TOSHIBA SX2007A
Manual de Servicio

* BASE UNIT
Symptom Dead unit � � � No ring � � Cause Faulty AC-DC adapter Faulty LM317T(BU8) Faulty 9.6MHz crystal Faulty BU9, BC52 Open BD10 BZ1 , BZ2, BU7 fail BU1 fail Faulty BX1, BU4 � � � � � Remedy Replace AC DC adapter Check and replace as necessary Check and replace as necessary Check and replace as necessary Check and replace as necessary

Phone on fail No TX/RX

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Check and replace as necessary Check BU4 PIN46, PIN47, and surrounding circuit, replace defective components as necessary

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Open BD6, BD7, BD8, BD9, BL3, BL4, BRV1 Faulty BU4 Charge contact dirty Contact fail

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Check and replace as necessary

No DTMF Charge fail Page key no function

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Check and replace as necessary Clean or replace Check the key and rework it