: A two-page manual summary is also available for viewing on Official Support
Open the bottom battery compartment. Insert 8 x D-size batteries (not included). The unit will automatically switch to battery power when unplugged. sony lbtd505 user manual portable
If you are looking for the official operating instructions or technical documentation, several digital resources are available: Free Digital Archives : You can find the Sony LBT-D505CD service manual for free download or streaming on the Internet Archive Technical Repair Guides : A two-page manual summary is also available
Sony no longer hosts manuals for this model, but you can find (or similar LBT-D series) manuals at: sony lbtd505 user manual portable