Samsung Inkjet SCX-1150F, Руководство по ремонту

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Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
2-2. Driver Spec.
1) Absolute Maximum Rating
2) DC Specification
3) AC/Transient Specifications
4) Truth Table
3. LF(Line Feed) MOTOR drive circuit description
3-1. LF MOTOR
• MOTOR TYPE : 2-2 Bi-polar Stepper Motor
• Drive Voltage : +30V
• Spherical line resistance : 5
Ω
± 7%
• Driver IC : Thunderbolt
3-2. LF Motor Operation
LF Motor(Stepper Motor) drive uses the first Motor Driver(MD1) in Thunderbolt ASIC, and Drive Pulse is output from 4
terminals of A+, A-, B+,and B-. two H letter type Drivers. Drive Pulse controls size and flow direction of current(A+ =>
A- or A- => A+) according to bit7-bit No.13 signals among 13Bit Serial Port Inputs("TBDO" Signal) coming into
Thunderbolt ASIC transmitted from Jupiter-III. This Driver is driven by VBULK power source (+30V), and on terms of
motor stall not being generated, it is designed to supply current of 600mA, maximum 700A current to each phase of
motor.
Name Description Condition Min Max Units
Vout DC Motor Driver Output Voltage 42 Volts
Iout DC Motor Driver Output Current 2.4 A
Name Description Condition Min Nom Max Units
f
PWM
PWM frequency Ta = 25C 19 20 21 KHz
DIR_DCM PWM #NAME? #NAME? #NAME? #NAME?
0 0 On Off On Off
0 1 Off On On Off
1 0 On Off On Off
1 1 Off Off Off On
Name Description Condition Min Max Units
I peak Peak DC Motor Driver Output Current Not Stalled 0.75A Volts
I out DC Motor Driver Sustaining Current On Time=100ms 1.6 2.4 A