
HP LaserJet M601 M602 M603 M604 M605 M606 Laser Scanner Assembly RM1-8373 RM1-8406
PRINTER REPLACEMENT PART
HP Laser Scanner Assembly
RM1-8373
A replacement laser imaging assembly for supported HP LaserJet Enterprise printers. Match your printer model and existing assembly before ordering.
Match the assembly before ordering
This listing identifies the part as RM1-8373. The model list below references the RM1-8406 service assembly family: RM1-8406-000CN for HP and RM1-8406-000 for Canon. Confirm the supplied RM1-8373 assembly is an approved replacement for your exact printer and existing part number. Model-family similarity alone does not establish interchangeability.
Precision laser imaging
The laser scanner is part of the printer’s internal imaging system. It directs the laser onto the photosensitive drum to create the image used during printing.
A targeted service replacement
Replace the laser scanner when service diagnosis identifies a failed assembly. Confirm the fault and inspect related connections before selecting a replacement.
Part details
| Product type | Internal laser scanner assembly / laser scanning unit (LSU) |
|---|---|
| Listing part number | RM1-8373 |
| HP service reference | RM1-8406-000CN — confirm interchangeability with the supplied assembly |
| Canon service reference | RM1-8406-000 — confirm interchangeability with the supplied assembly |
| Function | Laser exposure within the monochrome print engine |
Model compatibility reference
The following models use the RM1-8406 assembly family. Verify the RM1-8373 replacement supplied with this listing before purchase.
| Printer family | Models |
|---|---|
| HP LaserJet Enterprise 600 M601 | M601n, M601dn |
| HP LaserJet Enterprise 600 M602 | M602n, M602dn, M602x |
| HP LaserJet Enterprise 600 M603 | M603n, M603dn, M603xh |
| HP LaserJet Enterprise M604 | M604n, M604dn |
| HP LaserJet Enterprise M605 | M605n, M605dn, M605dh, M605x |
| HP LaserJet Enterprise M606 | M606dn, M606x |
| HP LaserJet Enterprise MFP M630 | M630dn, M630h, M630f |
| HP LaserJet Enterprise Flow MFP M630 | M630h, M630z |
| Canon imageCLASS | LBP351dn, LBP352dn |
| Canon regional LBP / i-SENSYS | LBP351x, LBP352x |
Installation and identification
This is the internal laser imaging assembly, not a flatbed document scanner or automatic document feeder. Follow the service manual for your exact printer. Installation by a qualified printer technician is recommended. After replacement, confirm the printer reaches its Ready state and print a configuration page.
RM1-8373 Laser Scanner Assembly
Check your exact model, existing assembly label, and approved service replacement before ordering. For Canon and additional HP models, confirm the RM1-8406 cross-reference with the supplied unit.
HP, LaserJet, Canon, imageCLASS, and i-SENSYS are trademarks of their respective owners. Model names are used for identification and compatibility reference.
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Usually ready in 5+ daysPairs well with
In stock! Ships within 5-7 business days.
100% Tested prior to shipment
Warranty Included (1 Year, 2 Year, and 3 Year Extensions available on all Printers)
Lifetime technical support

HP LaserJet M601 M602 M603 M604 M605 M606 Laser Scanner Assembly RM1-8373 RM1-8406
Please visit our FAQs page or email Sales@theprinterdepo.com with any questions you may have.
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FAQs
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- Shipping is free on all items below 65lbs
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