ND-45383 (E) CHAPTER 5
Page 131
Revision CD 1.0
3.2 Loop-Back Diagnosis between the DLI and the Transmission Equipment
This paragraph explains the procedure of loop-back diagnosis between the DLI and the transmission equip-
ment when the DLI and the DRU are connected via the transmission equipment.
On the DLI card, various lamps are indicating as
follows.
(a) PA-DAIA card
• LINK (G): ON, flashing or OFF
• CRC (R):
• PCM (R):
• FRM (R): One or more than one
• MFRM (R): lamp illuminates.
• RMT (R):
• BLUE (R):
(b) PA-2DAIA card
• LINK0, 1 (G): ON, flashing or OFF
• ALM0, 1 (R): One or more than one
• RM/BLU0, 1 (R): lamp illuminates.
(c) PA-DAIC card
• LINK (G): ON, flashing, or OFF
• CRC (R):
• PCM (R):
• FRM (R):
• RMT (R):
• BLUE (R):
END
B
One or more than one
lamp illuminates.
FAULT • The transmission line between
the DLI and the DRU is faulty.
• The DRU is faulty.
Paragraph 4.2: DRU Fault
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