Trying to fix the printer of a Casio HR 150TER

[TAREKR]

Hello I'm really excited joining this forum as I'm trying since days to find code signification for some parts inside the calculator.
This picture shows a diode but I don't know where I can find the meaning of the numbers on top of it. Could you please help me on that ? Thank
you.

 

[Lightium]

Is it a zener? If you could back away and take a pic of the surrounding traces and parts?

 

[TAREKR]

I really don't know. Measurement is 0.216

 

[TAREKR]

I wanted to know what means the number on to of it. This is the board. and there printer doesn't work at all. Batterie (6V) connected. And zoom on the component.

 

[rjenkinsgb]

It's possibly a 1N3433 ?? That would be an 8.2V, 1W rated zener diode.

Or it's ID code is 34 and date/batch 33..

Many small surface mount devices have a code number & batch number, which are not unique. For those, you need to trace the connections and work out what the device could be, then look at known possibilities from the ID.

The three terminal device above the diode with GF RQ is an example like that. Probably GF is the code and RQ the batch (or manufacturing date or site).

This is the best site I know of at present for cross referencing the ID codes to possible devices:

The SMD components marking codes database - Index page

 

[TAREKR]

Thank you for all !

 

[starLED]

I've found schematic with parts list of this calcuator with printer.

Part on the image is:

D1 2390 1323 DIODE/SCHOTTKY RB100A-T32-T 1 C