After you install the replacement craft interface, immediately reinstall the upper front
fan tray. See
“Replacing a T4000 Upper Front Fan Tray” on page 238
.
Figure 103: Installing a Replacement Craft Interface
FANTRAY-T4000
g006273
T Series
FAIL
OK
FPC0
FAIL
OK
FPC1
ACO/LT
FAIL
OK
FPC2
FAIL
OK
FPC3
FAIL
OK
FPC4
FAIL
OK
FPC5
FAIL
OK
FPC6
FAIL
OK
FPC7
MENU
ENTER
FAIL
FAIL
SIB0
SIB1
SIB2
SIB3
SIB4
FAIL
MASTER
HOST0
HOST1
MASTER
OK
OK
OK
Related
Documentation
T4000 Craft Interface Description on page 23
•
•
Troubleshooting the T4000 Craft Interface on page 196
Replacing a T4000 Lower Front Fan Tray
The lower front fan tray is located below the front air filter. Each front fan tray weighs
about 20.4 lb (9.3 kg). The fan trays are hot-insertable and hot-removable. The upper
and lower fan trays are interchangeable with each other.
NOTE:
Ensure that at any given time only one front fan tray is replaced. Do
NOT replace both the front lower and upper fans simultaneously.
1.
Removing the T4000 Lower Front Fan Tray on page 236
2.
Installing the T4000 Lower Front Fan Tray on page 237
Removing the T4000 Lower Front Fan Tray
1.
Attach an electrostatic discharge (ESD) grounding strap to your wrist, and connect
the strap to one of the ESD points on the chassis.
2.
Unwrap any PIC cables from the spools on the front cable management system and
remove the cables from the tray. Arrange the cables so that they do not block the
front cable management system and tray, and secure them with temporary fasteners
so that they are not supporting their own weight as they hang from the connector.
CAUTION:
Do not let fiber-optic cable hang free from the connector. Do
not allow fastened loops of cable to dangle, which stresses the cable at
the fastening point.
Copyright © 2013, Juniper Networks, Inc.
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