Nokia 101 Schematic Diagram -

: The logical diagram showing how components like resistors, capacitors, and ICs (Integrated Circuits) are interconnected.

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Phone works but always says "Insert SIM." Diagnosis via Diagram: Check the SIM tray (X200). The diagram shows that SIM1_CD (Card Detect) pin must be shorted to ground via a mechanical switch. If missing, look for broken traces leading to resistor R2007. If R2007 is open (infinite resistance), replace it. nokia 101 schematic diagram