3. The base and handset cannot be connected.
Check whether the base is able to set in the test mode. OK Check the TX POWER and the TX FREQUENCY on the base unit. OK Set T/P SW to Pulse mode. Press PAGE key twice, check whether the TXD is output from Pin 40 of IC3. OK Check whether the TXD is output from MOD POINT. OK Check whether the handset is able to set in the test mode. OK Check the TX POWER and the TX FREQUENCY on the handset unit. OK Press "3" key, check whether TXD is output from Pin 40 of IC601. OK Check whether the TXD is output from MOD POINT. OK Once turn off the base and the handset power, and turn them on again. Place the handset on the base to charge about 5 seconds, then try connecting again. NG Check R620, R622, C663 and the handset RF unit. NG Check IC601 and its peripheral circuit. NG Check the handset RF unit. NG Check IC604 and its peripheral circuit. NG Check R7, R21, R23, C83 and the base RF unit. NG Check IC3 and its peripheral circuit. NG Check the base RF unit. NG Check IC4 and its peripheral circuit.
