3-2
Cisco ONS 15327 Troubleshooting Guide, R3.4
April 2003

Chapter3 Replace Hardware

Replace the Fan-Tray Assembly

Figure3-1 Removing the Fan-Tray Assembly

Step 5 Slide the new fan-tray assembly into the shelf until the electrical plug at the rear of the tray plugs into

the corresponding receptacle on the back panel (Figure 3-2).

Caution Do not force the fan-tray assembly into place while installing it. Forcing the f an-tray assembly

into place can damage the connectors on the fan tray and/or the connectors on the shelf assembly.

Figure3-2 Replacing the Fan-Tray Assembly

Step 6 Secure the fan-tray assembly into the slot using the attached fastening screw.

Step 7 Confirm that the FAN STATUS LED on the front of the fan-tray assembly is illuminated. This indicates

that the fan is operating.
1234
E10/100-T
FAIL
ACT
SF
1234
E10/100-T
FAIL
ACT
SF
OC12/STM-4
IR 1310
FAIL
ACT
SF
OC48/STM-16
IR 1310
FAIL
ACT
SF
ACO
LAN CRAFT
XTC-28-3
LAMP
TEST
FAIL
ACT/STBY
SYNC
ACO
DS3 SF
DS1 SF
PWR A
PWR B
CRIT
MAJ
MIN
REM
ACO
LAN CRAFT
XTC-28-3
LAMP
TEST
FAIL
ACT/STBY
SYNC
ACO
DS3 SF
DS1 SF
PWR A
PWR B
CRIT
MAJ
MIN
REM
BITS
MIC B
ALARM DS1 (15-28)
-48VRET
PWR B
Rx 1 Rx 2 Rx 3
BITS
MIC A
ALARM DS1 (15-28)
-48VRET
PWR B
Tx 1 Tx 2 Tx 3
CISCO ONS 15327
OPTICAL NETWORKING SYSTEM
FAN
STATUS
71537
CISCO ONS 15327
OPTICAL NETWORKING SYSTEM
FAN
STATUS
1234
E10/100-T
FAIL
ACT
SF
1234
E10/100-T
FAIL
ACT
SF
OC12/STM-4
IR 1310
FAIL
ACT
SF
OC48/STM-16
IR 1310
FAIL
ACT
SF
ACO
LAN CRAFT
XTC-28-3
LAMP
TEST
FAIL
ACT/STBY
SYNC
ACO
DS3 SF
DS1 SF
PWR A
PWR B
CRIT
MAJ
MIN
REM
ACO
LAN CRAFT
XTC-28-3
LAMP
TEST
FAIL
ACT/STBY
SYNC
ACO
DS3 SF
DS1 SF
PWR A
PWR B
CRIT
MAJ
MIN
REM
BITS
MIC B
ALARM DS1 (15-28)
-48VRET
PWR B
Rx 1 Rx 2 Rx 3
BITS
MIC A
ALARM DS1 (15-28)
-48VRET
PWR B
Tx 1 Tx 2 Tx 3
CISCO ONS 15327
OPTICAL NETWORKING SYSTEM
FAN
STATUS
71535
CISCO ONS 15327
OPTICAL NETWORKING SYSTEM
FAN
STATUS