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Customer Care Europe, Middle East & Africa
SCCE Training Group
Note that R300 is only assembled on PCB-version < UB4_11!
Furthermore these signals are necessary for a proper working HAGAR N500:
TXC measured at C542.
Note that the amplitude of TXC varies between
0.6 Vpp on power level 19 and 2 Vpp on power level 5.
Also check HAGARReset at C540:
Figure 12-10
Remember that HAGARReset varies depending on the phone mode: while it is 2.8 VDC in local mode, it
changes between 0 V (low) and 2.8 V (high) in normal mode!
Also check signal of SHF-oscillator G500 at T502 pin 3/4:
Figure 12-11
If SHF-oscillator does not work on expected frequency, check if voltage at C522 is 2.7 VDC. Also check control
voltage at C558, which varies between 1.2 V and 3.3 VDC. If control voltage is 4.8 VDC, the oscillator is faulty or
the control loop is open.
In case that it is necessary to rework G500 unfortunately you have to remove the RF-shielding first.
If all signals shown on the last two pages are ok but no TX-signal is measurable at L514, change HAGAR N500.
© NMP 2002
Figure 11-8
CONFIDENTIAL
NHM—2/5/6
3410
Date 20.11.2002
TXP 2.8Vpp measured at J503
Checked by:
Customer Care E&A
36 (44)
Repairhints
Version 4.0 Approved
Figure 11.9
Approved by:
SCCE Training Group
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