Cisco Systems uBR-MC28X, uBR-MC28U Removing the Card, Troubleshooting, Technical Specifications

Step 3 Connect the US cables to the US ports on the card (US0–US7). All US ports are light blue.

Figure 3 Inserting an Attenuator

								uBR - MC28X	DS0-	DS1-
US0	US1	US2	US3	US4	US5	US6	US7
									IF	IF	88993
									+42 dBmV	ENABLED

Connector

Upconverter

Attenuator

Cable

5Removing the Card

To prevent the alarms from activating, administratively shut down the card using the shutdown command in interface configuration mode before removing it from the chassis.

Step 1 Make sure that you are properly grounded.

Step 2 Disconnect all the cables from the cable interface line card.

Step 3 Unscrew the captive installation screws on the faceplate.

Figure 4 Removing the Card from the Chassis

88982

uBR - MC28U

DS0-

DS1-

US

0

US

1

US

2

US

3

U

S5

U

S6

U

S7

RF

RF

Step 4 Grasp the handle and carefully pull the card out of its slot (see Figure 4).

Caution Always handle the card by the carrier edges and handle; never touch the cable interface line card’s components or connector pins. For proper cooling and airflow, always install a line card cover in an empty line card slot.

Step 5 Place the card on an antistatic surface with its components facing upward.

Note If the card is being returned to the factory, immediately place it in a static shielding bag and proper packaging for protection.

6Troubleshooting

1.Make sure that the card is securely seated in the chassis.

If the captive screws do not tighten all the way, the card is not properly seated in the chassis or backplane. Carefully pull the card halfway out of the slot, reinsert it, and tighten the captive installation screws.

Caution A partially seated line card can cause the router to reboot.

2.Are all enabled LEDs on? If yes, the system is operational.

If no, check the following possibilities:

a.If the card has been enabled and configured for operations, the enabled LED remains on.

b.If a port is enabled but its enabled LED is still off, check if the card has pulled away from the router. Reseat the card in its slot. (Do not have to turn off the system power to do this.} After the system reinitializes the interfaces, the enabled LED on the card should come on.

3.If the enabled LED remains off after the above checks, it is likely that the system has detected a processor hardware failure. Go to the Cisco TAC website http://www.cisco.com/tac for further information and help.

Figure 5 LEDs

								Enabled
								LED
							uBR - MC28U	D	D
US0	US1	US2	US3	US4	US5	US6	US7	S0	S1
								-R	-R
								F	F
									ENABLED

	Upstream		Downstream	88985
	LEDs		LEDs
	US0-US7		DS0-DS1
Table 1	LEDs/Status
LED/Status		Description
ENABLED—green		Card operating normally
ENABLED—off		Card not enabled
US—green		Upstream enabled
US—off		Upstream not enabled
DS—green		Downstream enabled
DS—off		Downstream not enabled

7Technical Specifications

Table 2	Technical Specifications
Description		Order Num/ Specifications
Cisco uBR-MC28U,		UBR-MC28U,
with upconverter		UBR-MC28U=
Cisco uBR-MC28X,		UBR-MC28X,
without upconverter		UBR-MC28X=
Cisco uBR-E-28U,		UBR-E-28U
with upconverter		UBR-E-28U=
Blank covers		UBR-MC-COVER=
Weight—MC28U/E-		6 lbs (2.72 kg)
28U		4.75 lbs (2.15 kg)
Weight—MC28X
Power consumption
MC28U/E-28U		80 Watts (273 BTU/h)
MC28X		50 Watts (170.6 BTU/h)

Table 2 Technical Specifications (continued)

Description	Order Num/ Specifications
Output—MC28U/E-	+50 to 61 dBmV at RF
28U
Output—MC28X	+42 dBmV at IF (+/-2 dB)
Modulation
Upstream (US0–US7)	QPSK 8–, 16–, 32–,
	64–QAM
Downstream	64–QAM, 256–QAM
(DS0–DS1)
RF output power range—50 to 61 dBmV
Frequency range
Upstream	5–65 MHz
Downstream	70–860 MHz

The Cisco uBR-MC28U/X/E-28U line card is compatible with most cable systems worldwide, including but not limited to—Asia Pacific, Europe, and the Americas. See Cisco IOS release notes for more information.

8Related Documentation

For more information, refer to the following at Cisco.com:

•Cisco uBR7200 Universal Broadband Series Hardware Installation Guide

•Cisco uBR7200 Series Cable Interface Line Card Hardware Installation Guide

•Cisco uBR7200 Series Universal Broadband Routers

•For the 1–year warranty information, visit the following URL:

http://www.cisco.com/en/US/products/prod_w arranties_listing.html