Toa SX-2000 Series Installation - Manual (Page 152)

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8. KEY LOCK SETTINgS AND CANCELLATION
8.1. SX-2000AI and SX-2100AI (DIp Switch 1 Operation)
It is possible to disable the input volume controls and channel keys in order to prevent mistaken operation.
the input volume level set while the key lock function is used takes effect after the key lock has been released.
Note
When the SX-2000 system is placed in an emergency condition during key lock off, the emergency sound
level preset with the front-mounted volume control knob is invalid, but that defined by the SX-2000 Setting
Software is valid.
During key lock oN, however, the volume level set with the input volume control knob is valid even if the SX-
2000 system is placed in an emergency condition. Before setting key lock function to oN, be sure to adjust the
input volume control knob corresponding to the emergency source channel for a proper sound level.
Keys that can be locked
Step 1. remove the protective cover on the SX-2000AI's or SX-2100AI's front panel by removing the screws
securing it using a Phillips screwdriver.
01234
5678
9AB
CD
EF
01234
5678
9AB
CD
EF
Protective cover
Screw
DIP switch
Inside of the protective cover
Step 2. Set the switches.
2-1. If setting a key lock function:
Set DIP switch 1 to oN. When keys have been locked, the KEy locK
indicator in the fluorescent display lights.
2-2. If canceling a key lock function:
Set DIP switch 1 to off. When key locking has been cancelled, the
KEy locK indicator in the fluorescent display goes off.
Step 3. replace the protective cover.
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Note: DIP switch 1 is set to
off by default.
Note: the figure shows the SX-2100AI.