363-206-305 Detailed Level Procedure:
DLP-524
Issue 3, June 2000 Page 1 of 4
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
Install User Panel and Check –48 V DC Office Battery
1. Ensure ED-8C762-30, DDM-2000 FiberReach Wideband Shelf power cables
are installed on −48V A, −RTN A, −48V B, and −RTN B connectors located on
backplane of shelf. See Figure 1.
2. Obtain multimeter capable of measuring DC voltage in the 40 to 60 volt range.
3. Use multimeter to measure DC voltage at backplane power connectors. Place
negative probe on −48V A (−48 B) power connector and the positive probe on
−RTN A (−RTN B) power connector.
Reference: Voltage must be between −40.00 V and −60.0 V DC.
4. Was requirement met?
If YES, proceed to Step 6.
If NO, continue with Step 5.
5. Trouble in power feeder(s) or office battery distribution. Refer trouble to
organization that installed the shelf.
6. Obtain an ECC2 USR PNL user panel, COMCODE 107699076. See Figure 2.
7. Are fuses installed in User Panel?
If YES, continue with Step 8.
If NO, proceed to Step 9.
8. Remove both of the −48 V 3-amp fuses (COMCODE 406204230) at the top of
the User Panel.
9. Place the user panel into the AUX CTL slot and push the panel into the shelf
until it is seated. Use a flat-bladed screwdriver to tighten the screw in the
middle of the knob on the top front of the panel.
10. Fold down the handle and turn the knob clockwise until snug.
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