Lenovo 3779 Computer Hardware User Manual


 
System-board LEDs
The following illustration shows the light-emitting diodes (LEDs) on the system
board.
Note: Error LEDs remain lit only while the server is connected to power.
Table 7. Callout descriptions
1 PCI riser 2 LED 13 Fan 3 error LED
2 Enclosure manager heartbeat LED 14 Power channel A LED
3 Battery error LED 15 Power channel B LED
4 IMM heartbeat LED 16 Power channel C error LED
5 PCI riser 1 LED 17 Power channel D error LED
6 Microprocessor 1 error LED 18 Power channel E error LED
7 DIMMs1-8error LEDs 19 Power channel F error LED
8 Reserved 20 240 - V AUX channel error LED
9 Fan 1 error LED 21 SAS riser missing LED
10 Reserved 22 System-board error LED
11 Fan 2 error LED 23 Microprocessor 2 error LED
12 Reserved 24 DIMMs 9-16 error LEDs
154 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Hardware Maintenance Manual