4.5 Connector for Operation Panel (CN500)
Pin Assignment
Pin No. | Signal Name | Input/Output | Function |
1 | Vcc | — | Power supply for circuit (+5V) |
2 | LF_SW | Input | LF switch input (paper feeding) |
3 | GND | — | GND for circuit |
4 | POWER_LED | Output | POWER_LED output |
5 | ERROR_LED | Output | ERROR_LED output |
Connector used:
Connection Example
Control Board | Vcc | CN500 |
|
| Vcc (+5V) |
|
| 1 |
1 KΩ |
| 3.3 KΩ |
| LF_SW | |
|
| |
|
| 2 |
1000∝F |
| GND |
|
| 3 |
|
| 47Ω |
|
| POWER_LED |
|
| 4 |
|
| 47Ω |
|
| ERROR_LED |
|
| 5 |
CAUTION! |
|
|
●POWER LED and ERROR LED are provided with a resister of 47Ω at the circuit side. When using LED, connect the resister to conform to the rating of the LED. (Saturation voltage across collector and emitter of transistor VCE(sat)= 0.25V (max.))
●LF_SW input terminal has the above circuit configuration. A ceramic capacitor is provided at the circuit side to prevent chattering. Note that chattering may be large depending on the switch.
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