HP Wide-Format Printer Troubleshooting
HP DesignJet T/Z Error 74:YZ – Error uploading firmware update file
Error uploading firmware update file.
Applicable models
T510T520T610T620T1100T1120T120T1200T1300T770T790T920 +19 more
What error 74:YZ means
For HP DesignJet T/Z, error 74:YZ is associated with this condition: Error uploading firmware update file. The source places this code in the Firmware / Paper Profiles area.
Start here
What you can check first
- Switch the Power OFF from the back of the Printer and disconnect the Power cord.
- Reconnect the power cord and power ON the Printer.
- Try to update the Firmware again.
When to call for service
If the error comes back
If error 74: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.