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For the HP OfficeJet Pro 6978 Printer (#HP6978), if you observe a #PRINTHEAD #PROBLEM ‘, ‘ #FAILED PRINTHEAD ’,’ ‘ #PRINTER #FAILURE ’, or ‘ PRINTER #MISSING ‘’ alert with a numerical #error #code displayed (i.e. 0x6100004a, xxx03), this type of printer failure or #software / #electrical problem could be caused by a printer #firmware glitch or hang, severely #clogged Printhead #nozzles or the #carriage assembly that holds the ink cartridges is hindered by an obstruction. Perform the following steps to resolve:
You should first check for #obstructions in the carriage path, by clearing any obstructions from the carriage area inside the printer.
1. With the printer on, disconnect the #power cord from the rear of the printer.
2. Open the door to access the carriage inside of the printer.
3. Look in the carriage path for debris such as crumpled paper or dislodged labels, and then remove any that you find.
Next, you will want to perform a hard power #reset on the #printer. With the printer turned ON, disconnect the power cord from the printer. Wait 60 seconds. Reconnect printer power and retest.
If the issue still cannot be resolved then you will need to #service the printer. It is suggested to manually clean the underside of the carriage assembly to confirm ink residue is not causing the issue.
Finally, the bottom of the #HP #OfficeJet PRINTHEAD could be #clogged with dried or built up ink #residue (common problem!). It is suggested to open the printer and remove all 4 cartridges from the carriage assembly. Obtain several paper towels and fold 3 or 4 times, dampen with water. Place the damp towel into the lower tray area next to the carriage assembly; gently push the towel down to get it as flush with bottom as possible. Gently move the PRINTHEAD back and forth over the paper towel; this action will help remove #residual or #dried ink from the #bottom #surfaces of the PRINTHEAD nozzle plates. You may need to repeat this procedure with a clean towel to ensure all ink residues have been removed.
Note: From the time you accessed and removed all the cartridges, you will only have approx. 5 minutes to perform the cleaning with damp towel procedure, otherwise the carriage assembly will automatically, and suddenly, return to the maintenance station. So perform this operation fast!
If the error message ‘ PRINTHEAD PROBLEM ’ or numerical printhead code is still observed on the printer, it is suggested you remove all four cartridges and power off the printer. Power on printer and reinstall all four cartridges to see if it clears. If the problem persists then the internal PRINTHEAD may be electrically damaged or at end of life. In the majority of cases complete printer replacement is usually required, since the PRINTHEAD is not a consumer replaceable part.
Supported Printers:
HP OfficeJet 6950 All-in-One Printer
HP OfficeJet 6951 All-in-One Printer (P4C86A)
HP OfficeJet 6954 All-in-One Printer (P4C81A)
HP OfficeJet 6958 All-in-One Printer
HP OfficeJet 6962 All-in-One Printer (T0G25A)
HP OfficeJet 6975 All-in-One Printer
HP OfficeJet 6979 All-in-One Printer
HP OfficeJet Pro 6958 All-in-One Printer
HP OfficeJet Pro 6960 All-in-One Printer
HP OfficeJet Pro 6961 All-in-One Printer
HP OfficeJet Pro 6963 All-in-One Printer
HP OfficeJet Pro 6964 All-in-One Printer
HP OfficeJet Pro 6966 All-in-One Printer
HP OfficeJet Pro 6968 All-in-One Printer (T0F28A)
HP OfficeJet Pro 6970 All-in-One Printer (T0F33A)
HP OfficeJet Pro 6971 All-in-One Printer
HP OfficeJet Pro 6974 All-in-One Printer
HP OfficeJet Pro 6975 All-in-One Printer (J7K36A)
HP OfficeJet Pro 6976 All-in-One Printer
HP OfficeJet Pro 6978 All-in-One Printer (T0F29A)
HP OfficeJet Pro 6979 All-in-One Printer
Supported HP 902 Series Ink Cartridges:
HP 902 Black ( #T6L98AN140 )
HP 902 Cyan (T6L86AN140)
HP 902 Magenta (T6L90AN140)
HP 902 Yellow (T6L94AN140)
HP 902XL Black ( #T6M14AN140 )
HP 902XL Cyan (T6M02AN140)
HP 902XL Magenta (T6M06AN140)
HP 902XL Yellow (T6M10AN140)
HP 906XL Black (T6M18AN140)
Supported HP 903 Cartridges:
T6M15AE, T6M03AE, T6M07AE, T6M11AE, T6M15AE, T6M03AE, T6M07AE, T6M11AE, T6M19AE
For additional ink cartridge or printer #service tips refer to my other #Uncle #Hulka #servicing tips & videos.
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