IBM 1412 - Manual (Page 78)

13. Audio volume control
14. Battery pack
Switch Locations
There are two switches found on the system board. Refer
to the tables below on how to set these switches.
Note: There is no switch to set the CPU voltage and
speed. The CPU board can sense the correct
working voltage and speed itself.
Keyboard Language (SW3, Switch 1, 2 and
3) Setting
Password (SW3, Switch 4) Setting
Non-configurable Switches
Keyboard
Language Japanese U.S.
English European
Switch 1 On Off Off
Switch 2 Off Off On
Switch 3 Off On Off
Password Bypass Check
Switch 4 On Off
Reserved Default Settings
Switch 1 Off
Switch 2 On
74 ThinkPad i Series 1400