Error Code C2253 is a Rank B imaging engine fault generated when the machine’s control circuit detects that the photoconductor (PC) drum motor has failed to turn — the motor lock signal remains HIGH for a predetermined continuous period of time while the motor is commanded to run. The machine cannot print any colour output without the PC drum motor operating correctly, so C2253 halts all printing and requires technician intervention to resolve.
The term “PC motor” in this context refers to the motor that drives the photoconductor drum or drums in the imaging section. On colour bizhub machines, the photoconductor drums for the Y (yellow), M (magenta), C (cyan), and K (black) colour stations must each rotate in synchrony with the intermediate transfer belt during the imaging process. The architecture of the PC motor drive varies significantly across model generations: some models use a single motor for all four colour drums, some use two separate motors (one for YMC, one for K), and some use individual motors per drum. The motor designation, connector path, and control board change accordingly. Correctly identifying the model family and its PC motor architecture is the mandatory first step before beginning any connector or component investigation.
| Field | Details |
|---|---|
| Error Code | C2253 |
| Description | PC motor failure to turn (also described as Color PC motor’s failure to turn on some model families) |
| Error Rank | B — machine halts all printing; requires technician intervention |
| Detection Condition | The motor lock signal remains HIGH for a predetermined continuous period of time while the PC motor is turning (commanded to run) — the control circuit detects motor failure to turn while the motor is energised |
| C2253 vs C2254 | C2253 = motor failure to turn while commanded ON (lock signal HIGH = motor stalled or not rotating). C2254 = motor turning at abnormal timing while commanded OFF (lock signal LOW = unexpected motor rotation when stationary). Both codes involve the same motor; C2253 is the stall/failure-to-rotate detection. |
| Key Motor — MFPB platform (C227/C287, C258/C308/C368) | PC motor (M3 on C227/C287; M2 on C258/C308/C368) — single motor driving all PC drums |
| Key Motor — MFPB platform (C458/C558/C658) | PC motor (M2) — single motor driving all PC drums |
| Key Motor — BASEB platform (C360i/C300i/C250i, C450i/C550i/C650i, C3350i) | Color motor (M2) — drives YMC and K drums |
| Key Motor — PRCB platform (C224/C284/C364, C364e/C284e/C224e) | PC motor (M2) — drives all PC drums |
| Key Motor — PRCB platform (C754/C754e) | PC motor/YMC (M16) — dedicated YMC drum motor (separate from K drum motor) |
| Key Motor — PRCB platform (C452/C552/C652, C451/C551/C651) | Color PC drum motor (M16) — dedicated colour drum motor |
| Related Codes | C2254 (PC motor turning at abnormal timing — same motor, opposite lock signal condition), C2213 (main motor failure to turn — if M3 or main drive motor is implicated), C2252 (PC motor failure — some model families use adjacent codes for related drum drive faults) |
All Affected Models and Motor Architecture
C2253 spans a wide range of bizhub colour model families, with the motor designation and connector path varying considerably. The table below organises affected models by their PC motor architecture. Always confirm the model and the motor designation from this table before beginning connector checks.
| bizhub Models | PC Motor | Motor Connector | Operation Check Signal | Location | Board | Fuse |
|---|---|---|---|---|---|---|
| bizhub C227 / C287 | M3 (PC motor — all drums) | M3 — MFPB CN19E | MFPB CN19E-10 to 14 | 26-C | MFPB | MFPB F11E |
| bizhub 227 / 287 / 367 | M3 (PC motor — all drums) | M3 — MFPB CN19E | MFPB CN19E-10 to 14 | 26-C | MFPB | MFPB F11E |
| bizhub C258 / C308 / C368 | M2 (PC motor — all drums) | M2 — MFPB CN7E | MFPB CN7E (operation check) | Refer to service manual | MFPB | Refer to service manual |
| bizhub C458 / C558 / C658 | M2 (PC motor — all drums) | M2 — MFPB CN7E | MFPB CN7E (operation check) | Refer to service manual | MFPB | Refer to service manual |
| bizhub C360i / C300i / C250i | M2 (Color motor — all drums) | M2 — BASEB CN19E | BASEB CN19E (operation check) | Refer to service manual | BASEB + CPUB | Refer to service manual |
| bizhub C450i / C550i / C650i | M2 (Color motor — all drums) | M2 — BASEB CN19E | BASEB CN19E (operation check) | Refer to service manual | BASEB + CPUB | Refer to service manual |
| bizhub C3350i / C4050i | M2 (Color motor — all drums) | M2 — BASEB CN17E | BASEB CN17E-11 to 15; Check code: 41, Multi code: 1, 2 | 1-C | BASEB + CPUB | BASEB F20E |
| bizhub C224 / C284 / C364 | M2 (PC motor — all drums) | M2 — PRCB CN31 | Refer to service manual | Refer to service manual | PRCB | Refer to service manual |
| bizhub C224e / C284e / C364e | M2 (PC motor — all drums) | M2 — PRCB CN31 | Refer to service manual | Refer to service manual | PRCB | Refer to service manual |
| bizhub C754 / C754e | M16 (PC motor/YMC — colour drums only) | M16 — PRCB CN22 | PRCB CN22-8 (REM), PRCB CN22-11 (LOCK) | 15-K | PRCB | PRCB ICP5 or ICP18 |
| bizhub C654 / C654e | Refer to service manual | Refer to service manual | Refer to service manual | Refer to service manual | PRCB | Refer to service manual |
| bizhub C452 / C552 / C652 | M16 (Color PC drum motor) | M16 — PRCB CN34 | PRCB CN34-8 (REM), PRCB CN34-11 (LOCK) | K-1 | PRCB | PRCB ICP13 |
| bizhub C451 / C551 / C651 | M16 (Color PC drum motor) | M16 — PRCB CN34 | PRCB CN34-8 (REM), PRCB CN34-11 (LOCK) | K-1 | PRCB | PRCB ICP13 |
| bizhub C360 / C280 / C220 | M2 (PC motor — all drums) | M2 — PRCB CN14 | PRCB CN14-8 (REM), PRCB CN14-10 (LOCK) | C-2 to 5 | PRCB | Refer to service manual |
| bizhub 223 / 283 / 423 | M2 (PC motor — all drums) | M2 — PRCB CN4 | Refer to service manual for operation check signal | Refer to service manual | PRCB | Refer to service manual |
ℹ️ Important note on dual-motor models (C754/C754e, C452/C552/C652, C451/C551/C651): These models use separate motors for the YMC colour drums (M16) and the K black drum (a separate motor, typically M17 or equivalent — refer to the service manual for the exact designation). C2253 on these models covers only the YMC colour drum motor (M16). A separate fault code covers the K drum motor. This means C2253 on a dual-motor model does not necessarily prevent mono (K-only) printing — the K drum motor may continue to function, and the machine’s trouble isolation mode may allow mono output to continue. Confirm this with the machine’s control panel before advising the customer on continued use while awaiting parts.
What Does Error Code C2253 Mean?
In the bizhub colour imaging process, the photoconductor (PC) drum is the core of each colour station. Each drum is charged by a charge roller, exposed by the laser writing unit (LWU) to create a latent image, developed by the developing unit which deposits toner onto the latent image, and then transfers the toner image to the intermediate transfer belt. For all of this to function correctly, the drum must rotate at a precise, controlled speed in synchronisation with the laser writing timing, the developing roller speed, and the belt travel speed.
The PC motor drives the drum (or drums, depending on the model) through a gear train. The motor’s internal driver circuit generates a LOCK signal — a frequency-based feedback output that the control board monitors to confirm the motor rotor is turning at the commanded speed. On a correctly operating motor, the LOCK signal remains LOW when the motor is spinning at speed. When the motor is not rotating — whether because it has not started, has stalled under load, or has failed — the LOCK signal goes HIGH. C2253 fires when the LOCK signal remains HIGH for the predetermined continuous period while the motor is commanded to run.
This HIGH lock signal condition can result from:
- The motor not receiving its drive signal at all (open circuit in the connector path)
- The motor receiving the drive signal but being unable to turn (mechanical seizure, coupling failure, imaging unit drive gear locked, or internal motor winding failure)
- The motor turning but the lock signal not reaching the control board (open circuit in the LOCK signal feedback line)
- A control board fault preventing the motor from being driven correctly or the LOCK signal from being read correctly
ℹ️ C2253 vs C2254: C2253 fires when the LOCK signal is HIGH while the motor is commanded ON — the motor is not turning when it should be. C2254 fires when the LOCK signal is LOW while the motor is commanded OFF — the motor appears to be turning when it should be stationary. Both codes involve the same PC motor and share the same remedy procedure. C2253 is the more common of the two and typically indicates a hard motor or connector fault, while C2254 often indicates a sticking drive coupling, a signal line fault, or a marginal motor that continues to coast after the drive signal is removed.
The PC Motor’s Role in the Imaging Process
The photoconductor drum must rotate throughout the entire print cycle — from the moment the machine enters the print-ready state through to the completion of the last page and the machine’s return to standby. The drum rotation serves multiple simultaneous functions:
- Presenting a freshly charged surface to the laser writing unit for each new line of image data
- Carrying the developed toner image forward to the 1st transfer point where the toner is transferred to the ITB
- Carrying the residual toner (not transferred) past the drum cleaning blade which removes it for disposal
- Presenting the cleaned, uncharged drum surface back to the charge roller for recharging
A stopped drum immediately prevents all four of these functions simultaneously. The machine cannot safely continue printing on a stationary drum — toner would accumulate at the developing/transfer interface, the cleaning blade would scrape against a stationary surface, and the laser would burn charge into an unmoving drum surface. C2253 therefore causes an immediate machine halt the moment the lock signal condition is detected, protecting the imaging unit from damage.
The Imaging Unit as a First Suspect — a Critical Field Consideration
On all model families, the imaging unit (IU) — the replaceable drum cartridge that contains the photoconductor drum, the charge roller, and the cleaning section — connects to the PC motor’s gear train through a coupling. The imaging unit’s internal drum gear meshes with the motor drive gear train when the IU is installed. If the imaging unit is not fully and correctly seated, if its drum gear is damaged, or if a mechanical fault inside the IU has caused the drum to seize internally, the PC motor will stall under the abnormal load and generate C2253.
For this reason, the service manual remedy sequence for C2253 always includes a check of the imaging unit’s mechanical engagement with the drive system as one of the first steps — checking the drive coupling on the motor side covers only half the mechanical chain. The imaging unit’s coupling to the drive train must also be confirmed as correct and free-turning before the motor itself is condemned.
A seized or damaged imaging unit generating C2253 is not an uncommon scenario, particularly on machines that have experienced a severe jam involving the drum area, or on machines where the imaging unit has reached the end of its service life and the drum surface has degraded to the point of creating abnormal friction against the cleaning blade.
Common Causes of C2253
- Loose or disconnected connector at the PC motor to control board — most common cause. The motor drive connector carries both the drive voltage signals (REM/enable) and the LOCK feedback signal. A loose connector at the motor body end or at the board end simultaneously prevents the motor from receiving its drive command and prevents the board from reading the LOCK signal, resulting in a persistent HIGH lock condition and C2253. This is the highest-probability first cause on any C2253 call and takes less than a minute to check.
- Imaging unit not fully seated or drive coupling not engaged. If the IU was recently replaced, or if the machine experienced a jam that was cleared by removing and reinserting the IU, the IU’s drum gear may not be fully meshed with the motor’s drive train. The motor attempts to run but cannot transmit torque to the drum — the motor stalls under the first load, and the lock signal rises. This resolves immediately upon correctly seating the IU.
- Imaging unit internal mechanical fault — drum gear stripped, drum seized. A drum gear inside the IU that has cracked, stripped its teeth, or locked due to internal debris or drum surface failure will prevent the drum from turning even when the motor is correctly engaged. Confirm by attempting to rotate the drum by hand (with power off and IU partially extracted to access the drive gear) — a drum that cannot be rotated by hand has an internal fault. Replace the affected imaging unit.
- PC motor drive coupling failure. The coupling between the motor shaft and the first driven gear in the drum drive train can crack, slip, or disengage. The motor spins freely but transmits no torque to the drive train. The motor itself runs (no lock signal), but because no torque reaches the drum the imaging system may produce errors at multiple points simultaneously. Note: a completely slipped coupling where the motor spins freely with no load may not generate a HIGH LOCK signal and may instead produce image quality faults. A partially slipped coupling that occasionally drives the drum can produce intermittent C2253.
- PC motor internal winding failure. An open winding inside the motor prevents rotor rotation even when drive voltage is applied. The lock signal rises immediately and remains HIGH. On high-volume machines where the PC motor has accumulated many operational hours, winding failure is the most common hardware failure after connector and drive coupling issues. The motor operation check in service mode will either fail to initiate or will immediately assert a lock condition.
- Debris or obstruction in the drum drive gear train. Paper fragments, toner deposits, or a foreign object that has entered the gear train can physically block the drive train from turning. The motor stalls against the obstruction and C2253 is generated. This is more common after a severe paper jam in the imaging area that pulled paper into the drum drive mechanism.
- Control board fuse blown (MFPB F11E on C227/C287 and C287/227 mono; PRCB ICP5 or ICP18 on C754/C754e; PRCB ICP13 on C452/C552/C652; BASEB F20E on C3350i/C4050i). A blown protective fuse on the control board removes power from the motor driver circuit, preventing the motor from being driven regardless of the board’s command output. The motor receives no drive voltage, does not turn, and the lock signal remains HIGH. Fuse conduction must be verified before condemning the control board.
- CPUB improper installation — BASEB-platform models (C360i/C300i/C250i, C450i/C550i/C650i, C3350i/C4050i). A CPUB that is not fully seated in its slot disrupts the BASEB system architecture and can prevent the PC motor drive signal from being correctly generated. CPUB seating is a documented remedy check step for all BASEB-platform C2253 calls.
- Control board failure (MFPB, PRCB, or BASEB). Board-level failure of the motor driver output circuit or the LOCK signal input circuit is the least common root cause. Board replacement is always the final escalation step after all connector, mechanical, coupling, and fuse causes have been confirmed or eliminated.
Quick Reference — Troubleshooting by Symptom
| Symptom | Most Likely Cause | First Action |
|---|---|---|
| C2253 on first print after IU replacement or after a drum-area jam was cleared | IU not fully seated — drum gear not engaged with drive train | Remove and firmly reseat the imaging unit; confirm the IU latches correctly; listen for the drive coupling click at full insertion; attempt a test print |
| C2253 with no audible motor sound at all during print attempt | Motor connector open circuit; motor winding failure; control board fuse blown | Reseat motor-to-board connector; check board fuse conduction; perform motor operation check; replace motor if confirmed failed |
| C2253 with audible motor attempting to start then immediately stopping | Mechanical obstruction in drive train; IU drum seized; drive gear stripped inside IU | Power off; manually attempt to rotate drum through drive gear; identify binding point; replace IU or clear obstruction as appropriate |
| C2253 intermittent — clears on power cycle then returns after several prints | Motor connector marginally seated — intermittent contact under vibration; marginal motor winding; marginal drive coupling | Reseat motor connector and inspect all pin contacts; monitor motor operation check across warm and cold cycles; consider proactive motor replacement |
| C2253 immediately after the machine was moved or transported | Motor connector dislodged during transport; IU shifted and drive coupling disengaged | Reseat motor connector; remove and reseat IU; confirm all internal connectors are fully locked |
| C2253 with C2254 also present | Motor or drive chain fault affecting both rotation states; or intermittent lock signal line fault producing both HIGH and LOW false readings | Reseat motor connector; inspect drive coupling; perform motor operation check; check lock signal line continuity from motor to control board |
| C2253 on C754/C754e or C452/C552/C652 — mono printing still works | C2253 on dual-motor model affects YMC motor (M16) only; K motor is separate and functioning | Confirm colour IU coupling and M16 connector (PRCB CN22 for C754; PRCB CN34 for C452/C552/C652); proceed with motor operation check on M16 specifically |
| C2253 on BASEB-platform model with CPUB partially seated | CPUB not fully engaged — disrupts BASEB system motor drive output | Remove and firmly reseat CPUB; power cycle; attempt test print before further investigation |
| C2253 persists after confirmed motor, confirmed-good coupling, fully seated connectors | Control board fuse blown; control board driver circuit failure | Check board fuse (model-specific — see table); replace control board as final step |
Step-by-Step Diagnostic and Repair Procedure
⚠️ Warning: Switch the machine OFF at the main power switch and disconnect the power cord before accessing the imaging section, handling imaging units, or inspecting connectors in the drum drive area. The photoconductor drum surface is extremely sensitive to light — even brief exposure to ambient light can cause partial desensitisation and image quality defects. If the imaging unit must be removed for inspection, cover it immediately with the protective bag it came in, or wrap it in a clean sheet of paper to block light exposure. Do not touch the drum surface with bare hands. Allow at least 10 minutes after power-off before accessing the imaging section.
Step 1 — Confirm the Model Family, Motor Designation, and All Active Codes
- Confirm the bizhub model and identify the correct PC motor designation, connector, and control board from the affected models table before beginning. Using M2, M3, or M16 with the wrong connector reference wastes diagnostic time and risks misidentification.
- Record all active error codes. Note whether C2254 (abnormal timing — motor turning when stationary) is also present, as this suggests a lock signal line issue in addition to the motor fault. Note whether any image quality fault codes (drum charge faults, develop faults) are also present alongside C2253, which may indicate the IU itself is the root cause of the drum failing to rotate.
- For dual-motor models (C754/C754e, C452/C552/C652, C451/C551/C651): confirm whether mono printing (K-only) is still possible. If mono printing works, the K drum motor is functioning and the fault is isolated to the YMC motor (M16) — this confirms C2253 is specifically a colour-drum motor fault and not a more widespread drive system failure.
Step 2 — Reinstall and Check the Imaging Unit(s)
- Power the machine OFF and disconnect the power cord.
- Open the front cover or the imaging unit access area per the service manual for your model.
- Remove the imaging unit(s). On models with four separate imaging units (one per colour), remove each unit and inspect its drum drive gear. Look for:
- Cracked or stripped drum drive gear teeth on the IU side.
- Visible debris (paper fragments, toner clusters, foreign objects) lodged in or near the drum drive gear.
- Any drum surface irregularity that suggests the drum has seized to the cleaning blade (severe toner buildup producing drag, or physical damage to the drum coating creating high friction).
- Attempt to rotate the drum by hand by turning the drive gear on the IU. It should rotate freely with light, even resistance. A drum that cannot be rotated by hand, or that rotates with grinding resistance, has an internal fault — replace the affected IU.
- Reinstall the imaging unit(s) firmly, confirming each unit latches fully into its seated position. A correctly seated IU should produce an audible and tactile click as the drum drive coupling engages. Partially inserted IUs are one of the most common causes of C2253 after a drum replacement.
- Reconnect power and attempt a test print. If C2253 does not recur, the fault was an IU seating or IU mechanical issue — document and close.
Step 3 — Inspect and Reseat the PC Motor Connector
- Power the machine OFF and disconnect the power cord.
- Locate the PC motor and its connector to the control board. Use the correct connector reference for your model:
- C227 / C287 / bizhub 227 / 287 / 367 (M3): M3 — MFPB CN19E
- C258 / C308 / C368 (M2): M2 — MFPB CN7E
- C458 / C558 / C658 (M2): M2 — MFPB CN7E
- C360i / C300i / C250i (M2): M2 — BASEB CN19E
- C450i / C550i / C650i (M2): M2 — BASEB CN19E
- C3350i / C4050i (M2): M2 — BASEB CN17E
- C224 / C284 / C364 / C224e / C284e / C364e (M2): M2 — PRCB CN31
- C754 / C754e (M16): M16 — PRCB CN22
- C452 / C552 / C652 / C451 / C551 / C651 (M16): M16 — PRCB CN34
- C360 / C280 / C220 (M2): M2 — PRCB CN14
- bizhub 223 / 283 / 423 (M2): M2 — PRCB CN4
- Press the connector locking tab, fully withdraw the connector from the board, and firmly reseat it until the locking tab audibly clicks. Also reseat the motor-body-side connector at the motor itself.
- Inspect all pins in both connector halves for bent contacts, pushed-back pins, toner contamination, or corrosion. Clean with isopropyl alcohol and a soft brush if contamination is found.
- Inspect the harness run from the motor to the board for pinch points, abraded insulation, or sections where the harness has been caught by a panel edge or imaging unit movement.
- Reconnect power and attempt a test print. If C2253 does not recur, the fault was a connector seating issue — document and close.
Step 4 — Check CPUB Installation (BASEB-Platform Models Only)
- On models using the BASEB/CPUB architecture (C360i/C300i/C250i, C450i/C550i/C650i, C3350i/C4050i), confirm CPUB is correctly and fully seated in its board slot.
- Power the machine OFF and disconnect the power cord. Access the CPUB per the service manual for your model.
- Remove the CPUB and reseat it firmly, ensuring all edge connector contacts are fully engaged and any locking screws or retaining clips are secured.
- Reconnect power and attempt a test print. If C2253 clears, the fault was a CPUB seating issue — document and close.
Step 5 — Inspect the PC Motor Drive Coupling
- Power the machine OFF and disconnect the power cord.
- Access the PC motor drive coupling — the coupling between the motor shaft and the first driven gear in the drum drive train. Refer to the service manual for the motor’s physical location and the access procedure for your model.
- Inspect the coupling for:
- Cracks in a plastic coupling body.
- Stripped teeth on a coupling gear or pinion.
- A coupling that has disengaged from the motor shaft or the drive gear shaft.
- Apply gentle manual torque to the coupling to confirm force transfers from the motor shaft to the drum drive train. A coupling that allows the motor shaft to rotate without moving the drive gear has failed.
- Also manually rotate the drum drive gear train by hand (power off) through at least one full drum rotation equivalent. Rotation should be smooth with moderate resistance. Binding at any point indicates an obstruction in the gear train — inspect the gear train for debris, misaligned gears, or a collapsed gear.
- Replace any failed coupling. Refer to the service manual for the correct coupling or gear part number for your model.
Step 6 — Perform the PC Motor Operation Check
- With connectors confirmed seated and mechanical path confirmed clear, reconnect power and enter Service Mode.
- Navigate to the motor operation check function. Perform the PC motor operation check using the parameters for your model:
- C227 / C287 / bizhub 227 / 287 / 367 (M3): Control signal: MFPB CN19E-10 to 14; Location: 26-C
- C258 / C308 / C368 (M2): Control signal: MFPB CN7E; refer to service manual for pin designation and location
- C458 / C558 / C658 (M2): Control signal: MFPB CN7E; refer to service manual for pin designation and location
- C360i / C300i / C250i / C450i / C550i / C650i (M2): Control signal: BASEB CN19E; refer to service manual for pin designation and location
- C3350i / C4050i (M2): Check code: 41; Multi code: 1, 2; Control signal: BASEB CN17E-11 to 15; Location: 1-C
- C754 / C754e (M16): Control signal: PRCB CN22-8 (REM), PRCB CN22-11 (LOCK); Location: 15-K
- C452 / C552 / C652 / C451 / C551 / C651 (M16): Control signal: PRCB CN34-8 (REM), PRCB CN34-11 (LOCK); Location: K-1
- C360 / C280 / C220 (M2): Control signal: PRCB CN14-8 (REM), PRCB CN14-10 (LOCK); Location: C-2 to 5
- C224 / C284 / C364 / -e variants (M2): M2 operation check via PRCB CN31; refer to service manual for the exact pin references and location
- bizhub 223 / 283 / 423 (M2): M2 operation check via PRCB CN4; refer to service manual for signal and location
- During the operation check, listen and feel (via the machine frame) for smooth, consistent motor rotation. A motor that does not start, starts then immediately stops, produces grinding noise, or causes the operation check to report a lock failure has an internal winding or bearing failure and must be replaced.
- If the motor runs correctly during the operation check but C2253 appeared in normal operation, the fault may be load-dependent — a motor that can run under the minimal load of an operation check but stalls under the full load of driving the drum through the gear train with the IU installed. If this is suspected, run the operation check with the IU installed and monitor whether the motor stalls under the added load.
Step 7 — Check Control Board Fuse Conduction
- Power the machine OFF and disconnect the power cord.
- Access the control board and locate the protective fuse for the PC motor supply circuit:
- C227 / C287 / bizhub 227 / 287 / 367: MFPB F11E
- C754 / C754e: PRCB ICP5 or ICP18 (check both)
- C452 / C552 / C652 / C451 / C551 / C651: PRCB ICP13
- C3350i / C4050i: BASEB F20E
- All other models: Refer to the service manual for the applicable fuse or ICP designation on the MFPB, PRCB, or BASEB for the PC motor supply circuit
- Test conduction with a multimeter in continuity mode. An open circuit confirms a blown fuse. Replace with an identical rated device — do not substitute a higher-rated fuse.
- Investigate why the fuse blew before reassembly. A blown motor supply fuse indicates an overcurrent event — most commonly caused by a motor with shorted windings, or by a severe mechanical seizure that caused the motor to draw stall current. Replacing the fuse without correcting the root cause will result in the replacement fuse blowing on the next print cycle.
Step 8 — Replace the PC Motor
- Power the machine OFF and disconnect the power cord.
- Remove the PC motor per the replacement procedure in the service manual for your model. Note the motor mounting orientation, coupling engagement, and harness routing before removal.
- Install the replacement motor:
- Confirm the motor shaft coupling engages correctly with the drum drive gear train input.
- Fit and tighten all motor mounting screws.
- Route the motor harness as in the original installation, ensuring no pinch points.
- Reconnect the motor harness to the control board connector, confirming it is fully locked.
- Reconnect power and perform the motor operation check (Step 6) with the replacement motor before inserting imaging units, to confirm electrical operation at no-load before the full drum load is applied.
- Install all imaging units correctly and attempt a full-colour test print. Confirm C2253 does not recur across at least 10 consecutive printed sheets before returning the machine to service.
Step 9 — Replace the Control Board
- If a confirmed-good replacement motor, intact board fuse, fully seated connectors, and clear mechanical drive path all fail to resolve C2253, the fault is isolated to the control board’s motor driver output or LOCK signal input circuit.
- Replace the appropriate board for your model:
- C227/C287 / bizhub 227/287/367 / C258/C308/C368 / C458/C558/C658: Replace MFPB
- C360i/C300i/C250i / C450i/C550i/C650i / C3350i/C4050i: Replace CPUB first; replace BASEB if CPUB replacement does not resolve
- C224/C284/C364 / -e variants / C754/C754e / C452/C552/C652 / C451/C551/C651 / C360/C280/C220 / bizhub 223/283/423: Replace PRCB
- Photograph all connector positions before removing the existing board. Reinstall all harnesses on the replacement board in identical positions. Confirm each connector is fully latched before powering on.
- After board replacement, perform the motor operation check to confirm the replacement board drives the PC motor correctly, then run a full-colour test print to confirm C2253 does not recur.
Service Mode Reference — PC Motor Operation Check by Model
| Model Group | Motor | Check Code | Multi Code | Control Signal | Location | Board Fuse |
|---|---|---|---|---|---|---|
| C227 / C287 / bizhub 227 / 287 / 367 | M3 | — | — | MFPB CN19E-10 to 14 | 26-C | MFPB F11E |
| C258 / C308 / C368 | M2 | — | — | MFPB CN7E (refer to service manual for pins) | Refer to SM | Refer to SM |
| C458 / C558 / C658 | M2 | — | — | MFPB CN7E (refer to service manual for pins) | Refer to SM | Refer to SM |
| C360i / C300i / C250i | M2 | — | — | BASEB CN19E (refer to service manual for pins) | Refer to SM | Refer to SM |
| C450i / C550i / C650i | M2 | — | — | BASEB CN19E (refer to service manual for pins) | Refer to SM | Refer to SM |
| C3350i / C4050i | M2 | 41 | 1, 2 | BASEB CN17E-11 to 15 | 1-C | BASEB F20E |
| C754 / C754e | M16 (YMC) | — | — | PRCB CN22-8 (REM), PRCB CN22-11 (LOCK) | 15-K | PRCB ICP5 or ICP18 |
| C452 / C552 / C652 / C451 / C551 / C651 | M16 (Color) | — | — | PRCB CN34-8 (REM), PRCB CN34-11 (LOCK) | K-1 | PRCB ICP13 |
| C360 / C280 / C220 | M2 | — | — | PRCB CN14-8 (REM), PRCB CN14-10 (LOCK) | C-2 to 5 | Refer to SM |
| C224 / C284 / C364 / -e variants | M2 | — | — | PRCB CN31 (refer to service manual for pins) | Refer to SM | Refer to SM |
| bizhub 223 / 283 / 423 | M2 | — | — | PRCB CN4 (refer to service manual for pins) | Refer to SM | Refer to SM |
Understanding C2253 in the Context of Related Drum Drive Codes
C2253 sits within a group of imaging engine drive motor fault codes. Understanding the adjacent codes prevents confusion when multiple codes are active:
- C2253 — PC motor failure to turn — this article. Motor lock signal HIGH while motor commanded ON. Motor is not rotating when it should be. Root cause chain: connector open → mechanical seizure → coupling failure → motor winding failure → board fuse blown → board failure.
- C2254 — PC motor turning at abnormal timing. Motor lock signal LOW while motor commanded OFF. Motor appears to be rotating when it should be stationary. Root causes typically include: motor coasting after drive removal (no braking), a sticking coupling, a lock signal line short to ground, or a board fault generating spurious lock LOW. Both C2253 and C2254 share the same remedy procedure.
- C2213 (or equivalent on some model families) — Main motor failure to turn. On models where the main motor drives both the paper transport and the PC drum sections, a failed main motor can produce what appears to be a drum drive fault. If the main motor is shared with the drum drive, confirm the main motor is running before condemning the PC motor separately.
- C2164 / C2165 / C216x — PC charge malfunction codes (charge roller faults by colour). These indicate imaging unit electrical faults rather than mechanical motor faults. If C2253 and a C216x code appear together, suspect the imaging unit is the shared root cause — a severely degraded IU can both seize the drum mechanically (producing C2253) and fail its charge circuit (producing C216x).
Rank B Reset Procedure
C2253 is classified as Rank B. The machine halts all printing and cannot resume until the fault is resolved. On dual-motor models (C754/C754e, C452/C552/C652, C451/C551/C651), the trouble isolation function may allow mono (K-only) printing to continue while the colour drum motor fault is addressed — check the machine’s control panel for the trouble isolation option and confirm with the customer whether limited mono output is acceptable while parts are obtained.
- After completing the repair, power the machine OFF at the main power switch.
- Wait at least 10 seconds for all internal circuits to fully discharge.
- Power the machine ON and observe the control panel during startup initialisation. The PC motor runs during the machine’s startup warm-up cycle — C2253 appearing during startup indicates the fault is present under no-load conditions and points to a motor or connector fault rather than a load-dependent mechanical issue.
- Submit a full-colour test print. Confirm C2253 does not appear during the print cycle.
- Print a minimum of 10 consecutive full-colour sheets at normal speed to confirm stable motor operation under continuous load before returning the machine to service.
Preventive Maintenance Recommendations
- Reseat the PC motor connector at every PM visit on high-volume colour machines. The PC motor runs continuously during every print job and vibration from the gear train progressively loosens the motor connector over time. A 30-second connector reseat during PM is the single most preventive action against intermittent C2253 between scheduled visits.
- Inspect the PC motor drive coupling during drum/IU replacement. Every time an imaging unit is replaced, the drum drive coupling is disengaged and re-engaged. Including a visual check of the coupling condition during IU replacement — before closing the machine — adds less than one minute to the procedure and can identify a fatigued coupling before it fully fails in service.
- Confirm IU seating after every imaging unit replacement and after every drum-area jam clearance. The most frequent cause of post-service C2253 calls is an IU that was not fully seated. Making full IU seating confirmation — including a test print — the mandatory final step of any IU replacement or drum-area jam clearance procedure eliminates the most common avoidable C2253 callback.
- On BASEB-platform models, include CPUB seating verification in major PM. The CPUB can work loose from its edge connector over time, particularly on machines that vibrate due to high-volume paper transport. Including a CPUB reseat in major PM prevents C2253 and other BASEB-platform motor faults from appearing between scheduled visits.
- Replace imaging units at or before the rated drum life — never run them past severe degrade warnings. Severely worn imaging unit drums produce abnormally high friction against the cleaning blade and developing roller, increasing the mechanical load on the PC motor to the point where the motor stalls under extended continuous printing. The IU life counter in service mode shows accumulated drum rotation — replace any IU showing severe degrade well before it reaches the point of causing motor stalls.
Professional Technician Summary
Error Code C2253 is a photoconductor drum motor stall detection: the control board detected that the PC motor’s lock signal remained HIGH while the motor was commanded to run, indicating the motor did not turn. The fault chain runs from the simplest and most common cause — a loose motor connector — through imaging unit seating and drive coupling issues, to motor winding failure and finally board-level faults.
The motor designation and connector reference differ across model generations (M3 on MFPB CN19E for C227/C287 and mono 227/287/367; M2 on MFPB CN7E for C258/C308/C368 and C458/C558/C658; M2 on BASEB CN19E for C360i/C450i families; M16 on PRCB CN22 for C754/C754e; M16 on PRCB CN34 for C452/C552/C652 families). Identifying the correct motor and connector is the mandatory first step before any physical investigation.
In field practice, the most common causes of C2253 in order of frequency are: loose motor connector, imaging unit not fully seated, imaging unit with seized or stripped drum drive gear, and PC motor winding failure. The motor operation check in service mode reliably distinguishes between a motor and connector/coupling fault — a motor that passes the operation check with no-load but generates C2253 under normal print conditions points to a load-dependent mechanical fault in the IU or the gear train rather than the motor itself. Board replacement is an uncommon escalation step that is justified only after all mechanical and connector causes have been eliminated.