Can you keep using it?
Can you keep using it?
Contact customer support if any of these apply
- !Cannot Detect remains after reseating the part correctly.
- !Multiple supplies start showing recognition problems at once.
What to check first
Step-by-step checks
- 1
Safe first step
Open the relevant cover and reseat the indicated supply carefully.
Start with the official recovery step before moving on to parts or deeper servicing.
- 2
Safe first step
Confirm the part is the right one for the printer.
- 3
Safe first step
Close the cover firmly and retry.
Background
What this message usually means
Brother shows Cannot Detect when the machine cannot confirm the presence or state of a required consumable or replaceable part. It usually points to seating, recognition, or compatibility checks that need attention first.
Before the message
What users usually notice first
Messages like this often appear after the printer fails one of its normal startup, supply, or paper-path checks and cannot return to ready state cleanly.
Diagnosis
Likely causes
A toner, drum, or related part is not seated correctly.
The machine cannot recognize the installed supply.
A cover or latch did not close cleanly after replacement.
Service
When service or replacement is more likely
- -This is usually a seating or recognition problem before it becomes a service call.
Avoid wrong turns
Common misreads of this message
- -Treating the message like a confirmed failed part instead of a support clue about which system has stopped the printer.
- -Assuming any supply-related wording means the next step is automatically to buy a cartridge, toner, drum, or printhead.
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How to separate ordinary cartridge or toner trouble from the kind of printer fault that usually points to real service.
Boundary
When to stop troubleshooting and move to support
Use the message once to classify the problem, then move to support if the printer still cannot return to ready after the first safe checks.
Keep browsing
Where to go next
Source notes
Brother's MFC-L8395 online guide includes Cannot Detect in its error and maintenance messages table.
Built around Brother's online error and maintenance messages guidance for newer MFC-L8395-class color office lasers. Exact wording can vary a little by region and closely related model.
Printer error codes can vary a little by firmware, region, and exact model variant. Use this guide as a family-level starting point and stop if the next step would require disassembly or service-mode changes.
Known family variants: MFC-L8395CDW, MFC-L8905CDW, MFC-L9570CDW
Last reviewed: 2026-04-12
Reference: Open reference