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Helpful answers
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Dec 21, 2015 12:45 PM in response to jianzpfby Jason L,Hi jianzpf,
Welcome to Apple Support Communities.
It sounds like your MacBook Pro displays a message that says your wireless printer is offline after waking the notebook from sleep or restarting.Try taking a look at the article linked below and running through the general printer troubleshooting tips that it provides.
Get help resolving printer issues on your Mac - Apple Support
If you have some other printing issue
These steps may resolve printing issues that have no other clear cause:
- Open the Printers & Scanners pane of System Preferences, then select your printer and click the minus sign (-) to remove the printer from the list.
- Follow the steps in the previous section to add your printer.
- If the issue persists, reset the printing system, then follow the steps in the previous section once more.
If the issue remains unresolved, take these final steps to move aside any currently installed printer drivers:
- Reset the printing system again.
- Rename the folder at /Library/Printers:
- From the Finder, choose Go > Go to Folder. Then type
/Libraryand click Go. - Click once on the Printer folder to select it, then press Return to begin renaming the folder. Type
Printers-old, then press Return to save the new name.
- From the Finder, choose Go > Go to Folder. Then type
- Follow the steps in the previous section once more.
Ciao.
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Dec 21, 2015 9:54 PM in response to Jason Lby jianzpf,Hi, Jason,
Thank you for replying my message.
I have tried to re-install the printer quite a few times. The printer/scanner works fine after a fresh install. But the printer/scanner is shown as disconnected if:
1. The printer/scanner goes into deep sleep after idling for some time
2. The MacBook Pro is waked up from sleep
3. The MacBook Pro is rebooted
I also tried to install the printer by printer network IP address. The printer works fine, but the scanner is not available this way.
I also have a PC connected to the same network and the printer/scanner works okay under the above situations.
I don't know if there's anything else I can do to solve this problem. Any suggestion would be appreciated.
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Dec 22, 2015 6:10 AM in response to jianzpfby Jason L,Thank you for using the Apple Support Communities. Due to the nature of the printer issue, you may find more information by using another one of these Apple support resources - https://getsupport.apple.com/GetproductgroupList.action.
