User Manual

1. Ensure the printer is running the most current version of firmware.
For the latest firmware versions, Go to: For the latest firmware versions, Go to: HP FutureSmart -
Latest Firmware Versions
2. Check all connections on the laser/scanner and from the laser/scanner to the DC controller, and
reseat them if necessary.
3. If the error persists, replace the laser scanner.
51.00.YZ
An error with the laser/scanner assembly has occurred in the printer.
● 51.00.10 Beam detect error
● 51.00.19 Laser malfunction
● 51.00.20 Black laser/scanner error
● 51.00.21 Cyan laser/scanner error
● 51.00.22 Magenta laser/scanner error
● 51.00.23 Yellow laser/scanner error
Recommended action for customers
Follow these troubleshooting steps in the order presented.
1. Turn the printer off, and then on.
2. If the error persists, contact your HP-authorized service or support provider, or contact customer
support at www.hp.com/go/contactHP.
Recommended action for call-center agents and onsite technicians
1. Turn the printer off, and then on.
2. If the error persists, check that the 5V Interlock switch (SW1) is working correctly.
NOTE: Both front and right doors share SW1. Ensure the flags that activate the switch are not
broken. Replace the appropriate door if a broken flag is found.
Table 6-14 Part numbers:
Part description Part number
Front door RM2-0200-000CN
Right door RM2-0208-010CN
3. If the error persists, replace the affected laser/scanner.
For instructions: See the Repair Service Manual for this product.
Part number: CZ248-67913
4. If the error persists, check the flat flexible cable connection at the laser/scanner and connectors
J110 and J111 on the DC controller.
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