363-205-401
Power Up:
Issue 7, March 1997
Page 1 of 4
DLP-510
Install Bank Fuse Unit (BFU) in Power Shelf
SUMMARY: The AUG11 or 40D BFU is used in the J1C182BA, J1C182BB, or
J1C182PB-1 power shelf. The BFU (without fuses) should be installed with the power
shelf equipped The the fuses are installed to verify that they do not blow.
1.
Verify -48 volts DC (-42 to -56) on one of the following units installed in the
power shelf;
• GND to -48L on LDU,
• GND to -48L on RCU,
• GND to -48L (1) (2) (3) on RSU,
• -48RTN( ) to -48V( ) on TB1 of J1C182PB shelf.
2.
Get required number of BFUs (refer to Figure 1 and Table A) to be inserted
into RT power shelf.
Table A
BFU Locations
BFU
Associated Equipment
Slot
J1C182PB-1
J1C182BA
J1C182BB
BFU1
Optical Shelves 1 & 2
Lower DCBA
Lower DCBA
BFU2
Optical Shelves 3 & 4
Upper * DCBA
Middle DCBA
BFU3
Lower DCBA
NA
Upper DCBA
BFU4
Upper DCBA
NA
NA
DCBA = Dual Channel Bank Assembly
* Not used in a 51-type cabinet, used for a DDM-1000 or DDM-2000
(if equipped) in other type cabinets.
