- Related Topics
- Outstanding Issues with the MX480 Router
Errata with the MX480 Router Documentation
This topic lists outstanding documentation issues:
- The shut-down voltage and start-up voltages as stated
in the following note in the MX480 hardware guides and MX480 Quick
Start are not correct under all circumstances: [PR/273771]
Note: If the input voltage from the DC power source drops below –36.5 to –38.5 VDC, the routing platform automatically shuts down. During automatic shutdown, the circuit remains active. When the input voltage returns to –40.0 to –41.0 VDC, the router automatically starts up again and the system returns to normal operation within 30 minutes. No operator intervention is required.
- When replacing a DC power cable, remove the power cable from the DC power source before attaching the ESD strap to the chassis and switching the circuit breaker on the power supply faceplate to the off position. Disregard the duplicate Step 7 to remove the power cable from the DC power source again after removing the clear plastic cover protecting the terminal studs on the power supply faceplate. [PR/228198 PR/266556]
- Table 1 lists the
AC power cords for 125 VAC. [PR/263145]
Table 1: AC Power Cord Specifications (125 VAC)
Country
Model Number
Electrical Specification
Plug Type
Japan
CBL-PWR-RA-JP15
125 VAC, 50 or 60 Hz AC
JIS 8303
North America
CBL-PWR-RA-US15
125 VAC, 60 Hz AC
NEMA 5-15P
CBL-PWR-RA-TWLK-US15
125 VAC, 60 Hz AC
NEMA L5-15P
- Table 2 lists
corrections to plug type of the AC power cords for Australia. China,
and the United Kingdom. Also, the NEMA 6-20 plug type has been added.
Table 2: AC Power Cord Specifications
Country
Model Number
Electrical Specification
Plug Type
Australia
CBL-M-PWR-RA-AU
240 VAC, 50 Hz AC
SAA/3/15
China
CBL-M-PWR-RA-CH
220 VAC, 50 Hz AC
CH2-16P
North America
CBL-M-PWR-RA-US
250 VAC, 60 Hz AC
NEMA 6-20
United Kingdom
CBL-M-PWR-RA-UK
240 VAC, 50 Hz AC
BS89/13
- For the cooling system to function properly, the airflow around the chassis must be unrestricted. Allow at least 6 in. (15.2 cm) of clearance between side-cooled routers. Allow 2.8 in. (7 cm) between the side of the chassis and any non-heat-producing surface such as a wall. [PR/258887]
- When installing the router without a mechanical lift, remove and reinstall components from the chassis, first from the rear and then from the front. Components should be removed and reinstalled in the following order: power supplies, fan tray, SCBs, and DPCs.[PR/265034]
- Replace the air filter, located at the left rear of the router, every 6 months for optimum cooling system performance.
- Two threaded inserts (PEM nuts) are provided on the upper rear of the chassis for connecting the router to earth ground. The grounding points fit UNC 1/4–20 screws (American).
- The mounting shelf should be installed on the back of the rail as described in the MX480 Ethernet Services Router Hardware Guide.
- After installing a DC power cable or AC power cord, route the power cable or power cord along the cable restraint towards the left or right corner of the chassis. If needed, thread plastic cable ties, which you must provide, through the openings on the cable restraint to hold the power cord or cables in place.
- Table 3 describes
the functions of the host subsystem OFFLINE LED.
Table 3: Host Subsystem OFFLINE LED
Label
Color
State
Description
OFFLINE
Red
On steadily
Host is installed but the Routing Engine is offline.
Off
Host is not installed.
