Service Manual

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GSM-205-423

Powering up the cabinet

31st Oct 01

Installation & Configuration: Horizon

macro

indoor

68P02902W08-B

CONTROLLED INTRODUCTION

Inst. 4–7

Power up of cabinet without code load

To power up the cabinet:

1. Switch on the external power supply to the cabinet.

2. Turn each PSM switch to the OUTPUT ENABLE position; check that each

PSM has the active (green) LED on and the alarm (red) LED off.

3. Press the CBM circuit breaker button marked FANS. Check that each fan

module is operating correctly. Activate any fan not started by the restart

button (marked either FRONT or REAR) on the fan module.

4. Press the CBM circuit breaker button marked SURF, and if CCBs are

fitted, press the circuit breaker buttons marked CCB0 and CCB1.

5. Press the CBM circuit breaker button marked BPSM A and (if redundant

BPSM fitted) BPSM B. Check all associated digital module LEDs operate

correctly; green LEDs lit on BPSM, NIU and MCUF, and red LEDs off on

NIU and MCUF.

NOTE

Both red and green LEDs are initially lit on the NIU while

the unit conducts a self test. After approximately 20

seconds, the red LED will extinguish, indicating normal

condition.

6. Press the appropriate CBM circuit breaker buttons for the CTUs fitted, and

check that the RADIO STATUS LED for each CTU flashes green.

7. Close the door to ensure correct ventilation.

This completes the power up of the cabinet.

Power down of

cabinet

If the cabinet is not required to remain powered up, power down the cabinet as

follows:

1. Press all circuit breaker buttons to the out (off) position.

2. Switch each PSM to the OUTPUT DISABLE position.

3. Switch off the external power supply to the cabinet.

This completes the power down of the cabinet.

Power up

procedure with

code load

The following procedure should be carried out to power up the cabinet, with

code load. The code will be provided either direct from the BSC from E1 line or

from a PCMCIA card installed in the PCMCIA socket of the master MCUF.

Relevant components are shown in Figure 4-2.

CAUTION

This procedure should be carried out only by experienced

field engineers.