Service Manual

74
Chart 11—Portable-to-Base Repeat Failure
PORTABLE-TO-BASE AUDIO ISSUE
Ye s
Ye s
Ye s
No
Ye s
Ye s
Ye s
No
No
No
No
Ye s
NoNo
Verify dip switches
are set to normal
operation.
Is the
1kHz tone present @
J30-11?
Is the
1kHz tone present at
TP102?
Replace
transceiver.
Is
audio present @
TP125?
Check U104 and
replace if
necessary.
Is mobile
transmit deviation
3kHz?
Check solder connextions
for C132, C133, and T2.
Replace if necessary.
Complete.
Adjust R146 to obtain
3kHz deviation from
mobile.
Activate the
VRS750.
Is "VRS
BOTH" displayed
briefly?
Provide an on channel RF
signal with an Access or
Mode Steering PL to the
VRS750.
The VRS750 is not
enabled and will
not repeat.
Is
audio present @
TP128?
Is
there continuity
between J30-11 and
J40-28 on the flex
cable?
Replace the
transceiver.
Replace the flex
cable.