Lenovo LXM-L19BH, Service Manual

Page: 9 / 44

Lenovo LXM-L19BH
Page 9 of 44
4.2 FACTORY PRESET DISPLAY MODES
：
Standard
Resolution
Horizontal
Frequency
Vertical Frequency
Dos-Mode
640 × 400 31.47kHz 70Hz
Dos-Mode
720 × 400 31.47kHz 70Hz
640 × 480 31.47kHz 60Hz
640 × 480 37.861kHz 72Hz
VGA
640 × 480 37.50kHz 75Hz
800 × 600 35.156kHz 56Hz
800 × 600 37.879kHz 60Hz
800 × 600 48.077kHz 72Hz
SVGA
800 × 600 46.875kHz 75Hz
1024 × 768 48.363kHz 60Hz
1024 × 768 56.476 kHz 70 Hz
1024 × 768 56.476kHz 70Hz
XGA
1024 × 768 60.02kHz 75Hz
1280 × 1024 64.000kHz 60Hz
SXGA
1280 × 1024 80.000kHz 75Hz
4.3 Power Supply (ROOM TEMPERATURE 25
℃±
4
℃
)
4.3.1 INVERTER MAX BRINGTHNESS (Vadj:5.0V), LOAD=120K
Ω
X4
ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK
Input voltage
Vin
10.8 12 13.2 V
Input current Iin 2200 2450 mA FOR 4 LOAD
Output Current Iout 6.0 6.5 7.0 mA FOR 1 LOAD
Frequency F 52.0 57.0 62.0 KHZ FOR 1 LOAD
H.V open
Vopen
1500 1650 1800 Vrms NO LOAD
H.V Load Vload 710 810 910 Vrms RL=120K
Ω
Start voltage Vst 1700 1850 2000 Vrms RL=CCFL
Protect delay time PDT 0.1 1 4 Sec
4.3.2 INVERTER MIN BRINGTHNESS (Vadj: 0.0V), LOAD=120K Ω X4
ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK
input voltage Vin 10.8 12 13.2 V
input current Iin 740 820 mA FOR 4 LOAD
Output Current Iout 3.0 3.5 4.0 mA FOR 1 LOAD
Frequency F 52.0 57.0 62.0 KHZ FOR 1 LOAD
H.V open Vopen 1500 1650 1800 Vrms NO LOAD
Start voltage Vst 1700 1850 2000 Vrms RL=CCFL
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