Figure 13: Jcs 1200 Power Module Leds; Table 13: Jcs 1200 Power Module Leds - Juniper JCS 1200 Hardware Manual

Each pair of power modules operates as a redundant pair. If either power module
fails, the remaining power module continues to supply power, but there is no
redundancy; the failed power module must be replaced as soon as possible.
Related Topics
JCS 1200 Power Module LEDs
Figure 13 on page 23 shows the LEDs on each power module.

Figure 13: JCS 1200 Power Module LEDs

The LEDs on each power module indicate the condition of the power module and
fan pack.
NOTE: The orientation of the power module that is shown in Figure 13 on page 23
is for one of the top power modules. Modules in the bottom power module bays are
rotated 180°.
Table 13 on page 23 describes the functions of the LEDs on the power modules.

Table 13: JCS 1200 Power Module LEDs

Name Color
Input power Green
Power module error Amber
Fan error Amber
JCS 1200 Power Module LEDs on page 23
Replacing a JCS 1200 Power Module on page 138
Replacing a JCS 1200 Power Box on page 134
Troubleshooting JCS 1200 Power Problems on page 89
Locating the JCS 1200 Power Module Serial Number on page 202
State Description
On steadily The input from the external power source connected to the power
module is present and within specifications. During typical
operation, both the input power and output power LEDs are lit.
On steadily A power module failure has occurred, and the power module is
not operating within specifications.
On steadily A fan pack has failed and is not operating within specifications.
Chapter 2: Hardware Component Overview
JCS 1200 Power Module LEDs
23