Skyworth 26L121W Service mode, Power Board schematic – 715T2907

OEM 715T2907 SMPS board – Used with Skyworth, Bush LT26M1CA, Insignia NS-LCD26-09, Dynex DX-LCD26-09, Westinghouse, Coppell, Fuente, AOC L26BH83, AOC LT26510

Used ICs: FAN7529MX, FAN7602MBX, TNY277PN-TL, 2SK085LS, SI8005QL – 715T2907
Factory pattern adjustment
It takes approximately 2 hours for the machine to warm up before the white balance adjustment.
Before performing the white balance adjustment, set the color analyzer Ca210.
Channel 1 is used for North American models.
White balance adjustment Source and color temperature standards
The entire white balance adjustment process is as follows:
Press the Menu key, the main menu appears, and then press the number keys 1 > 9 > 9 > 9, there will be factory OSD menu, enter the factory mode.
1. Select "Source" from the factory OSD menu to select different Source color temperature adjustment (PC / AV / S-Video / component, etc.);
2. Select the Source; select the factory menu "Color Temp" option to adjust the color temperature of the corresponding Source option.

 SMPS and audio output schematic

RGB adjustment (White Balance Adjustment) 
Note:
1) Source adjustment WARM, COOL, NORMAL, where PC timing is 137 (1024 * 768 60hz), AV timing is 303 (NTSC YPbPr timing is 311 (576I), and HDMI timing is 350 (1080I).
2) Before all color temperature adjustment, please do Auto Color of PC (timing137, pat185) and YPbPr (timing311, pat185). Note: YPbPr need to take three lines, do the color level YPbPr 100IRE.
3) This model generally does not need to adjust the W / B, only need to do Auto Color action can be.