ViewSonic VS11661 Service Manual page 33

d) OSD:
The NT68625F has a fully programmable, high-quality OSD controller. The on-chip static RAM (256
different fonts at size of 12X18) stores the cell map and the cell definitions.
e) Panel Power Sequencing (LCD-ON, BL-ON) (Pin 108&Pin29)
The NT68625F has two dedicated outputs LCD-ON and BL-ON (Pin108 and Pin29) to control LCD power
sequencing once data and control signals are stable.
f) Inverter Brightness control (PWMB) (Pin 118)
The NT68625F has one PWM output PWMB (Pin118) to control Inverter Brightness Range.
g) Panel LVDS interface (Pin68~77, Pin80~88)
The NT68625F driver interface is highly programmable. It supports LVDS port for panel.
4.2 Power Module
The power module includes an Inverter and Power regulator. The electrical specification described as
followings:
4.2.1 Power characteristics.
Input
Output
4.2.2 Inverter output characteristics.
Rated Output Kick-off Voltage
Rated output Voltage
Rated Output Frequency
Rated Output Current per tube
4.2.3 Power module of connector definition;
CN101;
CN401 ~ CN402;
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Rated Input Voltage
Operation Input Voltage Range
Max Input AC Current
Efficiency
Brightness Voltage (Vadj)
On/Off Voltage
Static Output Characteristics
Pin 1 & 2 ----> GND
Pin 3 & 4 -------> Vdc Output (5.2V +/- 5%)
Pin 5 ---------> Brightness Control Voltage
Pin 6 ---------> On /Off ("High" set Lamp on)
Pin 1 ---------> HV (High Voltage for CCFL)
Pin 2 ---------> Return (Low Voltage for CCF)
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100~240 Vac, 50/60Hz
90~264 Vac, 47~63Hz
< 2A
5Vdc load 3A
Brightness Voltage from 0.3~3.3Vdc
ON/OFF Voltage: High (3.0Vdc)/Low (0Vdc)
0.3Vdc(Max) ~ 3.0Vdc(Min)
High (3.0Vdc)/Low (0Vdc)
5V/0~3A Output: 4.94Vdc ~ 5.46Vdc
1800~2300 Vrms
625Vrms
40 ~ 60 Khz
6~8.5mArms
30
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