
ZKP8011
User Manual
P a g e
| 12
Copyright©2022 ZKTECO CO., LTD. All rights reserved.
18
Failure Analysis
Failure Phenomenon
Solution
The printer command light is
off
1.
Replace the power adapter.
2.
Check the power outlet.
Print no content
1.
Check that the paper is installed in the correct orientation.
2.
Check whether the power supply uses the original power supply.
3.
After confirming the above, if there is no content on the printed self-
check page, the machine has a hardware failure.