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Power Supply Block
DIAGRAM 110


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[Power Supply Block, 110]



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PARTS TABLE
(Select Text Version)
Item
Number
Part NumberDescriptionPrinter Compatibility NotesClick on Picture to Identify
110-1 RG9-0205-090 Power Supply Block (100/115V) SX, TX, 8II, HP II (115V)[0205]
110-1 RG9-0206-060 Power Supply Block (220/240V) SX, TX, 8II, HP II (220V)
110-1 RG9-0319-060 Power Supply Block (100/115V) 8IIR, 8IIT, HP IID, HP III, HP IIID (115V)[0319]
110-1 RG9-0325-060 Power Supply Block (220/240V) 8IIR, 8IIT, HP IID, HP III, HP IIID (220V)
110-1 RG9-0623-020 Power Supply Block (100/115V) 8IIR, 8IIT (115V)
110-1 RG9-0656-040 Power Supply Block (100/115V) Mark III, IIIR, IIIT (115V)[0656]
110-1 RG9-0657-000 Power Supply Block (220/240V) MarkIII, IIIR, IIIT (220V)
110-1 RG9-0749-000 Power Supply Block (100/115V) HP IID, HP III, HP IIID (115V)[0749]
110-1 RG9-0750-000 Power Supply Block (220/240V) HP IID, HP III, HP IIID (220V)
110-2 RA1-4084-000 Mount, Power Cord ALL
110-3 RA1-4085-000 Cover, PCB, Lower ALL
110-4 RA1-4088-000 Cover, PCB, Upper ALL
110-5 RA1-4092-000 Plate, Shield ALL
110-6 RH7-1047-030 Fan, DC 24V (2.4 Watt) SX, TX, 8II
110-6 RH7-1074-030 Fan, DC 24V (3.4 Watt) ALL
110-6 RH7-1122-000 Fan, DC 24V (3.4 Watt), Radial Fan Blade Version ALL
110-7 WT2-0365-000 Clip ALL
110-8 XB1-2400-603 Screw, Binding, M3X6 (E54) ALL
110-9 FA9-1449000 Screw, Truss Head, w/Washer, M3X6 ALL
110-10 XB1-2500-803 Screw, Binding, M5X8 ALL
110-11 XB1-2300-609 Screw, Binding, M3X6 (E21) ALL
110-12 XB4-7300-809 Screw, Pan Head, Self Tapping (G17) ALL
110-13 XD9-0033-000 Washer, Outertooth (V91) ALL
110-14 XD1-4200-402 Washer, Outertooth (V92) ALL
110-15 XD1-4200-502 Washer, Outertooth (V93) ALL

Power Supply Block

The Power Supply Block comes in 110V and 220V versions. It has been revised several times. Please refer to the above table to find the original version for a particular model.

Electrically, the older versions are -0205 and -0206. Versions -0656 and -0657 have gray plastic instead of black for the power switch and power cord inlet, but the difference is only cosmetic. If you are not concerned about color, all versions are interchangeable, but need to be matched to the 24 volt fan that sits atop it. If you are unsure which Power Supply Block you have, we have a page that shows how to spot the differences.

Fans

There are three part numbers for the 24 volt fan: RH7-1047-030, RH7-1074-030, and RH7-1122-000. The RH7-1047-030 is the original version and must be employed with Power Supply Block part number RG9-0205-000. This fan uses 2.4 watts. DO NOT use the older Power Supply Block (RG9-0205) with the newer fans (RH7-1074 or RH7-1122) or the newer Power Supply Blocks (RG9-0319, RG9-0656, or RG9-0749) with the older fan (RH7-1047)!

The newer fans (RH7-1074 and RH7-1122) use slightly more power (about 3 watts) and move more air to improve cooling for printers that have large internal printer controllers. They run at a low speed all the time, and kick into high gear when printing. The squirrelcage-type fan RH7-1074 also has an improved bushing for greater efficiency and longer life, but has been largely supplanted by the revised, box-type fan, RH7-1122.

Worn out fans are often blamed for Fixing Assembly failures, since they don't provide enough air circulation to keep the gear drives cool. Excessive heat around the Fixing Assembly causes the plastic parts to weaken and wear out faster than normal.


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