NEC VERSA S, Service Manual, Page: 74 / 100

5-8 Troubleshooting and Repair
Beep Codes
When the system detects an error and cannot display an error message because of the hard-
ware fault, the system indicates the error by beeping.
One beep indicates that the computer has completed its power-on self-test. If intermittent
beeping occurs, power off the computer and try again. If the beeping persists, see Table
Section 5-4 for a description of the beep codes.
Table Section 5-4 Beep Codes
Beep Sequence Description
S-S-S-P-S-S-L-P DMA page register failure
S-S-S-P-S-L-S-P Refresh failure
S-S-S-P-S-L-L-P ROM checksum failure
S-S-S-P-L-S-S-P CMOS RAM failure
S-S-S-P-L-S-L-P DMA controller failure
S-S-S-P-L-L-L-P interrupt controller failure
S-S-S-P-L-L-L-P 80C51SL (8042) keyboard controller failure
S-S-L-P-S-S-S-P Video adapter failure
S-S-L-P-S-S-L-P RAM failure (no message is displayed)
Note: S = Short beep
P = Pause
L = Long beep
DISASSEMBLY AND REASSEMBLY
This subsection contains step-by-step disassembly procedures for the system. Reassembly is
the reverse of disassembly. Each procedure is supported by a simplified disassembly illus-
tration to facilitate removal.
Disassembly consists of removing the following components:
Table Section 5-5 Disassembly
Sequence Part See Page
1 Battery pack 5-9
2 Keyboard 5-10
3 Memory module 5-13
4 Hard disk 5-14