4-4
Power-up procedure
411-2051-500
Draft
00.01
November 1999
3
Disconnect the power cables from the ACU,
RMC, HSMO, DCSM, DRUM, ICRM, and TRU
shelves.
Caution:
Arrange these cables so there is
no chance of them shorting out on anything.
4
Measure the resistance to ground on the
following power plug pins:
CE Frame
Pin 4
ACU
Pin 5
ACU and RMC
Pin 6
ACU, RMC, DCSM, HSMO and
DRUM
TB1-5
ICRM
TB1-7
ICRM
RF Frame
Pin 3
TRU shelves
Pins 2,3 MCPA modules
Less than 0.5 Ohms
5
Turn ON the mains breakers assigned to the
cell site equipment and the RIP breakers.
6
Measure and record the Voltage and Polarity of
the power terminals with respect to the DC
Return bar at the top of each frame.(CE and
RF)
+26.5 to 29 Vdc
7
Turn ON the breakers on the breaker RIP panel
8
Measure the voltage on the following power
plug pins:
CE Frame
Pin 1
ACU (+Bias)
Pin 2
ACU, HSMO, RMC, DCSM, and
DRUM (B Power),
TB1-1
ICRM (B Power)
Pin 3
ACU, HSMO, RMC, DCSM, and
DRUM (A Power)
TB1-3
ICRM (A Power)
RF Frame
Pin 2
Transceiver shelves
Pins 1,4 MCPA modules
+26.5 to 29 Vdc
9
Turn OFF the breakers on the RIP panel and to
the cell site equipment.
10
If the checks pass then reconnect the cables to
all the units and plug the TRUs into their
shelves. Turn the power back ON.
Step
Action
Observation
Summary of Contents for DualMode 800
Page 2: ......
Page 4: ......
Page 6: ...vi Publication history Nortel Networks Confidential 411 2051 500 Draft 00 01 November 1999...
Page 82: ...2 20 Periodic maintenance 411 2051 500 Draft 00 01 November 1999...
Page 90: ...3 8 Test equipment and precautions 411 2051 500 Draft 00 01 November 1999...
Page 100: ...5 6 Master Oscillator tests 411 2051 500 Draft 00 01 November 1999...
Page 106: ...6 6 Antenna and transmission line tests 411 2051 500 Draft 00 01 November 1999...
Page 116: ...8 4 Alarm Control Unit ACU tests 411 2051 500 Draft 00 01 November 1999...
Page 138: ...10 2 ICRM tests 411 2051 500 Draft 00 01 November 1999...
Page 200: ...12 10 Enclosure maintenance 411 2051 500 Draft 00 01 November 1999...
Page 208: ...A 8 Appendix A Frequency table 411 2051 500 Draft 00 01 November 1999...
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