Code :

Code: 934
Description: Color Drum Sensor Error
Remedy: 1 Clean the color drum sensor LED. Did this fix the problem? Problem solved. Go to step 2 2 Swap the yellow photo developer with a different color photo developer. Did this fix the problem? Replace the photo developer that called the error. Go to step 3. 3 Is connector CN2 on the printer controller board connected properly? Replace the sub frame assembly. Plug the connector in securely. 4 Did replacing the sub frame fix the problem? Problem solved. Replace the printer controller board.

Code: 935
Description: Black Drum Sensor Error
Remedy: 1 Clean the black drum sensor LED. Did this fix the problem? Problem solved. Go to step 2 2 Swap the black photo developer with a different color photo developer. Did this fix the problem? Replace the photo developer that called the error. Go to step 3. 3 Is connector CN2 on the printer controller board connected properly? Replace the sub frame assembly. Plug the connector in securely. 4 Did replacing the sub frame fix the problem? Problem solved. Replace the printer controller board

Code: 936 ... 939
Description: Cassette Error
Remedy: 1 Are connectors CN8 and CN6 on the printer controller board connected properly? Replace the printer controller board. Plug the connector in securely.

Code: 940
Description: High-Capacity Feed Sensor Error
Remedy: 1 Is connector CN22 on the printer controller board connected properly? Go to “Highcapacity feeder (HCF) service check”. Plug the connector in securely.

Code: 941
Description: High-Capacity Feed Tray Error
Remedy: 1 Is connector CN22 on the printer controller board connected properly? Go to “Highcapacity feeder (HCF) service check”. Plug the connector in securely.

Code: 942
Description: Duplex Error
Remedy: 1 Is connector CN16 on the printer controller board connected properly? Replace the printer controller board. Plug the connector in securely.

Code: 946
Description: Printer/Printhead Controller Board Communication Error
Remedy: 1 Is CN03 on the printhead controller board or CN14 on the printer controller board connected properly? Go to step 2. Connect cables. 2 Make sure all printhead LED EPROMS are present on the printhead controller board. Are all the EPROMS present? Go to step 3. Install the EPROM(s) included with printhead FRU. 3 Replace the printhead controller board. Did this fix the problem? Problem solved. Replace the printer controller board.

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