CONTROL UNIT
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● After the volume has been replaced, be sure to set the volume value on the test
mode calibration screen and the input test screen and check variations in the
volume value
● After adjusting or replacing a microswitch, always check ON/OFF of the switch
on the input test screen of the test mode
● Handle parts inside the Control Unit very carefully. Be especially careful to avoid
damage, deformation or loss of these parts. If any one of these parts is lost or
defective, it can result in damages and/or faulty operations
● When working with the product, be sure to turn the power off. Working with the
power on may cause an electric shock or short circuit
● Be careful not to damage the wires. Damaged wires may cause an electric
shock, short circuit or present a risk of fire
● Do not touch any parts that are not specified in these directions. Touching
unspecified locations may lead to electric shock or cause short circuits
● This work should be performed by site maintenance personnel or other skilled
professionals. Work performed by non-technical personnel can cause a severe
accident such as an electric shock
● Exercise due caution in performing soldering procedures. If soldering iron is
handled carelessly, there could be fires or burns
● Proceed very carefully when heating the thermal contraction tube. Careless
operations can result in fires or burns
● When fastening plastic parts, be careful not to tighten screws and nuts exces-
sively. Otherwise parts may be damaged, resulting in injuries from fragments, etc
● Be careful not to get hand or finger caught when removing or attaching the parts
● Disconnection and connection of connectors will be performed within the nar-
row cabinet space. Take due care not to scratch or otherwise injure yourself
● Take care when carrying the removed Control Units. Such heavy lifting carries a
risk of injury to back or shoulders
If the operability of the Control Unit is unsatisfactory, or if settings on the test mode calibration
screen are ineffective, the problem could be a defective mechanism, displacement of the position
where volume or microswitch has been fastened, or malfunctioning of volume or microswitch.
Carry out the following procedure to replace Control Unit or microswitch. Also be sure to grease
the mechanical components of the Control Unit once every 3 months.
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CONTROLLER UNIT
