Repair procedures, tests, and adjustments
Manpack Transceiver 2110 series Repair Guide
103
Figure 33:
Receive fault diagnosis flowchart 2
Is
RF at
RX_AUDIO
1.2 V p–p?
Receive fault
diagnosis
flowchart 2
Yes
No
Check RF at
Rx AUDIO
on RF/IF & Synthesiser
PCB
Check RF at
RX_AUDIO
on Audio & Control PCB
Is
RF at
Rx AUDIO
1.2 V p–p?
Yes
Replace RF/IF &
Synthesiser PCB
No
Check RF at
AUDIO_OUT_A/B
on
Audio & Control PCB
Is RF
at
AUDIO_OUT_A/B
1.2 V p–p?
Replace Audio &
Control PCB
Yes
No
Check and/or
replace ribbon cable
between RF/IF &
Synthesiser PCB and
Audio & Control PCB
Lower Front Panel
Assembly from chassis
Check RF at
AF_OUT
on
Front Panel PCB
Is
RF at
AF_OUT
1.2 V p–p?
Check and/or
replace ribbon cable
J2
between Audio &
Control PCB and
Front Panel PCB
No
Yes
Check internal speaker is
switched on
Check audio between
P2 pins 2 and 3 on
Front Panel PCB
Is audio
between pins 2 and 3
1.2 V p–p?
Replace Front Panel PCB
No
Yes
Is
there an audible
tone?
Replace internal speaker
No
Yes
Check external speaker is
selected
Check audio between
J4 pins 8 and 18 on
Front Panel PCB
Is audio
between pins 8 and 18
1.2 V p–p?
Replace Front Panel PCB
No
Yes
Check and/or
replace Handset audio
connector on Front
Panel Assembly
Summary of Contents for 2110 series
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