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I bought a vintage Canon monitor off a friend which I'd like to interface with and use as a cool retro monitor.
The problem is that I can't find anything useful about this monitor after days of searching on Google and my friend can't help me with it.

The monitor is a Canon v9521 which I suspect is a monochrome unit because of the low power that is needed.
It also only has one cable coming out of it, a standard DB-9 male cable, with no evidence of a connector for power (it's probably powered from the DB-9).
This monitor is for a Canon v3101a or v3102 electric typewriter(?).

I need to know the pinout of the DB-9 cable so that I can power up the monitor and hook it up. I also need to know the protocol that this uses so that I can actually program an Arduino to interface with it.

--- UPDATE ---

I ended up going with Ken Gober's suggestion of opening the monitor and tracing the pins.
There were 2 circuit boards for power and signals like he suggested there might be.

I haven't yet tried actually making anything show up on the screen, but I got far enough to power it and have the screen feel "static-y" like a CRT TV.

Here is the pin diagram that I extracted.

The labels are from the board that the signal pins went to.
So I'll assume the VS and HS are vertical and horizontal sync.
I'm guessing that VD is the video input.
I have no idea what HF might be.
The - pin with the ? might be unconnected or part of the minus volt pins, it had a slightly higher resistance than the minus pins.

I bought a vintage Canon monitor off a friend which I'd like to interface with and use as a cool retro monitor.
The problem is that I can't find anything useful about this monitor after days of searching on Google and my friend can't help me with it.

The monitor is a Canon v9521 which I suspect is a monochrome unit because of the low power that is needed.
It also only has one cable coming out of it, a standard DB-9 male cable, with no evidence of a connector for power (it's probably powered from the DB-9).
This monitor is for a Canon v3101a or v3102 electric typewriter(?).

I need to know the pinout of the DB-9 cable so that I can power up the monitor and hook it up. I also need to know the protocol that this uses so that I can actually program an Arduino to interface with it.

--- UPDATE ---

I ended up going with Ken Gober's suggestion of opening the monitor and tracing the pins.
There were 2 circuit boards for power and signals like he suggested there might be.

I got the monitor powered up and played with signals using an Arduino.
The monitor has a refresh rate of 60 Hz but it seemed to scan the whole screen without requiring input to the HS & VS pins.

Here is the pin diagram that I extracted.

The labels are from the board that the signal pins went to.
So I'll assume the VS and HS are vertical and horizontal sync.
VD is the video input, but no intensity, just on/off.
I have no idea what HF might be.
The - pin with the ? might be unconnected or part of the minus volt pins, it had a slightly higher resistance than the minus pins.

I bought a vintage Canon monitor off a friend which I'd like to interface with and use as a cool retro monitor.
The problem is that I can't find anything useful about this monitor after days of searching on Google and my friend can't help me with it.

The monitor is a Canon v9521 which I suspect is a monochrome unit because of the low power that is needed.
It also only has one cable coming out of it, a standard DB-9 male cable, with no evidence of a connector for power (it's probably powered from the DB-9).
This monitor is for a Canon v3101a or v3102 electric typewriter(?).

I need to know the pinout of the DB-9 cable so that I can power up the monitor and hook it up. I also need to know the protocol that this uses so that I can actually program an Arduino to interface with it.

I bought a vintage Canon monitor off a friend which I'd like to interface with and use as a cool retro monitor.
The problem is that I can't find anything useful about this monitor after days of searching on Google and my friend can't help me with it.

The monitor is a Canon v9521 which I suspect is a monochrome unit because of the low power that is needed.
It also only has one cable coming out of it, a standard DB-9 male cable, with no evidence of a connector for power (it's probably powered from the DB-9).
This monitor is for a Canon v3101a or v3102 electric typewriter(?).

I need to know the pinout of the DB-9 cable so that I can power up the monitor and hook it up. I also need to know the protocol that this uses so that I can actually program an Arduino to interface with it.

--- UPDATE ---

I ended up going with Ken Gober's suggestion of opening the monitor and tracing the pins.
There were 2 circuit boards for power and signals like he suggested there might be.

I haven't yet tried actually making anything show up on the screen, but I got far enough to power it and have the screen feel "static-y" like a CRT TV.

Here is the pin diagram that I extracted.

The labels are from the board that the signal pins went to.
So I'll assume the VS and HS are vertical and horizontal sync.
I'm guessing that VD is the video input.
I have no idea what HF might be.
The - pin with the ? might be unconnected or part of the minus volt pins, it had a slightly higher resistance than the minus pins.