• Code: 938.22
• Description: Electronics Hardware Error A printhead failure error occurred.
• Remedy: 1 View the Event Log: 1. Turn off the printer, press and hold 3 and 6 and turn on the printer. 2. Select EVENT LOG > Display Log. Has a 110.xx error occurred three times or more? Replace the printhead. See “Printhead removal, installation, and alignment”. Go to step 2. 2 Turn the printer off, and open the system board shield. Check the printhead cables (A) in connectors JMM1, JPH1, and JPH2 for proper connection to the system board. Are the cables properly connected? Go to step 3. Reseat the cables. 3 Check the printhead cables in connectors JMM1, JPH1, and JPH2 for damage. Are the cables damaged? Replace the printhead. See “Printhead removal, installation, and alignment”. Go to step 4. 4 Measure the resistance across fuse F11 on the system board. Is the fuse blown? Replace the system board. See “System board removal”. Go to step 5. 5 Perform the printhead verification to check whether the new printhead solves the problem. See “Printhead verification”. Does the printhead motor pass the test? Replace the printhead. See “Printhead removal, installation, and alignment”. Replace the system board. See “System board removal”.

• Code: 938.23
• Description: Electronics Hardware Error An autocomp motor error occurred.
• Remedy: 1 Turn the printer off, and open the system board shield. Check the cable in connector JTRAY1 (A) for proper connection to the system board. Is the cable properly connected? Go to step 2. Reseat the cable. 2 Check the cable for damage. Is the cable damaged? Replace the Tray 1 machine side cable. See “Autocomp W2W cable”. Go to step 3. 3 Remove the standard media tray. Check the cable (A) from the paper pick mechanism assembly to the printer. Is the cable properly connected? Go to step 4. Reseat the cable. 4 Remove the paper pick mechanism assembly. See “Paper pick mechanism assembly removal”. Does the error reoccur? Replace the system board. See “System board removal”. Problem solved.

• Code: 938.24
• Description: Electronics Hardware Error A paper path redrive motor failure error occurred.
• Remedy: 1 Turn the printer off, and open the system board shield. Check the cable in connector JRDR1 for proper connection to the system board. Is the cable properly connected? Go to step 2. Reseat the cable. 2 Replace the redrive motor. See “Redrive motor removal”. Does the error reoccur? Replace the system board. See “System board removal”. Problem solved.

• Code: 938.25, 938.26
• Description: Electronics Hardware Error A printhead failure error occurred.
• Remedy: 1 View the Event Log: 1. Turn off the printer, press and hold 3 and 6 and turn on the printer. 2. Select EVENT LOG > Display Log. Has a 110.xx error occurred three times or more? Replace the printhead. See “Printhead removal, installation, and alignment”. Go to step 2. 2 Turn the printer off, and open the system board shield. Check the printhead cables (A) in connectors JMM1, JPH1, and JPH2 for proper connection to the system board. Are the cables properly connected? Go to step 3. Reseat the cables. 3 Check the printhead cables in connectors JMM1, JPH1, and JPH2 for damage. Are the cables damaged? Replace the printhead. See “Printhead removal, installation, and alignment”. Go to step 4. 4 Measure the resistance across fuse F11 on the system board. Is the fuse blown? Replace the system board. See “System board removal”. Go to step 5. 5 Perform the printhead verification to check whether the new printhead solves the problem. See “Printhead verification”. Does the printhead motor pass the test? Replace the printhead. See “Printhead removal, installation, and alignment”. Replace the system board. See “System board removal”.

• Code: 938.27, 938.29, 938.30
• Description: 938.27 Electronics Hardware Error A weather station failure occurred. 938.29–938.30 Electronics Hardware Error A weather station failure occurred.
• Remedy: 1 Turn the printer off, and open the system board shield. Check the cable in connector JFSRD1 for proper connection to the system board. Is the cable properly connected? Go to step 2. Reseat the cable. 2 Check the cable for damage. Is the cable damaged? Replace the thermistor and redrive cable. See “Fuser thermistor removal”. Go to step 3. 3 Remove the fuser, and check the connection of the thermistor and redrive cable (A). See “Fuser assembly removal”. Is the cable properly connected? Go to step 4. Reseat the cable. 4 Replace the fuser thermal guide assembly. See “Fuser thermistor removal”. Does the error reoccur? Replace the system board. See “System board removal”. Problem solved.

• Code: 938.28
• Description: Electronics Hardware Error A remote weather station failure occurred.
• Remedy: 1 Turn the printer off, and open the system board shield. Check the cable in connector JCCT2 (weather station compensation thermistor) for proper connection to the system board. Is the cable properly connected? Go to step 2. Reseat the cable. 2 Check the cable for damage. Is the cable damaged? Replace the weather station compensation thermistor. See step 3. Go to step 3. 3 Replace the weather station compensation thermistor: Clip the cable tie to remove the thermistor from the LVPS. Does the error reoccur? Replace the system board. See “System board removal”. Problem solved.

• Code: 938.31
• Description: Electronics Hardware Error A printhead failure error occurred.
• Remedy: 1 View the Event Log: 1. Turn off the printer, press and hold 3 and 6 and turn on the printer. 2. Select EVENT LOG > Display Log. Has a 110.xx error occurred three times or more? Replace the printhead. See “Printhead removal, installation, and alignment”. Go to step 2. 2 Turn the printer off, and open the system board shield. Check the printhead cables (A) in connectors JMM1, JPH1, and JPH2 for proper connection to the system board. Are the cables properly connected? Go to step 3. Reseat the cables. 3 Check the printhead cables in connectors JMM1, JPH1, and JPH2 for damage. Are the cables damaged? Replace the printhead. See “Printhead removal, installation, and alignment”. Go to step 4. 4 Measure the resistance across fuse F11 on the system board. Is the fuse blown? Replace the system board. See “System board removal”. Go to step 5. 5 Perform the printhead verification to check whether the new printhead solves the problem. See “Printhead verification”. Does the printhead motor pass the test? Replace the printhead. See “Printhead removal, installation, and alignment”. Replace the system board. See “System board removal”.

• Code: 950.00 ... 950.29
• Description: NVRAM Failure A mismatch occurred between the OP panel NVRAM and the system board NVRAM.
• Remedy: 1 Has the OP panel UICC card been replaced recently? Replace the operator panel assembly with a new, and not previously installed, UICC card. See “OP panel UICC card removal”. Go to step 2. 2 Has the system board been replaced recently? Replace the system board with a new, and not previously installed, system board. See “System board removal”. Go to step 3. 3 Turn the printer power off for ten or more seconds. Then turn the printer back on (POR the printer). Is the error gone, and can the printer print? Problem solved. Go to step 4. 4 Clear the NVRAM of the printer: 1. Turn the printer power off. 2.With the printer off, press and hold 6, 7 and 8 on the keypad. 3. Turn the printer on. 4.When Restoring Factory Defaults appears, release the buttons. Note: If the printer locks up on the Restoring Factory Defaults, wait two minutes, and then turn the printer power off. After ten seconds or more, turn the printer power back on without holding down any buttons. Does the error message still appear? Go to step 5. Problem solved. 5 Replace the OP panel UICC card. See “OP panel UICC card removal”. Does the error message still appear? Replace the system board. See “System board removal”. Problem solved.