42
Service Manual Signum 
Replacing Components
Replacing the Main PCB 
  Warning
  Disconnect the cable from the power source. 
  Important note:
  Do not connect or disconnect live power cables to or from the 
equipment; always disconnect the power cable from the wall 
socket (mains supply) first.  Otherwise, components could be 
destroyed.
  Different versions of this PCB (see picture on the left) can be 
installed in the unit.
–  Loosen and remove six screws (O) from the data output plate (U).
–   Cut through the warranty stickers (seals).
–  Remove the data output plate (U).
–  When you replace the digital PCB, be sure that all cables are reconnected. 
AUT23155a.JPG
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AUT24188.JPG
Z
U