Sony Discman D-20 Battery
The Discman D-20 battery compartment is inside the CD compartment. Therefore, one needs to open the CD compartment door first. The following photographs show how to do this to install AA size dry cells.
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Sony Discman D-20Inside View
CD Transport Mechanism
Motors
Battery
Sled Mechanism
Broken Cogwheel Repair
Lock Switch
PCB and Chipset
Wiring
Back Cover