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PAMS Technical Documentation
If the phone gets 'dead' very short time after the power is turned ON, possible reason for this might be
that 13 MHz system clock signal is not coming to the BB. Use the following chart to find the problem.
Oscilloscope
Yes
Turn the phone ON and
measure VCTCXO
(G502) power supply
Vtcxo at C543 - 2,7 V
No
Check CCONT, phone
is 'dead'
,VVXH $SULO
Oscilloscope
Yes
Measure 26 MHz
VCTCXO output signal
at C546 - approx. 1.2
Vpp.
No
VCTCXO is 'dead'
Reason is something
else ( Software,
battery, etc. )
1RNLD &RUSRUDWLRQ
Oscilloscope
Yes
Measure 13 MHz
buffer input at V502 -
approx. 0.4 Vpp
No
Check HAGAR,
divider by 2 in HAGAR
not in function ( not
enabled)
NHM-2/5nx,ny/6/9
Troubleshooting
Oscilloscope
Yes
Measure 13 MHz
buffer output at L511 -
approx. 0,6Vpp.
No
Buffer transistor not in
function ( V500 )
3DJH
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