HS50_advance_level 2.pdf - 第94页
07/2002 Editio n Student G uide HS -50 Advanc ed II 3 Power Sup ply 56 ➠ Detach the c able lug s (1) fr om the ter minal li nks one b y one a nd ide ntify the te rmin al wires with self-ad hesiv e lab els. ➠ Loosen the…
Student Guide HS-50 Advanced II 07/2002 Edition
3 Power Supply
55
DANGER Switch off the placement system and disconnect from the power
supply (see sections 3.3.1 and 3.3.2).
➠ Fix the perspex panel to the rectifier.
PLEASE NOTE:
Do not overtighten the M5 fillister head screws, otherwise the panel might break.
➠ Complete the servicing work as described in 3.3.3 on page 3 - 29.
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– Open-ended spanner or socket spanner, size 10
–Pliers
– Self-adhesive labels
– Heat transfer compound
– Digital multimeter
– HS-50 detailed circuit diagrams
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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).
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V2 Rectifier S61-B2U 28-02 00341244-01
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07/2002 Edition Student Guide HS-50 Advanced II
3 Power Supply
56
➠ Detach the cable lugs (1) from the terminal links one by one and identify the terminal wires with
self-adhesive labels.
➠ Loosen the M6 hexagon head screw (2) and remove the retaining ring (3).
➠ Remove the rectifier (4).
➠ Remove residue of heat transfer compound from the surfaces of the unit.
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➠ Apply heat transfer compound to the "metal side" of the rectifier.
➠ Fit the rectifier (4) and retaining ring (3).
➠ Fix the rectifier in place with the M6 hexagon head screw (2).
➠ Attach the cable lugs, ensuring that the polarity is correct.
➠ Switch the placement system on and start it up.
➠ Measure the voltages as per the table "Voltages at rectifiers V1 - V8" on page 3 - 16.
➠ Complete the servicing work as described in 3.3.3 on page 3 - 29.
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– Set of slotted-head screwdrivers
– Digital multimeter
– HS-50 detailed circuit diagrams
Student Guide HS-50 Advanced II 07/2002 Edition
3 Power Supply
57
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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).
➠ Use the screwdriver to push back the yellow (1) terminal link slightly.
➠ Pull the terminal wires out one by one and identify with adhesive labels.
➠ Use the screwdriver to press down the two locking lugs (2) on the back and remove ELR1 (3)
or ELR2 from the top-hat rail.
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➠ Place ERL1 and/or ERL2 on the top-hat rail and snap into place.
➠ Check that it is firmly seated.
➠ Connect the marked terminal wires. Ensure that they are firmly attached.
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ELR1, ELR2 (Fig. 5.8.2) Board ARL TC 31034-01 00341835-01