[Surge Absorber Circuit]
This circuit is for absorbing surge voltage generated by the transformer.
[Control Circuit and Detecting Circuit]
The control circuit amplifies the output with increased voltage detected in the error detecting circuit. Then it drives the main
transistor.
In this power supply, the duty ratio is defined by changing the ON period of the main transistor.
This is shown as follows.
When the output voltage of the 24V circuit increases, the current of the photo coupler PC101 increases, the pulse width of the
output control IC becomes narrower and the ON period of Q101 becomes shorter.
[Over Current Limiter (O.C.L)]
The highest drain current (Q101) is limited by a limiter circuit (IC101) of 24V. The 24V output is limited by this circuit.
[Over Voltage Circuit]
If the 24V output increases because the error detecting circuit or control circuit is broken, IC101 will recognize this signal and
output becomes 0V.
Dummy load method (to quickly check the power supply output)
Refer to POWER SUPPLY BOARD SECTION (P.108).
158
KX-FP342BX
Содержание KX-FP342BX
Страница 21: ...4 1 2 COMPONENT LOCATIONS 21 KX FP342BX ...
Страница 32: ...5 2 DISASSEMBLY PROCEDURE 5 2 1 HOW TO REMOVE THE PAPER TRAY AND RECORDING PAPER SUPPORT 32 KX FP342BX ...
Страница 33: ...5 2 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 33 KX FP342BX ...
Страница 34: ...5 2 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 34 KX FP342BX ...
Страница 35: ...5 2 4 HOW TO REMOVE THE IMAGE SENSOR CIS 35 KX FP342BX ...
Страница 36: ...5 2 5 HOW TO REMOVE THE THERMAL HEAD 36 KX FP342BX ...
Страница 37: ...5 2 6 HOW TO REMOVE THE PLATEN ROLLER AND BACK COVER 37 KX FP342BX ...
Страница 38: ...5 2 7 HOW TO REMOVE THE PICKUP ROLLER 38 KX FP342BX ...
Страница 39: ...5 2 8 HOW TO REMOVE THE CASSETTE LEVER 39 KX FP342BX ...
Страница 40: ...5 2 9 HOW TO REMOVE THE BOTTOM FRAME 40 KX FP342BX ...
Страница 41: ...5 2 10 HOW TO REMOVE THE DIGITAL ANALOG POWER SUPPLY SENSOR BOARDS AND AC INLET 41 KX FP342BX ...
Страница 42: ...5 2 11 HOW TO REMOVE THE MOTOR BLOCK AND SEPARATION ROLLER 42 KX FP342BX ...
Страница 43: ...5 2 12 HOW TO REMOVE THE GEARS OF MOTOR BLOCK 43 KX FP342BX ...
Страница 44: ...5 3 INSTALLATION POSITION OF THE LEAD WIRES 44 KX FP342BX ...
Страница 56: ...6 5 THE EXAMPLE OF THE PRINTED LIST 6 5 1 USER MODE Note The above values are the default values 56 KX FP342BX ...
Страница 57: ...6 5 2 SREVICE MODE SETTINGS Note The above values are the default values 57 KX FP342BX ...
Страница 71: ...71 KX FP342BX ...
Страница 85: ...85 KX FP342BX ...
Страница 86: ...CROSS REFERENCE TEST FUNCTIONS P 50 86 KX FP342BX ...
Страница 87: ...CROSS REFERENCE TEST FUNCTIONS P 50 87 KX FP342BX ...
Страница 88: ...CROSS REFERENCE TEST FUNCTIONS P 50 88 KX FP342BX ...
Страница 89: ...CROSS REFERENCE TEST FUNCTIONS P 50 89 KX FP342BX ...
Страница 90: ...90 KX FP342BX ...
Страница 91: ...91 KX FP342BX ...
Страница 92: ...CROSS REFERENCE TEST FUNCTIONS P 50 92 KX FP342BX ...
Страница 96: ...96 KX FP342BX ...
Страница 100: ...I O and Pin No Diagram 100 KX FP342BX ...
Страница 101: ...6 6 7 1 CHECK THE STATUS OF THE DIGITAL BOARD CROSS REFERENCE NG Wave pattern Refer to NG EXAMPLE P 98 101 KX FP342BX ...
Страница 104: ...6 6 7 3 NG EXAMPLE 104 KX FP342BX ...
Страница 109: ...6 6 9 2 TROUBLESHOOTING FLOW CHART 109 KX FP342BX ...
Страница 115: ...6 6 13 THERMAL HEAD SECTION Refer to THERMAL HEAD P 129 115 KX FP342BX ...
Страница 116: ...7 CIRCUIT OPERATIONS 7 1 CONNECTION DIAGRAM 116 KX FP342BX ...
Страница 118: ...7 2 1 GENERAL BLOCK DIAGRAM 118 KX FP342BX ...
Страница 120: ...7 3 2 MEMORY MAP 120 KX FP342BX ...
Страница 128: ...7 4 2 BLOCK DIAGRAM 128 KX FP342BX ...
Страница 131: ...TIMING CHART i Print Duty 50 or less ii Print Duty more than 50 131 KX FP342BX ...
Страница 143: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 143 KX FP342BX ...
Страница 150: ...150 KX FP342BX ...
Страница 159: ...8 REFERENCE MATERIAL DATA 8 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 159 KX FP342BX ...
Страница 162: ...8 3 TEST CHART 8 3 1 ITU T No 1 TEST CHART 162 KX FP342BX ...
Страница 163: ...8 3 2 ITU T No 2 TEST CHART 163 KX FP342BX ...
Страница 164: ...9 FIXTURES AND TOOLS 164 KX FP342BX ...
Страница 165: ...10 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 10 1 GENERAL SECTION 165 KX FP342BX ...
Страница 166: ...10 2 OPERATION PANEL SECTION 166 KX FP342BX ...
Страница 167: ...10 3 BACK COVER SECTION 167 KX FP342BX ...
Страница 168: ...168 KX FP342BX ...
Страница 169: ...10 4 UPPER CABINET SECTION 169 KX FP342BX ...
Страница 170: ...10 5 LOWER CABINET P C BOARD SECTION CROSS REFERENCE MOTOR SECTION P 171 170 KX FP342BX ...
Страница 171: ...10 6 MOTOR SECTION 10 7 ACTUAL SIZE OF SCREWS 171 KX FP342BX ...
Страница 172: ...11 ACCESSORIES AND PACKING MATERIALS 172 KX FP342BX ...
Страница 180: ...8 REFERENCE MATERIAL DATA 8 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 159 KX FP342BX ...
Страница 183: ...8 3 TEST CHART 8 3 1 ITU T No 1 TEST CHART 162 KX FP342BX ...
Страница 184: ...8 3 2 ITU T No 2 TEST CHART 163 KX FP342BX ...
Страница 185: ...9 FIXTURES AND TOOLS 164 KX FP342BX ...
Страница 186: ...10 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 10 1 GENERAL SECTION 165 KX FP342BX ...
Страница 187: ...10 2 OPERATION PANEL SECTION 166 KX FP342BX ...
Страница 188: ...10 3 BACK COVER SECTION 167 KX FP342BX ...
Страница 189: ...168 KX FP342BX ...
Страница 190: ...10 4 UPPER CABINET SECTION 169 KX FP342BX ...
Страница 191: ...10 5 LOWER CABINET P C BOARD SECTION CROSS REFERENCE MOTOR SECTION P 171 170 KX FP342BX ...
Страница 192: ...10 6 MOTOR SECTION 10 7 ACTUAL SIZE OF SCREWS 171 KX FP342BX ...
Страница 193: ...11 ACCESSORIES AND PACKING MATERIALS 172 KX FP342BX ...