Netbackup tape drive issue

Hi 

I have a netbackup master at 8.1 , OS win 2012 R2. master n media server are same. 

there was a LTO5 tape drive connected to it, local site guys replaced it with help of a vendor. Now we have HP autoloaded tape library + LTO7 tape drive attached. Hp tape library and tape drive are visible to OS (checked on device management) but not visible to Netbackup. So after configuration tape robot visible on NBU GUI but not tape drive . 

C:\Program Files\Veritas\Volmgr\bin>scan
************************************************************
*********************** SDT_TAPE ************************
*********************** SDT_CHANGER ************************
************************************************************
------------------------------------------------------------
Device Name : "Changer0"
Passthru Name: "Changer0"
Volume Header: ""
Port: 2; Bus: 0; Target: 4; LUN: 1
Inquiry : "HP 1x8 G2 AUTOLDR 5.30"
Vendor ID : "HP "
Product ID : "1x8 G2 AUTOLDR "
Product Rev: "5.30"
Serial Number: "DEC03708E3"
WWN : ""
WWN Id Type : 0
Device Identifier: "HP 1x8 G2 AUTOLDR DEC03708E3"
Device Type : SDT_CHANGER
NetBackup Robot Type: 8
Removable : Yes
Device Supports: SCSI-5
Number of Drives : 1
Number of Slots : 8
Number of Media Access Ports: 0
Drive 1 Serial Number : "CZ20390T55"
Flags : 0x0
Reason: 0x0

C:\Program Files\Veritas\Volmgr\bin>

C:\Program Files\Veritas\Volmgr\bin>tpautoconf.exe -report_disc

C:\Program Files\Veritas\Volmgr\bin>

do check attached file as well.