Instruction manual

7-14
3. The optional Output Channel Module for channel two is not installed or is improperly installed.
The number of output channels installed must agree with the number of output channels
used in
the Programmed Message Kit (PMK). The Standard Message Kit (SMK) is always
programmed for single channel output.
4. Failed audio channel on Series MDX-2 or an optional Output Channel Module.
If the error occurs while playing a file, the error was due to one of the first three possible causes.
If the error occurs immediately after turning on power to the Series MDX-2, the error was due to
the last possible cause.
If the error was due to the first or second cause while playing a message, the trouble will clear
automatically when audio is again detected while a message is playing. If the error is due to the
third cause, the trouble will clear automatically when the output is no longer loaded down while a
message is playing. If the error was due to the fourth cause, the trouble will clear automatically
when the module is properly installed and input power is cycled off and on.
When an audio channel error is indicated, perform the following:
1. Have the message re-recorded, shortening duration of the pause.
2. Verify that the optional Output Channel Module is installed properly.
If, after the above procedure is completed, the trouble condition persists, the trouble condition is
caused by failed circuitry on the Series MDX-2. There are no field correctable failed circuitry
problems on the Series MDX-2 or Output Channel Module (MDV-OCM) and these components if
defective shall be replaced immediately following Section 7-1 - SAFEPATH
®
Module
Replacement Procedure on Page 7-14.
Section 7-2 - SAFEPATH
®
Panel Module Replacement Procedure
Return any modules that are malfunctioning, after all troubleshooting operations have been
performed, for factory repair or replacement. If it is necessary to return a Dual-Circuit
SAFEPATH

Panel module, replace the malfunctioning modules immediately in the following
manner:
1. Disconnect battery backup power from the Dual-Circuit SAFEPATH
®
Panel.
2. Disconnect AC input power from the Dual-Circuit SAFEPATH
®
Panel.
3. Identify all wiring connections to make sure they will be reconnected identically on the
replacement.
4. Disconnect all wiring connections.
5. Remove the malfunctioning module(s) and install the replacement module(s). Perform all
checkout procedures described in the “Installation” section of this manual to make sure the
replacement module(s) is operating properly.