VHF1 (136
‐
174 MHz)
Troubleshooting Flow Chart
29
6. Troubleshooting Flow Chart
6.1
Control Circuit
Control circuit check
Power-on display is
normal?
Palm microphone is
connected normally?
Crystal X8001
19.2 MHz is normal?
U2007(5VD) is normal?
U2001(3V3D) and
U2002(3V3_GPS) are
normal?
U2004(1V8D) is normal?
RF circuit cannot be
driven normally
Check
U2009 and U2008
Reconnect the palm
microphone
U2009(5VA_FGU) and
U2008(3V3A_FGU) are
normal?
Replace crystal
X8001
Check power-on circuit
and peripheral circuits of
U2007
Check power-on circuit
and peripheral circuits of
U2004
Check power-on circuit
and peripheral circuits of
U2001 and U2002
Check power-on circuit
and peripheral circuits of
U2010
Control circuit is normal
U2010(1V6D) is normal?
Confirm control circuit
Control head cable is
normal?
Replace the cable
Yes
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Содержание MD652
Страница 1: ...DIGITAL MOBILE RADIO...
Страница 5: ...UHF1 400 470 MHz...
Страница 9: ...Product Controls UHF1 400 470 MHz 2 Bottom View No Part Name No Part Name 1 Label 3 Fan 2 Fan Cover...
Страница 15: ...Exploded View and Packaging Guide UHF1 400 470 MHz 8 3 2 Packaging Guide...
Страница 53: ...43 9 PCB View Front Panel PCB View Top Layer X...
Страница 54: ...44 Front Panel PCB View Bottom Layer...
Страница 55: ...45 Main Board PCB View Top Layer...
Страница 56: ...46 Main Board PCB View Bottom Layer...
Страница 106: ...VHF1 136 174 MHz...
Страница 110: ...Product Controls VHF1 136 174 MHz 2 Bottom View No Part Name No Part Name 1 Label 3 Fan 2 Fan Cover...
Страница 116: ...Exploded View and Packaging Guide VHF1 136 174 MHz 8 3 2 Packaging Guide...
Страница 154: ...43 9 PCB View Front Panel PCB View Top Layer...
Страница 155: ...44 Front Panel PCB View Bottom Layer...
Страница 156: ...45 Main Board PCB View Top Layer...
Страница 157: ...46 Main Board PCB View Bottom Layer...
Страница 207: ...1616300000360 11 2014 L07157 2014 Hytera Communications Corporation Limited Hytera Communications Corporation Limited...