Replacing Cards And Modules; Safety And Workmanship - Eci Telecom NPT-1020 Installation And Maintenance Manual

NPT-1020 Installation and Maintenance Manual
Table 7-10: General troubleshooting procedures for daughterboards on SM_10E/EM_10E cards
No. Symptoms
1 Green ACT indicator
off after power-on or
reset
2 Red FAIL indicator on
after power-on or
reset
7.5

Replacing Cards and Modules

The following sections provide procedures for replacing cards and modules in the NPT-1020.

7.5.1 Safety and Workmanship

Refer to Before You Start
C
AUTION: Static Sensitive Devices
PROPER HANDLING AND GROUNDING PRECAUTIONS REQUIRED
NPT-1020 equipment contains components sensitive to ESD. To prevent ESD damage, strictly
observe all the precautions listed in
antistatic packaging material until you are ready to install them.
Use an antistatic wrist strap connected to a grounded equipment frame or rack when handling
cards and modules during installation, removal, or connection to internal connectors.
Before you start:
When inserting cards and modules, be sure to carefully align the card/module with the platform guide rails.
If you feel resistance during insertion, immediately retract the card/module and repeat the process.
Hold the card/module straight during insertion and removal, and pull or push it slowly and carefully to
avoid touching components located on adjacent cards/modules.
Do not use excessive torque when tightening the fastening screws of cards and modules.
Visually inspect the card and the mating backplane connectors and make sure that there are no signs of
physical damage. In particular, check for bent connector pins.
ECI Telecom Ltd. Proprietary
Probable cause
Defective indicator or
defective daughterboard
Defective Dslot on
SM_10E/EM_10E
BIT fail
for safety and workmanship instructions.
Corrective actions
Check whether the SM_10E/EM_10E card

is running, meaning that the ACT LED is
blinking. If yes, extract the daughterboard
and reinsert it again.
If the Green ACT indicator does not turn on

too, replace the daughterboard.
If replacing the daughterboard does not resolve
the problem, replace the SM_10E/EM_10E
card.
Replace the module.
Protection Against ESD. Keep parts and cards in their
Maintenance
7-14