Sharp shows these as a main code and a sub code joined by a dash, for example H4-00. The main code is a letter and a number, or two letters, and it tells you the area: H for fusing, F2 for toner and process, C for charging and transfer, L for motors and the scanner, U for memory and options. Write the whole code down before you do anything else.
Many Sharp codes are held in memory after the fault is fixed and have to be cancelled in simulation mode, Sharp's service mode. That is why switching off and on will not clear a fusing code, a tray lift code or a U2 memory code, even when it looks like it should.
Before you call
- Write down the full code, both parts, for example H4-00, and what the machine was doing when it appeared.
- Switch off at the main power switch behind the front cover, wait a minute, and switch back on. Some communication codes clear this way.
- If it comes back, or it is a fusing code starting with H, stop there. Repeated restarts will not fix the cause, and the fusing area runs hot.
- Call us with the code and the model. The code tells the technician which parts to bring.
Sharp codes by family
H2 to H7: fusing
The fusing unit that melts the toner onto the page, its heater lamps and its thermistors.
| Code | What it means | Who clears it |
|---|---|---|
| H2-00, H2-01, H2-02 | A main or sub thermistor in the fusing unit reads open, so the machine cannot measure the fuser temperature. | A technician |
| H2-03, H2-05, H2-06 | A compensation or edge thermistor in the fusing unit reads open. | A technician |
| H3-00 | The fusing unit went over temperature at the upper main thermistor. Held until a technician cancels it. | A technician |
| H3-01, H3-02 | The fusing unit went over temperature at the lower main or upper sub thermistor. | A technician |
| H4-00 | The fusing unit did not reach its working temperature. Often the heater lamp, the thermostat, a thermistor or an interlock switch. | A technician |
| H4-01, H4-02 | The fusing unit ran too cold at the lower main or upper sub thermistor. | A technician |
| H4-30, H4-32 | A fusing thermistor reading does not match what the heater lamp should be doing, often because the lamp is not lighting. | A technician |
| H5-01 | Five jams in a row at the fusing exit, so the machine locks. Usually paper left inside, the exit sensor, or how the fusing unit is seated. | A technician |
| H7-10, H7-12 | The fusing unit could not recover its temperature after running cold. | A technician |
F2 and EE: toner, developer and process control
The toner cartridges, the developing units and the sensors that keep the image density right.
| Code | What it means | Who clears it |
|---|---|---|
| EE-EL | The automatic toner density setting failed with too much toner, usually after new developer. | A technician |
| EE-EU | The automatic toner density setting failed with too little toner. | A technician |
| EE-EC | The automatic toner density setting finished out of range. | A technician |
| F2-40, F2-41, F2-42, F2-43 | Toner density sensor fault in the black, cyan, magenta or yellow developing unit. | A technician |
| F2-64, F2-65, F2-66, F2-67 | Toner supply failed for one colour. The toner motor, the sensor, the cartridge or the toner pipe. | A technician |
| F2-70, F2-71, F2-72, F2-73 | The machine does not recognise the toner cartridge as the right one for it. | A technician |
| F2-74, F2-75, F2-76, F2-77 | The chip on a toner cartridge could not be read. | A technician |
C1 and C4: charging and transfer
The main chargers on the drums, and the high voltage that moves the image to the belt and then to the paper.
| Code | What it means | Who clears it |
|---|---|---|
| C1-10 | The main charger for black has an open or short circuit. The charger, its wiring or the developing unit. | A technician |
| C1-14 | The main charger for colour has an open or short circuit. | A technician |
| C1-15, C1-16, C1-40, C1-41 | Fault in the high voltage board or circuit that feeds the main chargers. | A technician |
| C4-00, C4-05 | PTC unit high voltage fault. The PTC unit is a replaceable part. | A technician |
| C4-20, C4-25 | Primary transfer high voltage fault, usually the primary transfer unit or its wiring. | A technician |
| C4-30, C4-31 | Secondary transfer high voltage open or shorted. | A technician |
E7 and L6: laser writing
The laser unit, which Sharp calls the LSU, that writes the image onto the drums.
| Code | What it means | Who clears it |
|---|---|---|
| L6-10 | The polygon motor in the laser unit has failed. | A technician |
| E7-20, E7-21, E7-22, E7-23 | The laser beam was not detected for black, cyan, magenta or yellow. | A technician |
| F2-49 | The laser unit temperature sensor is out of range or has failed. | A technician |
L4 and L8: motors, fans and power
The drive motors, cooling fans and mains power sensing.
| Code | What it means | Who clears it |
|---|---|---|
| L4-02 | The paper feed motor has failed. | A technician |
| L4-03 | The fusing motor has failed. | A technician |
| L4-06 | The transfer unit did not lift into or out of position. | A technician |
| L4-17, L4-18 | The drum motor for black or colour has locked. | A technician |
| L4-32, L4-35, L4-50, L4-51 | A cooling fan has stopped, on the power supply, the fusing unit or the process section. | A technician |
| L8-01, L8-02 | The mains power signal is missing or its frequency is out of range. The power unit or the supply. | A technician |
L1, L3, E6, E7 and U5: scanner and document feeder
The scanner, and the reversing or duplex single pass feeder on top.
| Code | What it means | Who clears it |
|---|---|---|
| L1-00, L3-00 | The scanner mirror unit did not move out or return. On a machine that has been moved, check the transport lock screw is out. | A technician |
| E7-10, E7-11, E7-14 | The scanner could not calibrate its black or white level, or its CCD board has a fault. | A technician |
| E6-10, E6-11, E6-14 | The same calibration fault in the part of the duplex feeder that reads the back of the page. | A technician |
| U5-00 | Communication lost with the document feeder. A restart may clear it. | A restart may clear it |
| U5-30, U5-31 | The document feeder tray did not lift or lower. | A technician |
F3 and U6: paper trays and feed options
The trays in the machine, the paper feed desk under it and the large capacity tray.
| Code | What it means | Who clears it |
|---|---|---|
| F3-12, F3-22 | Tray 1 or tray 2 did not lift. Check for a scrap of paper under the tray. Held until a technician cancels it. | A technician |
| U6-00, U6-20 | Communication lost with the paper feed desk or the large capacity tray. A restart may clear it. | A restart may clear it |
| U6-01, U6-02 | A tray in the paper feed desk did not lift. | A technician |
| U6-09, U6-23 | The large capacity tray did not lift or lower. | A technician |
F1: finishers
The inner finisher, the finishers and saddle stitch finisher, and the punch units.
| Code | What it means | Who clears it |
|---|---|---|
| F1-00 | Communication lost between the finisher and the machine. | A technician |
| F1-10 | The staple motor or the stapling operation has a fault. | A technician |
| F1-15 | The finisher exit tray lift motor has a fault. | A technician |
| F1-30, F1-32 | Communication lost between the finisher and its saddle unit or punch unit. | A technician |
| F1-37, F1-38 | Backup memory error on the finisher or punch board. A restart may clear it. | A restart may clear it |
E7: controller and storage
The main board, image memory, hard drive and SSD.
| Code | What it means | Who clears it |
|---|---|---|
| E7-03 | The hard drive has failed or is not connected properly. | A technician |
| E7-A7 | The mSATA SSD has failed or is not connected properly. | A technician |
| E7-90 | Communication lost between the main controller board and the engine board. | A technician |
| E7-01, E7-92, E7-93 | Image data could not be processed, often a memory or storage fault. | A technician |
| E7-C0, E7-C1 | Security board access or check error. Switching off and on may clear it. | A restart may clear it |
U1, U2, A0 and PC: memory, firmware and counters
The stored settings, counters, backup battery and firmware.
| Code | What it means | Who clears it |
|---|---|---|
| U1-01 | The backup battery on the main board is low and needs replacing. | A technician |
| U2-00, U2-11 | The settings memory, which holds the counters, could not be read or failed its check. | A technician |
| U2-30 | The manufacturing number stored on the main board and the engine board do not match, typically after a board replacement. | A technician |
| U2-40 | A storage area on the SSD has a file error. Switching off and on lets the machine restore it from the hard drive backup. | A restart may clear it |
| A0-01, A0-02 | The firmware on the engine or main board is damaged, often after a firmware update was interrupted. | A technician |
| A0-20, A0-21, A0-22 | The firmware and the stored data versions do not match. | A technician |
| PC | The machine is set to use a personal counter, and it cannot see one. | A technician |
Messages that are not faults
A toner cartridge is running out. Not a fault: have a new one ready. On a service agreement, order it from the customer portal.
A cartridge is empty. When black runs out the machine stops printing. When a colour runs out it can still print in black and white until you replace it.
The waste toner box is nearly full. The machine keeps printing for now, but stops when it is full, so replace it soon.
The machine's maintenance counter has reached its set count. Book a service. Depending on how it is set, it may keep printing or stop.
A wear part has reached its page count: TK1 is the primary transfer unit, FK1 the fusing belt, DK the black drum and VK the black developer. Book a service so it is fitted before it causes a fault.
Follow the panel to the jam and clear it gently. The machine logs a jam code each time, which tells a technician which sensor saw it, so call if it keeps happening in the same place.
Need it fixed?
Call 1300 922 260 or book online and quote the full code. In Brisbane, see Sharp repairs in Brisbane. For toner and parts, see our Sharp page.
Common questions
What is a trouble code on a Sharp?
It is the machine reporting a fault it has found in itself. The main code, such as H4, says which area of the machine the fault is in, and the sub code after the dash narrows it to the exact condition.
How do I clear a trouble code on a Sharp?
Switch the machine off at the main power switch, wait a minute, and switch it back on. That clears some communication codes. Fusing codes, tray lift codes and most memory codes are held by the machine until a technician fixes the cause and cancels them in simulation mode.
What does H4-00 mean on a Sharp?
The fusing unit did not reach its working temperature. It is a safety code, so it will not clear with a restart. The usual causes are the heater lamp, the thermostat, a thermistor, or an interlock switch.
Why does my Sharp keep showing the same trouble code?
A code that returns after a restart means the cause is still there, and many Sharp codes stay stored until they are cancelled in simulation mode. Write down the full code and book a technician.
Checked against the Sharp MX-3050N, MX-3060N and MX-3070N series service manual, which covers the MX-3550N to MX-4070N as well. Other Sharp MX machines use the same code families, though individual codes vary a little between models. DSA is an independent service provider. Sharp is a trademark of its owner and is used here only to describe the machines we service.