Optional Lower Input Tray Motor (Opf Motor) Drive And Solenoid Drive Circuit; Circuit Diagram - Panasonic KX-MB2230JT Service Manual

KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT

6.10.1. Optional Lower input Tray Motor (OPF Motor) Drive and Solenoid Drive circuit

6.10.1.1. General
This MFP can add Optional Lower input Tray for improving the performance.
OPF motor feed the paper in this tray to the registration roller.
OPF motor drive circuit is consist of motor drive IC (IC950), current control circuit.

6.10.1.2. Circuit Diagram

3. Explanation of each circuit
1. Motor driver
IC950 is the constant current, Bi-polar stepping motor drive IC.
This IC can drive up to 2A/phase and support up to 2W1-2 phase excitation.
When "enable" signal (IC950_pin2) becomes "L", motor driver is activated, and motor current are supplied from
IC950_pin1, pin18, pin21 and pin22 to drive the motor coil.
Excitation type is selected by the logic level of "MS1"(IC950_pin8) and "MS2"(IC950_pin9).
MS2 of this circuit is fixed "Low" level.
The operation of IC950 is shown in below table corresponding to each logic level of enable, MS1, and MS2.
Enable
(IC950_pin2)
H
L
L
MS1 MS1
(IC950_pin8) (IC950_pin9)
- -
L L
H L
Excitation type
Disable
2 Phase Excitation
F1-2 Excitation
60
Motor Operation
Motor stop
Full speed operation
Half speed operation