ESI VideoBridge 2150, Service Manual

Page: 16 / 332

HANDLE THE CRT WITH CARE. ROUGH HANDLING OR SCRATCHING CAN
CAUSE THE CRT TO IMPLODE. TO AVOID PERSONAL INJURY FROM
IMPLOSION WEAR PROTECTIVE GOGGLES AND CLOTHING WHEN WORKING
WITH THE CRT. ONLY WORK WITH THE CRT IF YOU ARE QUALIFIED TO
DO
SO.
D I S C ONNECT ALL POWER TO THE INSTRUMENT BEFORE REPLACING
COMPONENTS. FAILURE TO
DO
SO MAY RESULT IN ELECTRICAL SHOCK.
THE CR T IS . CAPABLE OF STORING A HIGH VOLTAGE CHARGE AFTER
P O W E R HAS BEEN REMOVED.
TO PREVENT PERSONAL INJURY FROM
ELECTRIC SHOCK, USE AN OSHA OR UL APPROVED SHORTING STRAP TO
DISCHARGE ALL HIGH VOLTAGE POINTS TO CHASSIS GROUND.
THIS
PROCEDURE MUST BE PERFORMED BY QUALIFIED PERSONNEL ONLY.
WARNING
TO AVOID ELECTRIC SHOCK FROM DANGEROUSLY HIGH VOLTAGES, USE
O N L Y I N SULATED PLASTIC TRIM T OOLS TO PERFORM THE VIDEO
ADJUSTMENTS DESCRIBED BELOW.
BECAUSE OF DIFFERING POWER REQUIREMENTS, INSTRUMENTS SHIPPED
OUTSIDE THE UNITED STATES MAY REQUIRE A DIFFERENT POWER CORD
CONNECTOR.
WHEN PLACING A NEW CONNECTOR ON THE POWER CORD,
CA R E MUST BE TAKEN TO ASSURE ALL THREE WIR E S (E,N,L) ARE
CONNECTED PROPERLY.
THE GREEN OR GREEN-WITH-YELLOW-STRIPE
WIRE IS ALWAYS CONNECTED TO EARTH GROUND (E). THE WHITE OR
LIGHT-BLUE WIRE IS CONNECTED TO THE NEUTRAL SIDE OF THE POWER
LINE (N).
THE BLACK OR BROWN WIRE IS CONNECTED TO THE HIGH
S I D E O F THE POWER LINE (L). FIGURE 2-6 ILLUSTRATES THE
A V A I L ABLE POWER CORD CONFIGURATIONS ACCORDING TO COUNTRY
WHICH MAY BE USED IN VARIOUS COUNTRIES INCLUDING THE STANDARD
POWER CORD FURNISHED WITH THE INSTRUMENT.
WHEN PERFORMING ANY CALIBRATION OR MAINTENANCE OPERATION, DO
NOT REMOVE OR REPLACE CIRCUIT CARDS WHILE THE POWER IS TURNED
ON.
FAILURE TO TURN POWER OFF MAY RESULT IN ELECTRIC SHOCK
OR DAMAGE TO THE INSTRUMENT.
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