Lenovo ThinkPad 770X Technical Reference Manual for the ThinkPad 770 - Page 20
Power Supply, Voltages, VCC3M, VCC12, and VCCSW.
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Power Supply The power supply converts the ac voltage to dc voltage and provides power for the following: System board set Diskette drive Hard disk drive CD-ROM drive Auxiliary devices Keyboard LCD panel PCMCIA cards DVD drive Voltages The power supply generates six different dc voltages: VCC5M, VCC3M, VCC12, and VCCSW. Figure 1-8 shows the maximum current for each voltage. Output VCC5M VCC3M VCC12 VCCSW Voltage (V dc) +5.0 +3.3 +12.0 +5.0 Current (A) 5.80 6.00 0.50 0.01 Figure 1-8. Power Supply Maximum Current 1-10 System Overview
Power Supply
The power supply converts the ac voltage to dc voltage and provides
power for the following:
±
System board set
±
Diskette drive
±
Hard disk drive
±
CD-ROM drive
±
Auxiliary devices
±
Keyboard
±
LCD panel
±
PCMCIA cards
±
DVD drive
Voltages
The power supply generates six different dc voltages:
VCC5M,
VCC3M, VCC12, and VCCSW.
Figure
1-8 shows the maximum
current for each voltage.
Figure
1-8.
Power Supply Maximum Current
Output
Voltage (V dc)
Current (A)
VCC5M
+
5.0
5.80
VCC3M
+
3.3
6.00
VCC12
+
12.0
0.50
VCCSW
+
5.0
0.01
1-10
System Overview