6.3.7. RESET CIRCUIT (WATCH DOG TIMER)
The output signal from pin 1 of the voltage detect IC (IC509) is input to the ASIC (IC501) 136 pin. Then the output signal from pin
133 of the ASIC (IC501) resets the ASIC.
1. During a momentary power interruption, a positive reset pulse of 46~51 msec is generated and the system is reset completely.
2. When pin 132 and 133 of IC501 become low level, they will prohibit the SRAM (IC503) from changing data.
The SRAM (IC504) will go into the backup mode, when they are backed up by a lithium battery.
3. The watch dog timer, built-in the ASIC (IC501), is initialized by the CPU about every 1.5 ms.
When a watch dog error occurs, pin 137 of the ASIC (IC501) becomes low level.
The terminal of the WDERR signal is connected to the reset line, so the WDERR signal works as the reset signal.
149
KX-FP121AL / KX-FM131AL
Содержание KX-FM131AL
Страница 3: ...15 8 FIXTURES AND TOOLS 231 3 KX FP121AL KX FM131AL ...
Страница 9: ...1 11 ITU T No 1 Test Chart 9 KX FP121AL KX FM131AL ...
Страница 11: ...1 12 2 CONTROL PANEL 11 KX FP121AL KX FM131AL ...
Страница 13: ...1 13 1 Connecting to a computer KX FM131 ONLY 13 KX FP121AL KX FM131AL ...
Страница 18: ...1 14 7 ADDING PAPER TO THE PAPER TRAY 1 14 8 DOCUMENTS THE UNIT CAN FEED 18 KX FP121AL KX FM131AL ...
Страница 21: ...1 14 12 REPLACING THE FILM CARTRIDGE 21 KX FP121AL KX FM131AL ...
Страница 22: ...22 KX FP121AL KX FM131AL ...
Страница 29: ...Note The explanations given in the are for servicemen only 29 KX FP121AL KX FM131AL ...
Страница 33: ...2 3 3 TROUBLESHOOTING ITEMS TABLE 33 KX FP121AL KX FM131AL ...
Страница 34: ...2 3 3 1 Simple Check List 34 KX FP121AL KX FM131AL ...
Страница 36: ...2 Document JAM 36 KX FP121AL KX FM131AL ...
Страница 40: ...6 Paper JAM 7 Multiple feed and skew 40 KX FP121AL KX FM131AL ...
Страница 43: ...Fig C 12 A blank page is received 43 KX FP121AL KX FM131AL ...
Страница 47: ...2 3 3 3 1 Defective facsimile section 1 Transmit problem 47 KX FP121AL KX FM131AL ...
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Страница 57: ...57 KX FP121AL KX FM131AL ...
Страница 58: ...58 KX FP121AL KX FM131AL ...
Страница 59: ...59 KX FP121AL KX FM131AL ...
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Страница 61: ...61 KX FP121AL KX FM131AL ...
Страница 62: ...62 KX FP121AL KX FM131AL ...
Страница 70: ...I O and Pin No Diagram 70 KX FP121AL KX FM131AL ...
Страница 72: ...72 KX FP121AL KX FM131AL ...
Страница 74: ...NG Example 74 KX FP121AL KX FM131AL ...
Страница 75: ...2 3 3 4 2 Check the Status of the Digital Board 75 KX FP121AL KX FM131AL ...
Страница 76: ...2 3 3 4 3 RS 232C serial communication KX FM131 only 76 KX FP121AL KX FM131AL ...
Страница 77: ...77 KX FP121AL KX FM131AL ...
Страница 80: ...Note Inside the digital board 80 KX FP121AL KX FM131AL ...
Страница 83: ...Refer to 2 3 3 5 Analog Board Section 83 KX FP121AL KX FM131AL ...
Страница 85: ...2 Troubleshooting Flow Chart 85 KX FP121AL KX FM131AL ...
Страница 87: ...2 3 3 7 Operation Panel Section 1 No key operation 2 No LCD indication 87 KX FP121AL KX FM131AL ...
Страница 90: ...2 3 3 9 CIS Contact Image Sensor Section Refer to 6 4 4 SCANNING BLOCK 90 KX FP121AL KX FM131AL ...
Страница 91: ...91 KX FP121AL KX FM131AL ...
Страница 92: ...2 3 3 10 Thermal Head Section Refer to 6 4 3 THERMAL HEAD 92 KX FP121AL KX FM131AL ...
Страница 93: ...2 3 3 11 PANA LINK 93 KX FP121AL KX FM131AL ...
Страница 94: ...94 KX FP121AL KX FM131AL ...
Страница 95: ...95 KX FP121AL KX FM131AL ...
Страница 96: ...96 KX FP121AL KX FM131AL ...
Страница 97: ...97 KX FP121AL KX FM131AL ...
Страница 100: ...100 KX FP121AL KX FM131AL ...
Страница 114: ...2 4 7 3 PRINTOUT EXAMPLE 114 KX FP121AL KX FM131AL ...
Страница 115: ...115 KX FP121AL KX FM131AL ...
Страница 118: ...2 5 3 PRINT TEST PATTERN 1 Platen roller Reference pattern 118 KX FP121AL KX FM131AL ...
Страница 119: ...2 Left margin Top margin Reference pattern 119 KX FP121AL KX FM131AL ...
Страница 120: ...3 Thermal head 1 dot Reference pattern 120 KX FP121AL KX FM131AL ...
Страница 143: ...6 3 2 MEMORY MAP 143 KX FP121AL KX FM131AL ...
Страница 155: ...155 KX FP121AL KX FM131AL ...
Страница 165: ...6 4 6 3 2 Transmitting documents 6 4 6 3 3 Receiving FAX 165 KX FP121AL KX FM131AL ...
Страница 166: ...6 4 6 3 4 Copying 166 KX FP121AL KX FM131AL ...
Страница 176: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 176 KX FP121AL KX FM131AL ...
Страница 184: ...184 KX FP121AL KX FM131AL ...
Страница 190: ...190 KX FP121AL KX FM131AL ...
Страница 204: ...9 6 MEMO KX FP121AL KX FM131AL 204 ...
Страница 205: ...10 TERMINAL GUIDE OF THE IC S TRANSISTORS AND DIODES 205 KX FP121AL KX FM131AL ...
Страница 206: ...11 FIXTURES AND TOOLS 206 KX FP121AL KX FM131AL ...
Страница 207: ...12 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 12 1 OPERATION PANEL SECTION 207 KX FP121AL KX FM131AL ...
Страница 208: ...12 2 UPPER CABINET SECTION 208 KX FP121AL KX FM131AL ...
Страница 209: ...12 2 1 PICK UP BASE SECTION 209 KX FP121AL KX FM131AL ...
Страница 210: ...12 3 LOWER CABINET P C B SECTION 210 KX FP121AL KX FM131AL ...
Страница 211: ...12 4 MOTOR SECTION 211 KX FP121AL KX FM131AL ...
Страница 212: ...12 5 ACTUAL SIZE OF SCREWS AND WASHER 212 KX FP121AL KX FM131AL ...
Страница 213: ...13 ACCESSORIES AND PACKING MATERIALS 213 KX FP121AL KX FM131AL ...