Nokia 9210 Repair Hints page 11

Customer Care Europe & Africa
SCCE Training Group
N505 HAGAR faulty
Check VTCXO (VXO) = 2.8 VDC at C553. If not ok, check N100 CCONT.
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Check 26MHz (Vpp = 800mV AC) at R835, frequency deviation ±100Hz (See picture below).
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- If not ok, check G830 oscillator circuit.
Check RFC = 13MHz (Vpp = 800 mVAC) at L800, frequency deviation ±50Hz (See picture below)
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- If not ok, check V800 and surrounding components for shorts or disconnections and change the faulty ones, otherwise
probably N505 HAGAR circuit is faulty.
Check Vsynte (VSYN_2) = 2.8 VDC at C561. If not ok, check N100 CCONT.
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- Check VREF_2 = 1.5 VDC at R564. If not ok, check N100 CCONT.
Check Vchp = 4.7 VDC at C560. If not ok, refer to G800 SHF oscillator faulty
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Check Vrxrf (VRX) = 2.8 VDC (RX active). If not ok, check N100 CCONT.
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Check Reset = 2.8 VDC (in Local Mode) and 2.8V pulse (in Normal Mode / one part (RX/TX) active) at R800 (See picture
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below)
© 2002 Nokia Mobile Phones
CONFIDENTIAL
RAE-3
13.03.2002
Checked by:
Customer Care Training Group
11 (17)
Repairhints
Version 2.0 Approved
Approved by:
SCCE