Lucent DDM-2000 OC-3 User And Service Manual page 695

TAP-112
: Trouble Clearing
Page 9 of 16
8. !
CAUTION:
Replacement circuit packs may have option switches which must be
properly set before the circuit pack is installed.
Check circuit pack option switch settings for improper or invalid settings. If no
trouble is found, refer to DLP-523 and replace the circuit pack with the lighted
FAULT LED.
9. Is the MN LED off on the User Panel?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 10.
10. Is the FAULT LED lighted on the faceplate of the replacement circuit pack just
installed?
If YES, then do TAP-106.
If NO, then return to Step 2.
11. Is the FAULT LED on the faceplate of one or more circuit packs flashing?
If YES, then continue with Step 12.
If NO, then proceed to Step 19.
12. Find the circuit pack(s) with the flashing LED(s) in Table B below and go to the
indicated step.
Table B – Flashing LEDs
Circuit Pack With Flashing LED
DS1/DS1PM/T1EXT
DS3/STS1E
TGS
13. There is an incoming DS1 signal failure. Switch service to protection. If LED is
flashing on protection DS1/DS1PM or T1EXT, issue trouble report of bad
incoming signal at input to DS1/DS1PM or T1EXT circuit pack with flashing
LED(s). If LED is not flashing on protection DS1/DS1PM or T1EXT circuit
pack, replace service DS1/DS1PM or T1EXT circuit pack [DLP-523].
14. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
DDM-2000 OC-3 M
Issue 2, February 2000
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Step 13
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