Motorola MSF 5000 Instruction Manual page 233

MSF
5000
Instruction Manual
Appendix
B
Error Codes
Audio Error Codes
Audio Error Codes
Table B-2
Audio Error Codes
SUE
oe
Ca,
ive ins
ter
Lowy
A00 Private Line
(PL) encoder failure Replace SSCB.
may
be
faulty:
¢
PL1R-2R
DAC/low
pass filter.
¢
PL
audio sample signal.
©
SSCB
processor
A/D
converter.
A01
Alert
tone encoder failure The following circuits on
the
SSCB Replace SSCB.
may
be
faulty:
¢
alert tone 1R-2R DAC/low
pass
filter.
* alert tone sample signal.
¢
SSCB
processor
A/D
converter.
A02 PL
encoder-to-TP4 path failure The following circuits on
the
SSCB Perform
the
alignment procedure,
may
be
faulty:
refer to
Chapter 4
-
Alignment. If
¢
PLencoder-to-TP4
path.
failure still occurs, replace SSCB.
¢
mod audio sample.
¢
EEPOT
4 (maximum deviation
adjust) adjusted incorrectly.
A03 Alert
tone encoder-thru-splatter filter The following circuits on the
SSCB
Perform the alignment procedure,
EEPOT
failure
or maximum deviation adjust
may
be
faulty:
refer to
Chapter
4
-
Alignment. If
* defective transmit alert tone
gate.
failure still occurs, replace SSCB.
¢
limiter
splatter filter.
¢
EEPOT
4 adjusted incorrectl
(maximum deviation adjust).
A04 Alert
tone encoder-to-RX1 audio
A
problem between the quad audio Perform the alignment procedure,
path or
RX
level EEPOT
failure buffer and the
RX1
audio signal, refer to
Chapter
4
-
Alignment. If
indicating
the
following circuits of failure still occurs, replace SSCB.
the
SSCB may
be
faulty:
* alert tone loopback gates.
©
flutter fighter bypass gate.
e
RX PL
high
pass filter.
e
EEPOT
5 (RX
level)
adjusted
incorrectly.
e
de-emphasis circuitry.
e
expandor bypass gate.
e
RX1 audio
sample.
A05
Alert
tone encoder-to-RX1 squelch
detector failure
The receiver was not
fully
quieted
Perform the alignment procedure,
during power-up diagnostics,
refer to
Chapter
4
-
Alignment. If
indicating
the
following circuits of failure still occurs, replace SSCB.
the
SSCB may
be faulty:
© defective
EEPOT
3
(receiver
squelch level).
¢
defective squelch noise amp.
©
defective receiver squelch
detector.
Description
The following
ircuits
on the
SSCB
68P81092E09
3/14/94
B-11
MSF
5000
Instruction Manual
Appendix
B
Error Codes
Audio Error Codes
Audio Error Codes
Table B-2
Audio Error Codes
SUE
oe
Ca,
ive ins
ter
Lowy
A00 Private Line
(PL) encoder failure Replace SSCB.
may
be
faulty:
¢
PL1R-2R
DAC/low
pass filter.
¢
PL
audio sample signal.
©
SSCB
processor
A/D
converter.
A01
Alert
tone encoder failure The following circuits on
the
SSCB Replace SSCB.
may
be
faulty:
¢
alert tone 1R-2R DAC/low
pass
filter.
* alert tone sample signal.
¢
SSCB
processor
A/D
converter.
A02 PL
encoder-to-TP4 path failure The following circuits on
the
SSCB Perform
the
alignment procedure,
may
be
faulty:
refer to
Chapter 4
-
Alignment. If
¢
PLencoder-to-TP4
path.
failure still occurs, replace SSCB.
¢
mod audio sample.
¢
EEPOT
4 (maximum deviation
adjust) adjusted incorrectly.
A03 Alert
tone encoder-thru-splatter filter The following circuits on the
SSCB
Perform the alignment procedure,
EEPOT
failure
or maximum deviation adjust
may
be
faulty:
refer to
Chapter
4
-
Alignment. If
* defective transmit alert tone
gate.
failure still occurs, replace SSCB.
¢
limiter
splatter filter.
¢
EEPOT
4 adjusted incorrectl
(maximum deviation adjust).
A04 Alert
tone encoder-to-RX1 audio
A
problem between the quad audio Perform the alignment procedure,
path or
RX
level EEPOT
failure buffer and the
RX1
audio signal, refer to
Chapter
4
-
Alignment. If
indicating
the
following circuits of failure still occurs, replace SSCB.
the
SSCB may
be
faulty:
* alert tone loopback gates.
©
flutter fighter bypass gate.
e
RX PL
high
pass filter.
e
EEPOT
5 (RX
level)
adjusted
incorrectly.
e
de-emphasis circuitry.
e
expandor bypass gate.
e
RX1 audio
sample.
A05
Alert
tone encoder-to-RX1 squelch
detector failure
The receiver was not
fully
quieted
Perform the alignment procedure,
during power-up diagnostics,
refer to
Chapter
4
-
Alignment. If
indicating
the
following circuits of failure still occurs, replace SSCB.
the
SSCB may
be faulty:
© defective
EEPOT
3
(receiver
squelch level).
¢
defective squelch noise amp.
©
defective receiver squelch
detector.
Description
The following
ircuits
on the
SSCB
68P81092E09
3/14/94
B-11