HP 8168E User Manual page 232

To assess the projection of the emitted light beam you can use an infrared sensor card. Hold the
card approximately 5 cm from the output of the connector. The invisible emitted light is projected
onto the card and becomes visible as a small circular spot.
1. Clean the connector by rubbing a new, dry cotton-swab over the surface
Preferred
using a small circular movement.
Procedure
2. Blow away any remaining lint with compressed air.
Procedure for Use this procedure particularly when there is greasy dirt on the connector:
Stubborn Dirt
1. Moisten a new cotton-swab with isopropyl alcohol.
2. Clean the connector by rubbing the cotton-swab over the surface using a
small circular movement.
3. Take a new, dry soft-tissue and remove the alcohol, dissolved sediment and
dust, by rubbing gently over the surface using a small circular movement.
4. Blow away any remaining lint with compressed air.
The better, more gentle, but more expensive cleaning procedure is to use an
An Alternative
ultrasonic bath with isopropyl alcohol.
Procedure
1. Hold the tip of the connector in the bath for at least three minutes.
2. Take a new, dry soft-tissue and remove the alcohol, dissolved sediment and
dust, by rubbing gently over the surface using a small circular movement.
3. Blow away any remaining lint with compressed air.
Cleaning Connector Adapters
Caution
Some adapters have an anti-re ection coating on the back to reduce back re ection. This coating
is extremely sensitive to solvents and mechanical abrasion. Extra care is needed when cleaning
these adapters.
1. Clean the adapter by rubbing a new, dry cotton-swab over the surface using
Preferred
a small circular movement.
Procedure
2. Blow away any remaining lint with compressed air.
Use this procedure particularly when there is greasy dirt on the adapter:
Procedure for
Stubborn Dirt
1. Moisten a new cotton-swab with isopropyl alcohol.
2. Clean the adapter by rubbing the cotton-swab over the surface using a small
circular movement.
3. Take a new, dry soft-tissue and remove the alcohol, dissolved sediment and
dust, by rubbing gently over the surface using a small circular movement.
4. Blow away any remaining lint with compressed air.
E-6 Cleaning Procedures