HP PageWide Pro MFP 477dw - Error Code 0xc6fd0313

[0xc6fd0313]

My printer suddenly stopped printing black. I changed the cartridges, ran through all the cleaning programs, restarted, turned off - nothing is working! 

There is no place to service this printer near me. Despite not printing any black, it is using black ink - where is this going?! 

[Samrit26]

Hello,

I’m going to answer this straight and honestly, because what you’re describing is a classic inkjet failure pattern, and chasing cleaning cycles will only make it worse.

Even without knowing the exact model yet, the symptoms line up very clearly.

---

What’s actually happening (important)

“It won’t print black, but it’s still using black ink.”

That tells me the black ink is never reaching the paper.

Instead, the ink is being:

• Pumped through the system during cleaning cycles

• Dumped into the waste ink / service station

• Used for maintenance priming, not printing

So the ink is not disappearing — it’s being intentionally purged because the printer thinks the black channel is clogged or failed.

---

Why changing cartridges didn’t help

Inkjet printers do not print directly from the cartridge.

They print through:

• A printhead (either built-in or permanent)

• Tiny nozzles that fire ink using heat or piezo pressure

If the black printhead nozzles are blocked or electrically failed:

• New cartridges won’t matter

• Cleaning cycles won’t fix it

• Restarting won’t fix it

This is why you see zero black on paper, even after “successful” cleanings.

---

Why cleaning programs make it worse

Each cleaning cycle:

• Uses a large amount of black ink

• Forces ink through a failed or blocked channel

• Dumps it into the waste system

After a certain point:
➡️ Cleanings cannot recover a dead black channel
➡️ They only waste ink and age the printer faster

HP does not warn users clearly about this.

---

The two possible black-ink failure types

1️⃣ Severe clog (sometimes recoverable)

• Happens if printer sat unused for a long time

• Ink dries inside the black nozzles

• Rarely fixed after repeated automated cleanings

2️⃣ Printhead electrical failure (very common)

• Black channel overheats or burns out

• Printer thinks it’s printing

• No ink can ever fire onto paper again

Your description strongly suggests #2.

---

Why there’s “no place to service it”

Because for most HP inkjet models:

• The printhead is not serviced locally

• HP does not repair printheads

• The supported fix is unit replacement, not repair

This is by design.

---

What you can still try ONCE (last-resort test)

Only do this if the printer is already unusable:

1. Remove the black cartridge

2. Power OFF printer

3. Wait 5 minutes

4. Reinstall cartridge

5. Run ONE cleaning cycle only

6. Print a black-only test page

If black still does not appear:
➡️ Stop immediately. Further cleaning is pointless.

---

What you should NOT do

• ❌ Don’t keep running cleanings

• ❌ Don’t keep replacing cartridges

• ❌ Don’t assume it’s software or drivers

• ❌ Don’t try flushing with water or alcohol (ruins printhead)

---

The honest mentor conclusion

If:

• Black never prints

• Ink is still being consumed

• Cleanings don’t help

• No service center nearby

➡️ The printer has a failed black printhead channel
➡️ There is no user or shop-level fix

The only real options are:

• Warranty replacement (if applicable)

• Printer replacement

I know that’s frustrating — but continuing will only waste more ink and time.