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Motorola Manuals
Radio
GP360 Series
Service information
300R1 Controller; Troubleshooting Charts - Motorola GP360 Service Information
Professional radio gp series; power distribution and controller information
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Also See for GP360
:
Basic user's manual
(62 pages)
,
User manual
(56 pages)
,
Operating instructions
(4 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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1.0
300R1 Controller
INT
AUDIO
NO
J403 Audio
at Pin 2 &
Pin 3
YES
Audio from Pin 41
Check Spk. Flex
ASFIC, U404?
Connection
Check
NO
U301
LV ZIF
ASFIC U404
EXT
PTT
Radio could
not PTT
externally
OPT_SEL_1 &
OPT_SEL_2
Pin 8 & 9
EXT
J403
SPKR
NO
Pin 9 low?
Pin 8
high?
YES
NO
ASFIC U404
Pin 14 & 15
high?
YES
Check
U420 Audio PA
PTT
Press PTT. Red
LED does not
light up
Audio at
YES
AudioPA
(U420)
input
PTT U409
(U447)
Pin 53
Check
low?
Audio PA
(U420)
YES
NO
Press PTT
Q502-2
NO
High?
Audio at
Check
Pin 2
Q502-2
U404?
voltage
YES
Check
YES
LED should
light up
J403
NO
Check
Accessories
low?
U409
YES
YES
Pin 52, 6
low?
Check
NO
See FGU
Accessories
Troubleshooting
Check
U404
TROUBLESHOOTING CHARTS
MCU Check
Power Up
Alert Tone
OK?
NO
NO
Speaker
Check
OK?
PB504
YES
YES
No
U409 EXTAL=
7.3728 MHz?
NO
LED
Q502,R501
OK?
U201 Pin 19
16.8 MHz
No
Replace
YES
Faulty
Component
5V at U247?
3.3V at U248?
YES
Check
MCU
U409
Reset
Pin 94
High?
chart
YES
MCU is OK
Chapter 2
Before replacing
Not able to pro-
YES
MCU, check SPI
gram RF Board
clock, SPI data,
ICs
and RF IC select
NO
Replace
Speaker
YES
NO
Check
Read Radio
Setup
OK?
YES
Reprogram the
correct data.
NO
See FGU
Troubleshooting
7.5V at
NO
NO
Pin 3/5 U247?
4_3.3V at Pin 1
U248
YES
Replace
U247/U248
NO
Check any short
to SWB+,
Vdda or Vddd
Check
Q400
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Computer Software Copyrights
Radio Power Distribution
300R1 Controller
Vhf Controller (for Models with Pcb...
Allocation of Schematics and Circuit Boards
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Chapters
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14
Table of Contents
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This manual is also suitable for:
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Gp340
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