
17
KX-FT931LA-B
6.3.2.
Flash Memory (IC2)
This 512KB ROM (FLASH MEMORY) carries a common area of 32KB and bank areas which each have 8KB (BK4~BK63). The
addresses from 0000H to 7FFFH are for the common area and from 8000H to 9FFFH are for the bank areas.
6.3.3.
Dynamic RAM (IC4)
The DRAM serves as CPU and receives memory.
The address is F200H~F3FFH (DRAM access window 1) and F600H~F7FFH (DRAM access window 2).
6.3.4.
Reset Circuit (Watch dog timer)
The output signal (reset) from pin 4 of the voltage detect IC (IC3) is input to the ASIC (IC1) 114 pin.
1. During a momentary power interruption, a positive reset pulse of 50~70 msec is generated and the system is reset com-
pletely.
2. The watch dog timer, built-in the ASIC (IC1), is initialized by the CPU about every 1.5 ms.
When a watch dog error occurs, pin 115 of the ASIC (IC1) becomes low level.
The terminal of the 'WDERR' signal is connected to the reset line, so the 'WDERR' signal works as the reset signal.
Содержание KX-FT931LA-B
Страница 11: ...11 KX FT931LA B 6 Technical Descriptions 6 1 Connection Diagram ...
Страница 21: ...21 KX FT931LA B 6 4 2 Block Diagram ...
Страница 23: ...23 KX FT931LA B ...
Страница 35: ...35 KX FT931LA B b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...
Страница 66: ...66 KX FT931LA B ...
Страница 67: ...67 KX FT931LA B CROSS REFERENCE Test Mode P 54 ...
Страница 68: ...68 KX FT931LA B CROSS REFERENCE Test Mode P 54 ...
Страница 69: ...69 KX FT931LA B CROSS REFERENCE Test Mode P 54 ...
Страница 70: ...70 KX FT931LA B ...
Страница 72: ...72 KX FT931LA B ...
Страница 73: ...73 KX FT931LA B ...
Страница 74: ...74 KX FT931LA B CROSS REFERENCE Test Mode P 54 ...
Страница 101: ...101 KX FT931LA B NG Wave pattern Note Refer to NG Example P 106 ...
Страница 103: ...103 KX FT931LA B I O and Pin No Diagram ...
Страница 105: ...105 KX FT931LA B ...
Страница 106: ...106 KX FT931LA B 12 5 5 3 NG Example ...
Страница 110: ...110 KX FT931LA B 12 5 7 2 Troubleshooting Flow Chart ...
Страница 114: ...114 KX FT931LA B 12 5 10 CIS Contact Image Sensor Section Refer to Scanning Block P 24 CROSS REFERENCE Test Mode P 54 ...
Страница 115: ...115 KX FT931LA B 12 5 11 Thermal Head Section Refer to Thermal Head P 22 ...
Страница 116: ...116 KX FT931LA B 13 Service Fixture Tools ...
Страница 119: ...119 KX FT931LA B 14 2 Disassembly Procedurel 14 2 1 How to Remove the Operation Panel Block ...
Страница 120: ...120 KX FT931LA B 14 2 2 How to Remove the Operation Board LCD and Platen Roller ...
Страница 121: ...121 KX FT931LA B 14 2 3 How to Remove the Separation Holder and Document Feed Support ...
Страница 122: ...122 KX FT931LA B 14 2 4 How to Remove the Image Sensor CIS and Feed Roller ...
Страница 123: ...123 KX FT931LA B 14 2 5 How to Remove the Lock Lever and Thermal Head ...
Страница 124: ...124 KX FT931LA B 14 2 6 How to Remove the Bottom Frame ...
Страница 125: ...125 KX FT931LA B 14 2 7 How to Remove the Analog Board Digital Board Power Supply Board and Power Cord ...
Страница 126: ...126 KX FT931LA B 14 2 8 How to Remove the Gear Block and Separation Roller 14 2 9 How to Remove the Motor of Gear Block ...
Страница 127: ...127 KX FT931LA B 14 2 10 Installation Position of the Lead Wires ...
Страница 133: ...133 KX FT931LA B 15 2 3 Mechanical Movements in the Main Operations 15 2 3 1 Idle Status ...
Страница 135: ...135 KX FT931LA B 15 2 3 4 Copying CROSS REFERENCE Sensor Section P 113 ...
Страница 139: ...139 KX FT931LA B 16 1 4 Power Supply Board ...
Страница 142: ...142 KX FT931LA B 16 3 Test Chart 16 3 1 ITU T No 1 Test Chart ...
Страница 143: ...143 KX FT931LA B 16 3 2 ITU T No 2 Test Chart ...
Страница 144: ...144 KX FT931LA B MEMO ...
Страница 151: ...151 KX FT931LA B MEMO ...
Страница 160: ...160 KX FT931LA B MEMO ...
Страница 162: ...162 KX FT931LA B 20 1 2 Upper Cabinet Section ...
Страница 163: ...163 KX FT931LA B 20 1 3 Lower Cabinet Section ...
Страница 164: ...164 KX FT931LA B 20 1 4 Gear Block Section ...
Страница 165: ...165 KX FT931LA B 20 1 5 Screws ...
Страница 166: ...166 KX FT931LA B 20 1 6 Accessories and Packing Materials ...