Sony MZ-R900 MiniDisc Recorder

Sony MZ-R900 MiniDisc RecorderSony MZ R900 MiniDisc player recorder (blue). Quantity 1. Used. ** No other items, batteries, or accessories are included in the sale ** Summary: Sold for Parts Only Not Working The positive internal battery terminal has corroded through and fallen off. The device has trouble reading some discs. Recording tests failed. There are several callouts regarding the appearance. Product Condition (Appearance): Display Panel No callouts. Front Face Some

Sony MZ-R900 MiniDisc player/recorder (blue). Quantity 1. Used.
** No other items, batteries, or accessories are included in the sale **

Summary:
Sold for Parts Only / Not Working
The positive internal battery terminal has corroded through and fallen off. 
The device has trouble reading some discs.
Recording tests failed.
There are several callouts regarding the appearance. 

Product Condition (Appearance):
Display Panel - No callouts.
Front Face - Some scratches and marks, and dents.
Sides - A few chips on some edges.
Rear Face - Some scratches, marks, and shallow dents.
All external facing screws present and tightened.

Product Condition (Functionality):
Playback is OK provided that the device reads the disc. It sometimes reports DISC ERR, NO DISC, or BLANK DISC.
Note that the disc that worked during testing was a TDK Lucir 74.
Recording tests failed.
Power is only possible via an external AA battery case or an AC adapter.
See test results and photographs for detail.

Player / Recorder Unit:
Sony MZ-R900 (blue)

Power Via Rechargeable Gumstick Battery - Fail ** Rechargeable gumstick battery is not included in the sale **
Power Via External AA Battery Case - OK ** External battery case is not included in the sale **
Power Via AC Adapter - OK ** AC adapter is not included in the sale **

Audio Playback - OK provided that the device reads the discs - Played The Best of Sting - 1984 to 1994 (17 tracks) from start to finish with no issues (LP2).
Audio Output (Headphone Jack) - OK
Character Display - OK

Recording Via External Microphone (Analogue) - Fail
Recording Via LINE IN (Analogue) - Not tested
Recording Via Optical Cable (Digital) - Not tested

Menu / Enter - OK
Volume Down - OK
Volume Up - OK
End Search - OK
Rec Mode - OK
Record - OK (button responds but recording doesn't complete successfully)
Pause - OK
Charge / Stop - OK
Track Mark - Not tested
Skip to Next Track - OK
Play - OK
Skip to Previous Track - OK
Hold - OK
Synchro Rec - Not tested

Disk Insert - OK
Disk Eject - OK

Device Setting Details:
AVLS set to OFF
Beep set to ON
Sound set to OFF

Personal Disc Memory erased

Product Information:
Released in 2000, the Sony MZ-R900 is the successor to the MZ-R90/R91. It has both playback and recording functionality. 
It weighs 94 grams without a battery or disc installed. 
It has a 3.5 mm headphone jack for audio output.
It features support for:
- MDLP
- Personal disc memory
- Program play mode
- Date stamp
- Digital recording level controls
- Eight step bass/treble settings
- Melody timer 

Hopefully this information is clear and covers everything you need, but don't hesitate to reach out if you have any questions.