Other Errors; Image Problem - Samsung MultiXpress K4 Series Service Manual

4. Troubleshooting

4.8. Other Errors

4.8.1. Image problem

No Problem Description
1 Toner cartridge detection error
2 Paper edge contamination
1) Toner cartridge detection error
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Symptom : Toner cartridge is installed, but "Not Install" message occurs.
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Cause :
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Toner cartridge is not installed properly.
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CRUM harness of the toner cartridge is defective.
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CRUM PBA or CRUM Chip is defective.
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CRUM connection(Modular connector) is defective.
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CRUM Joint PBA is defective.
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Bad connection between the main board and the CRUM Joint PBA
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Troubleshooting
1) Toner cartridge install problem
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Check if the toner cartridge is installed properly.
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If the cartridge comes out automatically from set, check the cartridge fixing hook.
- If there are some problems of hook, replace cartridge cap or cartridge.
2) CRUM harness problem of the toner cartridge
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Check if CRUM harness of the toner cartridge is connected correctly.
Check if modular jack of the toner cartridge is broken or assembled abnormally.
- If the modular jack harness is defective, replace it with new one.
If the modular jack is entered to the toner cartridge, pull out it with hands.
3) CRUM PBA problem or CRUM data broken
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Replace the toner cartridge with new one.
4) CRUM connection(Modular connector) installation problem
a) Open the front cover. Pull out the toner cartridge.
b) Check the CRUM connection (Modular connector) is installed properly.
c) If the modular connector is not installed properly, open the rear cover and re-install.
5) CURM Joint PBA problem
- If CRUM Joint PBA has some problems of the modular jack pin or the main board interface connector etc,
replace the PBA with new one like No.4.
6) Bad connection between the main board and the CRUM Joint PBA
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Check the connection between the main board and the CRUM Joint PBA.
If the connection is bad, replace the harness or the CRUM Joint PBA or main board.
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