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Section 5
Factory Service
This section contains information regarding obtaining
factory service for the 840-C HandHeld Optical Power
Meter. The user should not attempt any maintenance or
service of this instrument and/or accessories beyond the
procedures given in Section 4: Maintenance and Trouble-
shooting. Any problems which cannot be resolved using
the guidelines listed in Section 4 should be referred to
Newport Corporation factory service personnel. Contact
Newport Corporation or your Newport representative for
assistance.
The Model 840-C electronic display contains no user
serviceable parts. It is delivered in a permanently sealed
condition. Its calibration accuracy is warranted for a
period of two years. After two years, the unit should be
returned to Newport Corporation for recalibration.
Calibration data for an individual detector is stored in the
Detector Cal Module that accompanies each detector. The
Model 840-C may be used with other Newport detector/
attenuator combinations than the one supplied with the
unit so long as an Detector Cal Module is calibrated for
that detector.
To obtain information concerning factory service, contact
Newport Corporation or your Newport representative.
Please have the following information available:
1. Instrument model number
2. Instrument serial number (Inside battery
compartment.)
3. Description of the problem.
If the instrument is to be returned to Newport Corpora-
tion, you will be given a Return Number, which you
should reference in your shipping documents.
Please fill out the service form, located on page 33, and
have the information ready when contacting Newport
Corporation. Return the completed service form with the
instrument.
Introduction
5.1
Obtaining
Service
5.2
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