SpectraLink Corporation
Maintenance and Diagnostics
Link WTS – Link 3000 MCU
Part Number: 72-0059-04-E.doc
Page 24
5. Troubleshooting During Start-Up Phase
This section describes the sequence of the LEDs on all system cards when the system is
first powered on (Boot ROM and Download of software).
5.1 Boot ROM LEDs
When the system is powered on, the normal sequence is for the green LEDs to 'count' up
from 1 to 12 in binary. The following table outlines the sequence.
LEDs Code
Description
0
0
Entered boot code
1
1
Done RAM test (check boot code CRC, flash type, factory page CRC,
downloaded CRC in that order)
2
2
Sent recognition character at 115200 (if carrier detected)
1,2
3
Sent recognition character at 57600 (if carrier detected)
3
4
Sent recognition character at 38400 (if carrier detected; send recognition
character at 9600 if carrier detected)
1,3
5
Jumping to downloader code
2,3
6
Entered downloader code
1,2,3
7
Copied to RAM, entered C code (check flash type, sense board slot,
check board type, CRC functional code, start IPC, in that order)
4
8
Checking for a KEEPALIVE message
1,4
9
Sent version to supervisor **
2,4
10
Awaiting download (sending requests if no other download) **
1,2,4
11
Jumping to functional code (functional code then blinks all the LEDs)
** Note: Codes 9 and 10 both blink at 1-second intervals while awaiting a response