Tektronix HDVG1, Руководство по обслуживанию

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Maintenance
HDVG1 HDTV Digital Video Generator Service Manual
5- 3
Inspection and Cleaning
Preventive maintenance consists of cleaning, visual inspection, performance
checking, and, if needed, readjustment. The preventive maintenance schedule
established for the instrument should be based on the environment in which it is
operated and the amount of use. Under average conditions, scheduled preventive
maintenance should be performed every 2000 hours of operation.
Protect the module from adverse weather conditions. The module is not
waterproof.
CAUTION.
To avoid damage to this module, do not expose it to sprays, liquids, or
solvents. Do not flex the circuit board if you remove the board from its mounting
shield. The circuit board can be damaged by flexing. The shield provides
necessary structural support to the circuit board.
Clean the mainframe and modules often enough to prevent dust or dirt from
accumulating. Refer to Cleaning and Visual Inspection in the TG2000 Signal
Generation Platform Service Manual
.
Check module performance after each 2000 hours of operation or every
12 months. This will help to ensure maximum performance and assist in locating
defects that may not be apparent during regular operation. Performance
verification procedures are included in this manual.
Repackaging Instructions
Use the following instructions to prepare your instrument for shipment to a
Tektronix, Inc., Service Center:
1. Attach a tag to the instrument showing: the owner, complete address and
phone number of someone at your firm who can be contacted, the instrument
serial number, and a description of the required service.
2. Package the instrument in the original packaging materials. Figures 5--1 and
5--2 illustrate how to repackage the module in the original packaging
materials. If the original packaging materials are not available, follow these
directions:
a. Obtain a carton of corrugated cardboard having inside dimensions six or
more inches greater than the dimensions of the instrument. Use a
shipping carton that has a test strength of at least 250 pounds (113.5 kg).
b. Surround the module with a protective (anti-static) bag.
General Care
Cleaning and Visual
Inspection
Performance Verification