Acer H243H manuale d’uso

Acer Acer –LCD-H243H - 0 - Service Manual LCD Monitor Acer H243H[...]

1 1 T able of Content s Important Safety Notice ......................................................................................... 02 01 Product S pecification .......................................................................................... 03 02 Flat Panel S pecification ............................................................[...]

Acer Acer –LCD-H243H 2 Import ant Safety Notice 1. Safety precautions This monitor is manufactured and tested on a ground pr inciple that a user ’s safety comes first. However , improper used or installation may cause damage to the monitor as well as to the user . W arning: z This monitor should be operated only at the corre ct power sources in[...]

Acer Acer –LCD-H243H 3 01 Product S pecification 1. General: H243H is desi gned with LVDS interf ace and VGA/DVI- D/HDMI inpu t, it featured with em bedded universal AC power supplies and audio input. It’s a gree n product and me ets all ROHS standard. Th e powe r button and displ ay control buttons are on th e front of the monitor. The monit o[...]

Acer Acer –LCD-H243H 4 T emperature range : -20°C to 60°C Humidity range : 5% to 90% 2.1.3 Altitude note 2 Operating 10000 ft (T a=50, t=24h) S torage 30000 ft (T a=30, t=24h ) Note 1: T emperature and relative humidity range must be in the are a shown as the following figure due to p anel limited Note 2: Altitude spec must not over pan el spec[...]

Acer Acer –LCD-H243H 5 ≥ 75% (DC output full loadin g and nominal AC input voltag e range) Ripple and Noise Total composite rip ple and noise less than 800 mV for +25V output, and less than 150mV for +5V output, and 50mV for +3.3V output test ed by DC loadin g side parallel wit h a 47uF/EC and 0.1uF/ Ceramic. Capacit ors and measured b and-widt[...]

Acer Acer –LCD-H243H 6 4. Input / Output Signal Specifications 4.1 Video signals Analog RGB signal: 0.7Vp-p (Input impeda nce = 75 Ohm) Sync: TTL level (Input impedance ≧ 1k Ohm) Positive and negative sync of Sep arate Horizont al/V ertical Sync Digital : TMDS Signal: (min) ±200mVpp@24Bit 4.2 Signal Timing Through D-SUB/DVI conn ectors, this u[...]

Acer Acer –LCD-H243H 7 V ertical / Horizontal Sync po larity: positive or negative. If input signal is out of range of horizont al 31~80 KHz or vertical 55-76Hz, or pixel cl ock large than 165MHz, message “Input Not Supported” is shown on scre en. 4.1 DDC dat a H243H Analog H243H DVI 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 0[...]

Acer Acer –LCD-H243H 8 Number of Pixel 1920 × 1080 Pixel Arrangement R.G .B. V ertical S tripe Brightness 300 cd/m 2 (TYP .) Contrast Ratio 1000 (TYP .) Viewing Angle 170(Horizontal) / 160(V ertical) Display Mode Normally White Frame rate 75 Response T ime 5ms (TYP . O N/OFF) / 2ms (Gray to Gray) Surface T reatment Anti-Glare, 3H Lamp 4 Outline [...]

Acer Acer –LCD-H243H 9 FA C T O R Y MODE ● ON Press [e], and then press [POWER] for DC power on. OSD menu will be shown with “F” on the left top. Select “F” for entering factory mode. 5.4 OSD S tructure The On-Scree n Display (OSD) sh all be an easy to use icon based men u through keypad OSD button s or remote control unit. The unit sha[...]

Acer Acer –LCD-H243H 10 OFF ON ACM OFF --- --- OFF VGA --- --- DVI --- --- Input HDMI --- --- --- EMEA NO-EMEA --- --- English English --- --- Russian 繁體中文 -- - --- Deutsch Deutsch --- --- Français Françai s --- --- Español Español --- --- Italiano Italiano --- --- Dutch 简 体中文 --- --- Language Finnish 日本語 --- --- English[...]

Acer Acer –LCD-H243H 11 2. Adjust ISP programming Firstly , double click ISP_T ool_v3.7.5EXE I and open IS P program, then select “Device” , next select manufa cturer model of FW IC, which should be corre spondent with that of PCBA FW IC. Double click Figure One. Secondly ﹐ download FW sof tware: first select “READ”, and then load FW so[...]

Acer Acer –LCD-H243H 12 Thirdly , select “Conne ct” and enter ISP MODE a s in the following Figure 3. Fourthly , select “AUT O”, and keep it s default value. Click “RUN” for beginning program ming. There will b e prompting if programming is OK.[...]

Acer Acer –LCD-H243H 13 Note: if programming fails or su ccess rate is not high, c lick “Config” and adjust it s speed in “E2PROM DEVICE SETTING ” ◆ Flowin g chart Af ter connecting, AC ON, DC ON Open ISP program Choose manufacturer and model of FW IC LOAD FW sof tware Click Connect and enter ISP MODE Click AUTO and RUN for beginning pr[...]

Acer Acer –LCD-H243H 14 2. Flat Panel S pecification[...]

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Acer Acer –LCD-H243H 39 03 Exploded Diagram 3.1 H243H_SCREW_LIST ITEM PN Description Q'T Y(P CS) Fixed T(kg*cm) Remark 1 509146306 200R SCREW ,P ,CROSS,W/W AS ,M3*6,Zn-Cc 7 6.5 ± 0.5 For NVBD/PWRBD/HDMI 2 509216608 1 10R SCREW ,F ,CROSS,M4*8,B LACK,NL,ROHS(NYLOK ) 4 12 ± 1 For Hingle toBack cov er 3 509412610 500R SCREW B CROSS T T -4*10 B[...]

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Acer Acer –LCD-H243H 40 04 T roubleshooting 4.1 No Power & LED Off yes yes yes yes NG NG NG NG NG NG Unstable power Check sampling Circuit Check F801, R808,R806 Change F801, R808,R806 Check the R pin voltage of IC803 about 2.5V Check R832,IC801 Check FB801,D803,C8 07,C810 if short Change FB801,D803,C807, C810 Check pin6 of IC802 voltage is 14[...]

Acer Acer –LCD-H243H 41 4.2 No raster[...]

Acer Acer –LCD-H243H 42 4.2 Black screen Check power supply: Pin 1, 2 of CN104 POWER Fail Check U101, U102 Check C161, R183 Check X101, C156, C157,R191 Inverter Fail U104 fail Black Screen Check Q102, R101, R102 Check power supply: For U104 Check reset: pin 8 of U104 Check Crystal waveform Pin 25,26 of U104 Check CCFL_Enable Pin 101 of U104 Check[...]

Acer Acer –LCD-H243H 43 4.4 Bad Screen Bad Screen Check LVDS cable Change L VDS cable Check Crystal: Pin 25,26 of U104 Workmanship LVDS cabl e NG Check the pins of U104 Change X 101, C15 6, C157 OK OK OK NG NG NG[...]

Acer Acer –LCD-H243H 44 4.5 White screen White Screen Check LVDS Cable Insert OK? Change LVDS Cable Check VLCD is +5V? Check Panel Enable of U104 Check Q101, Q104, Q105, R105, R108 Check LVDS cable U104 Fail Workmanship LVDS cable NG Panel NG Q101, Q104, Q105, R105, R108 fail OK OK OK OK NG OK NG NG NG NG NG[...]

Acer Acer –LCD-H243H 45 05 S p are p a rt s List 82424171A120R OEM PART NO DES CRIPTION MOQ N/A 792381300701R PCBA,I/F B OARD(EM EA,W/SPK),LP2441-717 RO 50 1 792381400700R PCBA,P/I BOARD, W/SPK,LP2441-717 ROHS 50 1 792381500000R PCBA,POWER KYE PAD/B,LP2441 ROHS 50 1 792381500010R PCBA,TOUCHPAD BOARD,LP2441 ROHS 50 1 453070801190R PWRCORD 16A /250[...]

Acer Acer –LCD-H243H 46 06 Schematics and Layout s 6.1 PI BD Layout[...]

Acer Acer –LCD-H243H 47 6.2 Switching Mode Power Supply circuit[...]

Acer Acer –LCD-H243H 48 7.0 Assembly and Disassembly The tool of Assembl y and disassembly : 1) El ectrost atic gloves 2) Electric screw driver: the lengthe of screwd river top is 6±0.5 cm and 15±0.5cm ; the diameter of screwdriver top is Φ 5*H5mm[...]

Acer Acer –LCD-H243H 49 Assembly and Disassembly (continue)[...]

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Acer Acer –LCD-H243H 53 Assembly and Disassembly (continue)[...]