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Is the resistance less than 1 ohm? GO to E20 . No REPAIR the circuit. TEST the system for normal E20: CHECK CIRCUIT CMM19A (BN/YE) FOR OPEN Measure the resistance between the PSE module side and the handset holder C2MM17 pin 11, circuit 1 Is the resistance less than 1 ohm? GO to E21 . No REPAIR the circuit. TEST the system for normal E21: CHECK CIRCUIT VMM20A (GN/BN) FOR OPEN Measure the resistance between the PSE module side and the handset holder C2MM17 pin 12, circuit 1 Is the resistance less than 1 ohm? GO to E22 . No REPAIR the circuit. TEST the system for normal E22: CHECK CIRCUIT VMM09A (YE/GY) FOR OPEN Measure the resistance between the PSE module side and the handset holder C2MM17 pin 5, circuit 1
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