MM-TA-12B Muting Module
Instruction Manual
Troubleshooting and Maintenance
Status /
Error Code
34
35
—
(Solid)
MSSI Error*
- One or both channels shorted to power or
ground
- Input channels shorted together
- One channel did not open
- Failed Simultaneity (>3sec)
- Failed Handshake
- Excessive EMI/RFI noise
Override Error
- Override Input closed at power-up
- Check Override Input wiring and connector
- Excessive EMI/RFI noise
—
(Flashing)
36
Mute Lamp Error
- Check/Replace Lamp (open or short)
- Check wiring and connector
- Check DIP switch settings
31
37
DIP switch Error
- Check DIP switch settings
- Replace Module
32
33
Condition / Error Type /
Action
System OK
Mute Cycle
OSSD Output Error
- One OSSD is shorted to power/ground
- OSSDs are shorted together
Reset Input Error
- Reset Input Shorted/Closed
Module Error
- Excessive EMI/RFI noise
- Internal failure, replace Module
Status /
Error Code
50
51
Backdoor Timer Expired
- Check muting device operation
- Check muting device wiring
- Check DIP switch settings
- See manual Section 1.14
Mute Timing (Simultaneity) Error
- The second mute device of a pair (M1-M2 or
M3-M4) did not actuate within 3-seconds of
the first device.
- Check muting device operation
- Check wiring
52
Mute Enable Open Error
- ME input was open when a mute cycle was
attempted
- Check Mute Enable wiring
- Check DIP switch settings
39
61
USSI Input Error**
- One or both channels shorted to power or
ground
- Input channels shorted together
- One channel did not open
- Failed Simultaneity (>3sec)
- Failed Handshake
- Excessive EMI/RFI noise
40
45
Condition / Error Type /
Action
EDM 2 Error
- Check wiring
- Check operation of Device(s) under control
- Check DIP switch settings
- Switching transition >200ms
- Excessive EMI/RFI noise
2-Channel EDM Error
- Check wiring
- Check operation of Device(s) under control
- Failed Simultaneity between EDM1 & EDM2
(>200ms)
- EDM open > 200 ms after OSSDs go OFF
- Replace Module
Mute Enable Input Error
- Excessive EMI/RFI noise
Figure 5-1. Troubleshooting conditions, using the Module’s Diagnostic Display
38
EDM 1 Error
- Check wiring
- Check operation of Device(s) under control
- Check DIP switch settings
- Switching transition >200ms
- Excessive EMI/RFI noise
- EDM open > 200 ms after OSSDs go OFF
*
*Fault is cleared by cycling the input from closed-to-open-to-closed.
**Fault is cleared by cycling the input from closed-to-open.
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