Registered Device cannot be Deleted [08/2015 - 08/2021]: Procedure

1. Check if a registered portable player can be deleted normally.

   OK

   Registered portable player can be deleted normally.

Result: 

OK 

USE SIMULATION METHOD TO CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - 08/2021] )

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] , or refer to PROBLEM SYMPTOMS TABLE [08/2019 - 08/2021] )