17
126305 Rev B 05/22/15
LEDs:
Service
(continued...)
Figure 4.2
-
CPU Board LEDs
D25
D21
D19
D13
D11
D1
D7
D8
D15
D17
D23
•
D1 (Red) “Heart Beat”
-
Blinks at the rate of 1x per second when in normal run mode.
•
D7 (Red)
-
RS
-
485
-
RXD
•
D8 (Green)
-
RS
-
485
-
TXD
•
D11 (Red)
-
COM 1 (Magnetic Card Reader)
-
TXD
•
D13 (Green)
-
COM 1 (Magnetic Card Reader)
-
RXD
•
D15 (Red)
-
COM 3 (Printer)
-
TXD
•
D17 (Green) COM 3 (Printer)
-
RXD
•
D19 (Red)
-
COM 2 (Auxiliary)
-
TXD
•
D21 (Green)
-
COM 2 (Auxiliary)
-
RXD
•
D23 (Red) COM 0 (Not Used)
•
D25 (Green)
-
COM 0 (Not Used)
