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Filter Replacement » History » Version 8

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stuge, 02/19/2016 10:48 PM
Link to Sylvain's page with original description


Motorola filter replacement

To replace filters on Motorola phones you will need:

As the shipping cost for such a small-quantity order is relatively high, a complete component kit is
available for online order from http://shop.sysmocom.de/products/osmocombb-filter-kit

=== Remove existing baluns ===

First you will need to remove existing balun:

Image(motorola_filter_replacement_step_1_low.jpg, 250px)
Image(motorola_filter_replacement_step_2_low.jpg, 250px)

=== Solder new baluns ===

Clean up the phone and solder HHM1526 and HHM1523C1 on the right places (the black dot goes up):

Image(motorola_filter_replacement_step_3_low.jpg, 250px)
Image(motorola_filter_replacement_step_4_low.jpg, 250px)
Image(motorola_filter_replacement_step_5_low.jpg, 250px)

=== Solder ceramic capacitors ===

Last step is to solder ceramic capacitors 04025A150JAT2A and 04025A220JAT2A:

Image(motorola_filter_replacement_step_6_low.jpg, 250px)
Image(motorola_filter_replacement_step_7_low.jpg, 250px)

=== Credits ===

Thanks to [http://246tnt.com/gsm/rx_filter.html Sylvain] and Peter who made this possible.

motorola_filter_replacement_step_1_low.jpg (330 KB) luka12345, 08/29/2011 08:56 AM

motorola_filter_replacement_step_2.png (1.94 MB) luka12345, 08/29/2011 08:56 AM

motorola_filter_replacement_step_2_low.jpg (189 KB) luka12345, 08/29/2011 08:56 AM

motorola_filter_replacement_step_3_low.jpg (581 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_4_low.jpg (388 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_5_low.jpg (359 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_6_low.jpg (419 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_7_low.jpg (206 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_1.png (4.23 MB) luka12345, 08/31/2011 09:12 AM

motorola_filter_replacement_step_4.png (4.33 MB) luka12345, 08/31/2011 09:13 AM

motorola_filter_replacement_step_7.png (2.63 MB) luka12345, 08/31/2011 09:15 AM

usermanual.pdf - FilterReplacementManual DRAFT (PDF) (2.51 MB) zecke2, 12/13/2011 11:43 PM