Functional unit workshop service VHF 5000 System
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3.3.4 Fault Finding (HS5001)
Fault finding on the HS5001 transceiver handset is done following exactly the same flow as for verifying the
handset connector (HSC – Figure ??). Failing test should lead to errors in the handset functions tested, rather
than following the suggested subsequent flows. Although any conclusion on handset errors should only be done
if a new replacement handset works perfectly with the transceiver used for validation.
Common user faults
The most common operational faults are collected below:
Handset fixed upside down in cradle.
The cradle contains a single magnet that matches the handset reed-
switch. This means the hook-on state is only detected if the handset is hooked on to the cradle correct. The hook-
on state can be checked the following way:
• Hook-on handset
• Press PTT while handset is hooked
• TX lamp on transceiver is not activated during PTT if the handset is hooked on.
3.4 Servicing the CU5000 remote control unit
Functionally there exists only a single version of the CU5000 remote control unit. The unit is operational with
3.4.1 Software
The CU5000 remote control unit contains software. Software update is possible in the units, but is not intended.
Software update of the CU5000 is not intended performed on a regular basis, but is rather seen as a possibility
to correct possible errors.
The CU5000 software is not contained in the transceiver software file, but will be distributed as a separate image.
The software update process is described in the SB5006 manual.
3.4.2 Manuals
There is no specific operations manual to the CU5000. Operation of the unit is fully described in the transceiver
manual.
3.4.3 Service tool
The SB5006 service tool, that is used to update and configure the RT5022/RT5020 transceiver software, can
also be used for updating the CU5000 software, if required.
3.4.4 Service concept – CU5000 Semi-functional Control Unit
The CU5000 Semi-functional Control Unit with integrated handset is not repairable. If taken apart in attempts
to repair and subsequent re-assembling, the unit will not retain its waterproof integrity. Hence, if confirmed faulty
the CU5000 Control Unit w/handset must be replaced in it’s entirety.
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