Cmos Jumper And Pin Location By Model - IBM 4800-741 Hardware Service Manual

Updated July 14, 2008
Figure 67. Location of CMOS jumper—Model 741 and 781
Figure 68. Location of CMOS jumper—Model 721
3. See A in Figure 67 or B in Figure 68 to locate your CMOS jumper on the
4. Move the pins to position 2-3 and wait for 5 seconds.
5. Return the pins to position 1-2.
6. Re-plug the AC cord and power-on the system. Your system now has the
Note: Restoring the CMOS default settings may be necessary if a password is lost
planar. See Table 7 for the correct pins and position to clear your CMOS
settings.
Table 7. CMOS jumper and pin location by model
Model CMOS Jumper
721 JP5
741, 781 JP4
default CMOS settings.
or forgotten.
Pins for normal operation Pins to clear CMOS
1-2
Chapter 4. Diagnostics and configuration settings
2-3
81