Sailor RT5020 - Fault Identifying Tests (CU5000)

VHF 5000 System Functional unit workshop service
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3.4.5 Fault Identifying tests (CU5000)
The CU5000 is water resistant, and shall never be disassembled for repair. The following flow describes a
checklist to go through before determining the CU5000 should be replaced.
(CU-01)
check cabling &
(CU-03)
Key/
(CU-04)
Internal
(Replace)
Replace CU
Test Flow
Terminated
40467
(CU-05)
Hook?
(CU-06)
Earpiece?
Passed
Passed
Passed
Passed
Passed
Failed
(SPD-flow)
data
Failed
(CU-07)
PTT?
Power up system
SPARC-II
(CU-08)
Microphone?
(CU-09)
External
Passed
Passed
(CU-02)
Accessory
Passed
Failed
Failed
Failed
Failed
Failed
Failed
(Replace)
Replace BB
(Base band
board)
check?
display?
speaker?
speaker?
(CU-01)
check cabling &
(CU-03)
Key/
(CU-04)
Internal
(Replace)
Replace CU
Test Flow
Terminated
40467
(CU-05)
Hook?
(CU-06)
Earpiece?
Passed
Passed
Passed
Passed
Passed
Failed
(SPD-flow)
data
Failed
(CU-07)
PTT?
Power up system
SPARC-II
(CU-08)
Microphone?
(CU-09)
External
Passed
Passed
(CU-02)
Accessory
Passed
Failed
Failed
Failed
Failed
Failed
Failed
(Replace)
Replace BB
(Base band
board)
check?
display?
speaker?
speaker?
Fig. 26 (CU) - CU5000 verification flow.
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