Backlight Power Supply - Acer LCD-S243HL Service Manual

Acer
DC Output Voltage
DC output loading capability
Rise Time
Dynamic load change
Overshoot
Efficiency
Tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic Capacitors and measured
Note 2:
band-width with DC-20MHz.
Table-1
Status
Power On
Power Saving
Power Off

3.2 Backlight Power Supply

Panel
Input Voltage
Input current
On/Off switch level
Brightness PWM Duty (ACM Off)
Brightness PWM Duty (ACM On)
LED operating Voltage
LED Current
Efficiency
+5V output
Audio 5V output
+5V output
Audio 5V output
H-sync V-sync
on on
off on
on off
off off
-- --
Items
<200mv
<500mv
Vcc5V:4.85V~5.35V
audio 5v:4.8V~5.3V
Vcc5V/1.0A
Audio 5V/1.0A
<50mS
<10%
≥80%
Video Power
active ≤ 32W
blanked < 1W
blanked < 1W
blanked < 1W
-- < 1W
Specification
M240HW01 V6 2*8Bar LED
18---20V
1.2A (Typ.), 1.5A (Max.)
3.6V V ≧ on 2.0 V (on)
≧
-0.3v ≤ V off ≤ 0.8 V (off)
30%~100%
0%~100%
38Vrms(min);40.6Vrms (Type); 44.2Vrms (max)
20mA (Typ.)
25mA (Max.)
≥80%
Acer –LCD-S243HL
See note 2
With system
LED
Blue
Amber
Amber
Amber
Off