User's Manual Part 2

ManualsBrandsNokia Solutions and Networks ManualsElectronicsPart 22 CDMA Cellular Base Station

Initial Power–up Tests – continued

DRAFT

SCt4812T CDMA BTS Optimization/ATP

Mar 2001

2-14

Initial Power-up (RFDS)

The procedure in Table 2-6 must be performed on the RFDS after input

power from the common power supply has been verified. Perform the

following steps to apply initial power to the cards/modules within the

frame itself, verifying that each is operating within specification.

Visual inspection of card placement and equipage for each

frame vs. site documentation must be completed, as

covered in Table 2-1, on page 2-2, before proceeding with

this test.

IMPORTANT

Table 2-6: Initial Power-up (RFDS)

Step Action

1 On the RFDS, set the input power rocker switch (P1) to the ON position (see Figure 2-7).

2 Verify power supply output voltages (at the top of BTS frame), using a digital voltmeter, are within

specifications: +27.0 V nominal.

Initial Power-up (BTS)

The procedure must be performed on each frame after input power from

the common power supply has been verified. Follow the steps in

Table 2-7 to apply initial power to the cards/modules within the frame

itself, verifying that each is operating within specification.

Table 2-7: Initial Power–up (BTS)

Step Action

1 At the BTS, set the C–CCP (POWER) power distribution breakers (see Figure 2-3 on page 2-7 or

Figure 2-5 on page 2-9) to the ON position by pushing in the breakers.

2 Insert the C–CCP fan modules. Observe that the fan modules come on line.

! CAUTION

Verify the correct power/converter modules by observing the locking/retracting tabs appear as follows:

– (in +27 V BTS C–CCP shelf)

– (in –48 V BTS C–CCP shelf)

– (in –48 V BTS power conversion shelf)

Insert and lock the converter/power supplies into their associated slots one at a time.

• If no boards have been inserted, all three PWR/ALM LEDs would indicate RED to notify the user

that there is no load on the power supplies.

– If the LED is RED, do not be alarmed. After Step 4 is performed, the LEDs should turn GREEN;

if not, then a faulty converter/power supply module is indicated and should be replaced before

proceeding.

STPN 4045A

PWR CONV CDMA RCVR

STPN 4044A

PWR CONV LPA

STPN4009

PWR CONV CDMA RCVR

4 Seat and lock all remaining circuit cards and modules in the C–CCP shelf into their associated slots.

. . . continued on next page