Comcast LT1550-E, Instruction Manual

Page: 46 / 48

LT1550-E
www.comcast-sa.com
6.2 Troubleshooting
Should a problem occur, see if the symptoms are listed in Table 6-1.
Table 6-1: Troubleshooting Solutions
Indicator status
Alarm menu
content
Fault phenomenon Solution
Power indicator
is yellow Power Invalid LEFT
(RIGHT)
The left (right)
power is break
down or the power
cord is not plugged
in
Plug in the left (right)
power cord. If that does
not correct the problem,
contact
Customer
Service. Replace the
power supply.
Power indicator
is flash yellow
-5V Status HIGH
(LOW)
+5V Status HIGH
(LOW)
+12V Status HIGH
(LOW)
-12V Status HIGH
(LOW)
+24V Status HIGH
(LOW)
Power alarm menu
shows one of the
contents
The laser is off
Contact Customer
Service.
RF indicator is
flash red RF IN Status LOW
(HIGH) RF input is low
(high)
Verify the optical
transmitter is operating
within the proper input
level threshold range (78-
96dBµV).