Cisco Model D-PCG1000 PowerKEY CAS Gateway Installation Guide
Chapter 5 Troubleshooting the GQAM
100
4014102 Rev C
LCD
Description
Description
Alarm
Level
Level
Probable Cause
Check and Correct
RF (1-4) DC
Lock detect
error
Lock detect
error
See also RF (1-
4) UC Lock
detect error
4) UC Lock
detect error
Major
Downconverter (DC) lock
detect signal not functioning
correctly. During Modulator
MCU Power On Self Test
(POST), the lock detect signal
from the downconverter phase-
locked loop (PLL) did not
indicate an unlocked condition
when one existed
Note: Since the MCU cannot
correctly detect locked or
unlocked status, the RF Output
field displays “MUTED” when
this condition occurred
detect signal not functioning
correctly. During Modulator
MCU Power On Self Test
(POST), the lock detect signal
from the downconverter phase-
locked loop (PLL) did not
indicate an unlocked condition
when one existed
Note: Since the MCU cannot
correctly detect locked or
unlocked status, the RF Output
field displays “MUTED” when
this condition occurred
The output converter
synthesizer lock detect circuitry
has malfunctioned
synthesizer lock detect circuitry
has malfunctioned
Contact Cisco Services
RF (1-4) DC
PLL unlocked
PLL unlocked
Major Downconverter (DC) PLL
synthesizer cannot lock. The output
frequency may not be correct. The
RF Output field displays “MUTED”
when this condition exists
frequency may not be correct. The
RF Output field displays “MUTED”
when this condition exists
Contact Cisco Services
RF (1-4)
EEPROM
failure
EEPROM
failure
Minor Modulator EEPROM failure. The
EEPROM on the modulator board is
not present or is not operational. If
this alarm is set, RF calibration data
is not available and the “RF (1-4)
Level not calibrated” alarm is also
active
not present or is not operational. If
this alarm is set, RF calibration data
is not available and the “RF (1-4)
Level not calibrated” alarm is also
active
Contact Cisco Services
RF (1-4)
Exceeded max
temp
Exceeded max
temp
Minor The internal temperature of the
GQAM is more than 70ºC (158ºF)
Remove vent obstructions
Provide more cooling and
ventilation
ventilation
Check the exhaust fans
Contact Cisco Services
Important! You should
check the temperature on
the GQAM daily or more
frequently if possible.
Important! You should
check the temperature on
the GQAM daily or more
frequently if possible.
RF (1-4) level
not calibrated
not calibrated
Minor One of the RF Level settings is not
calibrated to the correct frequency
or the EEPROM that stores the
calibration data is not operational
or the EEPROM that stores the
calibration data is not operational
Contact Cisco Services