Acer X223 X223W LCD Service Guide - Page 6

1. Product Specification (continued) ACER X223W 5 Go to cover page 1.3.4.3 Mode Recognition Pull-in The monitor shall recognize preset modes within a range of +/-1KHz whichever is less for horizontal ; and within +/-1Hz for vertical. 1.3.4.4 User Display Modes In addition to the factory pre-set video modes, provisions shall be made to store up to 9 user modes. If the current mode is a user mode, the monitor shall select its previously stored settings. If the user alters a setting, the new setting will be stored in the same user mode. The user modes are not affected by the pre-set command. If the input signal requires a new user mode, storage of the new format is automatically performed during user adjustment of the display (if required, please see Note.(4) ) Preset Timing Chart Item No 1 102 2 103 3 182 R eso lu tio n 720 x 400 (70Hz) 640 x 480 (59.94Hz) 640 x 480 (66.66Hz) H-Sync (KHz) 31.469 31.469 35 Band Width (M H z) 28.322 25.175 30.24 Polarity H V - + - - - - 4 173 640 x 480 (72Hz) 37.861 31.5 - - 5 109 640 x 480 (75Hz) 37.5 31.5 - - 6 648 x 500 (57.7Hz) 31.234 25.175 + + 7 104 800 x 600 (56.25Hz) 35.156 36 + + 8 116 800 x 600 (60Hz) 37.879 40 + + 9 117 800 x 600 (72Hz) 48.077 50 + + 10 110 800 x 600 (75Hz) 46.875 49.5 + + 11 108 832 x 624 (74.55Hz) 49.722 57.28 - - 12 118 1024 x 768 (60Hz) 48.363 65 - - 13 157 1024 x 768 (70Hz) 56.476 75 - - 14 141 1024 x 768 (75Hz) 60.023 78.75 + + 15 126 1152 x 864 (75Hz) 67.5 108 + + 16 161 1280 x 960 (60Hz) 60 108 + + 17 179 1280 x 1024 (60Hz) 63.981 108 + + 18 131 1280 x 1024 (75Hz) 79.976 135 + + 19 1680 x1050(60Hz) 65.3 146.25 - + NOTE : (1) 76 ≦ FV ≦ 86 : monitor can display but doesn't guarantee. (2) fV < 55, or fV > 86 : warning invalid mode. (3) Factory model : After we first burn the code into the flash, every preset-model we run first must do auto-adjusting. Then it'll not do auto-adjust again when we changed preset-mode back including AC on/off DC on/off. The only way that preset-mode do auto-adjust again is press '' Internal Factory Reset''. (4) User mode : The code should memorize 9 timing mode exclusive of preset-modes as use mode and do auto-adjusting. W hen user set a new mode that is not among previously. It'll do auto-adjusting then be solved to user modes. The new mode will overwrite the first memorized user modes. The user modes be cleared is same as Factory mode. Just do '' Internal Factory Reset''. (5) Internal Factory Reset and OSD Factory Reset behavior. 1.3.5 Controller Requirements 1.3.5.1 General Requirements The monitor shall include a controller capable of converting the analog RGB signal from a standard SXGA resolution video controller in the CPU to a signal which can be displayed on the panel. The controller will include a PLL, A/D converters, LVDS transmitter and other circuitry necessary to perform its function. The PLL shall be stable enough to ensure that a static image from the CPU is placed in the same physical location on the flat panel in each frame. 1.3.5.2 Video Stretching The monitor shall contain provisions to "stretch" the video signal, so that an input signal from the computer in any resolution smaller than 1680 x 1050 is automatically expanded to fill the entire screen. 1.3.5.3 Panel Timing and Interface The controller supplied with the monitor shall control all panel timing. This controller shall adequately insulate the monitor from the computer, so that no possible combination of input signals from the computer shall cause damage to the flat panel or any other component of the monitor. The LCD panel interface shall support the TFT standard. 1.3.6 DC - AC Inverter Requirements The DC-AC inverter is on the power board. The frequencies used by the DC-AC inverter used to power the backlight shall be chosen so as to prevent any noticeable effects on the flat panel (such as a rolling effect). 1.3.7 Power Supply Requirements The AC to DC converter power supply for the monitor shall be an external AC to DC converter "brick" This brick shall have an IEC receptacle for main power input and a pin - in -socket for DC power out. The brick shall provide sufficient power for both the monitor and the backlight assembly, and shall meet requirements specified in Table 2. Input Voltage Range Input Frequency Range Power Consumption Line Fuse Initial Cold Start Inrush Current Hot Start Cycle Under Voltage Line Transient Table 2 AC to DC Converter Requirements The operating range shall be from 90 to 132 and 195 to 265 AVC sinusoidal for all models specified. Input power frequency range sha;; be from 47.5 to 63 Hz over the specified input voltage range. Power consumption for the monitor shall be less than 46W over the specified voltage and frequency ranges. In suspend or sleep mode the power consumption will be less than 2W. The AC input shall be fused and become electrically open as a result on an unsafe current level. The fuse many not be user replaceable. The power supply shall start and function properly when under full load, with worst case conditions of input voltage, input frequenct, operating temperature, and cold backlight lamps. The inrush current must be limited to 30A when operated at 120VAC, and 50A when operated at 220VAC. Inrush current is measured at an ambient temperature of 25oC, with the unit temperature stabilized in the power-off. The power supply shall be damaged when switched ON for one second and OFF for one second for seven consecutive after operating for one hour at full load, 25oC, and nominal input line voltage. The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in this table shall not cause damage to the power supply unit nor cause failure of the input. The power supply shall operate within IEC 801-4 (± 1KV) and IEC 801-5 (± 2KV) for the domestic U.S. version. The UPS power supply shall operate and comply with CE mark.