Can't remove quorum device

Hi expert,
I've issue removing quorum device from two node cluster. I've add new quorum device, before I remove the old one. below the error message and the quorum information :

=== Quorum Devices ===

Quorum Device Name:                             d4
  Enabled:                                         yes
  Votes:                                           0
  Global Name:                                     /dev/did/rdsk/d4s2
  Type:                                            shared_disk
  Access Mode:                                     scsi2
  Hosts (enabled):                                 pidbsc2u

Quorum Device Name:                             d10
  Enabled:                                         yes
  Votes:                                           1
  Global Name:                                     /dev/did/rdsk/d10s2
  Type:                                            shared_disk
  Access Mode:                                     scsi2
  Hosts (enabled):                                 pidbsc1u, pidbsc2u


root@pidbsc2u # clq remove -F d4
Warning: Force option used.
This cluster is at risk of experiencing a serious outage.