Motorola Astro Digitalport Saber Troubleshooting 68p81076c10 A Manual

 
10-11 
Chart 17 . 09/10, Secure Hardware Failure
Repair opens.
Fail 09/10
Secure Hardware
Failure
Verify connections
to secure module
through J801.
Connections
good?
No
Yes
Synopsis
This failure relates only to
secure equipped radios and
indicates a power up self-test
failure for the secure module.
More specifically this failure
indicates a failure in
communications between the
Host µC and secure module.
The secure module is not
considered field repairable so
troubleshooting is limited to
verifying a...

 
10-12 
Chart 19 . Key Load Fail
Replace U206.
Repair
connection.
Verify and repair
connection of
OPT_SEL2/KEYLOAD*
from KVL to Universal
connector to J206.
Verify the use of the correct keyloader per the following table:
Secure Module Kit(s) KVL Kit(s) Encryption
NTN7770 T3010DX DVP
NTN7771 T3011DX DES/DES-XL
NTN7772 T3011DX DES/DES-XL
NTN7773 T3012DX DVI-XL
NTN7774 T3014DX DVP-XL
NTN7329 T3012DX & T3010DX DVI-XL & DVP
NTN7332 T3011DX & T3010DX DES-XL & DVP
NTN7331 T3011DX & T3014DX DES-XL & DVP-XL...

 
10-13 
Chart 21 . Keypad Error
PJ6 PJ1 PJ0
PL7
PL6
PL5
PL4
PL3
PL2
1
2ABC 3DEF
4GHI 5JKL 6MNO
7PRS8TUV
9XYZ*
0
#
HOME
R0W1
R0W2
ROW3
ROW4
ROW5
ROW6COL1 COL2 COL3 U206
Verify keypad
model with RSS.
If model checks
good replace
U206.
Synopsis
This chart relates to a failure
in reading the keypad.  Basic
Failure modes are as follows:
1) Failure in flex circuit.
2) Bad connection.
3) Defective keypad.
4) Defective port in SLIC.
Keypad
Error.
Verify operation of
keypad per Button
Check flow chart C.20....

 
10-14 
Chart 23 . Zone/Channel Select Error
Verify codeplug
programming
with RSS.  If
codeplug checks
good replace
U206.
Channel          RTA3      RTA2    RTA1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
10
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1    RTA0
  10             0        
  2
0             0        
  3
0             0        
  4
0             0        
  5
0             1        
  6
0             1       
  7
0             1        
  8
0             1        
  9
1             0        
  10
1             0...

 
10-15 
Chart 25 . No Display
Replace U204.
Synopsis
This chart relates to a failure
in the display.  The display is
considered not field repairable
and must be replaced as a uint.
Basic Failure modes are as
follows:
1) Non-display model radio.
2) Bad connection.
3) Defective µC.
No Display.
Verify display model
with RSS.Verify signal activity on
J601-2 and J601-1
during mode select
changes.
Activity?Verify J601
connections and bias.Yes
Yes No
NoWrong model?
Fix with RSS.Yes
No
J601 checks?
Repair...

 
10-16 
Chart 26 . No TX Modulation
Replace U406 if
continuity of
signals
EXT/INT_SPKR
and MICEN from
U401 to U406
verifies and PTT
was initiated
from external.
*Note: Q401 ia a
non-inverting
transistor buffer.
Synopsis
This failure indicates a lack of
transmit modulation with the
fault lying with the vocoder.  It
assumes no power up fail codes
were displayed.  Since all
modulation modes occur
through the same path, this
failure applies to digital/
PL,DPL, etc.  Failure modes are
as follows:
1) Error...

 
10-17 
Chart 27 . 800MHz No TX Deviation
Replace J401
header.
No TX Deviation
800MHz TransceiverAudio at pin
15 of J1?
Set radio to test mode CSQ.
Connect radio to R4005B test box
or equivalent and inject a 1KHz
mic signal with amplitude
sufficient to provide 3KHz
deviation (about 11mV RMS).PTT radio using external
PTT switch.  Verify signals
per Figs. W8 and W10.
No
Yes
Check
continuity
between pin
15 of J1 and
pin 5 of U302. No
NoMAEPF-24405-O
YesYes Audio at pin 5
of U302?
Audio at pin 30
of...

 
10-18 
Chart 29 . No RX Audio
Synopsis
This failure indicates a lack of
received audio with the fault
lying with the vocoder.  It
assumes a functional
transceiver board and no power
up fail codes were displayed.
Since all received signal modes
occur through this same path,
this failure applies to digital/
PL,DPL, etc.  Failure modes are
as follows:
1) Missing DSP IRQB interrupt.
2) Lack of 2.4 REF clock and/or
data from ABACUS.
3) Missing clock or data on SSI
port from ADSIC.
4) Non functional control...

 
10-19 
Chart 30 . VHF/UHF/800MHz Receiver RF
Bad SINAD
Bad 20Db Quieting
No Recovered Audio
Spray or Inject 1st IF into 
XTAL Filter
FL1.
Audio
Heard?
Is
circuit 
from Q601 to
U401
good?
14.4MHz
at ABACUS
(U401) pin
15? Check 2nd LO
Cntrl Voltage
at R413 Inject RF
into J2
IF Signal
at L605?
RF
Signal
at T1 (VHF/
UHF), T202 
(800MHz)
?
RF
Signal
at L8 (VHF/
UHF), L180
(800MHz)
?
RF
Signal
at L6 (VHF/
UHF), L201
(800MHz)
?
RF
Signal at
CR109 (VHF/
UHF), CR102
(800MHz)
?
Check harmonic filter L126-127,...

 
10-20 
Chart 32 . 800MHz Frequency Generation Unit (FGU)
FGU No Lo Injection/TX
Unlock
A
NO
MAEPF-24390-A
YES
VDC at
V Con Pin 1
U307