Philips FMxx SCAVIO replacement v2 free download

File name FMxx_SCAVIO_replacement_v2.pdf

1. FM23, FM24, FM242, FM33: SCAVIO replacement This Service Information describes the way of working when a SCAVIO panel must be replaced. 1.1. Step 1: General Replace the SCAVIO panel as desxribed in chapter 4 of the concerned Service Manual. 1.2. Step 2: ADC Alignment 1. Supply, via a PC in VGA-mode (640x480), the `ADC alignment' test pattern (bmp-file is attached to the Service Information). This is a half black and half white picture: black has the value 17, and white 235 on a full scale of 255 (= 700 mV). Note: use e.g. the program MS Paint, and display the picture in 'full screen' mode (CTRL-F). 2. Now activate the Service Alignment Mode (see SM chapter 5.2.2). 3. Select ALIGN ADC in the SCALER menu, and press CURSOR RIGHT (on the remote control). 4. The alignment is performed automatically. 1.3. Step 3: White Point Alignment For the'White Point' alignment, two methods are possible: with or without colour analyser. Both are described. Method 1 (with colour analyser) 1. Supply, via a Personal Computer in VGA-mode (640x480), the `White Drive' test pattern (bmp-file is attached to this Service Information). This is a black picture with in the middle a 100% white square. Note: use e.g. the program MS Paint, and display the picture in 'full screen' mode (CTRL-F). 2. Set BRIGHTNESS to `53' and CONTRAST to `65' (via the standard customer menu). 3. Now activate the Service Alignment Mode (see SM chapter 5.2.2) and go to the SCALER menu. 4. Set COLOUR TEMPERATURE to `8700 K' (= Normal). 5. Measure with a CTV colour analyser (calibrated with the spectra) on the centre of the white square on the screen. 6. Select WHITE POINT in the SCALER menu, and press CURSOR RIGHT (on the remote control). 7. Adjust with the CURSOR UP/DOWN or LEFT/RIGHT command, the three white points Red, Green, and Blue to `128' (caution: do not go above this value!). 8. Now align, with one or two of these drivers, to the correct coordinates (see table below). 9. Repeat the same measurement for respectively colour temperature `6500 K' and `10000 K'. 10. Repeat steps if necessary. Colour temp. x y 6500 K (Warm) 313 329 8700 K (Normal) 299 309 10000 K (Cool) 280 289 Method 2 (without colour analyser) Without a CTV colour analyser, it is still possible to set some parameters. These values are based on average values from production (this method is, of course, less accurate than method 1). 1. Set BRIGHTNESS to `53' and CONTRAST to `65' (via the standard customer menu). 2. Now activate the Service Alignment Mode (see SM chapter 5.2.2) and go to the SCALER menu. 3. Set COLOUR TEMPERATURE to `8700 K' (= Normal). 4. Sele