Pallet 1.000 PCS 007C 7 7113 Compound Pallet 1.000 PCS 007C 7 7114 Compound Pallet 1.000 PCS 007C 7 7115 Compound Pallet 1.000 PCS 011C 112 1 WIRE MONNTS 1.000 PCS 011C 112500 WIRE MOUNT 1.000 PCS 011C 115500 FBT CLIP 1.000 PCS 011C6033 1 PCB SUPPORT 2.
HP MV7540 0Q1C 340 16 47 SCREW 4.000 PCS 0Q1C1030 10128 SCRIW 1.000 PCS 705A 78A HP UN SPEAK ASS'Y 1.000 PCS 750A1697504JAG DEGAUSSING COIL 1.000 PCS CMS774B2NHP CHASSIS FOR S774B-2HP 1.000 PCS Q33C6183 A5 A 27 POWER KNOB 1.000 PCS 040C 58162435A MANUAL P/N LABEL 1.000 PCS 089C174B5MC CG SIGNAL CABLE 1.000 PCS 089C402A19N LS POWER CORD 2.000 PCS 001C 421 4128 SCREW 2.000 PCS GND2 009C 203 8 BRASS PIN 1.000 PCS GND1 009C 203 8 BRASS PIN 1.
HP MV7540 C422 064C100J225 59 2.2UF +-5% 100V 1.000 PCS C911 065C 1K101 5T6921 100PF/1KV Y5P+-10% 1.000 PCS C919 065C 2M103 3B6921 0.01UF 2KV 20% Z5U 1.000 PCS C964 065C305M1032BH 10NF,400VAC, Y2, M 1.000 PCS C960 065C305M3322B2 3.3NF,400VAC, Y2, M 1.000 PCS C961 065C305M3322BH Y2 3300PF +-20% 250VAC/400VAC 1.000 PCS C963 065C305M4722B2 4.7NF,400VAC,Y2, M 1.000 PCS C962 065C305M4722B2 4.7NF,400VAC,Y2, M 1.000 PCS C907 067C 3022115X 220UF +-20% 450V 1.
HP MV7540 D925 093C30408AT RG-4S 1.000 PCS D922 093C30408AT RG-4S 1.000 PCS A3-A4 095C 201 69032 WIRE 1.000 PCS 095C2070548 WIRE 1.000 PCS 095C2070586 WIVE HARNESS 1.000 PCS 095C8013 14616 WIRE HARNESS 1.000 PCS 0B1C1040 12128 SCREW 1.000 PCS 0D1C1140 7128 SCREW 4X7(FOR AC) 2.000 PCS 0M1C1140 6128 SCREW 1.000 PCS 705A774BC56 1C WT CPU ASS'Y 1.000 PCS 705A774BC5602C IC901 ASS'Y 1.000 PCS 705A774BC57 3C Q911 ASS'Y 1.
HP MV7540 084C 33 10 087A 501 6 6425 FUSE CLIP 2.000 PCS RECEPTACLES 1.000 PCS CN901 095C 800 2 2 WIRE 1.000 PCS DF919 071C 55 2 A FERRITE BEAD 3*5*1.5 1.000 PCS 090C6118 1 HEAT SINK 1.000 PCS 093C 6073A F R D 3A/400V 31DF4/I.R 1.000 PCS D919 061C175L15952T CFR 1.5 OHM +-5% 1/2W 1.000 PCS 093A106050652T SBYV26C 1.000 PCS 096C 29 4 PLASTIC TUBEL 20.000 CM 750A5852774AVH P 17" CPT TCO ASS'Y for P 1.000 PCS 750A5852774AVH C 17" CPT TCO ASS'Y for C 1.
HP MV7540 JW2 095C 90 23 JUMPER 1.000 PCS JW3 095C 90 23 JUMPER 1.000 PCS JW4 095C 90 23 JUMPER 1.000 PCS JW5 095C 90 23 JUMPER 1.000 PCS R417 095C 90 23 JUMPER 1.000 PCS R444 095C 90 23 JUMPER 1.000 PCS R448 095C 90 23 JUMPER 1.000 PCS R484 095C 90 23 JUMPER 1.000 PCS J102 095C 90 23 JUMPER 1.000 PCS J083 095C 90 23 JUMPER 1.000 PCS J086 095C 90 23 JUMPER 1.000 PCS J087 095C 90 23 JUMPER 1.000 PCS J088 095C 90 23 JUMPER 1.
HP MV7540 J040 095C 90 23 JUMPER 1.000 PCS J037 095C 90 23 JUMPER 1.000 PCS J025 095C 90 23 JUMPER 1.000 PCS J026 095C 90 23 JUMPER 1.000 PCS J027 095C 90 23 JUMPER 1.000 PCS J028 095C 90 23 JUMPER 1.000 PCS J029 095C 90 23 JUMPER 1.000 PCS J030 095C 90 23 JUMPER 1.000 PCS J032 095C 90 23 JUMPER 1.000 PCS J033 095C 90 23 JUMPER 1.000 PCS J034 095C 90 23 JUMPER 1.000 PCS R725 061A212Y56352T MGFR 56K OHM +-5% 1/2W 1.
HP MV7540 R434 061C 17239252T CFR 3.9K OHM +-5% 1/4W 1.000 PCS R962 061C 17247052T CFR 47 OHM +-5% 1/4W 1.000 PCS R951 061C 17247152T CFR 470OHM +-5% 1/4W 1.000 PCS R486 061C 17247252T CFR 4.7K OHM +-5% 1/4W 1.000 PCS R473 061C 17247252T CFR 4.7K OHM +-5% 1/4W 1.000 PCS R439 061C 17247252T CFR 4.7K OHM +-5% 1/4W 1.000 PCS R960 061C 17247352T CFR 47K OHM +-5% 1/4W 1.000 PCS R474 061C 17247352T CFR 47K OHM +-5% 1/4W 1.
HP MV7540 R959 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R953 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R952 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R933 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R921 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R776 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R748 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R432 061C 60210352T CFR 10K OHM+-5% 1/6W 1.000 PCS R134 061C 60210352T CFR 10K OHM+-5% 1/6W 1.
HP MV7540 R981 061C175L10152T CFR 100 OHM +-5% 1/2W 1.000 PCS R721 061C175L10252T CFR 1K OHM +-5% 1/2W 1.000 PCS R901 061C175L10552T CFR 1M OHM +-5% 1/2W 1.000 PCS R606 061C175L12152T CFR 120 OHM +-5% 1/2W 1.000 PCS R741 061C175L12452T CFR 120K OHM +-5% 1/2W 1.000 PCS R605 061C175L15952T CFR 1.5 OHM +-5% 1/2W 1.000 PCS R740 061C175L56352T CFR 56K OHM +-5% 1/2W 1.000 PCS R908 061C175L75952T CFR 7.5 OHM +-5% 1/2W 1.000 PCS R441 061C175L82352T CFR 82K OHM +-5% 1/2W 1.
HP MV7540 D102 093C 64 1152T IN4148 1.000 PCS D100 093C 64 1152T IN4148 1.000 PCS FB401 093C1002 1F52T 1N5817 1.000 PCS D405 093C1002 1F52T 1N5817 1.000 PCS D103 093C1002 1W52T 1N5817 1.000 PCS D101 093C1002 1W52T 1N5817 1.000 PCS D740 093C1040 252T UF4004 1.000 PCS D403 093C1040 252T UF4004 1.000 PCS D404 093C1040 252T UF4004 1.000 PCS D929 093C1040 252T UF4004 1.000 PCS D923 093C2020 552T ER202 1.000 PCS R618 095C 90 23 JUMPER 1.
HP MV7540 C410 064C178J154 1T C121X 0.15UF 100V +-5% 1.000 PCS C417 064C178J224 1T C121X 0.22UF 100V +-5% 1.000 PCS C703 064C178J472 1T 4700PF 100V 1.000 PCS C449 064C178J473 1T 0.047UF 1.000 PCS C710 064C178J473 2T C121X 0.047UF 250V +-5% 1.000 PCS C611 064C178J474 0T CL21X. 0.47UF 63V +-5% 1.000 PCS C414 064C178J474 1T C121X 0.47UF 100V +-5% 1.000 PCS C608 064C178J474 1T C121X 0.47UF 100V +-5% 1.000 PCS C447 064C178J822 1T CL21X 8200PF 100V +-5% 1.
HP MV7540 C743 067C 309100 7T 10UF +-20% 50V 1.000 PCS C113 067C 309101 3T 100UF +-20% 16V 1.000 PCS C104 067C 309101 3T 100UF +-20% 16V 1.000 PCS C436 067C 309220 7T 22UF +-20% 50V 1.000 PCS C115 067C 309330 3T 33UF +-20% 16V 1.000 PCS C443 067C 309470 3T 47UF +-20% 16V 1.000 PCS C146 067C 309470 3T 47UF +-20% 16V 1.000 PCS C100 067C 309470 3T 47UF +-20% 16V 1.000 PCS C947 067C 309470 7T 47UF +-20% 50V 1.000 PCS C609 067C 309470 7T 47UF +-20% 50V 1.
HP MV7540 0M1C1730 7128 SCREW 1.000 PCS 006C 31 4 BRASS 3.000 PCS 715C 992 4HPQ PCB 1.000 PCS J802 095C 90 23 JUMPER 1.000 PCS J803 095C 90 23 JUMPER 1.000 PCS J804 095C 90 23 JUMPER 1.000 PCS J807 095C 90 23 JUMPER 1.000 PCS J810 095C 90 23 JUMPER 1.000 PCS J811 095C 90 23 JUMPER 1.000 PCS J815 095C 90 23 JUMPER 1.000 PCS J817 095C 90 23 JUMPER 1.000 PCS J818 095C 90 23 JUMPER 1.000 PCS J819 095C 90 23 JUMPER 1.
HP MV7540 R801 061C 60275052T CFR 75 OHM+-5% 1/6W 1.000 PCS R802 061C 60275052T CFR 75 OHM+-5% 1/6W 1.000 PCS R803 061C 60275052T CFR 75 OHM+-5% 1/6W 1.000 PCS R874 061C175L56052T CFR 56 OHM +-5% 1/2W 1.000 PCS R872 061C175L56052T CFR 56 OHM +-5% 1/2W 1.000 PCS R873 061C175L56052T CFR 56 OHM +-5% 1/2W 1.000 PCS FB801 071C 55 9 T CORE RF BEAD RH 3.5X6X0.76TP 1.000 PCS FB852 071C 55 19 T FERRITE BEAD 9X3.5X0.8 1.000 PCS FB850 071C 55 19 T FERRITE BEAD 9X3.5X0.8 1.
HP MV7540 C824 065C 450104 3T 0.1UF 50V Y5V 1.000 PCS C875 065C 4501047TV 0.1UF +80-20% 50V 1.000 PCS C833 065C 4501047TV 0.1UF +80-20% 50V 1.000 PCS C860 065C251K104 2T 0.1UF 250V 1.000 PCS C858 065C251K104 2T 0.1UF 250V 1.000 PCS C857 065C251K104 2T 0.1UF 250V 1.000 PCS C856 065C251K104 2T 0.1UF 250V 1.000 PCS C834 065C251K104 2T 0.1UF 250V 1.000 PCS C873 065C517K102 2T6213 1000PF 10% Z5P 500V 1.000 PCS C867 067C 70109 9T 1UF +-20% 100V 1.
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