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background image

VOL-
DEC

VOL+
INC

MENU

DOWN

UP

OK

POWER

IR

LED

2202129900

5VD

LED_G

IR_IN

KEY1_OK
KEY2_UP

KEY5_DEC

KEY0_MENU

KEY3_DOWN
KEY4_INC

LED_R

PWRON

GND

GND

GND

GND

P711

CON6_2mm

1
2
3
4
5
6

D711

S701

I711

CAM-1538TP5

1

2

3

VOUT

GND

VCC

S705

S702

S703

S704

S706

S707

P701

CON7_2mm

1
2
3
4
5
6
7

D721

NC

S721

I721
NC

1

2

3

VOUT

GND

VCC

6.14 Key-Pad IR

ViewSonic Corporation

Confidential - Do Not Copy

N2750w-1

24

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Содержание N2750w-1

Страница 1: ...Service Manual ViewSonic N2750w 1 M Model No VS10576 1M 27 LCD TV N2750w 1M_SM Rev 1a Apr 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583...

Страница 2: ...nd specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in...

Страница 3: ...tions 4 4 Exploded View and Parts List 8 5 Block Diagram 10 6 Schematic Diagrams 11 7 Working Theorem 25 8 Wiring Diagram 27 9 PCB Layout Diagrams 28 10 Trouble Shooting Flow Chart 36 11 Adjustment 40...

Страница 4: ...ician Always unplug the LCD TV before cleaning it Clean the cabinet with a clean dry cloth Apply non ammonia based cleaner onto the cloth not directly onto the glass screen Keep the LCD TV away from m...

Страница 5: ...y Color 16 7M Color Max 8bit color Viewing Angle CR 10 Horizontal 85 85 Vertical 85 85 Contrast Ratio 1000 1 typical Brightness 550 cd m2 typical Response Time 8ms typical gray to gray Active Display...

Страница 6: ...080ms 0 064ms V Border 0 254ms 0 000ms 0 000ms 0 254ms H V Sync Interlace No No No No ITEM 5 6 7 8 TIMING 800 600 56HZ 800 600 60HZ 800 600 72HZ 800 600 75HZ Pixel Rate 36 000MHZ 40 000MHZ 50 000MHZ 4...

Страница 7: ...TOTAL 13 417ms 16 666ms 14 272ms 13 328ms V DISPLAY 12 549ms 15 880ms 13 599ms 12 795ms V B Porch 0 784ms 0 600ms 0 513ms 0 466ms Vs Width 0 060ms 0 124ms 0 106ms 0 050ms V Border 0 00ms 0 000ms 0 00...

Страница 8: ...pin assignments for DVI cable DVI 24 pins DVI connector is designed to match with DVI D digital signal cable the pin assignment is as the following Pin Signal Assignment Pin Signal Assignment Pin Sig...

Страница 9: ...11 X3 X3 1F11 1F11 X2 1F01 1F12 X4 1F06 X4 IR PCB ASS Y 1F12 X6 1F12 X4 AUDIO PCB ASS Y 1F28 X2 1F26 1F25 1F29 X2 1F19 X2 1F21 X4 1F21 1F13 X2 1F32 1F14 X3 5B02X6 5B01 X4 5B03 2C01 2C05 2C03 2C04 2C06...

Страница 10: ...F25 M SCW 0824 0811 2080003700 SCREW SPE 1SZZTER001A M3 6LMSWR17 FZMY1 8 8 1F26 N A 2027259002 DUST COVER JC278 ABS 94HB BLACK 4001 1 1 1F27 N A 2044266601 FUNCTION KEY JC278 ABS 94V0 AL PLATE FUNCTI...

Страница 11: ...r w de interlace trumpion p HD t0932 LVDS Tx PC Audio In YPbPr Audio In AV Audio In TV AV Audio Out L R L R VGA input CCIR656 RGB 24bits A port B port I2C Control To Panel ANT DVI HDCP interface SiI16...

Страница 12: ...2 1 VI VO ADJ R116 NC R104 10K R117 0R C118 47uF 16V C119 220uF 16V R111 4K7 C116 100n L108 40uH I103 SAKEN 8050SD 1 3 5 2 4 VIN GND ON OFF OUTPUT FEEDBACK D103 MS22 1 2 C114 100n R509 0R Q111 SI9933A...

Страница 13: ...25 510R R127 4K7 RP03 47RX4 1 5 2 6 3 7 4 8 ODD RED ODD GREEN ODD BLUE EVEN RED EVEN GREEN EVEN BLUE I105 SII169 10 11 12 13 14 15 16 17 20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37 49 50 51 52 53...

Страница 14: ...100n C165 100n C172 100n C169 100n P107 RCA JACK 1X3 1 2 3 4 5 6 C170 100n C177 100n C178 100n C186 100n C187 100n C188 100n C189 100n C190 100n C191 100n R166 100R I109 AD9883KST 110 54 48 43 49 38...

Страница 15: ...NC L126 BEAD 200R I111 FQ 1236MK3 2 3 4 5 6 11 12 13 14 9 7 8 15 16 1 10 NC VTout Vb 5V SCL SDA AS 2ndIFout CVBSout VIF 5V AFout AF R TH1 TH2 TH3 TH4 NC AGC AF L C202 10uF 50V R189 100R L125 BEAD 200R...

Страница 16: ...50V L131 BEAD 200R C240 33p C239 33p X101 18 432MHz L133 NC L139 BEAD 200R C244 100p C234 330P C235 330P C236 NC 10uf 50V R221 10K L138 BEAD 600R C245 100p C223 56p I114 MSP3425G_LQFP64 50 51 47 44 45...

Страница 17: ...AVD3 AGND1 AGND2 AGND3 RmidBP GmidBP BmidBP REFBP VD_PLL1 GND_PLL1 GND_PLL2 GND_PLLD VD_PLLD VD_PLL2 FILT TPAD SDA SCL RSTn I2C_Addr MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8 MA9 MA10 MA11 BA0 BA1 MCLK WEn...

Страница 18: ...MA6 MA7 MA8 MA9 MA10 MA11 BA0 BA1 MCLK WEn CASn RASn CSn MD0 MD1 MD2 MD3 MD4 MD5 MD6 MD7 MD8 MD9 MD10 MD11 MD12 MD13 MD14 MD15 Rout7 AD2_7 Rout6 AD2_6 Rout5 AD2_5 Rout4 AD2_4 Rout3 AD2_3 Rout2 AD2_2 R...

Страница 19: ...68 67 2 4 5 7 8 10 11 13 74 76 77 79 80 82 83 85 25 26 27 60 61 62 63 64 65 66 24 6 52 46 38 32 12 31 33 34 36 37 39 40 42 45 47 48 50 51 53 54 56 28 59 22 23 29 43 3 9 35 41 49 55 75 81 78 84 86 72 5...

Страница 20: ...0R CP05 NC CP06 NC R396 100R I129 NC 51 52 54 55 56 2 3 4 6 7 8 10 11 12 14 15 16 18 19 20 22 31 32 48 47 46 45 42 41 40 39 44 49 43 36 34 35 33 5 13 21 29 53 1 9 17 26 50 23 24 25 27 28 30 38 37 TXIN...

Страница 21: ...0 1u 16V 0603 R410 10K C514 NC P116 NC 1 2 3 4 R409 NC R398 NC C522 NC R408 NC C519 1u 16V 0603 C524 47uF 16V R416 68K I131 TPA6110A2 1 2 3 4 5 6 7 8 BYPASS GND STANDBY IN2 VO2 VDD VO1 IN1 C525 1u 16V...

Страница 22: ...126 125 124 123 122 121 66 2 26 51 1 75 15 102 79 107 119 62 86 27 28 29 30 91 90 92 93 94 95 96 97 103 110 109 111 112 108 38 104 71 72 73 74 P00 P01 P02 P03 P04 P05 P06 P07 P10 P11 P12 P13 P14 P15 P...

Страница 23: ...F 50V C609 10uF 50V AP8210Q PLQFP64 I601 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 24 23 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40...

Страница 24: ...0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 N C VREFL VSSL MUTE SLEEP PROT N C TPP TEST VSSR VREFR N C VDDR INR NFINR NFPR NFNR N C CDOR CDIR N C SENSENR SENSEPR PVDDR PVSSR N C HP_R HN_R...

Страница 25: ...Y0_MENU KEY3_DOWN KEY4_INC LED_R PWRON GND GND GND GND P711 CON6_2mm 1 2 3 4 5 6 D711 S701 I711 CAM 1538TP5 1 2 3 VOUT GND VCC S705 S702 S703 S704 S706 S707 P701 CON7_2mm 1 2 3 4 5 6 7 D721 NC S721 I7...

Страница 26: ...SPS A D converters in the t0956 chip can be used for digitalizing RGB from PC or YPbPr component signals as well Piior to each channel contains the AGC and clamping circuits with paogrammable gain and...

Страница 27: ...ation PWMs Pulse Width Modulators from 28K to 100Hz E Audio Three audio sources put into MSP 3425G or MSP 3445G which fist select the sources and do pre amplify The bass rrelbe control also be provide...

Страница 28: ...115 P105 P106 P107 P122 P112 P118 P701 P711 P601 P602 P603 P108 P111 P117 P113 P116 P110 IR PCB AUDIO PCB CN2 CN3 CN1 P908 P905 W901 SPK R SPK L W901 P906 P907 P123 LCD PANEL LCD PANEL 8 Wiring Diagra...

Страница 29: ...9 PCB Layout Diagrams 9 1 MAIN PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 28...

Страница 30: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 29...

Страница 31: ...9 3 AUDIO PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 30...

Страница 32: ...9 4 AUDIO PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 31...

Страница 33: ...9 5 KEYPAD PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 32...

Страница 34: ...9 6 KEYPAD PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 33...

Страница 35: ...9 7 IR PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 34...

Страница 36: ...9 8 IR PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N2750w 1 35...

Страница 37: ...Board Start 12V On C101 5V on C106 5V on C115 Check I101 D101 I104 I1 10 Check I103 D103 I114 I131 3 3V on C119 No Yes No No No Yes Yes Yes 3 3V on C145 Yes 2 5V on C431 Check I105 I128 Check I109 Che...

Страница 38: ...k I113 Pin3 Pin13 Check I114 Pin20 Pin21 TV AV S Video YCbCr No No No Yes Yes Yes Replace I113 Check I601 Pin13 Pin14 Replace I114 No Yes Yes No Check P111 Pin2 Pin5 PC Check Audio input Yes Check I60...

Страница 39: ...ignal at RP30 TV mode AV mode S Video mode YCbCr mode No No No No Yes Yes Yes Yes Replace X103 Check I116 has output signal at RP31 Check L142 is 3 3V Check I123 has out put signal at RP18 RP23 Replac...

Страница 40: ...38 Press menu Key if osd display Check Keypad pcb is ok Check Reset circuit Check inverter is OK Change Inverter Check I123 has output signal at RP18 RP23 Check I123 I127 X105 Check panel power is 5V...

Страница 41: ...he front detail specifications 1 Eeprom Initial A Timing 1024x768 60Hz B Pattern Cross hatch C Switch off the power and press the and key simultaneously and switch on the power At this time we can ent...

Страница 42: ...0 271 0 03 y 0 278 0 03 Y 300 cd m 2 H Press menu key select the OSD page on INPUT SELECT and select MAIN YPbPr Input source DVD Player Pattern color bar I Repeat the F and G step ViewSonic Corporati...

Страница 43: ...P81 1 12 Electronic LCD Panel CMO V270W1 L03 E 00001795 2212006100 1 13 Hardware Bracket Fix JC278 Base Aluminum Black 4001 HW 00001796 2071870401 1 14 Carton Box ViewSonic N2750W VS10576 1M P 0000179...

Страница 44: ...1798 2012177500 POLYFOAM JC278 EPE UP L 6P20 1 40 P 00001799 2012177600 POLYFOAM JC278 EPE UP R 6P21 1 41 P 00001800 2012178400 POLYFOAM JC278 EPE DOWN 6P22 1 42 N A 2055135010 LABEL VIEWSONIC N2750W...

Страница 45: ...5 T C472 1 82 N A 2346747496 CAP CHIP 85 C CS 0603 Y5V 16V 0 47u Z T C523 C616 2 83 E C 0404 3816 2346110296 CAP CHIP 125 C CS 0603 X7R 50V 1000p K T C556 C557 2 84 N A 2346115396 CAP CHIP 125 C CS 0...

Страница 46: ...6 148 N A 2379360196 BEAD HI IMPEDANCE Z 600ohm 100MHZ 0603 200mA L129 L130 L134 L135 L136 L137 L138 L140 L141 9 149 E R 0405 6600 2253200096 RES CHIP 1 10W RC 0603 1 10W 0 ohm J T L142 L143 R117 R131...

Страница 47: ...ohm J T R130 R132 R134 R136 R163 5 208 E R 0405 6409 2253210196 RES CHIP 1 10W RC 0603 1 10W 100 ohm J T R137 R150 R151 R152 R153 R164 R166 R167 R172 R174 R175 R189 R190 R219 R220 R242 R243 R368 R369...

Страница 48: ...ohm J T R674 1 245 E R 0405 6422 2259247008 RES CHIP NETWORKS 8P4R 1 16W 47 ohm J P 0 8 RP01 RP02 RP03 RP04 RP05 RP06 RP07 RP08 RP09 RP10 RP11 RP12 EP18 RP19 RP20 RP21 RP22 RP23 20 246 M SW 0815 0182...

Страница 49: ...7 Working Theorem 8 Wiring Diagram 9 PCB Layout Diagrams 10 Trouble Shooting Flow Chart 11 Adjustment 12 Recommended Spare Parts List B Are you satisfied with this Service Manual Item Excellent Good...

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