Ericsson GF 768 Troubleshooting Manual page 34

Troubleshooting guide
• If the resistance is too low, send the phone to the next level.
If all of the feed voltages are correct, measure the amplitude of the 13MHz master clock at C680 (class A, >0.6V
t-t, fig. 6.4). D900 (fig. 6.2) usually gets hot when the clock signal is missing.
• If the signal at C680 is too low, send the phone to the next level.
If the fault remains, send the phone to the next level.
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