Error Code C0216 is a Rank B Large Capacity Tray (LCT) fault generated when the bizhub detects that the LCT paper stack has failed to reach the upper feed position within the allowed time after the lift-up operation was initiated. The machine commands the LCT lift-up motor (M1) to raise the paper platform, then monitors the LCT upper limit sensor (PS2) for confirmation that the top sheet has reached the correct height for the pick-up rollers to engage. If PS2 does not turn ON (blocked) within the predetermined timeout period, the machine halts and logs C0216.

C0216 belongs to the same position-feedback fault family as C0202 (Tray 1), C0204 (Tray 2), C0206 (Tray 3), and C0208 (Tray 4) — but it is specific to the optional Large Capacity Unit (LCU/LCT) rather than the standard drawer trays. The LCT is a standalone high-capacity paper feeding unit holding typically 2,500 to 3,500 sheets that connects to the base machine via a dedicated interface. Because the LCT contains its own dedicated control board — the LU drive board (LUDB) — its diagnostic architecture differs from the cabinet-based trays (which use the PCCB): the LUDB is the primary board to investigate, not the PCCB or MFPB.

Field experience consistently shows that M1 lift-up motor failure is the single most common cause of C0216 on LCT-equipped machines, and it occurs across all LCT model generations. Experienced technicians often carry a spare M1 as a standard van stock item for LCT-equipped sites.

Field	Details
Error Code	C0216
Description	LCT up/down abnormality (also described as External LCT up/down abnormality on some model families)
Error Rank	B — requires technician intervention; main power off/on may temporarily clear the display but the code will return on the next LCT lift attempt if the root cause is not resolved
Detection Condition	The LCT upper limit sensor (PS2) is not turned ON (blocked) even after the set period of time has elapsed after the paper lift-up operation began
Affected Unit	Large Capacity Tray (LCT / LCU) — optional external unit only; not generated by a base-configuration machine
Applicable LCT Units	LU-204, LU-205, LU-207, LU-301, LU-302, LU-303 (depending on model family — see affected models table)
Key Components	LCT lift-up motor (M1), LCT upper limit sensor (PS2), LU drive board (LUDB)
M1 Motor Connector	M1 → LUDB CN3 (all LCT generations); control signal: LUDB CN3-4 (ON)
PS2 Sensor Signal Path — LU-204 / LU-205	PS2 → relay CN406 → LUDB CN5; signal: LUDB CN5-3 (ON); wiring ref: LU-204/LU-205 4-G
PS2 Sensor Signal Path — LU-207	PS2 → relay CN406 → LUDB CN5; signal: LUDB CN5-3 (ON); wiring ref: LU-207 4-G
PS2 Sensor Signal Path — LU-301 / LU-302 / LU-303	PS2 → relay CN3 → LUDB CN5; signal: LUDB CN5-3 (ON); wiring ref: LU-30x 4-G
M1 Load Check (where documented)	Check code: 23, Multi code: 8, Control signal: LUDB CN3-4 (ON); wiring ref: applicable LCT 3-G
LUDB Fuse	LUDB ICP2 (LU-204/LU-301 variants) — conduction check required before board replacement
Severity	High — machine halts; all LCT printing is disabled. Standard drawer trays (Trays 1–3) typically remain available subject to trouble isolation mode.
Related Codes	C0202 (Tray 1 lift failure), C0204 (Tray 2 lift failure), C0206 (Tray 3 lift failure), C0208 (Tray 4 lift failure), C0214 (LCT shift failure), C0002 (Paper feed communication error)

All Affected Models and LCT Variants

C0216 applies to bizhub models that support an optional Large Capacity Unit. The LCT model designation determines the relay connector label in the PS2 signal path — this is the most practically important difference between LCT generations for diagnostic purposes. Confirm the LCT model from the unit’s identification label before beginning diagnosis.

bizhub Models	LCT Unit	Lift Motor	Upper Limit Sensor	M1 Connector	PS2 Relay Connector	PS2 Signal	M1 Wiring Ref.
bizhub C452 / C552 / C652	LU-204	M1	PS2	LUDB CN3	PS2 → relay CN406 → LUDB CN5	LUDB CN5-3 (ON)	LU-204 3-G
bizhub C454 / C554 / C654	LU-204	M1	PS2	LUDB CN3	PS2 → relay CN406 → LUDB CN5	LUDB CN5-3 (ON)	LU-204 3-G
bizhub C454e / C554e	LU-204	M1	PS2	LUDB CN3	PS2 → relay CN406 → LUDB CN5	LUDB CN5-3 (ON)	LU-204 3-G
bizhub C554e / C654e	LU-301	M1	PS2	LUDB CN3	PS2 → relay CN3 → LUDB CN5	LUDB CN5-3 (ON)	LU-301 3-G
bizhub C754 / C754e	LU-204 or LU-301	M1	PS2	LUDB CN3	CN406 (LU-204) / CN3 (LU-301) → LUDB CN5	LUDB CN5-3 (ON)	LU-204/301 3-G
bizhub 554e / 654e	LU-204 or LU-301	M1	PS2	LUDB CN3	CN406 (LU-204) / CN3 (LU-301) → LUDB CN5	LUDB CN5-3 (ON)	LU-204/301 3-G
bizhub C258 / C308 / C368	LU-302	M1	PS2	LUDB CN3	PS2 → relay CN3 → LUDB CN5	LUDB CN5-3 (ON)	LU-302 3-G
bizhub C458 / C558 / C658	LU-207 or LU-302	M1	PS2	LUDB CN3	CN406 (LU-207) / CN3 (LU-302) → LUDB CN5	LUDB CN5-3 (ON)	LU-207/302 3-G
bizhub 308e / 368e	LU-302	M1	PS2	LUDB CN3	PS2 → relay CN3 → LUDB CN5	LUDB CN5-3 (ON)	LU-302 3-G
bizhub 458e / 558e / 658e	LU-207 or LU-302	M1	PS2	LUDB CN3	CN406 (LU-207) / CN3 (LU-302) → LUDB CN5	LUDB CN5-3 (ON)	LU-207/302 3-G
bizhub C450i / C550i / C650i	LU-207 or LU-302	M1	PS2	LUDB CN3	CN406 (LU-207) / CN3 (LU-302) → LUDB CN5	LUDB CN5-3 (ON)	LU-207/302 3-G
bizhub C750i	LU-205 or LU-303	M1	PS2	LUDB CN3	PS2 → relay CN406 → LUDB CN5	LUDB CN5-3 (ON)	LU-205/303 3-G
bizhub C759	LU-205 or LU-303	M1	PS2	LUDB CN3	PS2 → relay CN406 → LUDB CN5	LUDB CN5-3 (ON)	LU-205/303 3-G
bizhub 550 / 650 (LU-301 era)	LU-301	M1	PS2	LUDB CN3	PS2 → relay CN3 → LUDB CN5	LUDB CN5-3 (ON)	LU-301 3-G

ℹ️ Critical Note on PS2 Relay Connector: The single most important model-specific detail for C0216 diagnosis is the relay connector label in the PS2 signal path. On LU-204, LU-205, and LU-207 units, the PS2 signal travels through intermediate relay connector CN406 before reaching LUDB CN5. On LU-301, LU-302, and LU-303 units, the relay connector is labelled CN3. Both connector labels must be confirmed seated — the relay connector is frequently overlooked during connector checks and is a common source of intermittent C0216. Confirm the LCT model designation before beginning the PS2 signal path check.

What Does Error Code C0216 Mean?

The LCT is a high-volume paper feeding unit designed to hold large paper stocks — typically 2,500 to 3,500 sheets of standard 80 gsm paper depending on the LCT model — reducing the frequency of paper loading interruptions on high-throughput machines. Unlike the standard drawer trays, which are integrated into the base machine or an optional paper feed cabinet, the LCT is a self-contained unit that connects to the side or rear of the base machine via a dedicated electrical interface and paper path interface.

Inside the LCT, the paper is stored on a platform that is raised incrementally by M1 (the lift-up motor) as the paper stack is consumed during printing, keeping the top sheet in constant contact with the pick-up rollers at the correct feed height. When the LCT is loaded and pushed into position, the LUDB commands M1 to initiate an initial lift-up cycle to bring the top of the paper stack to the starting feed height. PS2, the upper limit sensor, monitors when the top of the stack reaches this position.

C0216 fires if PS2 does not confirm the stack reached the upper position within the machine’s timeout window after M1 was commanded. This can occur because:

• M1 never received a drive signal (connector fault or LUDB output failure)
• M1 received a drive signal but could not turn (internal winding failure, seized coupling, or mechanical overload)
• M1 ran and the platform rose, but PS2 never reported it (sensor fault, contamination, misalignment, or open circuit in the PS2 signal path)

All three failure modes produce exactly the same C0216 error code, which is why the diagnostic sequence must work through mechanical, connector, sensor, and motor checks in order before concluding with board replacement.

ℹ️ LCT vs. cabinet tray architecture: Unlike Tray 3 (C0206) and Tray 4 (C0208), which use the PCCB and MFPB as their control boards, the LCT’s lift-up motor and upper limit sensor are controlled exclusively by the LUDB (LU drive board), which is housed inside the LCT unit itself. The base machine’s MFPB communicates with the LUDB over an interface connection but does not directly drive M1 or read PS2. Diagnostic focus therefore begins inside the LCT at the LUDB, not at the base machine’s main boards.

Common Causes of C0216

• M1 lift-up motor internal failure — the most common cause. The LCT lift motor operates under significant and continuous mechanical load: it raises a paper stack weighing several kilograms from the fully loaded lower position to the upper feed height every time the LCT is loaded or the machine returns from a sleep state. Over time, the motor windings degrade from thermal cycling and the brushes or bearings wear. M1 failure is well-documented in field experience across all LCT generations. Technicians servicing high-volume LCT sites commonly carry M1 as standard van stock. When the LCT makes no sound whatsoever on power-on or tray insertion, M1 failure should be the primary suspect after connectors have been confirmed.
• Loose or disconnected connector at M1 to LUDB CN3 — the harness connector between M1 and LUDB CN3 can work loose from the vibration of continuous lift cycling. An open circuit here prevents the LUDB from driving M1 at all, producing C0216 with no audible motor activity on tray insertion.
• Loose or disconnected connector in the PS2 signal path — particularly the relay connector — the PS2 signal travels through an intermediate relay connector (CN406 on LU-204/LU-205/LU-207; CN3 on LU-301/LU-302/LU-303) before reaching LUDB CN5. This relay connector is positioned in a physically accessible area of the LCT harness and is subject to vibration from paper loading and routine LCT door opening. A loose relay connector means M1 may lift the platform to the correct height, PS2 may actuate physically, but the signal never reaches LUDB CN5-3 and C0216 is generated. This is a common source of intermittent C0216 that clears on power cycle then returns.
• Paper overloaded beyond the LCT maximum fill mark — loading paper above the maximum fill indicator increases the weight and friction the lift mechanism must overcome. M1 may stall before the stack reaches PS2’s detection height, or the increased load may cause M1 to draw excessive current and trigger internal thermal protection, stopping the motor mid-lift.
• Paper fragment or debris beneath the LCT platform — a torn sheet or foreign object lodged beneath the platform physically prevents full platform travel. The platform may rise partially and stop short of PS2’s detection zone. This is most likely after a previous LCT paper jam that was cleared without fully inspecting beneath the platform.
• M1 drive coupling failure — the coupling between M1’s motor shaft and the lift gear train can crack or disengage due to age and mechanical stress. A failed coupling allows the motor to spin without transmitting torque to the platform lift mechanism.
• PS2 sensor contamination or misalignment — paper dust and toner accumulate on the PS2 sensor’s optical faces over time, progressively reducing its ability to detect the platform actuator flag. A physically misaligned PS2 — caused by the LCT being bumped, the sensor bracket loosening, or the actuator flag bending — will produce C0216 even when M1 lifts the platform to the correct height.
• Damaged or pinched LCT harness — the harness routing inside the LCT can be abraded by the LCT’s own door or paper loading mechanism, or damaged during previous service work. Intermittent wire breaks in the M1 drive line or PS2 signal line produce intermittent C0216.
• LUDB ICP2 fuse blown — on LU-204 and LU-301 variants, an internal protection fuse (ICP2) on the LUDB sits in the power path for M1 or the sensor supply. A blown ICP2 will prevent M1 from running regardless of the LUDB’s command state, producing C0216 without any fault in M1 or PS2 themselves. Always check ICP2 conduction before condemning the LUDB board.
• Faulty LUDB (LU drive board) — if the LUDB’s M1 driver output circuit or PS2 input reading circuit has failed electrically, C0216 will persist despite good mechanical and connector conditions. LUDB failure is less common than motor failure but is documented across all LCT generations. It is the final step after all other causes have been eliminated.

Quick Reference — Troubleshooting by Symptom

Symptom	Most Likely Cause	First Action
C0216 immediately after loading the LCT; LCT makes no sound on power-on	M1 motor failure (most common); M1 connector at LUDB CN3 loose or open	Reseat M1–LUDB CN3 connector; if still silent, perform M1 load check in service mode; replace M1 if load check fails
C0216 with audible motor running noise from LCT but platform does not rise	M1 drive coupling failed — motor spinning without transmitting torque to lift gear train	Access M1 drive coupling; inspect for cracks or disengagement; replace coupling
C0216 with platform visibly rising but stopping short of full upper position	Paper overloaded beyond max fill; debris beneath platform; M1 stalling under load; worn lift gear train	Check paper fill level; remove LCT platform and inspect beneath for debris; reduce paper load to below max mark
C0216 with platform reaching full upper height (confirmed by observation)	PS2 contaminated, misaligned, or failed; PS2 relay connector (CN406 or CN3) loose	Clean PS2 sensor faces; check PS2 relay connector and LUDB CN5 connector; perform PS2 I/O check at LUDB CN5-3
C0216 intermittent — clears on power cycle then returns after several prints or LCT loads	Intermittent connector — PS2 relay connector (CN406 or CN3) most likely; marginal M1 connector at CN3	Reseat all connectors in both M1 and PS2 signal paths; flex harness while testing; check relay connector specifically
C0216 immediately after LCT was serviced or LCT door was opened for paper loading	M1–LUDB CN3 connector displaced during service; PS2 physically misaligned; relay connector disturbed during paper loading	Reseat all connectors; confirm PS2 actuator flag is correctly positioned relative to sensor body
C0216 persists after confirmed-good M1 motor and fully seated connectors	LUDB ICP2 fuse blown; PS2 sensor failure; LUDB board failure	Check LUDB ICP2 conduction; perform PS2 I/O check; replace LUDB if ICP2 is intact and PS2 is confirmed good
C0216 with heavy or damp paper loaded	Paper weight or moisture causing excessive lift load; M1 marginal — adequate for standard paper but stalling under heavier stock	Remove paper; reload with fresh, standard 80 gsm paper below the max fill mark; test lift cycle

Step-by-Step Diagnostic and Repair Procedure

⚠️ Warning: Switch the machine OFF at the main power switch and disconnect the power cord before performing any connector checks, mechanical inspections, or component replacements inside the LCT unit. The LCT lift mechanism can generate significant force and may move unexpectedly when power is applied during a service mode motor check. Ensure hands and tools are clear of all moving parts before initiating any load check. Do not place fingers under the LCT paper platform when the machine is powered on.

Step 1 — Perform Initial Mechanical Checks Before Any Electrical Diagnosis

1. Open the LCT upper door and check the paper fill level against the maximum fill indicator on the LCT interior. Remove paper until the stack is at or below the maximum fill mark. Overfilling is a common cause of LCT lift failure, particularly when heavier paper stocks or damp paper from a warehouse environment are loaded.
2. Inspect the top of the paper stack for damaged, folded, or irregular sheets that may cause the stack to catch on the LCT side guides during lift. Remove any visibly damaged sheets from the top of the stack.
3. Check that all LCT side guides and the rear guide are correctly positioned for the paper size loaded. Guides that are set too tight will increase friction on the platform during lift and can stall M1 before PS2 is reached.
4. If access to the platform area is possible without disassembly, inspect beneath and around the platform for any torn paper, staple, or foreign object that could obstruct the platform’s upward travel. Use a flashlight for a thorough inspection. Remove any debris found.
5. Confirm the LCT is properly seated against the base machine and that the LCT interface connector is fully engaged. A partially connected interface will prevent the LUDB from communicating with the base machine’s MFPB, which can generate C0216 or prevent the lift sequence from being initiated.
6. Reload the LCT with a correctly filled stack of clean, standard paper. Reconnect power and observe the LCT on power-on. Listen for M1 initiating the lift-up cycle. If C0216 clears, document the root cause as a paper overload or debris obstruction and close.

Step 2 — Inspect and Reseat All Connectors in the M1 and PS2 Signal Paths

1. Power the machine OFF and disconnect the power cord.
2. Access the LUDB inside the LCT. The LUDB is typically located behind an access panel inside the LCT housing — refer to the service manual for the specific access procedure for your LCT model.
3. Locate and reseat the M1 motor connector at LUDB CN3:
   • Press the connector locking tab, fully withdraw the connector from LUDB CN3, and firmly reseat it until the locking tab clicks.
   • Trace the harness back to the motor-side connector at M1 itself and perform the same disconnect and reseat at the motor end.
   • Inspect all pins for bent contacts, pushed-back pins, toner contamination, or corrosion. The M1 connector carries both the motor drive voltage and the ON signal (LUDB CN3-4). Damage to any pin will prevent M1 from running or prevent confirmation of its operating state.
4. Locate and reseat the connectors in the PS2 upper limit sensor signal path:
   • Identify the relay connector in the PS2 path for your LCT model:
     • LU-204, LU-205, LU-207: relay connector CN406
     • LU-301, LU-302, LU-303: relay connector CN3
   • Reseat the connector at PS2 (at the sensor body), at the relay connector (CN406 or CN3), and at LUDB CN5. All three connection points in the signal chain must be fully seated for LUDB CN5-3 to receive the PS2 ON signal.
   • The relay connector is the most frequently overlooked connection point and the most common source of intermittent C0216. Pay particular attention to confirming this connector is fully clicked into its housing.
5. Reconnect power and initiate a lift cycle by loading the LCT and powering the machine on. If C0216 does not recur, the fault was a connector seating issue — document and close.

Step 3 — Inspect the M1 Drive Coupling and Lift Gear Train

1. Power the machine OFF and disconnect the power cord.
2. Access the M1 motor and its drive coupling to the lift gear train. Refer to the service manual for your LCT model for the M1 location and the access procedure required to reach the coupling.
3. Inspect the drive coupling between M1’s motor shaft and the lift gear train for cracks, deformation, or disengagement. Apply gentle torque by hand to the coupling joint to confirm it transmits force in both directions. A coupling that feels free to rotate relative to the motor shaft without resistance has separated or cracked.
4. Attempt to manually rotate the lift gear train input shaft by hand. It should turn with moderate, even resistance. Binding, sudden seizure at certain rotational positions, or free rotation with no resistance (indicating a gear tooth stripped) are all signs of a gear train problem that will prevent the platform from reaching PS2 regardless of M1’s condition.
5. Replace any damaged coupling or worn gear components. Refer to the service manual for the correct part numbers for your LCT model. After correction, reconnect power and test the lift cycle before proceeding to further electrical checks.

Step 4 — Inspect and Test PS2 (LCT Upper Limit Sensor)

1. Power the machine OFF and disconnect the power cord.
2. Locate PS2 within the LCT. It is typically positioned at the height corresponding to the top-sheet upper feed position along the LCT paper column. Refer to the service manual wiring diagram for your LCT model (location 4-G) for the exact position.
3. Inspect the PS2 sensor emitter and receiver faces for paper dust, toner buildup, or moisture residue that could prevent the optical beam from being interrupted by the platform actuator flag. Clean the sensor faces with a dry lint-free cloth or a cotton swab dampened with isopropyl alcohol — do not use solvents on the sensor body.
4. Inspect the PS2 actuator flag — the physical tab or reflector on the LCT platform or paper stack guide that enters the PS2 beam path when the platform reaches the upper limit position:
   • Confirm the flag is present, not broken, cracked, or bent.
   • Confirm the flag is aligned to enter the PS2 beam path correctly when the platform is at the upper limit position. A flag that has been bent away from the sensor by repeated platform travel will never actuate PS2 even when the platform is at the correct height.
   • Confirm the flag can travel freely through the beam path without catching on the sensor housing or adjacent structures.
5. With connectors reseated from Step 2, reconnect power and perform the PS2 I/O check in service mode:
   • Navigate to the I/O check function. Refer to the service manual for your model’s service mode navigation path.
   • Monitor the PS2 signal at LUDB CN5-3 (ON). The signal should be OFF when the platform actuator flag is clear of the PS2 beam and should switch to ON when the flag enters the beam path. Simulate actuation by carefully inserting a slip of paper into the sensor beam while monitoring the signal state.
   • If the signal does not change state when the beam is manually interrupted, PS2 is either failed electrically, contaminated beyond cleaning, or its signal path to LUDB CN5 has an open circuit. Confirm all connectors in the PS2 path are fully seated before condemning the sensor.
6. If PS2 is confirmed faulty after harness verification and cleaning, replace PS2. Refer to the service manual for the correct sensor part number for your LCT model. After replacement, confirm the new sensor actuates correctly via the I/O check before reassembling the LCT.

Step 5 — Inspect the LCT Harness for Damage

1. Trace the complete harness run from M1 to LUDB CN3 and from PS2 through its relay connector (CN406 or CN3) to LUDB CN5.
2. Pay particular attention to any section of the harness that passes through a panel cutout, over a sharp edge, or near the LCT door hinge or paper loading mechanism. The LCT door is opened frequently for paper loading, and harness sections near the door pivot are particularly vulnerable to repeated flexing, which causes conductor fatigue and eventual open-circuit failure.
3. Look for sections of the harness where the insulation has worn through, where the harness has been caught and pulled tight, or where heat or toner contamination has caused the insulation to become brittle.
4. Gently flex any suspect section of harness while observing for intermittent signal behavior or visible cracking of the insulation.
5. If harness damage is confirmed, replace the harness. Refer to the service manual for the correct harness part number and routing instructions. Do not repair damaged harnesses with adhesive tape or splice connectors in a moving paper feed environment.

Step 6 — Perform the M1 Motor Load Check via Service Mode

1. With all connectors confirmed seated, the mechanical path clear, and PS2 verified via I/O check, reconnect power and enter Service Mode.
2. Navigate to the motor load check or operation check function. Refer to the service manual for your specific bizhub model’s service mode navigation path.
3. Execute the M1 load check using the following parameters:
   • LU-207 / LU-302 (bizhub C458/C558/C658, 458e/558e/658e, C450i/C550i/C650i, 308e/368e, C258/C308/C368): Check code: 23, Multi code: 8, Control signal: LUDB CN3-4 (ON), Wiring diagram location: LU-207/LU-302 3-G.
   • LU-205 / LU-303 (bizhub C750i, C759): Check code: 23, Multi code: 8, Control signal: LUDB CN3-4 (ON), Wiring diagram location: LU-205/LU-303 3-G.
   • LU-204 / LU-301 (bizhub C452/C552/C652/C754 era, 554e/654e, C454/C554): M1 operation check, Control signal: LUDB CN3-4 (ON), Wiring diagram location: LU-204/LU-301 3-G. Refer to service manual for check code and multi code values for this LCT generation.
4. During the load check, observe whether M1 runs smoothly and whether the LCT platform begins to visibly rise. Listen for the motor running sound and observe the platform through the LCT upper door. An M1 that does not start, runs for only a moment then stops, runs with an audible grinding noise, or causes the load check to report a drive error has a confirmed internal failure — proceed to Step 7.
5. If M1 runs correctly during the load check but C0216 appeared in normal operation, the fault is most likely intermittent — a marginal connector contact that fails under vibration during normal operation, or a PS2 detection issue that only manifests under actual platform travel speed. Re-examine the relay connector and PS2 alignment carefully before concluding the diagnosis.

Step 7 — Check LUDB ICP2 Fuse Conduction

On LU-204 and LU-301 variants (and potentially other LCT generations — refer to the service manual), the LUDB contains a fuse designated ICP2 that protects the M1 power supply circuit. A blown ICP2 will prevent M1 from receiving its drive voltage regardless of the LUDB’s output command, producing C0216 with no motor activity even when the M1 motor itself is electrically sound.

1. Power the machine OFF and disconnect the power cord.
2. Access the LUDB and locate ICP2 on the board. Refer to the service manual for the LUDB board layout diagram showing the ICP2 position for your LCT model.
3. Test ICP2 conduction with a multimeter in continuity mode. A blown ICP2 will show open circuit (no continuity). If ICP2 is blown, replace it with an identical rated fuse or ICP device. Do not substitute a higher-rated fuse.
4. Before reassembling and retesting, investigate why ICP2 blew. A blown protective fuse indicates the circuit experienced an overcurrent condition — typically caused by a previous M1 winding short, a harness fault that caused a drive line short, or a mechanical seizure that caused M1 to draw excessive current. If the root cause of the overcurrent is not addressed, the replacement ICP2 will blow again on the next lift attempt.
5. After replacing ICP2 and addressing any overcurrent root cause, reconnect power and test the M1 load check before inserting a paper load for a full lift cycle test.

Step 8 — Replace M1 (LCT Lift-Up Motor)

1. Power the machine OFF and disconnect the power cord.
2. Remove M1 from the LCT per the motor removal procedure in the service manual for your LCT model. Experienced field technicians note that M1 can be physically challenging to access in some LCT configurations — refer to the service manual for the recommended approach to the motor mounting screws and bracket, and plan for adequate access time. Photograph the motor orientation, coupling engagement, and harness routing before removal.
3. Install the replacement M1:
   • Confirm the motor shaft coupling engages correctly with the lift gear train input shaft.
   • Fit and tighten all motor mounting screws.
   • Route the motor harness as in the original installation, without pinch points or tension.
4. Reconnect the M1 harness to LUDB CN3, confirming the connector is fully locked.
5. Reconnect power and perform the M1 load check from Step 6 with the replacement motor before inserting any paper, to confirm correct electrical operation before a full mechanical load is applied.
6. Load the LCT with a correctly filled paper stack and initiate a full lift cycle. Print a minimum of 20 sheets from the LCT at normal speed to confirm stable lift operation and consistent paper feeding. Confirm C0216 does not recur across multiple print cycles before returning the machine to service.

Step 9 — Replace the LUDB (LU Drive Board)

If a confirmed-good M1 motor, an intact LUDB ICP2 fuse, a confirmed-good PS2 sensor, and fully seated connectors throughout all signal paths still produce C0216, the fault is isolated to the LUDB itself. LUDB failure — typically of the M1 driver output stage or the PS2 input circuit — is less common than M1 motor failure but is documented across all LCT generations and is the final replacement step.

1. Power the machine OFF and disconnect the power cord.
2. Remove the LUDB from the LCT per the board removal procedure in the service manual. Photograph all connector positions before removal to ensure correct reinstallation of the replacement board.
3. Install the replacement LUDB. Reconnect all harnesses and connector blocks in the same positions as the original board.
4. Reconnect power and perform the M1 load check and PS2 I/O check to confirm the replacement LUDB drives M1 and reads PS2 correctly before proceeding to a full lift cycle test.
5. Load the LCT with a correctly filled paper stack, initiate the lift cycle, and print a minimum of 20 sheets from the LCT to confirm C0216 does not recur before returning the machine to service.

Service Mode Reference — M1 and PS2 Checks

The following table consolidates the documented service mode check parameters for M1 and PS2 by LCT generation. Always cross-reference with the specific service manual for your bizhub model and LCT variant — check code and multi code assignments may vary between firmware revisions.

LCT Model	Component	Check Code	Multi Code	Control Signal	Wiring Diagram Ref.
LU-207 / LU-302	M1 (LCT lift-up motor)	23	8	LUDB CN3-4 (ON)	LU-207/LU-302 3-G
LU-207 / LU-302	PS2 (LCT upper limit sensor)	I/O check	—	LUDB CN5-3 (ON)	LU-207/LU-302 4-G
LU-205 / LU-303	M1 (LCT lift-up motor)	23	8	LUDB CN3-4 (ON)	LU-205/LU-303 3-G
LU-205 / LU-303	PS2 (LCT upper limit sensor)	I/O check	—	LUDB CN5-3 (ON)	LU-205/LU-303 4-G
LU-204 / LU-301	M1 (LCT lift-up motor)	Refer to service manual	Refer to service manual	LUDB CN3-4 (ON)	LU-204/LU-301 3-G
LU-204 / LU-301	PS2 (LCT upper limit sensor)	I/O check	—	LUDB CN5-3 (ON)	LU-204/LU-301 4-G
LU-204 / LU-301	LUDB ICP2 fuse	Conduction check	—	—	Refer to LUDB board layout in service manual

ℹ️ Relay connector reference summary: PS2 → relay CN406 → LUDB CN5 applies to LU-204, LU-205, and LU-207 units. PS2 → relay CN3 → LUDB CN5 applies to LU-301, LU-302, and LU-303 units. When machines are fitted with either of two compatible LCT options (e.g. LU-207 or LU-302), always identify the actual unit installed before performing the PS2 path connector check.

Understanding the C020x / C0216 Lift Error Family

C0216 belongs to the lift-up failure group. Understanding the full error family prevents confusion when diagnosing which tray or unit is actually at fault:

• C0202 — Tray 1 lift-up failure — base machine tray; controlled by PRCB (not PCCB or LUDB). Components: Refer to service manual for your base model.
• C0204 — Tray 2 lift-up failure — base machine tray; controlled by PRCB or MFPB depending on model family.
• C0206 — Tray 3 lift-up failure — optional paper feed cabinet tray; controlled by PCCB and MFPB. Components: M113, PS116, PCCB, MFPB.
• C0208 — Tray 4 lift-up failure — optional paper feed cabinet tray; controlled by PCCB. Components: M123, PS126, PCCB.
• C0216 — LCT lift-up failure — this article. External Large Capacity Unit; controlled by LUDB inside the LCT itself. Components: M1, PS2, LUDB.
• C0214 — LCT shift failure — exclusively relevant to LCT models with a lateral paper stack shifting mechanism (typically LU-214/LU-414 era and PC-414/PC-415/PC-416 high-capacity cassette units). C0214 is a horizontal shifter position fault, not a vertical lift fault, and involves different motor and sensor designations (M133, PS138, PS139) — it is diagnostically unrelated to C0216 despite appearing adjacent in the code list.

If C0216 appears together with C0206 or C0208, these are independent faults on different physical units. They do not share control boards and should be diagnosed separately. C0216 combined with a paper feed communication error (C0002) suggests the LCT interface connection to the base machine has been disrupted — check the LCT interface cable and connector at both the LCT and base machine ends before beginning any LUDB-level diagnosis.

Rank B Reset Procedure

C0216 is classified as Rank B. The machine halts and will not resume LCT printing until the fault is resolved. A main power off/on cycle may clear the error display temporarily — for example, if a loose connector reseated under its own spring tension — but C0216 will return on the next lift attempt if the root cause has not been corrected.

1. After completing the repair, power the machine OFF using the main power switch.
2. Wait at least 10 seconds for all internal circuits to discharge and the LCT lift mechanism to fully reset to the lowered position.
3. Reload the LCT with a correctly filled paper stack at or below the maximum fill mark, using standard flat, undamaged paper.
4. Power the machine ON and listen closely during the startup sequence for the sound of M1 initiating the lift-up cycle as the machine completes its startup routine.
5. Confirm that C0216 does not appear during startup or after the first LCT feed attempt.
6. Print a minimum of 20 to 30 continuous sheets from the LCT at normal speed to validate stable lift operation across multiple feed cycles — including multiple incremental lifts as the paper stack is consumed — before returning the machine to service.

Preventive Maintenance Recommendations

• Carry M1 as van stock on all LCT-equipped sites — M1 lift motor failure is the most common cause of C0216 across all LCT generations and is confirmed by extensive field experience. On sites where the LCT is the primary paper source and is refilled multiple times per day, M1 is subject to significant cumulative mechanical stress. Having a replacement motor available eliminates a return visit for what is typically a confirmed motor failure at first call.
• Clean PS2 at every PM visit on LCT-equipped machines — the PS2 sensor accumulates paper dust and toner on its optical faces progressively with each lift cycle. A 30-second cleaning of PS2’s emitter and receiver faces during PM eliminates one of the most insidious causes of intermittent C0216 — a sensor that functions under cool conditions but fails to detect the platform flag reliably once paper dust has partially blocked the beam.
• Reseat the PS2 relay connector at every PM visit — the relay connector (CN406 on LU-204/LU-205/LU-207; CN3 on LU-301/LU-302/LU-303) is the most commonly overlooked connection point in the LCT and the most common source of intermittent C0216. A 15-second connector reseat during PM prevents the gradual vibration-induced loosening that eventually produces a C0216 call between scheduled visits.
• Train LCT users on correct paper loading procedure — users loading paper above the maximum fill mark, loading paper without fanning the stack first, or loading damp paper from uncontrolled storage environments all increase M1’s mechanical load and accelerate motor wear. Brief user training on correct LCT paper loading procedure extends M1 service life and reduces C0216 incidence.
• Inspect the LCT platform and lift path during every paper jam clearance visit — whenever a jam involving the LCT is cleared, remove the paper and inspect beneath the platform and along the full lift path before reloading. Paper fragments beneath the platform are a common trigger for C0216 on the next print job and are entirely preventable with a thorough post-jam inspection.
• Check the M1 drive coupling and lift gear train during major PM on high-volume LCT sites — on machines where the LCT is filled several times per day, include a visual inspection of the M1 coupling and lift gear train during major PM intervals. A fatigued coupling identified during PM prevents an unplanned C0216 call during production hours.

Professional Technician Summary

Error Code C0216 on Konica Minolta bizhub machines fitted with an optional Large Capacity Unit is a position-feedback fault: the LUDB detected that PS2 did not confirm the LCT paper stack reached the upper feed height within the allowed time after M1 was commanded to lift. The diagnostic architecture of C0216 differs from the standard tray lift codes (C0202–C0208) in one key respect — the LCT has its own dedicated control board (the LUDB) housed inside the unit itself, making it a self-contained diagnostic scope that does not require access to the base machine’s MFPB or PCCB for the primary investigation steps.

M1 lift motor failure is the most frequently confirmed root cause of C0216 across all LCT generations. The motor operates under high and continuous mechanical load — lifting a multi-kilogram paper stack from the fully loaded position to the feed height every time the LCT is loaded or the machine wakes from sleep — and accumulates fatigue faster than other paper path motors. If the LCT makes no sound whatsoever on power-on or tray insertion after the M1 connector at LUDB CN3 has been confirmed seated, M1 internal failure should be presumed and the load check used to confirm before ordering the replacement.

When C0216 is intermittent rather than consistent, focus first on the PS2 relay connector (CN406 on older LCT generations; CN3 on newer ones) — this is the most frequently overlooked connector in the LCT signal path and the most common explanation for a C0216 that clears on power cycle then returns after a few LCT loads. LUDB replacement is the correct final step only after M1, PS2, LUDB ICP2, and all connectors and harnesses in the LCT have been confirmed or addressed.