HP C7769B Service Manual - Page 77
If This Test Passes, Do Not Replace The Ink, Supply Station
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Service Tests and Utilities 3 Once all the Ink Cartridges are removed the Printer will check the Ink Supply Station. During this short period, the following message will be displayed: ISS Test Please wait. Checking 4 If the Printer detects all the out-of-ink signals, the Ink Supply Station has passed the test and the following message will appear on the Front Panel: ISS Test Test result OK. INK SUPPLY STATION OK. Press ENTER to return to menu Menu Back Enter WARNING IF THIS TEST PASSES, DO NOT REPLACE THE INK SUPPLY STATION. 5 If the Printer does not detect all the out-of-ink signals then the Ink Supply Station must be faulty and the following message will appear on the Front Panel: ISS Test Test result 22:10 Faulty INK SUPPLY STATION Call HP representative In this case, to resolve the problem, try the following: 1 Replace the Ink Supply Station Assembly ⇒ Page 8-48. HP DesignJets 500 and 800 Series Printers Service Manual 4-7