NEC Express5800 Series EXP320B - Manual (Page 57)

General Description 2-13
(20) Fan 2 error LED
See page 2-25.
(21) Fan 1 error LED
See page 2-25.
(22) Memory group 2 error LED
See page 2-25.
(23) Voltage error LED
See page 2-26.
(24) Memory group 1 error LED
See page 2-25.
(25) HCS2 error LED
See page 2-26.
(26) Power supply unit error LED
See page 2-26.
(27) HCS1 error LED
See page 2-26.
(28) Heat warning LED
See page 2-26.