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