6.3.2.
ASIC (IC1)
This custom IC is used for general FAX operations.
1. CPU
This model uses a Z80 equivalent CPU operating at 8MHz.
Many of the peripheral functions are handled by custom designed LSIS. As a result, the CPU only needs to process the result.
2. RTC
Real time clock.
3. DECODER
Decodes the address.
4. ROM/RAM I/F
Controls the SELECT signal of ROM or RAM and bank switching.
5. CIS I/F
Controls document reading.
6. IMAGE DATA RAM
This is inside the ASIC and has 8KB which is used for image processing.
7. THERMAL HEAD I/F
Transmits the recorded data to the thermal head.
8. MOTOR I/F
Controls the motor which feeds the document and feeds the reading document.
9. OPERATION PANEL I/F
Control port for Operation Panel.
10. I/O PORT
I/O Port Interface (for analog board port control).
11. ANALOG UNIT
Electronic volume for the handset and TAM monitor.
Sends beep tones, etc.
Explanation of the Pin Distribution (IC1)
Pin No.
Pin Name
Buffer Power Supply
Description
Digital
I/O
1
AIN1
Analog
Analog video signal
AIN1
2
AIN2
Analog
Thermistor voltage
AIN2
3
AIN3
Analog
Thermistor voltage, etc.
VREFB
4
AMON
Analog
Analog monitor
OPEN
5
VSSB
Ground for analog video processing
GND
6
VDDB
Power supply for analog video processing
+3.3V
7
3.3V/BATT
RTC backup power supply
+3.3V/BATT
8
X32OUT
3.3V/BATT
32.768kHz crystal for RTC
X32OUT
9
X32IN
3.3V/BATT
32.768kHz crystal for RTC
X32IN
10
VSS
Ground
GND
11
XBACKEN
5V/BATT
Backup enable
XBACKEN
12
5V/BATT
RAMCS buffer/Backup power supply for reset
5V/BATT
13
XRAMCS
5V/BATT
SRAM chip selection
SRAMCS
14
FTG
5V
FTG
FTG
O/Z
15
F1
5V
F1 (50%/75% selection)
F1
O/Z
16
F2/OP50
5V
F2/Output port selection
E
O
17
FR/OP51
5V
FR/Output port selection
RS
O
18
CPC
5V
CPC (also used as Input port)
CPC
I
19
5V
Power supply for buffer
+5V
20
VSS
Ground
GND
21
RVN
5V
RVN (for both scanner encoder and input port)
KIN0
I
22
IRDATXD/IOP81
5V
TXD for IrDA/Input output port selection
OPSEL
O
23
IRDARXD/IOP80
5V
RXD for IrDA/Input output port selection
TEST (CISON)
O
24
TXD/IOP30
5V
UART/Input output port selection
TELRXENB
O
25
RXD/IOP31
5V
UART/Input output port selection
KIN1
I
26
XRTS/IOP32
5V
UART/Input output port selection
KIN2
I/O
27
XCTS/IOP33
5V
UART/Input output port selection
KIN3
I/O
28
MIDAT/IOP45
5V
Cross point IC/Input output port selection
MDMTXENB
O
29
MICLK/IOP46
5V
Cross point IC/Input output port selection
TONE1ENB
O
106
KX-FT25LA
Содержание KX-FT25LA
Страница 8: ...1 10 CCITT No 1 TEST CHART 8 KX FT25LA ...
Страница 9: ...1 11 LOCATION OF CONTROLS 1 11 1 OVERVIEW 9 KX FT25LA ...
Страница 10: ...1 11 2 CONTROL PANEL 10 KX FT25LA ...
Страница 13: ...1 13 3 SETTING YOUR LOGO 13 KX FT25LA ...
Страница 16: ...1 14 2 1 MAINTENANCE LIST 1 14 2 2 MAINTENANCE CYCLE 16 KX FT25LA ...
Страница 21: ...2 2 1 Document Jam 21 KX FT25LA ...
Страница 23: ...2 3 3 Simple Check List 23 KX FT25LA ...
Страница 24: ...2 3 4 TROUBLESHOOTING ITEMS TABLE 24 KX FT25LA ...
Страница 25: ...2 3 4 1 ADF Auto Document Feed Section 1 No document feed 25 KX FT25LA ...
Страница 26: ...2 Document JAM 26 KX FT25LA ...
Страница 28: ...4 Skew 28 KX FT25LA ...
Страница 29: ...5 Image is distorted When printing 29 KX FT25LA ...
Страница 30: ...6 Black or white vertical lines appear 7 Skewed receiving image 30 KX FT25LA ...
Страница 32: ...32 KX FT25LA ...
Страница 34: ...2 3 4 2 1 Defective facsimile section 1 Transmit problem 34 KX FT25LA ...
Страница 35: ...2 Sometimes there is a transmit problem 35 KX FT25LA ...
Страница 37: ...4 The unit can copy but cannot transmit receive 37 KX FT25LA ...
Страница 41: ...7 How to output the Journal Report 41 KX FT25LA ...
Страница 43: ...Countermeasure 43 KX FT25LA ...
Страница 44: ...44 KX FT25LA ...
Страница 45: ...45 KX FT25LA ...
Страница 46: ...46 KX FT25LA ...
Страница 47: ...47 KX FT25LA ...
Страница 48: ...48 KX FT25LA ...
Страница 49: ...49 KX FT25LA ...
Страница 50: ...50 KX FT25LA ...
Страница 52: ...1 Entering the remote programming mode and changing service codes 52 KX FT25LA ...
Страница 56: ...2 3 4 3 1 Digital Block Diagram 56 KX FT25LA ...
Страница 58: ...Normal Wave Patterns 58 KX FT25LA ...
Страница 60: ...60 KX FT25LA ...
Страница 62: ...62 KX FT25LA ...
Страница 63: ...NG Example 63 KX FT25LA ...
Страница 66: ...Note Inside the digital board Inside the operation board 66 KX FT25LA ...
Страница 67: ...2 3 4 4 2 Defective ITS Integrated Telephone System Section 67 KX FT25LA ...
Страница 69: ...Refer to 2 3 4 4 Analog Board Section 69 KX FT25LA ...
Страница 71: ...2 Troubleshooting Flow Chart 71 KX FT25LA ...
Страница 72: ...72 KX FT25LA ...
Страница 74: ...2 3 4 6 Operation Board Section 1 No key operation 2 No LCD indication 74 KX FT25LA ...
Страница 76: ...2 3 4 8 Read Section Refer to 6 4 4 SCANNING BLOCK 76 KX FT25LA ...
Страница 77: ...77 KX FT25LA ...
Страница 78: ...2 3 4 9 Thermal Head Section Refer to 6 4 3 THERMAL HEAD 78 KX FT25LA ...
Страница 86: ...2 5 TEST FUNCTIONS 86 KX FT25LA ...
Страница 89: ...4 DISASSEMBLY INSTRUCTIONS 89 KX FT25LA ...
Страница 90: ...90 KX FT25LA ...
Страница 91: ...91 KX FT25LA ...
Страница 92: ...92 KX FT25LA ...
Страница 93: ...93 KX FT25LA ...
Страница 94: ...94 KX FT25LA ...
Страница 95: ...95 KX FT25LA ...
Страница 96: ...96 KX FT25LA ...
Страница 97: ...97 KX FT25LA ...
Страница 98: ...98 KX FT25LA ...
Страница 99: ...99 KX FT25LA ...
Страница 101: ...5 3 FLAT PACKAGE IC INSTALLATION PROCEDURE 5 4 BRIDGE MODIFICATION PROCEDURE 101 KX FT25LA ...
Страница 102: ...6 CIRCUIT OPERATIONS 6 1 CONNECTION DIAGRAM 102 KX FT25LA ...
Страница 104: ...6 2 1 General Block Diagram 104 KX FT25LA ...
Страница 105: ...6 3 CONTROL SECTION 6 3 1 BLOCK DIAGRAM 105 KX FT25LA ...
Страница 114: ...6 4 2 Block Diagram 114 KX FT25LA ...
Страница 116: ...116 KX FT25LA ...
Страница 121: ...6 4 6 3 2 Scanning 6 4 6 3 3 Printing Note See 6 5 SENSERS AND SWITCHES 121 KX FT25LA ...
Страница 122: ...6 4 6 3 4 Copying 122 KX FT25LA ...
Страница 131: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 131 KX FT25LA ...
Страница 133: ...6 7 Analog Unit Block Diagram 133 KX FT25LA ...
Страница 137: ...6 10 2 Circuit Diagram 137 KX FT25LA ...
Страница 140: ...6 12 POWER SUPPLY BOARD SECTION 140 KX FT25LA ...
Страница 153: ...10 TERMINAL GUIDE OF THE IC S TRANSISTORS AND DIODES 153 KX FT25LA ...
Страница 154: ...11 FIXTURES AND TOOLS 154 KX FT25LA ...
Страница 155: ...12 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 12 1 OPERATION PANEL SECTION 155 KX FT25LA ...
Страница 156: ...12 2 UPPER CABINET SECTION 156 KX FT25LA ...
Страница 157: ...12 3 LOWER CABINET P C B SECTION 157 KX FT25LA ...
Страница 159: ...12 5 ACTUAL SIZE OF SCREWS AND WASHER 159 KX FT25LA ...
Страница 160: ...13 ACCESSORIES AND PACKING MATERIALS 160 KX FT25LA ...