Motorola Astro Xts5000 Detailed 6881094c31 E Manual

							November 16, 20066881094C31-E
5-40Troubleshooting Charts: TX RF (UHF R1/700-800 MHz)
TX RF (UHF R1/700-800 MHz)—Page 2
MAEPF-27420-B
RAWB+
about
7.2 Vdc? Measure
RAWB+
at Q107-drain
No
No
No
Ye sYe s Ye s
Check
continuity V.gate
about 2 to
3 Vdc?Check
continuity
DC bias is OK,
control is OK,
RFIN is OK,
PA has low gain
Replace
Q107NoYe sMeasure RF
level at
pin 6 of Q107 Is
unit
VHF?
No
Ye sRemove SH101
and check for
parts off pad Level
about
+35 dBm?
Replace U102.
For VHF, check under
SH101. if all parts soldered,
replace U102.Measure
gate bias
at L108 RAWB+
about
7.2 Vdc? Measure
RAWB+
at U102-6
No
No
Ye s Ye s
TX7V
about
7.2 Vdc?Check
continuity
Measure
Vgate at TP111,
normally 4 to
5.5 Vdc Measure
TX7V at
U102-14
DC bias is OK,
control is OK,
RFIN is OK, driver
has low gainVgate
> 4 Vdc?
21
3
4 
						

							6881094C31-ENovember 16, 2006
Troubleshooting Charts: TX RF (UHF R1/700-800 MHz) 5-41
TX RF (UHF R1/700-800 MHz)—Page 3
INT > 5 Vdc? Vgate at TP111
is low (< 4 Vdc)
Measure INT 
at TP104
Ye s
No
No
Ye sYe sNoReplace
Q108
INT is low.
Measure VLIM
at TP119
PCIC is
programmed.
Measure TEMP
at R130Bad PCIC
Replace U104 VLIM
about 2 to
3 Vdc?
No
Ye s Measure
RFIN at
TP101TEMP
< 1.0 Vdc at
25C?
RFIN is low, INT
is low, bad PCIC,
replace U104TP101
< 0.5 Vdc?Low output power,
RFIN is high, check
RF detectors and
op amp U106.
Repair defects Repair temperature
sensor circuit
(U103, Q109,
R130)
4
4 TXINH
< 1 Vdc? TX7V is low.
Measure TXINH
at P1-19, Q101-b
No
No
Ye s Ye s
RXH
< 1 Vdc?
No
Ye sBad PCIC
Replace U104 RXH
> 5 Vdc?Bad control
signal from
VOCON
Trace dc levels
through switching
transistors Q101,
Q102, Q103, 
and Q106
Replace bad
transistors Measure RXH
at U104-23
and Q103-b
3
MAEPF-27476-O 
						

							November 16, 20066881094C31-E
5-42Troubleshooting Charts: Keyload Failure
5.17 Keyload Failure
MAEPF-27388-B
No
NoYe s
Ye s NoKeyload Failure 
KEYLOAD
message
displayed?
With KVL attached to radio
and radio on, initiate a
keyload by pressing PTT on
the keyloader and look for
activity on J701-1
Ye sVerify
connection
across J701
Repair
connection Correct
equipment? Obtain correct
KVL and
cable
No Verify and repair
connection of UC_CTS,
UC_RS232DIN_USB-,
and UC_OPT_SEL2 signals
from KVL to universal
connector to J101Verify the use of the correct secure kit and key loader:
With KVL attached to
radio and radio on,
verify display
message KEYLOAD
Activity? Verify connection 
of KEYFAIL
from the universal
connector pin 13 to
J101-2 and D301
Ye s NoGood
connection? Repair
connection
Replace
secure
module Ye s Good
connection?
Verify operation of
voltage translator
circuit by seeing
activity on R315
NoReplace
translator
circuit
Ye s Translator
circuit OK?
Replace
VOCON
boardThis failure relates only to secure-
equipped radios and indicates a
failure to load key with the KVL
indicated by the message
KEYFAIL and key-fail tone.
Typical failure modes would be:
1) Open between universal
connector uC which places radio
in Keyload mode.
2) Use of wrong KVL or KVL cable
for XTS 5000 radio.
3) Failure of secure module.Synopsis XTS 5000 UCM Kits: 
Software Kits:
  NNTN4006A - DES, DES-XL, DES-OFB
  NTN9837A - DES, DES-XL, DES-OFB with DVP-XL
  NTN9838A - DVI-XL
  NTN9839A - DVP-XL
  NNTN4197 - AES
  NNTN4198 - AES with DES, DES-XL, DES-OFB
Hardware Kits:
  NTN9738C
  NNTN5032A
Use KVL - 3000 or later model Keyloader.  Use with
cable TDN9390. 
						

							6881094C31-ENovember 16, 2006
Troubleshooting Charts: Secure Hardware Failure 5-43
5.18 Secure Hardware Failure
MAEPF-27387-O
Ye s
No Ye s
No No
NoFail
09/10 or 09/90
Secure Hardware
Failure
Connections
good?Repair
connections
Ye sReplace
secure
module Verify electrical activity
at the following signals
at power up: Connections
good? Repair
opens
No Ye s
Is
known good
module
available?Replace module
with known good
one and retestVerify connections
to secure module
through J701
Signals
good? Ye s
Replace
secure
module
Radio
functions with
known good
module?
Replace
respective
source IC or
VOCON boardThis 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 DSP and secure module. The
secure module is not considered field repairable
so troubleshooting is limited to verifying a
problem with the module and replacing.
Typical failure modes would be:
1) Open between secure module and VOCON
board at J701.
2) Failure of the SSI bus that the DSP uses to
communicate with the secure module.
3) Failure to get proper supplies and grounds 
to J701.Synopsis
Use ohmmeter to electrically
verify the following signal
connections to source IC:
Signal @ J701         Source
ENC_SSI_DI             R403
ENC_SSI_DO           R402
ENC_SSI_CLK         R405
RESET_ENC            R418
Verify bias of following signals:
Signal @ J701        Nominal Bias
UNSW_B+      7.5VDC+/-1.0VDC
SW_B+           7.5VDC+/-1.0VDC
GND                                     GNDSignal @ J701   Source
ENC_SSI_DI        R403
ENC_SSI_CLK     R405 
						

							November 16, 20066881094C31-E
5-44Troubleshooting Charts: Secure Hardware Failure
Notes 
						

							Chapter 6 Troubleshooting Waveforms
This chapter contains images of waveforms that might be useful in verifying operation of certain parts 
of the circuitry. These waveforms are for reference only; the actual data depicted will vary depending 
on operating conditions.
6.1 List of Waveforms
Table 6-1 lists each waveform and the page on which the waveform can be found.
Table 6-1.  List of Waveforms
WaveformPage No.
13 MHz Clock 6-2
16.8 MHz Buffer Input and Output 6-3
32.768 kHz Clock Outputs 6-4
SPI B Data 6-5
Receive Serial Audio Port (SAP) 6-6
Receive Baseband Interface Port (RX BBP) 6-7
Transmit Baseband Interface Port (TX BBP) 6-8 
						

							November 16, 20066881094C31-E
6-2Troubleshooting Waveforms: 13 MHz Clock
6.2 13 MHz Clock
13 MHz clock from U301 to U501.
Trace 1: Trace recorded at C303 on the NTN9564 board.
Similar waveform is visible on C339 on the NNTN4563, NNTN4819, NNTN4717 & NNTN5567 
VOCON boards.
Figure 6-1.  13 MHz Clock Waveform
MAEPF-27490-O 
						

							6881094C31-ENovember 16, 2006
Troubleshooting Waveforms: 16.8 MHz Buffer Input and Output 6-3
6.3 16.8 MHz Buffer Input and Output
Trace 1: Buffer input at R452.
Trace 2: Buffer output at C452 or C450 (NNTN5567).
Note: These components are under shield SH101 on the NNTN4563, NNTN4819, & NNTN4717 
VOCON boards.
Figure 6-2.  16.8 MHz Buffer Input and Output Waveforms
MAEPF-27491-O 
						

							November 16, 20066881094C31-E
6-4Troubleshooting Waveforms: 32.768 kHz Clock Outputs
6.4 32.768 kHz Clock Outputs
Trace 1: Output at C313 (to real-time clock of GCAP II IC) or R543 (NNTN5567).
Trace 2: Output at U302, pin 2 (to Patriot IC CKIL input).
Note: These components are under shield SH102 on the NNTN4563, NNTN4819, & NNTN4717 
VOCON boards.
Figure 6-3.  32.768 kHz Clock Outputs Waveforms
MAEPF-27492-O 
						

							6881094C31-ENovember 16, 2006
Troubleshooting Waveforms: SPI B Data6-5
6.5 SPI B Data
Trace 1: GCAP II IC chip enable at R539 (Note active high) or TP_MAKO_CE (NNTN5567).
Trace 2: SPI data clock at Test Point SCKB or at SCKB (NNTN5567).
Trace 3: SPI data to GCAP II IC at Test Point MOSIB or SPI data from Patriot at Test Point 
MOSIB (NNTN5567).
Figure 6-4.  SPI B Data Waveforms
MAEPF-27493-O