AKIRA - 14KLS4/CE SERVICE MODE LA-67931

TO ENTER SERVICE MODE

1. Press "Menu" button on the remote control.
2. Press "Recall" button three times sequentially to enter Factory Menu.
3. Press [P+/P-] buttons on the remote control to select an item to adjust.
4. Press [V+/V-] buttons on the remote control to adjust the data value to selected item.
5. Press "Recall" button again to 'Exit' the Factory Menu.

DEFAULT DATA VALUES

Factory Menu - 00

1. H-PHASE = 11
2. OSD-H-POSITION = 25
3. V-SIZE = 82
4. V-POSITION = 1
5. V-LENEARITY = 22
6. V-SC = 4
7. V-KILL = 0
8. SUB-BRIGHT = 50
9. RF -AGC AUTO = 25

Factory Menu - 01

• H-BLK-L = 1
• H-BLK-R = 1
• TUNER 0:QJ   1  1:ALPS = 0
• VOLUME LENEAR MEASURE = 0
• B-Y DC LEVEL = 10
• R-Y DC LEVEL = 11
• B-Y DC LEVEL YUV = 9
• R-Y DC LEVEL YUV = 8

Factory menu - 02

1. RED-BIAS = 117
2. GREEN-BIAS = 134
3. BLUE-BIAS = 153
4. RED-DRIVE = 99
5. GREEN-DRIVE = 15
6. BLUE-DRIVE = 92

OPTION MENU - 00

1. BACK COVER OPTION = 0
2. Q-ASM OPTION = 0
3. OPT-AV-SYSTEM = 1
4. Y-IN   0:P48    1:P54 = 1
5. OPT-YUV = 0
6. LANGUAGE SW CE = 1
7. ENG 0  : CH 1 = 0

OPTION MENU 01

• LV 1116O  OPT = 1
• AUDIO SW = 1
• SIF 6.5M = 1
• SIF 6.0M = 1
• SIF 5.5M = 1
• SIF 4.5M = 1

POWER SUPPLY VOLTAGE ADJUSTMENT

• Check AC voltage is normal or not at AC 220V 50Hz.
• Receive a broadcast signal and adjust the brightness and contrast until the standard picture is obtained.
• Adjust (RP950) until voltage between cathode of (VD950) and GND of the chassis is 110V+/-0.5V.

SERVICE FLOW CHART

• POWER SUPPLY:  Check input voltage > check voltage of C910 anode > check pin 3 of N901 > check V901 > check input voltage of T901 secondary coil > check voltage of N904, N905 pin-3(5v) and N903 pin-3(9v) > check voltage of N103 pin 8,31,32,35,36,43,55 (5V) and pin-11,19 (8V) > check voltage of N602 pin 8 (5V).
• AUDIO CIRCUIT:  Check power supply of audio power amplifier circuit > check input audio signal of audio power amplifier > check waveform of N103 pin-5 > check waveform of xs808 pins 16,17 > check waveform of N201 pins 8,9.
• HORIZONTAL CIRCUIT:  Check voltage of T402 pin-3 (110V) > check voltage of N103 pin-19 (+9V) > check waveform of V401 base > check waveform of V402 collector > check output voltage of T402 coil > check waveform of T402 Pin-8.
• VERTICAL CIRCUIT:  Check voltage of N440 Pin2(+25V) & Pin7(+9V) . check voltage of N103 pin 19 (9V) > check waveform of N103 Pin-17 > check waveform of N440 pin-1 > check waveform of N440 Pin-5.
• MCU CIRCUIT: Check voltage of N103 Pin 31,32(5V) > check waveform of N103 pin-33