Some Blackberry Models Pin Out Collection

Some Blackberry Models Pin Out Collection Ring 1 has 1.4k ohm loading to ground. When talk play pause function button is pushed it applies a short across ring 1 and 4. With ring 1 disconnected the pearl plays via its internal speaker. How ever with 1 and 4 shorted it continues to play from its internal speaker. 4 pin 3.5mm (2.5mm) plug connector at the headset cable original headset marked HDW-12420-001 Pin Pin Name Description 1 control +2.4v 2 Audio channel left or right 3 Audio channel left or right 4 Ground Ground Ring 1 has a 1.4K ohm loading to Ground. When talk/play/pause function button is pushed it applies a short across ring 1 and 4. With ring 1 disconnected the Pearl plays via its internal speaker. However with 1 and 4 shorted it continues to play from its internal speaker! Pinout compatibility: Blackberry 5810 Blackberry 5820 Blackberry 6230 Blackberry 6280 Blackberry 6510 Blackberry 6710 Blackberry 6750 Blackberry 7100 Blackberry 7105 Blackberry 7130c Blackberry 7130e ...