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
Blackberry 7130g
Blackberry 7210
Blackberry 7230
Blackberry 7250
Blackberry 7270
Blackberry 7280
Blackberry 7290
Blackberry 7520
Blackberry 7730
Blackberry 7750
Blackberry 7780
BlackBerry 8100 Pearl
Blackberry 8700c
Blackberry 8700f
Blackberry 8700g
Blackberry 8700r
Blackberry 8700v
Blackberry 8703e
Blackberry 8705g
Blackberry 8800
BlackBerry 8820
Blackberry 8830
Blackberry Blackberry 6210
Blackberry Pearl

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