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Table 1. Numeric error codes (continued)
Symptom or error FRU or action, in sequence
850D
PCI IRQ routing table error
Update the BIOS.
850E
Timer Error
System board.
850F
Refresh timer test failed
System board.
8510
Interrupt Controller-1 error
System board.
8511
Interrupt Controller-2 error
System board.
8600
CMOS Date/Time Not Set
Run BIOS Setup Utility and save it. If the
same error happens after doing it, replace
the system board.
8601
CMOS Battery Low
1. Backup battery.
2. System board.
8602
CMOS Settings Wrong
Run BIOS Setup Utility and save it. If the
same error happens after doing it, check
these FRUs:
1. Backup battery.
2. System board.
8603
CMOS Checksum Bad
Run BIOS Setup Utility and save it. If the
same error happens after doing it, check
these FRUs:
1. Backup battery.
2. System board.
8700
KBC
BAT Test failed
Run interactive tests of the keyboard and
the auxiliary input device.
8701
Keyboard Error
Confirm that the keyboard cable is
connected correctly.
8702
PS2 Keyboard not found
If setting is incorrect, reset the BIOS Setup
Utility. If setting is correct, after confirming
the PS2 keyboard is correct, replace the
system board.
8703
PS2 Mouse not found
If setting is incorrect, reset the BIOS Setup
Utility. If setting is correct, after confirming
the PS2 mouse is correct, replace the
system board.
8704
Keyboard/Interface
Error
System board.
8705
Unlock keyboard
1. System board.
2. Keyboard.
8706
System Halted
System board.
8707
<INS> Pressed
If the error continues, check these FRUs:
1. Backup battery.
2. System board.
8708
Password
check failed
If the error continues, check these FRUs:
1. Backup battery.
2. System board.
42 ThinkPad SL400, SL400c, SL500, and SL500c Hardware Maintenance Manual