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 2.3.3.6. Power Supply Board Section.
201
KX-FPC135 / KX-FPC141
Содержание KX-FPC135
Страница 10: ...1 11 CCITT No 1 Test Chart Actual size 10 KX FPC135 KX FPC141 ...
Страница 12: ...1 12 2 LOCATION HANDSET KX FPC135 12 KX FPC135 KX FPC141 ...
Страница 13: ...1 12 3 LOCATION HANDSET KX FPC141 13 KX FPC135 KX FPC141 ...
Страница 14: ...1 12 4 CONTROL PANEL KX FPC135 Model KX FPC135 14 KX FPC135 KX FPC141 ...
Страница 15: ...1 12 5 CONTROL PANEL KX FPC141 Model KX FPC141 15 KX FPC135 KX FPC141 ...
Страница 37: ...2 3 3 TROUBLESHOOTING ITEMS TABLE 37 KX FPC135 KX FPC141 ...
Страница 38: ...2 3 3 1 Simple Check List 38 KX FPC135 KX FPC141 ...
Страница 40: ...2 Document JAM 40 KX FPC135 KX FPC141 ...
Страница 42: ...4 Skew We recommend making a copy of the Fig B document in 3 Multiple feed and using it 42 KX FPC135 KX FPC141 ...
Страница 44: ...6 Paper JAM 7 Multiple feed and skew 44 KX FPC135 KX FPC141 ...
Страница 47: ...Fig C 12 A blank page is received 47 KX FPC135 KX FPC141 ...
Страница 51: ...2 3 3 3 1 Defective facsimile section 1 Transmit problem 51 KX FPC135 KX FPC141 ...
Страница 59: ...59 KX FPC135 KX FPC141 ...
Страница 60: ...60 KX FPC135 KX FPC141 ...
Страница 61: ...61 KX FPC135 KX FPC141 ...
Страница 62: ...62 KX FPC135 KX FPC141 ...
Страница 63: ...63 KX FPC135 KX FPC141 ...
Страница 64: ...64 KX FPC135 KX FPC141 ...
Страница 65: ...65 KX FPC135 KX FPC141 ...
Страница 66: ...66 KX FPC135 KX FPC141 ...
Страница 75: ...I O and Pin No Diagram 75 KX FPC135 KX FPC141 ...
Страница 77: ...77 KX FPC135 KX FPC141 ...
Страница 79: ...NG Example 79 KX FPC135 KX FPC141 ...
Страница 80: ...2 3 3 4 3 Check the Status of the Digital Board 80 KX FPC135 KX FPC141 ...
Страница 82: ...Note Inside the digital board 82 KX FPC135 KX FPC141 ...
Страница 84: ...Note Inside the digital board 84 KX FPC135 KX FPC141 ...
Страница 88: ... KX FPC141 only Refer to 2 3 3 5 Analog Board Section 88 KX FPC135 KX FPC141 ...
Страница 90: ...2 Troubleshooting Flow Chart 90 KX FPC135 KX FPC141 ...
Страница 92: ...2 3 3 8 Operation Panel Section 1 No key operation 2 No LCD indication 92 KX FPC135 KX FPC141 ...
Страница 95: ...2 3 3 10 CIS Contact Image Sensor Section Refer to 6 4 4 SCANNING BLOCK 95 KX FPC135 KX FPC141 ...
Страница 96: ...96 KX FPC135 KX FPC141 ...
Страница 97: ...2 3 3 11 Thermal Head Section Refer to 6 4 3 THERMAL HEAD 97 KX FPC135 KX FPC141 ...
Страница 100: ...2 3 3 12 8 No Link Base Unit TX 2 3 3 12 7 No Link Base Unit RX 100 KX FPC135 KX FPC141 ...
Страница 114: ...2 4 7 3 PRINTOUT EXAMPLE 114 KX FPC135 KX FPC141 ...
Страница 115: ...115 KX FPC135 KX FPC141 ...
Страница 118: ...2 5 3 PRINT TEST PATTERN 1 Platen roller Reference pattern 118 KX FPC135 KX FPC141 ...
Страница 119: ...2 Left margin Top margin Reference pattern 119 KX FPC135 KX FPC141 ...
Страница 120: ...3 Thermal head 1 dot Reference pattern 120 KX FPC135 KX FPC141 ...
Страница 126: ...126 KX FPC135 KX FPC141 ...
Страница 129: ...3 13 Handset Reference Drawing 129 KX FPC135 KX FPC141 ...
Страница 152: ...7 3 3 MEMORY MAP 152 KX FPC135 KX FPC141 ...
Страница 164: ...164 KX FPC135 KX FPC141 ...
Страница 174: ...7 4 6 3 2 Transmitting documents 7 4 6 3 3 Receiving FAX 174 KX FPC135 KX FPC141 ...
Страница 175: ...7 4 6 3 4 Copying 175 KX FPC135 KX FPC141 ...
Страница 185: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 185 KX FPC135 KX FPC141 ...
Страница 192: ...192 KX FPC135 KX FPC141 ...
Страница 200: ... Surge Absorber Circuit 200 KX FPC135 KX FPC141 ...
Страница 208: ...9 4 CPU DATA 9 4 1 IC901 208 KX FPC135 KX FPC141 ...
Страница 216: ...11 1 MEMO 216 KX FPC135 KX FPC141 ...
Страница 222: ...KX FPC135 KX FPC141 222 ...
Страница 224: ...KX FPC135 KX FPC141 224 ...
Страница 226: ...KX FPC135 KX FPC141 226 ...
Страница 234: ...KX FPC135 KX FPC141 234 ...
Страница 237: ...22 TERMINAL GUIDE OF THE IC S TRANSISTORS AND DIODES 237 KX FPC135 KX FPC141 ...
Страница 238: ...23 FIXTURES AND TOOLS 238 KX FPC135 KX FPC141 ...
Страница 239: ...24 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 24 1 OPERATION PANEL SECTION 239 KX FPC135 KX FPC141 ...
Страница 240: ...24 2 UPPER CABINET SECTION 240 KX FPC135 KX FPC141 ...
Страница 241: ...24 2 1 PICK UP BASE SECTION 241 KX FPC135 KX FPC141 ...
Страница 242: ...24 3 LOWER P C B SECTION 242 KX FPC135 KX FPC141 ...
Страница 243: ...24 4 MOTOR SECTION 243 KX FPC135 KX FPC141 ...
Страница 244: ...24 5 HANDSET SECTION 244 KX FPC135 KX FPC141 ...
Страница 245: ...24 6 ACTUAL SIZE OF SCREWS AND WASHER 245 KX FPC135 KX FPC141 ...
Страница 246: ...25 ACCESSORIES AND PACKING MATERIALS 246 KX FPC135 KX FPC141 ...
Страница 264: ...264 KX FPC135 KX FPC141 D Q KXFPC135 KXFPC141 Printed in Japan ...