User's Manual

85894_M&R_TA7650C_A 1-1
1 MAINTENANCE AND TROUBLESHOOTING
1.1 Environmental check
Once a year:
1. Turn OFF the unit.
2. Disconnect all plugs.
3. Clean all metal surfaces using a humid rag to remove dirt and dust.
4. Clean the knobs and connectors.
5. Clean the loudspeaker cover.
6. Connect all plugs.
7. Turn ON the unit.
1.2 Alarm reading
If for some reason the “AL” light lit red and the display show one of these conditions, please
check TX BITE menu chapter 1.3 for abnormal readings.
Display text: Possible reason: Module or Board
Alarm
Failure on the PA module PA module
Mod
Failure on the Modulation module Modulation module
Front
Failure on the Front Module Front module
Main
Failure on the Main Module Main module
Ethernet
Failure communicating with the ethernet_PHY Main board
Codec
Failure communicating with the codec Main board
Spi
Failure on the spi bus Main board
Front
Failure communicating with the front module Main board
Remexp
Failure communicating with the rem expander Main board
Biteadc
Failure communicating with the bite adc Main board
Dsp
Internal DSP failure Main board
txSpare
Spare Spare