SX PARTS CATALOG

Power Supply Block
DIAGRAM 110

For price and ordering information or to place the item in your shopping cart,
select a Part Number in the table.

PARTS TABLE
(Select Text Version)

Item Number	Part Number	Description	Printer Compatibility Notes	Click on Picture to Identify
110-1	RG9-0205-090	Power Supply Block (100/115V)	SX, TX, 8II, HP II (115V)
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)
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)
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)
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.