Motorola PTP 500 User's Guide Page 427

  • Download
  • Add to my manuals
  • Print
  • Page
    / 447
  • Table of contents
  • TROUBLESHOOTING
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 426
PTP 300 and PTP 500 Series User Guide Testing link end hardware
phn-1115_006v000
Sep 2010
8-7
Ethernet LED did not flash 10 times
When the PIDU Plus is connected to the power supply and the green Power LED
illuminates, there should be a 45 second delay, following which the yellow Ethernet
LED should flash 10 times.
If the Ethernet LED did not flash 10 times, proceed as follows:
Procedure 8-7 Ethernet LED did not flash 10 times
1
Remove and examine the cable that connects the PIDU Plus to the LPU
or ODU.
2
Check that the wiring to pins 4&5 and 7&8 is correct. For example, the
wiring to pins 4 and 7 may be crossed.
3
Use the LPU (if installed) to check that power is available on the cable
to the ODU. Access the connections by rotating the LPU lid as shown in
Figure 8-3. Sl
acken the lid nut but do not remove it.
4
Test that test point P1 on the LPU PCB corresponds to pin 1 on the
RJ45. Repeat for points P2 to P8.
5
Check that the PWR LED near the top right of the LPU PCB is
illuminated to indicate power in the Ethernet cable (Figure 8-3).
6
If any test fails, replace or repair the cable that connects the PIDU Plus
to the LPU or ODU.
Figure 8-3 PTP LPU test points and PWR LED
Page view 426
1 2 ... 422 423 424 425 426 427 428 429 430 431 432 ... 446 447

Comments to this Manuals

No comments