User Manual

ISFM2351

Unable to pair new phone to

previously installed device

Technical Bulletin

PAC-audio.com

Pacific Accessory Corporation

Rev. 072617

Important Notes

Only applies to devices that are version 2.2 or older (version 2.3 or higher is not effected)

*Please note: ISFM2351 is not updatable to a higher version*

Issue:

User wants to pair a new or additional phone to the ISFM2351 but is unable to put the module into pairing

mode.

Cause:

ISFM2351 version 2.2 or older (Fig. A) require a precise 2 second press of the control button (Fig. B,) when

no phone is connected to enter discoverable mode. Releasing the button too soon, or holding the button for

too long, will cause ISFM2351 to ignore command to enter discoverable mode.

Solution:

Press and hold the control button for exactly 2 seconds to enter discoverable mode.

Once discoverable the LED will ash alternating RED/GREEN.

If LED is viewable: watch for LED to start ashing RED/GREEN to indicate module is discoverable.

If LED is not viewable: Use the phones BT settings (Fig. C Android and Fig. D Apple) to verify Tranzit Blu

appears in the list of available devices.

PLEASE NOTE: It may take up to 20 seconds for pairing process to complete once Tranzit Blu is discoverable.

Fig. A

Fig. C Fig. D

Fig. B