Power Transistor

NOTE: An analog circuit tester should be used.

NO. 1-NO. 4 COIL SIDE





(1) Connect the negative (-) terminal of the 1.5 V power supply to terminal (4) of the ignition power transistor; then check whether there is continuity between terminal (13) and terminal (4) when terminal (3) and the positive (+) terminal are connected and disconnected.
NOTE: Connect the (-) probe of the circuit tester to terminal (13).





(2) Replace the ignition power transistor if there is a malfunction.

NO. 2-NO. 5 COIL SIDE





(1) Connect the negative (-) terminal of the 1.5 V power supply to terminal (4) of the ignition power transistor; then check whether there is continuity between terminal (12) and terminal (4) when terminal (2) and the positive (+) terminal are connected and disconnected.
NOTE: Connect the (-) probe of the circuit tester to terminal (12).





(2) Replace the ignition power transistor if there is a malfunction.

NO. 3-NO. 6 COIL SIDE





(1) Connect the negative (-) terminal of the 1.5 V power supply to terminal (4) of the ignition power transistor; then check whether there is continuity between terminal (11) and terminal (4) when terminal (1) and the positive (+) terminal are connected and disconnected.
NOTE: Connect the (-) probe of the circuit tester to terminal 11.





(2) Replace the ignition power transistor if there is a malfunction.