T640 Standard Control Boards Description; T640 Standard Control Boards Leds; Figure 23: T640 Standard Control Board; Table 14: Standard Control Board Leds - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
Related
Documentation
44
T640 Routing Engine Description on page 33
T640 Standard Control Boards Description on page 44
T640 T Series Control Boards (T-CBs) Description on page 45
T640 LCC-CB Description on page 46

T640 Standard Control Boards Description

Figure 23 on page 44 shows the standard control board.

Figure 23: T640 Standard Control Board

T640 Hardware Component Overview on page 11
T640 Host Subsystem Description on page 32
T640 Routing Engine Description on page 33
T640 Standard Control Boards LEDs on page 44

T640 Standard Control Boards LEDs

Three LEDs, located on the standard control board faceplate, indicate the status of the
control board.. Table 14 on page 44
LEDs.

Table 14: Standard Control Board LEDs

Label Color
Blue
MASTER
Yellow
FAIL
Green
OK
describes the functions of the standard control board
State Description
On steadily Control board is functioning as the master.
On steadily Control board has failed.
On steadily Control board is online and is functioning normally.
Blinking Control board is powering up, but not online.
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