Table of Contents
Advertisement
Quick Links
LCD Color Monitor
Service
Service
Service
Description
Table Of Contents...................................................1
Revision List..........................................................2
Important Safety Notice............................................ 3
1. Monitor Specification..................................................4
2. LCD Monitor Description........................................5
3. Operation Instructions..................................................6
3.1. General Instructions..................................................6
3.2. Control Button....................................................6
3.3 Adjusting the Picture............................................7
4. Input/Output Specification.......................................11
4.1. Input Signal Connector.........................................11
4.2. Factory Preset Display Modes...........................12
4.3. Panel Specification.........................................13
5. Block Diagram............................................................16
5.1 Software Flow Chart.........................................16
5.2.Electrical Block Diagram...............................18
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
6. Schematic.............................................................20
6.1 Main Board..........................................................20
6.2 Power Board.................................................24
6.3 Key Board....................................................26
7. PCB Layout...........................................................27
7.1. Main Board.........................................................27
7.2. Power Board........................................................28
7.3. Key Board............................................................29
8. Maintainability........................................................30
8.1.Equipments and Tools Requirement......................30
8.2.Trouble Shooting.................................................32
9. White-Balance, Luminance adjustment.................38
10. Monitor Exploded View....................................40
11. BOM List...............................................................41
SAFETY NOTICE
1
ENVISION P851
Horizontal Frequency
30-80 kHz
Page
Advertisement
Table of Contents
Related Manuals for Philips ENVISION P851
Summary of Contents for Philips ENVISION P851
-
Page 1: Table Of Contents
LCD Color Monitor ENVISION P851 Service Service Service Horizontal Frequency 30-80 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents…………………………………………...1 6. Schematic……………..........20 Revision List………………………………………………..2 6.1 Main Board..………..........20 Important Safety Notice.……......……..3 6.2 Power Board………………………………………..24 1. Monitor Specification......…………..4 6.3 Key Board…………………...….……………………26 2. -
Page 2: Revision List
LCD Color Monitor ENVISION P851 Revision List Version Date Revision History TPV Model Name DEM.-31-2008 Initial release T8RCM6NDXNE1HNJ... -
Page 3: Important Safety Notice
LCD Color Monitor ENVISION P851 Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. -
Page 4: Monitor Specification
LCD Color Monitor ENVISION P851 1. Monitor Specification Model number P851 Driving system TFT Color LCD Viewable Image Size 470mm diagonal Pixel pitch 0.3mm(H) x 0.3mm(V) LCD Panel Video R, G, B Analog interface Separate Sync. H/V TTL Display Color 16.7M Colors... -
Page 5: Lcd Monitor Description
LCD Color Monitor ENVISION P851 2. LCD Monitor Description The LCD Monitor will contain main board, power board, 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 6: Operation Instructions
LCD Color Monitor ENVISION P851 3. Operation Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. -
Page 7: Adjusting The Picture
LCD Color Monitor ENVISION P851 3.3 Adjusting the Picture OSD Settings 1.Press the MENU-button to activate the OSD window. 2.Press+ or - to navigate through the functions. Once the desired function is highlighted, press the MENU-buttonto activate it.If the function selected has a sub-menu, press or again to navigate through the sub-menu functions.Once the desired function is highlighted, press MENU-button to activate it. - Page 8 LCD Color Monitor ENVISION P851 OSD functions Luminance Adjust Range Description Brightness 0-100 Backlight Adjustment Contrast 0-100 Contrast from Digital-register. Standard Standard Mode Text Text Mode Eco mode Internet Internet Mode Game Game Mode Movie Movie Mode Sports Sports Mode...
- Page 9 LCD Color Monitor ENVISION P851 Recall Cool Color Temperature Cool 9300K from EEPROM. Recall SRGB Color Temperature sRGB from EEPROM. User-R Red Gain from Digital-register User User-G Green Gain Digital-register. User-B Blue Gain from Digital-register Color Boost Disable or Enable Full Enhance...
- Page 10 LCD Color Monitor ENVISION P851 Auto Config yes or no Auto adjust the picture to default Select wide or 4:3 format for Image Ratio wide or 4:3 display DDC-CI yes or no Turn ON/OFF DDC-CI Support Show the information of the main...
-
Page 11: Input/Output Specification
LCD Color Monitor ENVISION P851 4. Input/Output Specification 4.1 Input Signal Connector 15 - Pin Color D-Sub Signal Cable Pin No. Description Pin No. Description Green Detect Cable Blue Ground Ground DDC-Serial Data Ground H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock... -
Page 12: Factory Preset Display Modes
LCD Color Monitor ENVISION P851 4.2 Factory Preset Display Modes Horizontal Vertical Stand Resolution Frequency(KHz) Frequency(Hz) 640×480 @60Hz 31.469 59.940 640×480 @67Hz 35.000 66.667 640×480 @72Hz 37.861 72.809 640×480 @75Hz 37.500 75.000 Dos-mode 720×400 @70Hz 31.469 70.087 Dos-mode 640×400 @70Hz 31.469... -
Page 13: Panel Specification
LCD Color Monitor ENVISION P851 4.3. Panel Specification 4.3.1 General Feature CLAA185WA02 is 18.51” color TFT-LCD (Thin Film Transistor Liquid Crystal Display) module composed of LCD panel, driver ICs, control circuit and backlight. By applying 6bit+Hi-FRC digital data,1366*768, 16.7M-color images are displayed on the 18.51”... - Page 14 LCD Color Monitor ENVISION P851 4.3.2 Optical Characteristics Ta=25℃，VCC=5.0V 4.3.3 Electrical Characteristics (1).TFT-LCD...
- Page 15 LCD Color Monitor ENVISION P851 (2).Backlight...
-
Page 16: Block Diagram
LCD Color Monitor ENVISION P851 5. Block Diagram 5.1 Software Flow Chart... - Page 17 LCD Color Monitor ENVISION P851 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 18: Electrical Block Diagram
LCD Color Monitor ENVISION P851 5.2 Electrical Block Diagram Main Board LCD PANEL Crystal14.31818MHz (CN301) (X401) FLASH ROM Scalar IC TSUM5PFHL-LF MSTAR SST25LF020A (U401) (U402) H sync V sync EEPROM Key Board D-Sub M24C16-WMN6TP Control Connector Connector (U403) (CN402) (CN102) - Page 19 LCD Color Monitor ENVISION P851 Power Board Bridge Rectifier Transformer Rectifier diodes EMI filter and Filter CN902 Start Circuit: R904,R932 Feedback Circuit Control IC ON/OFF Output MOSFET Circuit Transformer Lamp Over ON/OFF Feedback Voltage Control Circuit Control IC...
-
Page 20: Schematic
LCD Color Monitor ENVISION P851 6. Schematic 6.1 Main Board 715G2883 1 6 FB102 MVCC_1 VGA_B+ R105 100R 1/16W 5% C102 DSUB_B+ BEAD 0.047uF H_Sy nc R102 0R05 1/10W 5% R103 1K 1/16W 5% R108 C105 DSUB_H V_Sy nc R104 1K 1/16W 5%... - Page 21 LCD Color Monitor ENVISION P851 CMVCC VCC1.8 C710 0.1uF 16V FB702 300 OHM CN701 VCC3.3 C705 C704 SM340A D701 MVCC 0.1uF/16V 100UF25V CMVCC Q702 CMVCC MMBT2907AK R705 BKLT-VBRI R709 BKLT-EN R710 NC 10K 1/16W 5% PANEL_ID# PANEL_ID# 2 Volume# Q703...
- Page 22 LCD Color Monitor ENVISION P851 VCC1.8 VDDC VDDP FB403 VCC3.3 FB401 AVDD VCC3.3 FB402 VPLL VCC3.3 VCC1.8 0 OHM +-5% 1/8W C412 300OHM 300OHM VCC3.3 C409 C408 C403 C404 C406 C402 Del C209 C410 C411 0.1uF/16V C407 0.1uF/16V 10UF50V 0.1uF/16V C405 0.1uF/16V...
- Page 23 LCD Color Monitor ENVISION P851 CN301 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P LVB0M RXO0- LVA3P LVB3M LVB0P RXO0+ LVA3M LVBCKP LVB1M RXO1- LVACKP LVBCKM LVB1P RXO1+ CN302 LVACKM LVB2P LVB2M RXO2- LVA2P LVB2M LVB2P RXO2+ LVA2M LVB1P LVBCKM RXOC- RXOC+ LVBCKP...
-
Page 24: Power Board
LCD Color Monitor ENVISION P851 6.2 Power Board 715G2852 3 4 R918 100 OHM 1/4W L904 R919 +12V 1.0uH 100 OHM 1/4W C912 ZD902 0.001uF C930 RLZ13B R920 C922 R946 100 OHM 1/4W 470PF50V 150 OHM 2W 0.1uF C917 C918... - Page 25 LCD Color Monitor ENVISION P851 CONN C839 T801 R821 1500PF/50V POWER X'FMR R817 1K 1/8W 10K 1/10W 1% CN801 R855 D805 15R 1/4W LL4148 C819 C801 F801 0.0022uF 30PF3KV +12V 0 OHM 1/4W C802 R804 Q801 470UF/25V C824 R856 R801...
-
Page 26: Key Board
LCD Color Monitor ENVISION P851 6.3 Key Board 715G3331 1 R001 0R05 1/10W 5% LBADC1 R002 2K 1/10W LBADC2 CONN R003 2K 1/10W R004 1K 1/10W 5% SW002 SW004 SW001 SW005 Title <Title> Size Document Number <Doc> <Rev Code> Date:... -
Page 27: Pcb Layout
LCD Color Monitor ENVISION P851 7. PCB Layout 7.1 Main Board... -
Page 28: Power Board
LCD Color Monitor ENVISION P851 7.2 Power Board... -
Page 29: Key Board
LCD Color Monitor ENVISION P851 7.3 Key Board... -
Page 30: Maintainability
LCD Color Monitor ENVISION P851 8. Maintainability 8.1 Equipments and Tools Requirement 1. Multi-meter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with and Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer. 7. Service Manual. 8. User Manual. If the monitor fails to operate correctly , please follow the steps below for a possible solution. - Page 31 LCD Color Monitor ENVISION P851 Problem & Question Possible Solutions • Make sure the power button is ON and the Power Cord is properly connected to a Power LED Is Not ON grounded power outlet and to the monitor. • In order for the Plug & Play feature of the monitor to work, you need a Plug & Play No Plug &...
-
Page 32: Trouble Shooting
LCD Color Monitor ENVISION P851 8.2 Trouble Shooting 8.2.1 Main Board No power No power Press power key and look if the picture is normal Sense Resistor Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the Adapter/Inverter section Measure C704 (+) =1.8V... - Page 33 LCD Color Monitor ENVISION P851 No picture (LED orange) No picture The button if under control Replace the key button Measure C704 (+) =1.8V U701 PIN2=3.3V Check CN701 or replace Q702, Q703, and U701 X401 oscillate waveform is normal Replace X401...
- Page 34 LCD Color Monitor ENVISION P851 White screen White screen Measure U301 base X401 oscillate waveform is normal is low level? Replace X401 Check U301 Q302 is Check reset circuit of broken? U401 is normal Check Correspondent Check Correspondent component. component.
- Page 35 LCD Color Monitor ENVISION P851 8.2.2 Power Board No power Check L904 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin8 of IC901...
- Page 36 LCD Color Monitor ENVISION P851 No backlight Check the input voltage of 12V Check adapter and F801 Check ON/OFF signal Check Interface board or main board Check IC801 PIN12=12V Change on/off circuit Check IC801 PIN5 have triangle wave Change IC801...
- Page 37 LCD Color Monitor ENVISION P851 8.2.3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Is Key Pad Board normally? Replace Key Pad Board...
-
Page 38: White-Balance, Luminance Adjustment
9300K color temp. parameter is x = 283 ±30, y = 297 ±30, Y>130cd/m 3. Into Factory mode of ENVISION P851: 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 39 LCD Color Monitor ENVISION P851 5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100 6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100 7. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2 C.
-
Page 40: Monitor Exploded View
LCD Color Monitor ENVISION P851 10. Monitor Exploded View... -
Page 41: Bom List
LCD Color Monitor ENVISION P851 11. BOM List T8RCM6NDXNE1HNJ Location Part No. Description Remark 040G 58160811A GREEN DOT LABEL 040G 58162461A EPA LABEL 045G 77 3 PE PACKING 052G 1150 C INSULATING TAPE 052G 1186 SMALL TAPE 052G 1207 A Conductive Tape 45mm *25mm *0.08mm... - Page 42 LCD Color Monitor ENVISION P851 CN102 088G 35424F D DVI 24PIN CONN F ATTACHED SCREW CN102 088G 35424F J DVI 24PIN CONN F ATTACHED SCREW 2nd source DVI 24PIN CONN F 附螺丝 CN102 088G 35424F N 2nd source X401 093G 22 53 J 14.31818MHZ/32PF/49US...
- Page 43 LCD Color Monitor ENVISION P851 R127 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R126 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R101 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R105 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R109 061G0402101 RST CHIPR 100 OHM +-5% 1/16W...
- Page 44 LCD Color Monitor ENVISION P851 R419 061G0402121 RST CHIP 120R 1/16W 5% R420 061G0402121 RST CHIP 120R 1/16W 5% R106 061G0402222 RST CHIPR 2.2 KOHM +-5% 1/16W R107 061G0402222 RST CHIPR 2.2 KOHM +-5% 1/16W R401 061G0402390 0F RST CHIP 390R 1/16W 1%...
- Page 45 LCD Color Monitor ENVISION P851 C404 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C403 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C302 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C301 065G0402104 15 MLCC 0402 0.1UF K 16V X5R...
- Page 46 LCD Color Monitor ENVISION P851 FB401 071G 56V301 M CHIP BEAD 2012 300 OHM FB402 071G 56V301 M CHIP BEAD 2012 300 OHM FB404 071G 56V301 M CHIP BEAD 2012 300 OHM FB104 071G 59G301 CHIP BEAD 300OHM FB105 071G 59G301...
- Page 47 LCD Color Monitor ENVISION P851 J44G9003220 35 CORNER PAPER J45G 88626 1 PE BAG FOR MONITOR J52G 1185 E1 BIG CARTON TAPE FOR ENVISION J70G9002673 1B CD MANUAL KEPC8QG9J KEPC BOARD SW002 077G 600 1 CJ TACT SWITCH SW004 077G 600 1 CJ...
- Page 48 LCD Color Monitor ENVISION P851 ℃ C802 067G215D4714KV E.C 105 CAP 470UF M 25V ED SERIES 2nd source ℃ C918 067G215D6814KV CAP 105 680uF M 25V 2nd source ℃ C917 067G215D6814KV CAP 105 680uF M 25V 2nd source ℃ C940...
- Page 49 057G 760 5B PDTC144WK SOT346 2nd source Q802 057G 763 14 AM9945N 2nd source Q809 057G 763904 TRA FET 2N7002 SOT-23 PHILIPS R823 061G0603000 RST CHIP MAX 0R05 1/10W R824 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R827 061G0603100 1F...
- Page 50 LCD Color Monitor ENVISION P851 R853 061G0603683 RST CHIPR 68K OHM +-5% 1/10W R803 061G0603684 RST CHIPR 680 KOHM +-5% 1/10W R802 061G0603820 1F RST CHIPR 8.2 KOHM +-1% 1/10W JR902 061G0805000 RST CHIP MAX 0R05 1/8W R831 061G0805100 1F...
- Page 51 LCD Color Monitor ENVISION P851 C932 065G0603102 32 1000PF +-10% 50V X7R C842 065G0603103 32 CAP CHIP 0603 0.01UF K 50V X7R C807 065G0603104 22 CAP CHIP 0603 0.1UF K 25V X7R C821 065G0603104 22 CAP CHIP 0603 0.1UF K 25V X7R...
- Page 52 LCD Color Monitor ENVISION P851 R908 061G152M10452T RST MOFR 100KOHM +-5% 2WS R946 061G152M15152T RST MOFR 150 OHM +-5% 2WS R914 061G152M47852T RST MOFR 0.47 OHM +-5% 2WS C906 065G 2K152 2T6213 CAP CER 1500PF K 2KV C903 067G 2152207NT...
- Page 53 LCD Color Monitor ENVISION P851 Q15G0346Z01 mainframe Q33G0264ABJ 1L osd button 2nd source Q33G0265 1 1D power lens Q33G0266AED 1L power BUTTON Q34G0518AED 1L9090 STAND Q34G0520AEDA1L9090 bezel 18.5 Q34G0521ABJZ1L9090 rear cover Q34G0522ABJ 1L9090 REAR POWER COVER Q34G0523AED 1L9090 base Q37G0115012...