Xerox C245 / C255a / C303a / C305ae Color MFP: Complete Technical Guide
Xerox C245 / C255a / C303a / C305ae (XC2432 / ZC364): Complete Technical Guide
1. Overview
Compact color, real scanning, and a footprint that fits on a credenza -- that's the pitch for the Xerox C-series color multifunction family. The C245, C255a, C303a, and C305ae share a single engine platform (machine type 3501) with their OEM-branded siblings, the XC2432 and ZC364. These are small-workgroup machines: they land in branch offices, clinics, real-estate offices, and satellite locations that need color print, copy, scan, and fax without the cost, weight, or complexity of an A3 device.
Print and copy speeds range from the mid-20s up to 32 pages per minute in both black and color, with a recommended monthly volume of roughly 750 to 5,000 pages and a maximum duty cycle up to 75,000 pages per month. This is a light-to-moderate-duty platform -- treat it accordingly. Pushed hard month after month, the wear items (fuser, transfer belt, pick rollers) come due sooner than the page counters alone would suggest.
At Argecy we've supported printer hardware since 1982, and this Xerox color family is one we stock and service. This guide covers what a technician or an informed buyer actually needs: model differences, the part numbers that get ordered most, maintenance items, the real error codes from the service manual, and straight guidance on OEM vs. aftermarket and repair vs. replace.
2. Model Variants and Key Differences
All of these machines are color laser multifunction printers built on the same 3501 engine. The practical differences are speed, a few feature deltas, and branding. Internally they are largely interchangeable -- but always confirm the exact model before ordering model-specific parts (bezels, control panels, and fax cards differ).
| Model | Type | Speed (ppm, blk/clr) | Fax | Notes |
|---|---|---|---|---|
| Xerox C245 | Color MFP | up to 24 | No | Entry MFP of the family |
| Xerox C255a | Color MFP | up to 26 | Yes | Adds analog fax |
| Xerox C303a | Color MFP | up to 32 | Yes | Faster engine, fax standard |
| Xerox C305ae | Color MFP | up to 32 | Yes | Top of family; 4.3" color touchscreen, duplex ADF |
| Xerox XC2432 | Color MFP | up to 32 | Yes | OEM-branded sibling; shares controller & fax card with C305ae |
| Xerox ZC364 | Color MFP | up to 32 | Yes | OEM-branded sibling; shares controller & fax card with C305ae |
From a repair standpoint, the C305ae, XC2432, and ZC364 share the same controller board (961K18690), fax card (961K18700), and top cover -- they are functionally the same machine with different bezels. The C245/C255a/C303a use their own bezels and, in the case of the fax-equipped units, a fax card. Verify the model designation in the configuration menu before ordering any cover, bezel, control panel, or fax component.
3. Key Part Numbers for Frequently Replaced Components
These are the part numbers that come up most on this platform. Fuser voltage matters -- confirm 100V vs 110V vs 220V before ordering.
| Component | Xerox Part Number | Notes |
|---|---|---|
| Fuser, 100 V | 121K76830 | Confirm voltage; not interchangeable |
| Fuser, 110 V | 121K76820 | North America 110V |
| Fuser, 220 V | 121K76810 | 220V regions |
| Transfer module (belt) | 133N23276 | Image transfer belt assembly |
| Printhead (C305ae/XC2432/ZC364) | 046K02320 | Laser scanner unit (LSU) |
| Controller board (C305ae/XC2432/ZC364) | 961K18690 | Model-specific -- verify |
| Fax card (C305ae/XC2432/ZC364) | 961K18700 | MFP fax option |
| High voltage power supply (HVPS) | 105K44700 | |
| Low voltage power supply, 110/100 V | 105K44690 | |
| Low voltage power supply, 220 V | 105K44680 | |
| Waste toner bottle sensor | 130N01904 | |
| Sensor (input / fuser exit / buckle) | 130N01897 | Common multi-position sensor |
Supplies (customer-replaceable)
| Supply | Xerox Part Number | Yield |
|---|---|---|
| Black Standard Toner | 006R05116 | 3,000 |
| Cyan / Magenta / Yellow Standard Toner | 006R05117 / 006R05118 / 006R05119 | 2,500 ea. |
| Black High Yield Return Program Toner | 006R05091 | 6,200 |
| C / M / Y High Yield Return Program Toner | 006R05092 / 006R05093 / 006R05094 | 6,400 ea. |
| Waste Toner Container | 008R08165 | 15,000 |
4. Maintenance Items and Recommended Intervals
Unlike the big monochrome workgroup machines, this color platform does not use a single bundled maintenance kit. Maintenance is component-based. The items that wear and the order in which you'll typically replace them:
- Waste toner container (008R08165) -- roughly every 15,000 pages. The machine warns first (82.xx codes) and then stops. Keep a spare on the shelf for any machine in steady color use.
- Fuser (121K768xx) -- the largest single wear cost. Confirm voltage before ordering.
- Transfer belt module (133N23276) -- color transfer quality degrades with wear; watch for registration and density problems across all four colors at once.
- Pick and feed rollers -- Tray 1 and the manual/multipurpose feeder wear first. Misfeeds and doubles are the tell.
After replacing a supply or maintenance component, reset the relevant counter through the configuration menu so the machine stops reporting the condition and doesn't restrict printing.
5. Error Code Reference Table
These codes are taken directly from the C305ae / XC2432 / ZC364 service manual (machine type 3501). A leading 9xx/1xx code generally points to hardware; 2xx codes are media-path jams.
| Error Code | Description | First-Response Steps |
|---|---|---|
| 121.00 | Fuser did not reach the required temperature | Power cycle; check fuser connectors and thermistor; confirm correct-voltage fuser; replace fuser |
| 100.04 | Printhead temperature reading out of range | Reseat printhead cables; if persistent, replace printhead (046K02320) |
| 110.20 | Printhead error (mirror motor lock) | Reseat printhead; replace printhead if it recurs |
| 142.80 | Motor (CMY) error -- motor does not run | Check drive connectors and gear train; replace developer/drive motor |
| 151.80 | Motor (K / transfer belt) error | Inspect transfer module drive; check connectors; replace motor/transfer module |
| 82.xx | Waste toner bottle almost full / full | Replace waste toner container (008R08165); reset counter |
| 31.40 | Print cartridge smart chip fault | Reseat cartridge; clean contacts; replace cartridge if it persists |
| 33.40 | Non-genuine cartridge detected | Confirm correct region/genuine supply; review firmware level before deploying aftermarket |
| 200.xx / 202.xx / 232.xx | Paper jam -- feed / registration / transport path | Clear jam; inspect pick and separator rollers; check for torn media |
| 24.04 | Duplex print error | Clear duplex path; inspect duplex rollers/chute |
| 126.05 | LVPS error -- power dropped unexpectedly | Check LVPS connections; replace low-voltage power supply (105K446xx) |
| 912.00 | Engine error | Power cycle; if persistent, suspect controller board (961K18690) |
| 55.10 | Unsupported USB device | Remove the device; verify supported storage/accessory |
| 71.01 | Fax station name is not set up | Complete fax setup in device settings (fax-equipped models) |
6. OEM vs. Aftermarket Guidance
Same straight answer we give everyone: it depends on the component.
Fusers and transfer modules: use OEM or proven OEM-equivalent. Color transfer and fusing are tightly calibrated; a cheap fuser that fuses unevenly will chase you through color-density complaints for months. False economy.
Toner cartridges: the aftermarket for this class has improved, but this platform reports smart-chip and non-genuine conditions (31.xx / 33.xx), and firmware updates have historically tightened supply detection. Test one aftermarket cartridge on a representative machine at the current firmware level before deploying at scale.
Rollers and separators: aftermarket is generally fine -- mechanical wear items with straightforward specs.
Controller boards, printheads (LSU), power supplies: OEM or factory-refurbished only. A bad board or power supply on this platform can cascade into other damage.
7. Repair vs. Replace Decision Framework
This is a small-workgroup platform, so the economics are tighter than on the heavy iron. Guidance:
- Fuser, waste bottle, rollers, or a single sensor: repair. These are routine, inexpensive, and keep a healthy machine running.
- Transfer module plus a fuser at the same time: price both against a replacement unit -- on the lower-end C245/C255a the combined parts cost can approach the machine's street price.
- Controller board or printhead failure: price the part first. On the C305ae these carry more value; on an entry C245 a board failure often tips toward replacement.
- Multiple simultaneous failures on a high-count machine: replace. This platform isn't built to be rebuilt indefinitely.
8. Frequently Asked Questions
Are the C305ae, XC2432, and ZC364 the same machine?
Mechanically, yes -- they share the 3501 engine, controller board (961K18690), fax card (961K18700), and top cover, differing mainly in bezel and branding. Parts labeled "for C305ae, XC2432, ZC364" are interchangeable among the three. The C245/C255a/C303a use their own bezels and control-panel variants, so confirm the model before ordering cosmetic or panel parts.
The machine keeps warning about waste toner even though prints look fine. What is it?
That's the waste toner container approaching its limit (82.xx). It's a customer-replaceable part (008R08165). Replace it and reset the counter; don't wait, because the machine will eventually stop to protect itself.
I'm seeing a repeating color defect down the page. How do I isolate it?
Measure the spacing between repeats. A short repeat usually maps to a developer/photoconductor component for one color; a longer repeat in the fusing zone points to the fuser pressure roller; banding across all four colors together points to the transfer belt module (133N23276). Measure before you order.
Do I need the fax card for the C255a / C303a / C305ae?
Only if the unit will send/receive analog fax. The fax card (961K18700 on the C305ae/XC2432/ZC364) is a discrete part; a fax-capable model missing the card, or throwing 71.xx setup codes, may simply need the card installed and configured.
Why won't a fuser from another unit work?
Voltage. The 100V (121K76830), 110V (121K76820), and 220V (121K76810) fusers are not interchangeable. Wrong voltage means either a fuser that never reaches temperature (121.00) or one that burns out.
9. Parts, Support, and Next Steps
Whether you're replacing a waste bottle on a C255a, sourcing a fuser for a C305ae, or cross-referencing a controller board across the XC2432/ZC364 siblings, Argecy has the inventory and the bench experience to help. See the Xerox C305ae parts list and the Xerox C305ae color MFP page for supplies and accessories. For a cross-reference or a repair-vs-replace opinion, reach our team at argecy.com/contact-information or call 1-888-742-9565.
10. Common Failure Points in Order of Frequency
1. Waste Toner Container Full
On a color machine in steady use this is the most frequent service prompt. It's routine (008R08165) -- keep spares and reset the counter after replacing.
2. Fuser Wear
Faded or poorly fused output, hot-offset ghosting, and jams in the fuser zone (121.xx). Confirm voltage before ordering (121K768xx).
3. Pick / Feed Roller Wear
Misfeeds and multi-sheet feeds, most often from Tray 1 and the multipurpose feeder. Replace pick and separator components as a set.
4. Transfer Belt Module Degradation
Registration drift and density loss across all colors at once point to the transfer module (133N23276) rather than a single toner.
5. Printhead / LSU Faults
100.xx / 110.xx codes and image-position or missing-color defects. Reseat cables first; replace the printhead (046K02320) if it recurs.
6. Controller Board / Engine Errors
Persistent 912.xx engine errors or NVRAM-type faults after cabling and firmware are ruled out point to the controller board (961K18690).