IBM 6646 Personal Computer User Manual


 
Parts/Test Point Locations 105
System Board Jumpers and
Connectors
NOTE:
The whitened pin of a jumper represents
pin 1.
System Board Jumper Settings
Jumper/Settings Function
JP11, JP4 - Reserved
1-3, 2-4
3-5, 4-6
AMP Select:--Reserved
JP7 Boot Block CMOS
Clear
1-2
2-3
Clear function
*Default
Clear CMOS/Boot Block
Recovery