HS50_advance_level 2 - 第90页
07/2002 Editio n Student G uide HS -50 Advanc ed II 3 Power Sup ply 52 )L WWLQ JWKH WUD QVIR UPH U7 ➠ Check tha t there are four rubber washer s and fou r plain washers on the sc rew bolts on the bot- tom…
Student Guide HS-50 Advanced II 07/2002 Edition
3 Power Supply
51
➠ Loosen the M8 hexagon nuts (item 3 in the Fig. 3.3 - 20 and 3.3 - 21).
➠ Remove the four plain washers (4) and four rubber washers (5) (see Figs. 3.3 - 20 and 3.3 -
21).
➠ Lift the transformer out of the unit.
WARNING The transformer is very heavy so it should either be lifted by two
people or by one person using a tripod with block and tackle.
07/2002 Edition Student Guide HS-50 Advanced II
3 Power Supply
52
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➠ Check that there are four rubber washers and four plain washers on the screw bolts on the bot-
tom of the unit.
➠ Place the transformer in the power supply unit.
➠ Place the four rubber washers (5) on the screw bolts.
PLEASE NOTE:
These rubber washers are important because they absorb noise and vibration.
➠ Attach the four plain washers (4).
➠ Use the four M8 hexagon nuts to fix the transformer T1 in place.
➠ Connect the terminal wires to the primary and secondary terminals.
➠ Switch the placement system on and use the digital voltmeter to measure the voltages on the
primary and secondary sides of the transformer (see Fig. 3.2 - 4
and 3.2 - 5 on page 3 - 18.
DANGER Switch off the placement system and disconnect from the power
supply (see sections 3.3.1 and 3.3.2).
➠ Push the power supply unit so that it is half-way in the placement system.
Student Guide HS-50 Advanced II 07/2002 Edition
3 Power Supply
53
CAUTION
Ensure that the cables do not become trapped, otherwise the insulation will be damaged.
➠ Fix the fixing bar in place.
➠ Complete the servicing work as described in 3.3.3 on page 3 - 29.
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– Set of slotted-head screwdrivers
– Open-ended spanner or socket spanner, size 8
– Self-adhesive labels
– Heat transfer compound
– Digital multimeter
– HS-50 detailed circuit diagrams
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V1, V7 rectifier S101-B6U-160-08, item number 00341246-01
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DANGER Switch off the placement system and disconnect from the power
supply (see sections 3.3.1 and 3.3.2).