Stepping Motor Drive Mode
Function
Mode
Phase Pattern
Speed
Copy
Fine or photo
1-2
432 pps (t=1/432)
Super Fine
1-2
216 pps (t=1/216)
Paper Feed
———
1-2
432 pps (t=1/432)
Stand-by
———
All phases are
currently off.
None
7.4.6. STEPPING MOTOR DRIVE CIRCUIT (RX)
1. Function
The stepping motor works for reception.
2. Motor
During motor driving, pin 124 of ASIC IC501 becomes a high level, and Q503, Q502 turns ON. As a result, +24V is supplied
to the motor coil.
Stepping pulses are output from ASIC IC501 pins, 120~123, causing driver IC508 pins, 16~13 to drive the Motor Coil. The
motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation. A 1-step rotation feeds 0.13 mm of
recording paper.
The timing chart is below.
The motor suspends while it is in the receive mode (about 70~80 msec), pin 124 of ASIC IC501 becomes a low level and Q503
turns OFF. Then Q502 also turns OFF, and instead of +24 V, +5 V is supplied through D501 so that the motor is held in place.
When the system is in the stand-by mode, all of the motor drive transistors turn OFF. Consequently, the motor current stops.
134
KX-FP342BX
Summary of Contents for KX-FP342BX
Page 21: ...4 1 2 COMPONENT LOCATIONS 21 KX FP342BX ...
Page 33: ...5 2 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 33 KX FP342BX ...
Page 34: ...5 2 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 34 KX FP342BX ...
Page 35: ...5 2 4 HOW TO REMOVE THE IMAGE SENSOR CIS 35 KX FP342BX ...
Page 36: ...5 2 5 HOW TO REMOVE THE THERMAL HEAD 36 KX FP342BX ...
Page 37: ...5 2 6 HOW TO REMOVE THE PLATEN ROLLER AND BACK COVER 37 KX FP342BX ...
Page 38: ...5 2 7 HOW TO REMOVE THE PICKUP ROLLER 38 KX FP342BX ...
Page 39: ...5 2 8 HOW TO REMOVE THE CASSETTE LEVER 39 KX FP342BX ...
Page 40: ...5 2 9 HOW TO REMOVE THE BOTTOM FRAME 40 KX FP342BX ...
Page 41: ...5 2 10 HOW TO REMOVE THE DIGITAL ANALOG POWER SUPPLY SENSOR BOARDS AND AC INLET 41 KX FP342BX ...
Page 42: ...5 2 11 HOW TO REMOVE THE MOTOR BLOCK AND SEPARATION ROLLER 42 KX FP342BX ...
Page 43: ...5 2 12 HOW TO REMOVE THE GEARS OF MOTOR BLOCK 43 KX FP342BX ...
Page 44: ...5 3 INSTALLATION POSITION OF THE LEAD WIRES 44 KX FP342BX ...
Page 57: ...6 5 2 SREVICE MODE SETTINGS Note The above values are the default values 57 KX FP342BX ...
Page 71: ...71 KX FP342BX ...
Page 85: ...85 KX FP342BX ...
Page 86: ...CROSS REFERENCE TEST FUNCTIONS P 50 86 KX FP342BX ...
Page 87: ...CROSS REFERENCE TEST FUNCTIONS P 50 87 KX FP342BX ...
Page 88: ...CROSS REFERENCE TEST FUNCTIONS P 50 88 KX FP342BX ...
Page 89: ...CROSS REFERENCE TEST FUNCTIONS P 50 89 KX FP342BX ...
Page 90: ...90 KX FP342BX ...
Page 91: ...91 KX FP342BX ...
Page 92: ...CROSS REFERENCE TEST FUNCTIONS P 50 92 KX FP342BX ...
Page 96: ...96 KX FP342BX ...
Page 100: ...I O and Pin No Diagram 100 KX FP342BX ...
Page 104: ...6 6 7 3 NG EXAMPLE 104 KX FP342BX ...
Page 109: ...6 6 9 2 TROUBLESHOOTING FLOW CHART 109 KX FP342BX ...
Page 115: ...6 6 13 THERMAL HEAD SECTION Refer to THERMAL HEAD P 129 115 KX FP342BX ...
Page 116: ...7 CIRCUIT OPERATIONS 7 1 CONNECTION DIAGRAM 116 KX FP342BX ...
Page 118: ...7 2 1 GENERAL BLOCK DIAGRAM 118 KX FP342BX ...
Page 120: ...7 3 2 MEMORY MAP 120 KX FP342BX ...
Page 128: ...7 4 2 BLOCK DIAGRAM 128 KX FP342BX ...
Page 131: ...TIMING CHART i Print Duty 50 or less ii Print Duty more than 50 131 KX FP342BX ...
Page 150: ...150 KX FP342BX ...
Page 159: ...8 REFERENCE MATERIAL DATA 8 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 159 KX FP342BX ...
Page 162: ...8 3 TEST CHART 8 3 1 ITU T No 1 TEST CHART 162 KX FP342BX ...
Page 163: ...8 3 2 ITU T No 2 TEST CHART 163 KX FP342BX ...
Page 164: ...9 FIXTURES AND TOOLS 164 KX FP342BX ...
Page 165: ...10 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 10 1 GENERAL SECTION 165 KX FP342BX ...
Page 166: ...10 2 OPERATION PANEL SECTION 166 KX FP342BX ...
Page 167: ...10 3 BACK COVER SECTION 167 KX FP342BX ...
Page 168: ...168 KX FP342BX ...
Page 169: ...10 4 UPPER CABINET SECTION 169 KX FP342BX ...
Page 170: ...10 5 LOWER CABINET P C BOARD SECTION CROSS REFERENCE MOTOR SECTION P 171 170 KX FP342BX ...
Page 171: ...10 6 MOTOR SECTION 10 7 ACTUAL SIZE OF SCREWS 171 KX FP342BX ...
Page 172: ...11 ACCESSORIES AND PACKING MATERIALS 172 KX FP342BX ...
Page 180: ...8 REFERENCE MATERIAL DATA 8 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 159 KX FP342BX ...
Page 183: ...8 3 TEST CHART 8 3 1 ITU T No 1 TEST CHART 162 KX FP342BX ...
Page 184: ...8 3 2 ITU T No 2 TEST CHART 163 KX FP342BX ...
Page 185: ...9 FIXTURES AND TOOLS 164 KX FP342BX ...
Page 186: ...10 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 10 1 GENERAL SECTION 165 KX FP342BX ...
Page 187: ...10 2 OPERATION PANEL SECTION 166 KX FP342BX ...
Page 188: ...10 3 BACK COVER SECTION 167 KX FP342BX ...
Page 189: ...168 KX FP342BX ...
Page 190: ...10 4 UPPER CABINET SECTION 169 KX FP342BX ...
Page 191: ...10 5 LOWER CABINET P C BOARD SECTION CROSS REFERENCE MOTOR SECTION P 171 170 KX FP342BX ...
Page 192: ...10 6 MOTOR SECTION 10 7 ACTUAL SIZE OF SCREWS 171 KX FP342BX ...
Page 193: ...11 ACCESSORIES AND PACKING MATERIALS 172 KX FP342BX ...