Panasonic KX-TSC11MXB Service Manual Download Page 31 | Manualshive

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14.3.2. Initializing Circuit

14.3.2.1. Function

This circuit is used to initialize the CPU when the batteries are installed.

14.3.2.2. Circuit operation

When the batteries are inserted into the unit, then the voltage is regulated by IC302 and power is supplied to the CPU. The unit
starts operating soon after the voltage goes beyond point A in the voltage diagram.

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Summary of Contents for KX-TSC11MXB

Page 1: ...l rights reserved Unauthorized copying and distribution is a violation of law KX TSC11MXB KX TSC11MXW Integrated Telephone System Black Version White Version for Asia Middle Near East and Other Areas Telephone Equipment ORDER NO KM40410538C3 ...

Page 2: ... Input 27 12 TEST MODE 28 13 BLOCK DIAGRAM 29 14 CIRCUIT OPERATION 30 14 1 Bell Detector Circuit 30 14 2 Line Interface 30 14 3 MODULE BLOCK DIAGRAM 30 14 4 Caller ID Detect Circuit 32 15 BLOCK DIAGRAM 33 15 1 IC502 33 15 2 CPU DATA IC502 34 15 3 RINGER IC IC2 35 15 4 EEPROM IC802 35 16 HOW TO REPLACE FLAT PACKAGE IC 36 16 1 Preparation 36 16 2 Procedure 36 16 3 Modification Procedure of Bridge 36...

Page 3: ...reful not to heat too long PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder When applying PbF solder to double layered boards please check the compo...

Page 4: ...SW1 C111 C304 Q108 C161 J002 C409 C420 C106 R114 D105 J009 J010 J006 J014 J013 L102 L101 R126 C101 C814 C819 X801 POS101 SA101 JJ101 PC1 5 8 1 4 SW101 J3 J1 PbF PQUP11270ZA J2 J4 C410 VR401 Q103 Q102 Q106 Q104 Q181 R106 J001 J004 VR402 VR481 YELLOW Component View Marked IC802 IC301 IC302 IC201 IC502 PbF IC501 Flow Solder Side View Note The location of the PbF marks is subject to change without not...

Page 5: ...s boxes with aluminum foil 2 Ground the soldering irons 3 Use a conductive mat on the worktable 4 Do not grasp IC or LSI pins with bare fingers 3 CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s Instructions 5 KX TSC11MXB KX TSC11MXW ...

Page 6: ...4 BATTERY 4 1 Installing the Batteries 4 2 Battery Replacement 6 KX TSC11MXB KX TSC11MXW ...

Page 7: ...5 LOCATION OF CONTROLS 7 KX TSC11MXB KX TSC11MXW ...

Page 8: ...6 DISPLAY 8 KX TSC11MXB KX TSC11MXW ...

Page 9: ...ord Use only a specified Handset for the KX TSC11MXB or KX TSC11MXW Use only a telephone line cord included in the unit If your unit is connected to a PBX which does not support Caller ID services you cannot access those services 9 KX TSC11MXB KX TSC11MXW ...

Page 10: ...7 2 Dialing Mode 10 KX TSC11MXB KX TSC11MXW ...

Page 11: ...7 3 Dial Lock For Service Hint If the current password is forgotten reter to How to Release the Establishment of Password P 12 11 KX TSC11MXB KX TSC11MXW ...

Page 12: ...7 4 How to Release the Establishment of Password After the following procedure you will be able to establish a new password 12 KX TSC11MXB KX TSC11MXW ...

Page 13: ...7 5 Call Restriction For Service Hint If the current password is forgotten reter to How to Release the Establishment of Password P 12 13 KX TSC11MXB KX TSC11MXW ...

Page 14: ...8 OPERATIONS 8 1 Making Calls 8 2 Answering Calls 14 KX TSC11MXB KX TSC11MXW ...

Page 15: ...8 3 For Call Waiting Service Users 8 4 FLASH Button 15 KX TSC11MXB KX TSC11MXW ...

Page 16: ...8 5 Voice Mail Service 8 5 1 Listening to Voice Mail Message s 8 6 Phone Book 8 6 1 Storing Names and Phone Numbers in Phone Book List 16 KX TSC11MXB KX TSC11MXW ...

Page 17: ...Cross Reference Erasing P 22 Chain Dial P 21 17 KX TSC11MXB KX TSC11MXW ...

Page 18: ...18 KX TSC11MXB KX TSC11MXW ...

Page 19: ...8 6 2 Storing Caller List Information in the Phone Book List Cross Reference Erasing P 22 19 KX TSC11MXB KX TSC11MXW ...

Page 20: ...8 6 3 Dialing from the Phone Book 20 KX TSC11MXB KX TSC11MXW ...

Page 21: ...8 6 4 Chain Dial Cross Reference Dialing from the Phone Book P 20 21 KX TSC11MXB KX TSC11MXW ...

Page 22: ...8 6 5 Editing Cross Reference Dialing from the Phone Book P 20 8 6 6 Erasing Cross Reference Dialing from the Phone Book P 20 22 KX TSC11MXB KX TSC11MXW ...

Page 23: ...9 TROUBLESHOOTING Cross Reference 1 Battery Replacement P 6 2 Dialing Mode P 10 3 Dial Lock P 11 4 Call Restriction P 13 23 KX TSC11MXB KX TSC11MXW ...

Page 24: ...24 KX TSC11MXB KX TSC11MXW ...

Page 25: ...10 DISASSEMBLY INSTRUCTIONS Shown in Fig To remove Remove 1 Cabinet Cover Screws 2 6 12 A 4 2 Main P C Board Screws 2 0 6 B 6 Screws 2 6 10 C 4 Main P C Board 25 KX TSC11MXB KX TSC11MXW ...

Page 26: ...OUBLESHOOTING GUIDE Make sure batteries are installed for proper operation before troubleshooting 11 1 Service Hints 11 2 Pulse Dialing Problems 11 3 Tone Dialing Problems handset 26 KX TSC11MXB KX TSC11MXW ...

Page 27: ...11 4 No Ringing Sound When Ring Signal is Input 27 KX TSC11MXB KX TSC11MXW ...

Page 28: ...12 TEST MODE Note After the test the unit will be back to the factory preset mode 28 KX TSC11MXB KX TSC11MXW ...

Page 29: ...1 IC2 Battery 4 5 Q102 Q104 IC802 Q108 Handset Regulator RINGER IC Line ON OFF IC502 CPU Ring_Det LCD EEPROM Transmit Amp Shutter Tone Detect Handset Amp Receiving Handset Amp Sending ToneIn IC301 Batt Low VDD STOP C ID Reset Keyboard Switch IC302 IC803 KX TSC11MXB MXW BLOCK DIAGRAM KX TSC11MXB KX TSC11MXW 29 ...

Page 30: ...etween high and low logic is output from pin 39 of the CPU This switches the line loop on and off generating the dial pulse signal 14 3 MODULE BLOCK DIAGRAM 14 3 1 Telephone Line Interface 14 3 1 1 Circuit operation On hook Q102 is open Q102 is connected as to cut DC loop current and cut the voice signal Off hook Q102 turns on thus providing an off hook condition active DC current flow through the...

Page 31: ...n the batteries are installed 14 3 2 2 Circuit operation When the batteries are inserted into the unit then the voltage is regulated by IC302 and power is supplied to the CPU The unit starts operating soon after the voltage goes beyond point A in the voltage diagram 31 KX TSC11MXB KX TSC11MXW ...

Page 32: ...peration of this circuit assumes that a caller ID service contract has been entered for the circuit being used The Caller ID data from exchange is supplied to the telephone using the method of FSK and displayed on LCD of the unit FSK Frequency Shift Keying format 14 4 2 Circuit operation Caller ID Caller ID signal is sent through the circuit via the following path TEL Line C501 C502 R551 R552 Pin9...

Page 33: ...15 BLOCK DIAGRAM 15 1 IC502 33 KX TSC11MXB KX TSC11MXW ...

Page 34: ...15 2 CPU DATA IC502 34 KX TSC11MXB KX TSC11MXW ...

Page 35: ...the mutual data between Master Device and Slave Device the mutual This terminal needs the pull up resistance external because output circuit of SDA uses Open Drain 3 A0 A1 A2 A0 A1 and A2 terminal is not used 4 WP WP terminal controls writing action It is possible to do only reading action when high level input and it is possible to do reading and writing action when low level input 35 KX TSC11MXB...

Page 36: ...temporarily soldering two diagonally opposite pins in the correct positions on the PCB Be certain each pin is located over the correct pad on the PCB 2 Apply flux to all of the pins on the IC 3 Being careful not to unsolder the tack points slide the soldering iron along the tips of the pins while feeding enough solder to the tip so that it flows under the pins as they are heated 16 3 Modification ...

Page 37: ...17 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 37 KX TSC11MXB KX TSC11MXW ...

Page 38: ...18 CABINET AND ELECTRICAL PARTS Note 1 Batteries are not included 38 KX TSC11MXB KX TSC11MXW ...

Page 39: ...19 ACCESSORIES AND PACKING MATERIALS 39 KX TSC11MXB KX TSC11MXW ...

Page 40: ...r KX TSC11MXB PS HB 5 PQYF10593X1 CABINET COVER for KX TSC11MXW PS HB 6 PQYL10014Z2 STAND WALL MOUNT for KX TSC11MXB PS HB 6 PQYL10014Z1 STAND WALL MOUNT for KX TSC11MXW PS HB 7 PQGT17302Z NAME PLATE for KX TSC11MXB 7 PQGT17376Z NAME PLATE for KX TSC11MXW 8 PQKK10105X2 LID BATTERY for KX TSC11MXB ABS HB 8 PQKK10105X1 LID BATTERY for KX TSC11MXW ABS HB 9 PQJC10064Z BATTERY TERMINAL 10 PQJC10045Z BA...

Page 41: ...100K R425 ERJ3GEYJ185 1 8M R426 ERJ3GEYJ182 1 8K R427 ERJ3GEYJ121 120 Ref No Part No Part Name Description Remarks R428 ERJ3GEYJ103 10K R431 ERJ3GEYJ335 3 3M R432 ERJ3GEYJ474 470K R481 ERJ3GEYJ223 22K R482 ERJ3GEYJ103 10K R483 ERJ3GEY0R00 0 R484 ERJ3GEYJ104 100K R486 ERJ3GEYJ103 10K R487 ERJ3GEY0R00 0 R501 PQ4R10XJ184 180K S R502 PQ4R10XJ184 180K S R503 ERJ3GEYJ154 150K R504 ERJ3GEYJ154 150K R505 ...

Page 42: ...10 ECUV1C104KBV 0 1 C811 ECUV1H102KBV 0 001 C812 ECUV1C333KBV 0 033 C814 ECEA1CKA100 10 C815 ECUV1H102KBV 0 001 C816 ECUV1C104KBV 0 1 C817 ECUV1C104KBV 0 1 C818 ECUV1C104KBV 0 1 C819 ECEA1CKA100 10 C820 ECEA1CK101 100 S C822 ECUV1C104KBV 0 1 OTHERS E1 PQGP10263Y1 PANEL LCD S E2 L5ACAHC00008 LIQUID CRYSTAL DISPLAY E3 PQJE10110Z CONNECTOR ZEBRA E4 PQHR10937Z SPACER LCD PC1 0N3181 PHOTO COUPLER S SA1...

Page 43: ...ion 6 No Mack Handset Mode 7 This schematic diagram may be modified at any time with the development of new technology 8 The shades area on this schematic diagram incorporates special features important for protection from fire and electrical shock hazards 9 When servicing it is essential that only manufacture s specified parts be used for the critical components in the shaded areas of the schemat...

Page 44: ... 44 IOD6 SEG38 45 IOD5 SEG39 46 LVDD 47 VDD 48 EXTCLK_X1 49 EXTCLK_XO 50 RESET 51 X32I 52 X32O 53 VSS 54 RX_Mute 55 TX_Mute 56 UART RXfromPC 57 UART TXtoPC 58 ACK_Mute 73 PULSE 74 OPTION_STROBE 75 EEPROM_CS 76 EEPROM_DATA 77 EEPROM_CLOCK 78 Vol3 79 Vol2 80 Vol1 81 STOP 82 HookSW 83 KEYIN4 84 KEYIN3 85 KEYIN2 86 KEYIN1 87 ToneIn 88 EXHOOK 89 BEEP 90 AVSS 91 DTMF0 92 TIPIN 93 RINGIN 94 NC 95 NC 96 N...

Page 45: ...K R811 Q801 100K R812 2 7V VCC VOUT NC GND R814 100K NC 1 2 3 GND 4 5 6 7 8 VCC R916 56K D915 NC R922 R302 4 7M R301 1M R520 1M 10K R7 R2 22K R9 10K PC1 1 2 3 4 1 L 2 GND 3 4 5 OUT 6 7 8 L 1K R6 C9 0 01 C3 K0 056 SW1 1 4 3 2 RINGERP RINGERM NC R8 JJ101 1 Ring 2 TIP TP7 TP8 BATTP J2 BATTM J3 J4 J1 Q912 R923 100K 18V D104 R121 4 7M R122 3 3M IN USE Q110 R123 1M SW101 5 6 1 3 R107 100K R561 3 3M R563...

Page 46: ...22 1 Memo 46 KX TSC11MXB KX TSC11MXW ...

Page 47: ...1 C502 R161 R1 D302 D102 C302 C107 C2 C1 IC2 SW1 C111 C304 Q108 C161 J002 C409 C420 C106 R114 D105 J009 J010 J006 J014 J013 L102 L101 R126 C101 C814 C819 X801 POS101 SA101 JJ101 PC1 5 8 1 4 SW101 J3 J1 PbF PQUP11270ZA J2 J4 C410 VR401 Q103 Q102 Q106 Q104 Q181 R106 J001 J004 VR402 VR481 YELLOW KX TSC11MXB MXW CIRCUIT BOARD Component View KX TSC11MXB KX TSC11MXW 47 ...

Page 48: ...6 R426 R427 R484 R485 R420 R421 R116 R206 R916 R120 TP9 TP1 C813 C116 R123 Q105 IC501 R105 R121 R122 R201 C204 R922 C203 R205 R552 R551 R513 R514 R565 C816 C809 C807 C808 R564 R481 R553 R554 R482 R423 R424 R425 R402 R409 R428 R208 R207 R202 R203 D915 D202 R109 D106 R164 R117 R112 R110 R165 R111 C201 Q107 IC302 IC201 R119 R166 R167 R115 R118 R113 R104 R107 R108 R103 TP3 TP101 TP102 TP2 D101 R163 C1...

Page 49: ...49 KX TSC11MXB KX TSC11MXW G N KXTSC11MXB KXTSC11MXW ...

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