HP Wide-Format Printer Troubleshooting
HP DesignJet T/Z Error 64.1:YZ – The External Hard Disk accessory does not seem to be…
The External Hard Disk accessory does not seem to be connected.
Applicable models
T510T520T610T620T1100T1120T120T1200T1300T770T790T920 +19 more
What error 64.1:YZ means
Error 64.1:YZ on HP DesignJet T/Z indicates The External Hard Disk accessory does not seem to be connected. The source places this code in the USB / External Disk area.
Start here
What you can check first
- The supplied source does not document a customer-level corrective procedure for this exact code.
- Record error 64.1:YZ and the printer model before changing settings or replacing parts.
- If the printer remains in an error state, use the LCR service request so the exact code is included with the request.
When to call for service
If the error comes back
If error 64.1:YZ remains after the customer-level checks above, the supplied source directs the user to service or support. Send LCR the exact code and printer model so the service request can be triaged with the error information attached.
When you contact LCR, include the exact error code, printer model, what happened immediately before the error, and whether it returns after a restart.