Equipment description
P1509 21 x 125 Line Matrix
22
Front Access Full Matrix LED Sign Maintenance Manual (pn 1507610501 rev. A)
L
P4
RS232 PORT
Not used.
M
BAT1
BATTERY BACKUP
3V lithium battery (Panasonic CR2032 or equivalent).
N
LED1 TO LED4
DIAGNOSTIC LEDS
• LED1: Controller #1 and #2 = Heartbeat.
• LED2: Controller #1 = Communications from P3 (laptop computer); Controller #2 =
Communications from Controller #1.
• LED3:
• LED4: Controller #1 = Communications to and from LED display boards; Controller
#2 = Communications to and from light sensors.
O
J5
PROGRAMMING
PORT
P
S2 RESET
CONTROLLER RESET
SWITCH
Used to reset the controller for a soft start.
Q
P3
RS232 PORT
RS232 COMM PORT 2 — used to interface laptop computer to Controller #1.
R
P2
RS232 PORT
RS232 COMM PORT 1 — not used because J6 is used for controlling driver boards
and light sensors.