ViewSonic E55-2 Service Manual page 5

must not exceed 5.0 milliamp. In the case of a measurement exceeding the 5.0 milliamp value,
a rework is required to eliminate the chance of shock hazard.
Note: High voltage is present when this CRT display is operating. Always discharge the anode of the
picture tube to the display chassis
6. IMPLOSION PROTECTION
Picture tubes are equipped with an integral implosion protection system, but care should be taken to
avoid damage and scratching during installation.
7. X-RADIATION.
WARNING: The only potential source of X-Radiation is the picture tube. However when the high
voltage circuit is operating properly there is no possibility of X-Radiation problem, The basic
precaution which must be exercised is to keep the high voltage at the following factory-recommened
level.
Note: It is important to use an accurate periodically calibrated high voltage meter.
7-1 The procedure for adjusting high voltage is shown on page 49.
7-2 If high voltage cannot be set to 26KV, immediate service is required the possibility of premature
component failure.
7-3 To prevent X-Radiation possibility, it is essential to use specified picture tube.
ViewSonic Corporation
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IMPORTANT SAFETY NOTICE
There are special component used in this CRT displays
Which are important for safety. These parts are identified
By the international symbol
Diagram and on the replacement parts list. It is essential
that theses circuit parts should be replaced with
Manufacture's specified parts to prevent X-RADIATION,
Shock fire, or other hazards. Do not modify the original
design or this will void the original parts and labor
guarantee.
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E55-2