akira CT-21TF9 Service Manual

Version 1.0 13 Appendix: If customer logo is needed, please set LOGO ON 1 and CUS.LOGO (or CUSTOM LOGO) 1 at the SERVICE MODE. Change the data of E2prom to get the custom logo with special implement ( I2C converter Board and Computer). Please see the details as following. Method to Write Data for Custom Logo The are total 12 characters that can be input into E2prom and display on the TV. The address range of E2prom (24C04) is from 170H-17BH. The following table shows the code input character. Character Data C ...

Version 1.0 7 (A) MAIN CHASSIS ALIGNMENT 1. IF ALIGNMENT FOR MAIN CHASSIS 1.1. PIF Adjustment (38.9MHz) 1.2. Tuner AGC connects to GND. Pattern Generator outputs 38.9MHz R.F. signal and connects to tuner output terminal or pin5 of saw filter. 1.3. Connect Digital voltmeter across C227. DC Regulated power supply positive terminal output +20V to pin1of IC203 and negative terminal of D608. DC Regulated power supply negative terminal connects to pin2 of IC203. 1.4. Adjust L203 coil to obtain 3.6V Digital voltag ...

Version 1.0 10 4.6. Go to factory mode “MENU2” according to 4-4-2. Obtain Low Bright area to x=281and y=311 by adjusting R.bias and B.bias. Obtain High Bright area to x=281and y=311 by adjusting R.drive and B.drive. Obtain both area to x=281 and y=311 by adjusting the two status repeatedly. 5. SUB-BRIGHT ADJUSTMENT Receive GREY SCALE signal. (PHILIPS PM54200, 11 STEP) 5.1. Set TV at normal mode. 5.2. Get into factory mode, adjust sub-bright option to make the picture same as below. 4. Totally dark ...

Version 1.0 2 M M Mooodddeeelll G GGrrrooouuuppp::: CCCTTT---222111TTTFFF999 CHASSIS: 3Y01 MODEL: CT-21TF9A CT-21TF9C CT-21TF9CP CT-21TF9CP(IKD) CT-21TF9CP(SKD) CT-21TF9CP(M) CT-21TF9N CT-21TF9R ...

Version 1.0 2 M M Mooodddeeelll G GGrrrooouuuppp::: CCCTTT---222111TTTFFF999 CHASSIS: 3Y01 MODEL: CT-21TF9A CT-21TF9C CT-21TF9CP CT-21TF9CP(IKD) CT-21TF9CP(SKD) CT-21TF9CP(M) CT-21TF9N CT-21TF9R ...

Version 1.0 8 2. SYSTEM NTSC ADJUST (L108). 2.1. Tuner AGC connects to GND. Connect Sweep Signal Generator to tuner IF output terminal oscilloscope V-IN terminal connects to C109. And connect Q102 'base' pole to the power terminal(+9V) of R104 through a 10K resis- tor.(shown in FIG.2) 2.2. Apply +20V DC across IC302 as shown in FIG.2. 2.3. Adjust L108 to obtain waveform as following. FIG.2 Note: There will be no alignment required for TV without off-air NTSC system feature. 33.4MHz ...

Version 1.0 13 Appendix: If customer logo is needed, please set LOGO ON 1 and CUS.LOGO (or CUSTOM LOGO) 1 at the SERVICE MODE. Change the data of E2prom to get the custom logo with special implement ( I2C converter Board and Computer). Please see the details as following. Method to Write Data for Custom Logo The are total 12 characters that can be input into E2prom and display on the TV. The address range of E2prom (24C04) is from 170H-17BH. The following table shows the code input character. Character Data C ...