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Reception Check
Power ON
Does the
NO
display work
properly?
YES
Is the display
normal?
YES
Is the voltage
of TP2 about 18 V at
960 MHz?
YES
Is the voltage
of TP2 about 20 V at
1300 MHz?
YES
Is the voltage
of TP3 about 2.0 V at
512 MHz?
YES
Proceed to Microprocessor
check.
TROUBLESHOOTING
Does display
freeze showing Waiting
for DSP or DSP
Loder ....
Is EEPROM check
program OK?
NO
Defective IC307, LCD
and/or associated
circuit.
NO
Defective
PLL circuit
(IC4) or
VCO
circuit.
NO
NO
YES
NO
NO
Defective IC301.
YES
Press 0 while the scanner shows -Welcom To-
Object Oriented Digital Trunking RadioShack.
The scanner shows System Tests: Select a
Test... Exits if no key is pressed. Then press 5.
The scanner shows EEPROM Test Erase
Momory ENTER if APPROVE CLEAR to EXIT.
The scanner shows Testing, and automatically
starts the EEPROM test program.
The scanner shows GLOB EEPROM area
initialized to defaults. Press any key. Then press
The scanner shows Initializing the File system
then File system initialized to defaults. Press any
The scanner initializes the working memory.
Note: This procedure clears all information you
stored in the scanner's working memory.
10
Proceed to DSP
section (Boot
section) check.
EEPROM check program
procedure as follows:
Power on the scanner.
Then press ENT.
any key.
key. Then press any key.
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