710CDT/720CDT
1-17
1.9
Power Supply
The Power Supply sends four variations of voltages to the system board, has one microproces-
sor, and operates at 2 MHz. It offers the following features:
1.
Determines if the AC adapter or battery is connected to the computer.
2.
Detects DC output and circuit malfunctions.
3.
Controls the Battery Capacity icon and DC In icon.
4.
Turns the battery charging system on and off, and detects a fully charged battery.
5.
Determines if the power can be turned on and off.
6.
Provides more accurate detection of a low battery.
7.
Calculates remaining battery capacity.
8.
Detects Ring Indicator (RI) signal for the Auto Power On function.
The power supply output ratings are specified in Table 1-8.
Table 1-8 Power supply board output ratings
DC
Regulation
Maximum
Use
Name
voltage
tolerance
current
Ripple
(V)
(%)
(mA)
(mV)
System logic, FDD, HDD
B5V
+5.0
±5
3,400
100
Display panel, FL and
PC card
CPU, RAM, PC card
B3V
+3.3
±5
3,800
60
Flash ROM, PC card
B12V
+12.0
±5
100
240
System logic
MCV
+5.0
±5
5
100
Содержание Tecra 710CDT
Страница 186: ...710CDT 720CDT B 1 Appendix B Board Layouts B 1 System Board Front View Figure B 1 System board layout front ...
Страница 187: ...B 2 710CDT 720CDT B 2 System Board Back View Figure B 2 System board layout back ...
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Страница 215: ...E 2 710CDT 720CDT E 3 German GR Keyboard Figure E 3 GR keyboard E 4 French FR Keyboard Figure E 4 FR keyboard ...
Страница 216: ...710CDT 720CDT E 3 E 5 Spanish SP Keyboard Figure E 5 SP keyboard E 6 Italian IT Keyboard Figure E 6 IT keyboard ...
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Страница 222: ...710CDT 720CDT G 3 ...