SYSTEM RACK

4.3.3VERIFY RESISTANCE OF BUS BAR AND POWER SUPPLY LINES

1.Verify the Power Cables are not connected to a power source.

2.Verify the Power Supplies are not installed in the Power Supply shelf.

3.Measure the resistance from point-to-point and verify the resistance as shown in Table 4-12.

4.3.4VERIFY COOLING FAN AIR FLOW DIREC- TION

1.Connect the power cables to a 110V AC source.

2.Connect the Plus lead of the Fan Cable to Bus Bar D1-16.

3.Verify both power supplies are turned OFF. (Power Supply "A", is located on the left side at the bottom of the rack. Power Supply "B" is located on the right side at the bottom of the rack.)

4.Install both power supplies.

5.Turn Power Supply "A" on.

6.Verify that the Power On indicator is "ON" for Power Supply "A".

7.Verify that the air flow from the fan is to the outside.

4.3.5VERIFY VOLTAGES ON POWER DISTRI- BUTION CABLE

1.Verify voltages in Table 4-13for the Power Termi- nation Cables for Shelves 1-6.

2.Turn Power Supply "A" OFF.

Table 4-13 POWER DISTRIBUTION CABLE

VOLTAGES

Pin

Color

 

 

 

 

1

Green

-48V ±2V

2

Not Used

None

3

Black

Common

4

White

-12V ±1V

5

Not Used

None

6

Black

Common

7

Red

+5V +0.5/-0.1V

8

Not Used

+12V ±1V

9

Black

Common

10

Red

+5V +0.5/-0.1V

11

Blue

+12V ±1V

12

Black

Common

13

Red

+5V +0.5/-0.1V

14

Blue

+12V ±1V

15

Black

Common

 

 

 

4.3.6 SYSTEM TEST PROCEDURE

The following test procedure is for the Switch with six Power Termination Modules (PTMs), one Network Interface Module (NetNIM) and one Voice Termination Module (VTM).

1.Install all Power Termination Cables onto the back- plane at mating connector P33.

2.Unplug all modules from the backplane card slots (leave unplugged modules in the card guides).

3.Verify the installation of the PCM W1 and W3 cables as shown in Table 4-14(see Figure 4-5).

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