Clocking troubleshooting
26MHz clock does not work
The output of 26MHz VCTCXO (G7510) can be measured on C7533 and the clock input to transceiver N7510.
XG-614 request the 26MHz clock by driving signal SYS_CLK_EN high (1.8V) and N7510 supply 26MHz clock to
XG-614 on signal SYS_CLK (J7511). In this document, 26 MHz clock does not work means can’t measure 26MHz
clock on SYS_CLK (J7511) after pressing ON_key and trying to power on the phone. So 26 MHz clock does not
work may be caused by two reasons: VCTCXO (G7510) does not work or N7510 does not work.
RM-839; RM-840; RM-841
BB Troubleshooting and Manual Tuning Guide
Issue 1 NOKIA INTERNAL USE ONLY Page 3 – 13
Copyright © 2013 Nokia. All rights reserved.
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