Service manual

L9CMonitor
L9C service manual Page22 of 48
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4.2 Power Module
The power module includes an Inverter and Power regulator. The electrical specification
described as following:
4.2.1 Power Characteristics.
Input Rated Input Voltage 90~240 Vac,50/60Hz
Operation Input Voltage Range 90~264 Vac,47~63Hz
Max Input AC Current < 1.2A
Efficiency 12Vdc load 3.5A
Brightness Voltage from 0.3~3Vdc
ON/OFF Voltage : High(3.3Vdc)/Low(0Vdc)
Brightness Voltage(Vadj) 0.3Vdc(Max) ~ 3Vdc(Min)
On/Off Voltage High(3.3Vdc)/Low(0Vdc)
Output Static Output Characteristics 12V/3.5A Output : 11.4Vdc ~ 12.6Vdc
4.2.2 Inverter output characteristics.
Rated Output Kick-off Voltage 1500 ~ 2000 Vrms
Rated output Voltage 720Vrms
Rated Output Frequency 40 ~ 60 Khz
Rated Output Current per tube 7mArms
4.2.4 Power module of connector definition ;
CN110 ; Pin 1 & 2 ----> Vdc Output ( 12V +/- 5%)
Pin 3 & 4 ---------> GND
Pin 5 ---------> Brightness Control Voltage
Pin 6 ---------> On /Off ( "High" set Lamp on )
CN1 ~ CN4 ; Pin 1 ---------> HV ( High Voltage for CCFL )
Pin 2 ---------> Return ( Low Voltage for CCFL )