Smith Corona PWP 3600 DS Personal Word Processor Floppy Disk Vintage Turns On

Smith Corona PWP 3600 DS Personal Word Processor — floppy disk model Powers on, but cannot get a part to move- did once and used to typed, but unsure how to fix. Side knob broke— see photos Item Details: - Brand: Smith Corona - Model: PWP 3600 Personal Word Processor — Model 5F (DS floppy disk variant) - Display: Large multi-line LCD — - Storage: Built-in 3.5 floppy disk drive (right side) - Print System: Smith Corona H&S Series quiet print system - Keyboard: Full QWERTY with dedicated WP function keys — Menu, Search, Insert, Marker, Page End, Reformat, File In, Change, Special, Format, Tabs, Indent, Center, Under, Spell, Check, Cursor Bank - Modes: TYPE and WP switch - Features: Word processing, spreadsheet compatibility, PC data exchange, Condition: - Working — display powers on and shows text - Body: cream/ plastic — light surface yellowing consistent with age, dust particles Crack/broke right know - LCD: bright and legible — see photos - Floppy drive: present and visually intact — not independently tested - 2 floppy dics and manuals included - would recommend a good cleaning