What's the red led on sapphire 4850 indicates?
When Leds are on(lit) they mean:
HD3870 LEDsR53 Green Led Off - shows critical temperature fault
MR53 Red Led On - shows External power connector was removed
HD4850 LEDsD1601 - Over temp protection enabled
D1602 - EXT 12V fault
HD4870 LEDsD1601 - Red LED On, shows critical temperature fault
D1602 - Red LED On, shows External power connector A was removed
D1603 - Red LED On, shows External power connector B was removed
D601 - Red LED On, shows critical Core power fault
HD4870X2 LEDsHave not manage to locate them.
At BOOT/POST, the card's fan will spin @ 100% for a short while and 3 of the 4 LEDs will light up for a brief period and then go out ( D601 should remain unlit ). This is NORMAL behaviour as the card is performing it's own type of POST test.
The Info above has been supplied by: Gr33nGecko
Source:
DIAGNOSTIC LEDs ON HD4850/70