component testing sensors

[n25an]

Re: component testing sensors

ok... I ran across this tonight... the photo sensor is called a photo interupter... and the link below should list how to test it...
TESTING PHOTO INTERUPTER

Now here is what it looks like from the outside



from the inside


as a schematic

for more info go to the link I provided... vcc is 5v

[blackcat4866]

Why would you want to test a $2 sensor? Especially one that can be stolen from any parts machine made in the last 12 years.

The wiring diagram says pin 1 takes 5V DC, pin 2 is a 5V input (on/off), and pin 3 is ground. But I nearly failed circuits so I can't help you with anything useful.

For pin 2, 3.5vdc counts is the threshold. Under 3.5 = Off. Over 3.5 = On.

Now that's some old-school troubleshooting. It's handy to know when that sensor has no diagnostics.

Typically there are only two fault conditions: Dusty & heat failure (usually near the fuser). =^..^=

[aragul]

Why would you want to test a $2 sensor? Especially one that can be stolen from any parts machine made in the last 12 years.

The wiring diagram says pin 1 takes 5V DC, pin 2 is a 5V input (on/off), and pin 3 is ground. But I nearly failed circuits so I can't help you with anything useful.

[n25an]

Has anyone here ever build a breadboard circuit to component level check a sensor switch? if so could you share the diagram...?

if not does anyone here have the schematic for this sensor
35327400 KYOCERA SENSOR


the schematic would be more than helpful...