4021, 7421 Parts catalog Legend The following column headings are used in the parts catalog: • Asm‑index—Identifies the item in the illustration • P/N—Identifies the part number of a FRU • Units/mach—Refers to the number of units in a printer •...
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4021, 7421 Assembly 1: Staple finisher—Frame Parts catalog...
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4021, 7421 Assembly 16: Horizontal paper transport—Covers 1 Parts catalog...
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4021, 7421 Assembly 16: Horizontal paper transport—Covers 1 Asm-index Units/opt Units/FRU Description Removal procedure 40X9314 HPT right top cover “HPT right top cover removal” on page 328 40X9462 HPT transport idler roller 40X9333 HPT transport idler holder 1 40X8996 HPT transport idler holder bracket 1 -- 40X9428 HPT transport idler holder 2 40X9206...
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4021, 7421 Assembly 17: Horizontal paper transport—Covers 2 Parts catalog...
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4021, 7421 Assembly 17: Horizontal paper transport—Covers 2 Asm-index Units/opt Units/FRU Description Removal procedure 40X9321 HPT rear cover “HPT rear cover removal” on page 329 40X9322 HPT door locks “HPT door locks removal” on page 325 40X9313 Sensor (HPT door) “Sensor (HPT door) removal”...
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4021, 7421 Assembly 18: Horizontal paper transport—Drive section Parts catalog...
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4021, 7421 Assembly 18: Horizontal paper transport—Drive section Asm-index Units/opt Units/FRU Description Removal procedure 40X9920 HPT transport motor “Motor (HPT transport) removal” on cable page 331 40X9323 Motor (HPT transport) “Motor (HPT transport) removal” on page 331 40X9841 HPT transport roller belt “HPT belts and gears removal”...
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4021, 7421 Assembly 19: SHPF—Covers Parts catalog...
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4021, 7421 Assembly 19: SHPF—Covers Asm-index Units/opt Units/FRU Description Removal procedure 40X9510 SHPF top door “SHPF top door removal” on page 343 40X9513 SHPF top inner cover “SHPF top inner cover removal” on page 340 40X8876 SHPF front door sensor actuator 40X9512 SHPF front door...
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4021, 7421 Assembly 20: SHPF—Frame Parts catalog...
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4021, 7421 Assembly 20: SHPF—Frame Asm-index Units/opt Units/FRU Description Removal procedure 40X9540 Sensor (SHPF top bin full, “Sensor (SHPF top bin full) removal” transmit) on page 368 40X9518 SHPF top bin holder “SHPF top bin removal” on page 438 40X9538 Sensor (SHPF top bin full, “Sensor (SHPF top bin full, receive) receive)
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4021, 7421 Assembly 24: SHPF—Transport section 4 Asm-index Units/opt Units/FRU Description Removal procedure 40X9353 SHPF diverter feed “SHPF top jam access door and SHPF idler roller diverter removal” on page 399 40X8968 Sensor (SHPF “Sensor (SHPF entrance) removal” on entrance) page 451 40X9593 SHPF entrance idler...
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4021, 7421 Assembly 25: SHPF—Elevator bin section 1 Parts catalog...
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4021, 7421 Assembly 25: SHPF—Elevator bin section 1 Asm-index Units/opt Units/FRU Description Removal procedure 40X8954 SHPF elevator bin stack “SHPF elevator bin stack height height sensor actuator arm sensor actuator arms and gears removal” on page 355 40X9521 Booklet maker rail 40X8881 Booklet maker mount 40X8869...
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4021, 7421 Asm-index Units/opt Units/FRU Description Removal procedure 40X9488 SHPF lower left cover “Lower left cover removals” on page 348 40X9877 SHPF elevator bin full “Sensor (SHPF elevator bin full) sensor cable removal” on page 347 Parts catalog...
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4021, 7421 Assembly 26: SHPF—Elevator bin section 2 Parts catalog...
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4021, 7421 Assembly 26: SHPF—Elevator bin section 2 Asm-index Units/opt Units/FRU Description Removal procedure 40X9440 Ball bearing 40X9603 SHPF elevator belt “SHPF elevator belts removals” on page 382 40X9607 SHPF elevator gear 40X9311 SHPF elevator gear bracket 40X9427 SHPF elevator belt spring “SHPF elevator belts removals”...
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4021, 7421 Assembly 27: SHPF—Staple unit assembly Parts catalog...
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4021, 7421 Assembly 27: SHPF—Staple unit assembly Asm-index Units/opt Units/FRU Description Removal procedure 40X9520 SHPF staple unit carriage “SHPF staple unit drive belt and drive gear gear removal” on page 374 40X9611 SHPF staple unit carriage belt 40X9610 SHPF staple unit “SHPF staple unit removal”...