Kidde VM-1 - Page 147

Chapter 7: Service and troubleshooting
P/N 3101890-EN • REV 006 • ISS 21JUN18 139
Address
Label Source Description
0620
Battery Internal Resistance Trbl PS10-4B Battery is degraded
0620
Demux Audio Input ACHS The digitized audio data is missing
0620
Waiting for SDU Download DACT A database download from the VM-CU is in
progress or incomplete
0621
NAC Charge Pump Trouble PS10-4B • The charge pump for the NACs is in trouble
state
• The NAC charge pump voltage is below
30V, preventing the NACs from operating
• The power supply is defective
0621
Amplifier Overcurrent ACHS • A short is detected on the circuit
•
The speaker wattage tap setting exceeds the
output rating of the amplifier
0622
Primary Audio Output DC ACHS • There is an open DC NAC circuit, or missi
ng
or wrong value EOL resistor
• A short is detected on the a DC NAC circuit
0622
Rail Over Current Trouble PS10-4B The power supply detected an over current
condition (> 10A)
0623
Battery Charger Trouble PS10-4B The charger may not be able to charge the
batteries
0623
Primary Audio Output Analog ACHS • There is an open Audio NAC circuit, or
missing or wrong value EOL resistor
• A short is detected on the Audio NAC circuit
• The output voltage jumper is set wrong
0624
Application Fault PS10-4B The power
supply detected a fault while testing its
internal subsystems
0624
Backup Audio Output Analog ACHS • There is an open audio NAC circuit, or
missing or wrong value EOL resistor
• A short is detected on the Audio NAC circuit
• The output voltage jumper is incorrectly set
0625
Amplifier Daughter Board ACHS The board is defective
0626
Thermistor Supervision PS10-4B The thermistor is either missing or not functioning
0626
Fuse Supervision ACHS There is an open fuse on the amplifier
0627
Measurement Trouble PS10-4B The A/D readings are not reliable
0627
PAL Supervision ACHS The PAL chip on the amplifier is bad
0628
NAC Class A Mismatch PS10-4B •
The expected Class A configuration does not
match actual hardware
• The CLA-PS10 adapter is missing
0630
Riser Supervision FTCU A short or open is detected on the telephone riser
0631
User Interface FTCU A board fault is detected
0632
Master Phone Supervision FTCU A short or open occurred on the phone handset