This is a generated digital 5V pulse coming from the T2333

It is created from the pickup (mounted at the flywheel) witch goes trough a couple of resistors (and other components) until it is good enough for the T2333 to work with. This device makes it a usable incoming signal for the IC (pin13) to use

These pins are used for the external clock witch is mounted on the 3MA CDI

It has to do with the speed and synchronization off the calculation inside the IC (this is a set speed and can't be changed)

On Pin 18 comes the RESET pulse this is a pulse coming from the TA8000S a chip mounted on the 3MA CDI

Its purpose is to start at its begin point of the IC firmware (example after power set to 0V, engine stop, etc)

It is the starting point of the software written inside the IC

This is the main Ground (0V) from the IC, also different pin number from the IC uses the same ground

This is the outgoing digital ignition pulse going to the thyristor witch controls the discharging of the capacitor (spark)

Its a bid tricky as this outgoing signal goes over the T2333 witch has multiple functions on the 3MA CDI circuit board.

The T2333 controls the ignition firing at the back off the lobe until 60Hz, after 60Hz the IC is taken over with its programmed ignition curve.

But now I have a feeling its a incoming signal coming from the T2333 and the IC use it to fire at the back off the lobe. (or for internal calculations)

This is a outgoing signal 60Hz with is used for the TA8000S

The TA8000S is used for the Reset signal it needs a timer/clock pulse to synchronize it self

These are outgoing signals to control the airjets on the 3MA (air solenoids)

They are active depending on incoming rpm and uses a internal programmed field when to be active or not

This is a incoming signal from the speed limiter (inside the speedometer) its a 2,48V or a 4,84V

2,48V is metal tap not between optic's

4,84V Metal tap between optic's

The TPS signal is a incoming signal. (its coming from the sensor on the 3MA cabs)

It is there to use the different ignition curves stored inside the IC

Different voltage means different ignition curves.

Well known voltages coming on pin 35

1.25V to 2.00V Curve 1/2 till 1

2.00V to 2.75V Curve 1/4 till 1/2

2.75V to 3.75V Curve 1/8 till 1/4

3.75V to 4.50V Curve    0 till 1/8

This is a incoming signal form the Sensor inside the YPVS unit. (It is there to know the position off the exhaust valve)

The received voltage on pin 36 is used for calculation off the YPVS pulses given on Pin 5 and 6

A certain voltage means a certain exhaust position desired at a certain rpm

All digital pulses are 0 to 5V or 5V to 0V (block signal)

All variable signals are voltages between 5V and 0V or 0 to 5V

Ground is a solid 0V

Main IC voltage is 5V