HP Deskjet 3820 Color Inkjet Printer - Manual (Page 90)

printer lights are flashing or on
printer lights are flashing or on
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what the lights indicate
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print cartridge status light is on or flashing
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resume light is flashing
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power light is flashing
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all lights are flashing
what the lights indicate
Flashing or on lights indicate the printer status.
1. print cartridge status light 2. resume light 3. power light
print cartridge status light is on or flashing
the top cover is open
Close the top cover.
there may be a problem with a print cartridge
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Verify that the correct print cartridges are installed.
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Check if a print cartridge is low on ink or improperly installed.
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