User's Manual

Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD ATSC Initial On Site
Transmitter/Regenerative Translator Turn On Procedure
Instruction Manual, Rev. 2 85
Typical Problems, Indications and Causes in CU0TD/RD-2 or -3 Drawer
Problem Indication Cause
No power to
drawer
Operate/Standby and Enable LED
indicators and LCD display are Off
AC power cord not
connected. Main AC to
System missing. On/Off
switch on back of drawer
Off. 10 Amp fuse (F1)
blown*. Power supply (A9)
not operating
No Output
Signal
Front Panel Status LED is Amber
and blinking with no events, faults
indicated.
On the 8VSB Modulator
S310 MPEG Input Selection
Set Up Screen, the Input is
currently set incorrectly to
“from Internal Source”. Set
to “from External Source”.
Loss of Input
Signal
Loss of Input on Modulator Menu Loss of input signal.
Loss of
Output
Signal
Amber Operate/Standby LED.
Blinking Red Status LED.
Any Event, Fault, which
Mutes the output.
Including Input Fault,
VSWR Cutback, Overdrive,
Over-temperature and
Overvoltage.
Loss of 24V,
28V, 32V,
42V or 48V
Power Supply Fault on Power
Supply Menu
Power supply (A10) not
operating
Loss of ±12V
or 5V
Operate/Standby and Enable LED
indicators and LCD display are Off
Power supply (A9) not
operating
Table 33: Typical Problems
NOTE: *A spare 10 Amp fuse is provided in the blank fuse holder under the active fuse.
If there is an Event (Fault) occurring in the system, the Status LED on the front panel will
flash RED as long as the Event (Fault) is present. In addition, the menu will jump to the
current Event (Fault) on the display and blink the Event (Fault) continuously, if the Jump to
Fault screen is set to Yes. When the Event (Fault) is corrected, the drawer will turn the
Status LED to AMBER to indicate that there was a Fault and the menu will still display the
Fault but it will not flash. This gives the user the knowledge that there was an Event (Fault)
and what type of Event (Fault) occurred. Before clearing the fault, check if there were other
Events (Faults) by stepping through the menus. To reset the indication of previous Events
(Faults) the user must push the Enter button with the Event (Fault) Reset Screen displayed.
This will reset all previous Events (Faults).