Acer A231H Service Guide - Page 8

Acer OTP(Over temperature protection) Fuse protection Table-1 Status Power On Power Saving Power Off H-sync on off on off -- 3.2 Backlight Power Supply Panel: LTM230HT02 Items Lamp Input Voltage Input current On/Off switch level Brightness PWM Duty (ACM Off) Brightness PWM Duty (ACM On) CCFL operating Voltage Acer -LCD-A231H V-sync on on off off -- Video active blanked blanked blanked -- Power ≤55W < 1W < 1W < 1W < 1W LED Blue Amber Amber Amber Off Specification 4 CCFL 23.8---28V 1.2A (Typ.), 1.4A (Max.) 3.6VÚV onÚ 2.0 V (on) -0.3v ≤ V off ≤ 0.8 V (off) 35%~100% 3%~100% 875Vrms (Typ.), CCFL Current 7.5mA (Typ.) 8.0mA (Max.) CCFL startup voltage Ú1840 Vrms (0˚C) CCFL startup voltage Ú1510 Vrms (25˚C) Operating frequency 40~60 KHz Protect delay time > 1 second Efficiency ≥75% Note: Other panels please refer to the reference panel specs.