[Photocopier Service manual needed]

Does anybody have or know where i can find the service manual of any copier.

Any type.

I am trying to learn.

[Timer. What's wrong]

Thank you Alun

[Timer. What's wrong]

What about this one?

[Timer. What's wrong]

I have done all the changes suggested here and came to this one.

I will build later.

[Timer. What's wrong]

Yes  the switch is a momentary action one.

It is possible that the IC has gone bad because in the beggining i changed  the power
wires by mistake (connected ground to Vcc snd Vcc to ground ) and IC heat up so much that it couldn't be touched with hand (it might have remaind in that state for two minutes).

Should i replace it? Or it is ok.

Thank you for your time.

[Timer. What's wrong]

Still the output stays high.

[Timer. What's wrong]

I have projected this timer and built it.

But the output stays always High, i don't know what's wrong with it?

The cap is 2200uF and the resistor is 10k. I have also tried with a 100uF cap but still no change.

Any help?

[2SC828 datasheet needed]

Thank you man i can see you searched a lot i really appreciate it

              Thanks again.

[2SC828 datasheet needed]

Hi
  i need the datasheet of 2SC828 transistor.
I really need it guys.