• Code: 03-420, 03-421, 03-422
• Description: Tray 2 Paper Information Mismatch
• Causes: 03-420 The machine has detected a tray 2 paper colour, type or size mismatch during a print job. 03-421 The machine has detected a tray 2 paper type mismatch during a print job. 03-422 The machine has detected a tray 2 paper size mismatch during a print job.
• Remedy: 1. If the fault is present when printing, check that the print driver and machine tray information are correct. 2. Go to GP 4 System Administration Tools. Check that the relevant tray paper type, colour and size settings are correct.

• Code: 03-450
• Description: Bypass Tray Paper Information Mismatch
• Causes: The machine has detected a bypass tray paper colour, type or size mismatch during a print job.
• Remedy: 1. If the fault is present when printing, check that the print driver and machine tray information are correct. 2. Go to GP 4 System Administration Tools. Check that the relevant tray paper type, colour and size settings are correct.

• Code: 03-510, 03-520, 03-558, 03-559
• Description: Foreign Device Interface Fault
• Causes: 03-510 The foreign device interface is not detected. 03-520 The foreign device interface is not active. 03-558 The foreign device interface is not active. 03-559 The foreign device interface is no longer active.
• Remedy: 1. If there is credit in the foreign device, check the wiring between the foreign device and the foreign device interface PWB . 2. Check that the foreign device interface PWB is securely connected to CN13 the Main PWB. 3. If necessary: a. Install a new foreign device interface PWB . b. Perform OF7 Main PWB Check RAP.

• Code: 03-600
• Description: Memory Failure
• Causes: The machine has detected a memory access failure.
• Remedy: 1. Switch off the machine, then switch on the machine. 2. Remove, then reinstall the memory DIMM . 3. If necessary: a. Install a new memory DIMM . b. Perform OF7 Main PWB Check RAP.

• Code: 03-800
• Description: Check HDD
• Causes: The machine has detected a fault with the hard disk drive (HDD).
• Remedy: 1. Switch off the machine, then switch on the machine. 2. Check the wiring between the hard disk drive and the Main PWB. 3. If necessary: a. Install a new hard disk drive . b. Perform OF7 Main PWB Check RAP.

• Code: 03-900
• Description: Main PWB to GUI Communications Fault
• Causes: A user interface to main PWB communications error has been detected.
• Remedy: 1. Switch off the machine, then switch on the machine. 2. Check the wiring between CN6 on the Main PWB and CN2 on the UI PWB. 3. Check the wiring between CN10 on the Main PWB and CN11 on the UI PWB. 4. Check the wiring between CN11 on the Main PWB and CN1 on the UI PWB. 5. If necessary: a. Install a new UI PWB . b. Perform OF7 Main PWB Check RAP.

• Code: 03-940
• Description: Main PWB to Tray 2 Communications Fault
• Causes: A main PWB to tray 2 PWB communications error has been detected.
• Remedy: 1. Switch off the machine, then switch on the machine. 2. Check the wiring between CN33 and CN34 on the Main PWB and CN7 on the Tray 2 PWB. 3. If necessary: a. Install new components: • Tray 2 connector . • Tray 2 PWB . b. Perform OF7 Main PWB Check RAP.

• Code: 03-970
• Description: Main PWB Watchdog Detects Software Lockup
• Causes: The main PWB software has stopped responding.
• Remedy: 1. Switch off the machine, then switch on the machine. 2. Reload the software, GP 6. 3. Perform OF7 Main PWB Check RAP.