SHARP LC20B2U
Manual de Servicio

LC-20B2U

TROUBLE SHOOTING TABLE
No Power (Power LED indicator still in red)

Go to the adjustment process mode.

1 +B-ADJ 160 MODEL B2U INCH SIZE 20 SYSTEM N358 NTSC PWM FREQ OCO PAL PWM FREQ OBD NTSC PWM DUTY 0 PAL PWM DUTY 0 TV GAIN OFF ERROR NO RESET 0 V-CHIP 1 CANADIAN VCHIP OFF B2U VER 1.xx

Move the cursor to ERROR NO RESET and click on it (to reset to zero).

Turn off the power.

Is the power turned on again?

No
Check the back light lamp, D3600-3, Q3600-2 and their peripheral parts as well as pin (42) of IC2001.

Note: This model is equipped with the lamp error detection function that detects the current flowing into the fluorescent lamp and protects the backlight lamp drive circuit. If a lamp error is detected, the microprocessor interrupts the unit and the ERROR NO RESET setting will go up. When the ERROR NO RESET setting has reached "5", the microprocessor turns and keeps off the unit's power. To resume the power, take the above procedure to clear the ERROR NO RESET setting.

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