User Guide

Chapter 5 Troubleshooting Guidelines
340S8 Rev : A Page
6
+3V_TX_TR : LAN 3.3V analog power source
LCDVCC : LCD display 3.3V power source
VIN : Inverter 8~20V power source
ADAP+ : 20V Power supply from AC adapter
AMPVDD : 5V analog power for audio
1.2.4 Power Source Status
5V 3.3V 12V CPU
_core
VCC_
CMOS
2.5V 1.5V 1.8V
FULL-ON ON ON ON ON ON ON ON ON
SLEEP ON ON ON ON ON ON ON ON
STD OFF OFF OFF OFF OFF OFF OFF OFF
SOFT-OFF OFF OFF OFF OFF OFF OFF OFF OFF
1.2.5 DC/DC Board
The DC/DC (system power) can support +3.3V, +5V, +12V for the main system.
The DC/DC (CPU power) can support +1.3V~2.05V, +1.8V, +2.5V for the CPU.
1.2.6 AC-DC Adapter
Input Voltage : 100 ~ 240 ±10% AC
Input Frequency : 50 ~ 60 Hz ±3Hz
Input AC current : 1.5A max @ 90 VAC
Efficiency : Better than 80%
Inrush Current : 50A @ 115VAC, 100A @ 230VAC
Holdup Time : 5mS (minimum)
Output Voltage/Current : 20V / 3.0A
Output Load Regulation : ±5%
1.2.7 Inverter
Input Voltage : 8-22 VDC
Output Voltage : 620 Vrms @ 45~55KHz
Start Up Voltage : 1200 Vrms (min.)
Brightness Adjust Range (tube current) : 3mA rms – 5.5mA rms
Protection : Open circuit protect, current limit protect
1.2.8 Battery Pack
A. Lithium – Ion Battery packs
• Battery type : Li-Ion
• Battery cells : 8 cells
• Battery Spec : 3.7V / 1800mAH