8.9. NCU SECTION
8.9.1. GENERAL
This section is the interface between the telephone line and external telephone. It is composed of an EXT. TEL line relay (RLY101),
bell detection circuit, pulse dial circuit, TAM interface circuit, line amplifier and sidetone circuits and a multiplexer.
8.9.2. EXT. TEL. LINE RELAY (RLY101)
1. Circuit Operation
Normally, this relay switches to the external telephone side (break) and switches to the open side (make) while OFF-HOOK.
{ IC501 (138) High Level
→
CN517 (12) High Level }
→
CN101 (12) High Level
→
Q102 ON
→
RLY101 (make)
8.9.3. BELL DETECTION CIRCUIT
1. Circuit Operation
The signal waveform for each point is indicated below. The signal (low level section) input to pin 42 of ASIC IC501 on the digital
board is read by ASIC and judged as a bell.
TEL LINE
→
PC101 (1, 2 - 4)
→
IC501 (42)
8.9.4. TAM INTERFACE CIRCUIT
This circuit is to switch between FAX receiving and the external TAM’s message recording automatically. This circuit consists of an
EXT. TAM OFF-HOOK detect circuit, monitor transformer, multiplexer, amplifier, and VOX detect circuit.
For details, please refer to TAM INTERFACE SECTION (P.152).
8.9.5. PULSE DIAL CIRCUIT AND ON / OFF HOOK CIRCUIT
While OFF-HOOK, RLY101 is ON. Q102 turns on by pin (138) of IC501 as well. On the other hand, while ON-HOOK, Q102 turns
OFF by pin (138) of IC501, then the line turns OFF. ON/OFF-HOOK, controlled by pin (138) of IC501, makes the pulse dial
operation possible.
IC501 (138) LINE RLY Low Level
→
CN517 (12)
→
CN101 (12)
→
Q102 OFF
→
RLY101 OFF : DC Loop OFF
IC501 (138) LINE RLY High Level
→
CN517 (12)
→
CN101 (12)
→
Q102 ON
→
RLY101 ON : DC Loop ON
147
KX-FHD333BR
Содержание KX-FHD333BR
Страница 3: ...1 TRANSLATION LISTS 1 1 LCD MESSAGES 3 KX FHD333BR ...
Страница 4: ...1 2 ERROR CODE 1 3 BUTTON LISTS 4 KX FHD333BR ...
Страница 21: ...5 1 2 COMPONENT LOCATIONS 21 KX FHD333BR ...
Страница 32: ...6 2 DISASSEMBLY PROCEDURE 6 2 1 HOW TO REMOVE THE PAPER TRAY AND RECORDING PAPER SUPPORT 32 KX FHD333BR ...
Страница 33: ...6 2 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 33 KX FHD333BR ...
Страница 34: ...6 2 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 34 KX FHD333BR ...
Страница 35: ...6 2 4 HOW TO REMOVE THE IMAGE SENSOR CIS 35 KX FHD333BR ...
Страница 36: ...6 2 5 HOW TO REMOVE THE THERMAL HEAD 36 KX FHD333BR ...
Страница 37: ...6 2 6 HOW TO REMOVE THE PLATEN ROLLER AND BACK COVER 37 KX FHD333BR ...
Страница 38: ...6 2 7 HOW TO REMOVE THE PICKUP ROLLER 38 KX FHD333BR ...
Страница 39: ...6 2 8 HOW TO REMOVE THE CASSETTE LEVER 39 KX FHD333BR ...
Страница 40: ...6 2 9 HOW TO REMOVE THE BOTTOM FRAME 40 KX FHD333BR ...
Страница 41: ...6 2 10 HOW TO REMOVE THE DIGITAL ANALOG POWER SUPPLY SENSOR BOARDS AND AC INLET 41 KX FHD333BR ...
Страница 42: ...6 2 11 HOW TO REMOVE THE MOTOR BLOCK AND SEPARATION ROLLER 42 KX FHD333BR ...
Страница 43: ...6 2 12 HOW TO REMOVE THE GEARS OF MOTOR BLOCK 43 KX FHD333BR ...
Страница 44: ...6 3 INSTALLATION POSITION OF THE LEAD WIRES 44 KX FHD333BR ...
Страница 57: ...7 5 2 SREVICE MODE SETTINGS Note The above values are the default values 57 KX FHD333BR ...
Страница 71: ...71 KX FHD333BR ...
Страница 85: ...85 KX FHD333BR ...
Страница 86: ...CROSS REFERENCE TEST FUNCTIONS P 50 86 KX FHD333BR ...
Страница 87: ...CROSS REFERENCE TEST FUNCTIONS P 50 87 KX FHD333BR ...
Страница 88: ...CROSS REFERENCE TEST FUNCTIONS P 50 88 KX FHD333BR ...
Страница 89: ...CROSS REFERENCE TEST FUNCTIONS P 50 89 KX FHD333BR ...
Страница 90: ...90 KX FHD333BR ...
Страница 91: ...91 KX FHD333BR ...
Страница 92: ...CROSS REFERENCE TEST FUNCTIONS P 50 92 KX FHD333BR ...
Страница 96: ...96 KX FHD333BR ...
Страница 100: ...I O and Pin No Diagram 100 KX FHD333BR ...
Страница 101: ...7 6 7 1 CHECK THE STATUS OF THE DIGITAL BOARD CROSS REFERENCE NG Wave pattern Refer to NG EXAMPLE P 98 101 KX FHD333BR ...
Страница 104: ...7 6 7 3 NG EXAMPLE 104 KX FHD333BR ...
Страница 109: ...7 6 9 2 TROUBLESHOOTING FLOW CHART 109 KX FHD333BR ...
Страница 115: ...7 6 13 THERMAL HEAD SECTION Refer to THERMAL HEAD P 129 115 KX FHD333BR ...
Страница 116: ...8 CIRCUIT OPERATIONS 8 1 CONNECTION DIAGRAM 116 KX FHD333BR ...
Страница 118: ...8 2 1 GENERAL BLOCK DIAGRAM 118 KX FHD333BR ...
Страница 120: ...8 3 2 MEMORY MAP 120 KX FHD333BR ...
Страница 128: ...8 4 2 BLOCK DIAGRAM 128 KX FHD333BR ...
Страница 131: ...TIMING CHART i Print Duty 50 or less ii Print Duty more than 50 131 KX FHD333BR ...
Страница 143: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 143 KX FHD333BR ...
Страница 150: ...150 KX FHD333BR ...
Страница 159: ...9 REFERENCE MATERIAL DATA 9 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 159 KX FHD333BR ...
Страница 162: ...9 3 TEST CHART 9 3 1 ITU T No 1 TEST CHART 162 KX FHD333BR ...
Страница 163: ...9 3 2 ITU T No 2 TEST CHART 163 KX FHD333BR ...
Страница 164: ...10 FIXTURES AND TOOLS 164 KX FHD333BR ...
Страница 165: ...11 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 11 1 GENERAL SECTION 165 KX FHD333BR ...
Страница 166: ...11 2 OPERATION PANEL SECTION 166 KX FHD333BR ...
Страница 167: ...11 3 BACK COVER SECTION 167 KX FHD333BR ...
Страница 168: ...168 KX FHD333BR ...
Страница 169: ...11 4 UPPER CABINET SECTION 169 KX FHD333BR ...
Страница 170: ...11 5 LOWER CABINET P C BOARD SECTION CROSS REFERENCE MOTOR SECTION P 171 170 KX FHD333BR ...
Страница 171: ...11 6 MOTOR SECTION 11 7 ACTUAL SIZE OF SCREWS 171 KX FHD333BR ...
Страница 172: ...12 ACCESSORIES AND PACKING MATERIALS 172 KX FHD333BR ...