Akai LCT42Z7TAP, Service Manual

Page: 83 / 130

Product Specification
LC420WU1
Liquid Crystal Display
Table 3. ELECTRICAL CHARACTERISTICS (Continue)
Turn On
Operating A 7.4 7.0 - I
BL
Power Input Current
Vp-p 0.4 -
Power Supply Input Voltage Ripple
Lamp :
Life Time
Inverter :
3 Hrs 60,000 50,000
W 185 175 - P
BL
Power Consumption
2 V
DC
3.3 - 0.0 V
BR
Brightness Adjust
Input Voltage for
Control System
Signals
1
V
DC
25.2 24.0 22.8 V
BL
Power Input Voltage
A 8.8 8.3 - I
BL
On/Off
Off
On V
DC
5.25 - 2.5 V on
V
DC
0.8 - 0.0 V off
Parameter Symbol
Max Typ Min
Note Unit
Value
Note :
1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 120
minutes at 25
±
2
°
C
The specified current and power consumption are under the typical supply Input voltage, it is total power
consumption.
The ripple voltage of the power supply input voltage is under 0.4 Vp-p.
LPL recommend Input Voltage is 24.0V
±
5%.
2.
Brightness Control.
This V
BR
Voltage control brightness.
3. The life is determined as the time at which luminance of the lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25
±
2
°
C.
Specified value is when lamp is aligned horizontally.
Minimum Brightness.(Burst On Duty 25%) 0V
Maximum Brightness (100%) 3.3V
Function
V
BR
Voltage
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