AKIRA LCT-27PBSTP _ SERVICE MODE _ ADJSUTMENTS

TO ENTER SERVICE MODE

• Press { MENU → -/--→9→1→8 } one by one, then enter factory menu, press the SLEEP button to select adjustment page. 
• To exit factory menu to press the MENU button.

EPROM INITIALIZATION

Input PAL signal of 16-level gray-scale (TIMING969 PATTAN921) from VG848 to AV channel, enter user menu, set color to 0, APL to “off”, enter factory menu white balance adjustment page, select color temperature, fixed the GGAIN to 50H, adjust BGIAN and RGAIN to 400nits, then the color coordinate to 284, 299. Fixed the BOFFSET to 50H, adjust GOFFSET and ROFFSET to 5nits, then the color coordinate to 284, 299. Select cool tint, adjust color coordinate to 270, 283. Select warm tint, adjust color coordinate to 313, 329.

PERFORMANCE AND INSPECTIONS

TV FUNCTION

1. Enter the search menu → auto search, connect RF-TV terminal to the central signal source, check if there is station skipping.
2. AV/S input terminal : Input AV/S signal, check the picture and sound is normal.

SCART TERMINAL

(Note: check the SCART terminal, set display mode to AUTO).  Check SCART INPUT special function.  SCART1 terminal function. 

•  After turn on the unit, connect the SCART1 to PM54200 signal generator, then the unit auto select to SCART1 mode.
• SCART signal generator sends CVBS signal to the unit, check if the image and sound is normal. It sends image format (16:9 and 4:3) to the unit, check if the unit auto identify is normal. Change SCART signal to RGB signal, check if the image and sound is normal, It sends image format (16:9 and 4:3) to the unit, check the unit auto identify is normal. Select the PIP mode, connect earphone cable, and check if the sound is normal.
• After turn on the unit, connect the SCART2 to PM54200 signal generator, then the unit auto select to SCART2 AV mode.  SCART signal generator sends CVBS signal to the unit, check if the image and sound is normal. It sends image format (16:9 and 4:3) to the unit, check if the unit auto identify is normal, and display the SCART2 AV. Change SCART signal to Y/C signal, select the SCART2 Y/C channel mode, check if the image and sound is normal, It sends image format (16:9 and 4:3) to the unit, check if the unit auto identify is normal. Select the PIP mode, connect earphone cable, and check if the sound is normal.

SCART OUTPUT FUNCTION [SPECIAL FUNCTION]

1. SCART1 terminal function :  Input signal in the TV states, connect the SCART1 terminal to the TV. Change the TV program, check if output signal of SCART1 is TV signal, and the mage and sound is normal, change the unit channel, the CART1 output TV signal, it can not other signal.
2. SCART2 terminal function:  Input signal in the TV/AV/S states, connect the SCART2 terminal to the TV. Change the unit channel, check if output signal of SCART2 is current signal, and the image and sound is normal.

YPbPr/YPbPr terminal Input the YUV signal (VG-848 signal generator), separate input YUV format signal of table 1, check if the image and sound is normal. If the image is deflection of the H-field, select auto sync correction of the SCREEN menu. If the image is slight disturb, adjust the FINE TUNE correction of the SCREEN menu. Open the PIP mode, connect the

earphone, and check if the image and sound is normal.

HDMI terminal HDMI signal format receive the three high definition signal: 480P, 576P,720P/50/60 Hz, 1080I/50/60 Hz, except for the table 2 signal. Check if the image (contain HDCP ON and OFF) and sound is normal. If the image is deflection of the H-field, select auto sync correction of the SCREEN menu. Open the PIP mode, connect the earphone, and check if the image and sound is normal.