Code :

Code: 938.01
Description: 938.01 Electronics Hardware Error The system board is not the correct level.
Remedy: • POR the printer. • If the error persists, replace the system board.

Code: 938.02
Description: Electronics Hardware Error A system board timeout error has occurred.
Remedy: • POR the printer. • If the error persists, replace the system board.

Code: 938.09
Description: Electronics Hardware Error The printhead PLL failed to achieve lock.
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 F13 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”. Did the printhead motor pass the test? Replace the printhead. See “Printhead removal, installation, and alignment”. Replace the system board. See “System board removal”.

Code: 938.10
Description: Electronics Hardware Error The humidity sensor failed.
Remedy: • POR the printer. • If the error message persists, go to “System board removal”.

Code: 938.11...938.14
Description: Electronics Hardware Error A cartridge sensor failed.
Remedy: 1 Turn the printer off and open the system board shield. Check the cables in the indicated connectors for proper connection to the system board. The cables are interchangeable on the terminals, so check all four cables for any 133.xx error. Are the cables properly connected? Go to step 2. Reseat the cable. 2 Check the cables in the indicated connectors for proper connection to the system board. 133.01 or 133.05 Black—D (JCMKM1) 133.02 or 133.05 Cyan—C (JCMCY1) 133.03 or 133.05 Magenta—D (JCMKM1) 133.04 or 133.05 Yellow—C (JCMCY1) Are the cables properly connected? Go to step 3. Reseat the cable. 3 Check the cables in connectors JCMKM1 and JCMCY1 for damage, and then remove all four cartridges and check the other ends of the cables connected to the sensors on the memory blocks. 133.01 or 133.05 Black—B (JCMKM1) 133.02 or 133.05 Cyan—A (JCMCY1) 133.03 or 133.05 Magenta—B (JCMKM1) 133.04 or 133.05 Yellow—A (JCMCY1) Is either cable damaged? Replace the cable. Go to step 3. 4 Replace the indicated cartridge memory block. See “Cartridge memory block removal”. Did this fix the problem? Problem solved. Replace the system board. See “System board removal”.