Panasonic KX-TG8411BX Service Manual
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Panasonic KX-TG8411BX Service Manual

Panasonic KX-TG8411BX Service Manual

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Telephone Equipment
KX-TG8411BX
Model No.
KX-TGA840BX
Digital Cordless Phone
(for Middle Near East and Africa)
© Panasonic Communications Co., Ltd. 2009.
Unauthorized copying and distribution is a viola-
tion of law.

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Summary of Contents for Panasonic KX-TG8411BX

  • Page 1 Telephone Equipment KX-TG8411BX Model No. KX-TGA840BX Digital Cordless Phone (for Middle Near East and Africa) © Panasonic Communications Co., Ltd. 2009. Unauthorized copying and distribution is a viola- tion of law.

  • Page 2: Technical Descriptions

    KX-TG8411BX/KX-TGA840BX 1 Technical Descriptions 1.1. Block Diagram (Base Unit)
  • Page 3 KX-TG8411BXKX-TGA840BX 1.2. Circuit Operation (Base Unit) 1.2.1. Outline Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.2). • DECT BBIC (Base Band IC): IC7 - Handling all the audio, signal and data processing needed in a DECT base unit - Controlling the DECT specific physical layer and radio section (Burst Module Controller section) - ADPCM code filter for speech encoding and speech decoding (DSP section) - Echo-cancellation and Echo-suppression (DSP section)

  • Page 4: Power Supply Circuit

    KX-TG8411BX/KX-TGA840BX 1.2.2. Power Supply Circuit The power is supplied to the DECT BBIC, RF Module, EEPROM and Charge Contact from AC Adaptor (+6.5 V) as shown in Fig.101. The power supply is as follows; • DECT BBIC (IC7): DC Jack (+6.5 V) →D1→ IC1 → IC7 DC Jack (+6.5 V) →D1→...
  • Page 5 KX-TG8411BXKX-TGA840BX 1.2.3. Telephone Line Interface <Function> • Bell signal detection • Clip signal detection • ON/OFF hook circuit Bell & Clip (: Calling Line Identification Presentation: Caller ID) signal detection: In the standby mode, Q3 is open to cut the DC loop current and decrease the ring load. When ring voltage appears at the L1T (A) and L1R (B) leads (when the telephone rings), the AC ring voltage is transferred as follows;...

  • Page 6: Block Diagram (Handset)

    KX-TG8411BX/KX-TGA840BX 1.3. Block Diagram (Handset)

  • Page 7: Power Supply Circuit/Reset Circuit

    KX-TG8411BXKX-TGA840BX 1.4. Circuit Operation (Handset) 1.4.1. Outline Handset consists of the following ICs as shown in Block Diagram (Handset) (P.6). • DECT BBIC (Base Band IC): IC1 - All data signals (forming/analyzing ACK or CMD signal) - All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, EEPROM, LCD, RF Power Amp.) - PLL Oscillator - Detector - Compress/Expander...

  • Page 8: Circuit Operation (Charger Unit)

    KX-TG8411BX/KX-TGA840BX 1.5. Circuit Operation (Charger Unit) 1.5.1. Power Supply Circuit The power supply is as shown.

  • Page 9: Signal Route

    KX-TG8411BXKX-TGA840BX 1.6. Signal Route...
  • Page 10 KX-TG8411BX/KX-TGA840BX memo:...

  • Page 11: For Schematic Diagram

    KX-TG8411BXKX-TGA840BX 2 Schematic Diagram 2.1. For Schematic Diagram 2.1.1. Base Unit (Schematic Diagram (Base Unit)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. The schematic diagrams may be modified at any time with the development of new technology. 2.1.2.

  • Page 12: Schematic Diagram (Base Unit)

    KX-TG8411BX/KX-TGA840BX 2.2. Schematic Diagram (Base Unit) #06A62 #06A62 #06A #06A )0& % % )0& 9 OO 9 OO .  OO .  OO $GGR )0& UV QT VJ NC[GT UV QT VJ NC[GT )0& $GNN UKIPCN &# 4 9 OO .  OO UV QT VJ NC[GT )0&...
  • Page 13 KX-TG8411BXKX-TGA840BX .QQR %WTTGPV .+0'A&% 4 & M  0% )0& )0& )0& % 4 62 )0& 4 M 4 M M )0& )0& )0& )0& )0& 8 / )0& )0& 8 M )0& )0& )0& )0& )0& *#-A%. )0& )0& )0&...

  • Page 14: Schematic Diagram (Handset)

    KX-TG8411BX/KX-TGA840BX 2.3. Schematic Diagram (Handset) Charge Current BATTERY BATT+ 5.6n C1 CP1 BATTERY 6.3V 330u To Battery C150 R330 BATT- C331 R331 C2 CP2 6.3V C332 330u R332 X_CLK 2.5V 4.0V CP+2.5V CP+4.0V CP2.5V CP4.0V 1.2k 3.9k K10u CHG(+) K0.1u...
  • Page 15 KX-TG8411BXKX-TGA840BX 9 OO .  OO 8 TF NC[GT /#:O# 4 4:10 8 8 . % )0& % 4:A4( -W #06A62 )0& 4(A4:P % % R )0& &# 4(A4:R )0& 9 OO )0& )0& )0& )0& )0& )0& )0& . OO )CR OO 9 OO 9 OO...

  • Page 16: Schematic Diagram (Charger Unit)

    KX-TG8411BX/KX-TGA840BX 2.4. Schematic Diagram (Charger Unit) R1 10 SCHEMATIC DIAGRAM (Charger Unit)

  • Page 17: Printed Circuit Board

    KX-TG8411BXKX-TGA840BX 3 Printed Circuit Board 3.1. Circuit Board (Base Unit_MAIN) 3.1.1. Component View 4 4 % 4 % % 4 % % % % % 4 4 4 % % 4 4 & % 4 & % % & % % 4 +%...

  • Page 18: Bottom View

    KX-TG8411BX/KX-TGA840BX 3.1.2. Bottom View &% &% 8&& %28 /*< %*) 8&& 8 %*)

  • Page 19: Circuit Board (Handset)

    KX-TG8411BXKX-TGA840BX 3.2. Circuit Board (Handset) 3.2.1. Component View 20.$< -:6)#:: '7 4'%'+8'4 4%8 4%8 % % & & % . 52'#-'4 % % % % % +% 4'& % & & 4 . % 4 4 ,6#) 4 6'56 % 4 % 4...
  • Page 20 KX-TG8411BX/KX-TGA840BX 3.2.2. Bottom View .'& 20.$< -:6)#:: '7 % 51(6A% 51(6A# 6#.- .'& .'& .'& .'& .'& .'& %#4$10A%. /+% /+%...

  • Page 21: Circuit Board (Charger Unit)

    KX-TG8411BXKX-TGA840BX 3.3. Circuit Board (Charger Unit) 3.3.1. Component View CIRCUIT BOARD (Charger unit (Component View)) 3.3.2. Bottom View TP4 (GND) CIRCUIT BOARD (Charger unit (Bottom View))

  • Page 22: Exploded View And Replacement Parts List

    KX-TG8411BX/KX-TGA840BX 4 Exploded View and Replacement Parts List 4.1. Replacement Part List Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) PCB1 PNWPG8411BXH MAIN P.C.BOARD ASS'Y (RTL) Note: F1K2H681A008 680p The “RTL” marking indicates that its Retention Time is ECUE1E472KBQ 0.0047...
  • Page 23 KX-TG8411BXKX-TGA840BX Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks PCB1 PNWPG8411BXH MAIN P.C.BOARD ASS'Y PCB1 PNWPG8411BXH MAIN P.C.BOARD ASS'Y (RTL) (RTL) C853 F1G1H2R0A480 0.2p ERJ1TYJ3R9U C855 ECUE1H100DCQ 10p ERJ2GEJ101 C856 ECUE1H101JCQ 100p ERJ2GEJ102 C857...
  • Page 24 KX-TG8411BX/KX-TGA840BX Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks RA61 D1H422120001 RESISTOR ARRAY ECUV1H100DCV 10p D4ZZ00000024 VARISTOR ECUE1A104KBQ 0.1 D4ZZ00000024 VARISTOR ECUE1A104KBQ 0.1 K1MN18BA0111 CONNECTOR ECUE1H100DCQ 10p K2HD103D0001 CONNECTOR ECUE1A104KBQ 0.1 J0JCC0000287 IC FILTER ECUE1A104KBQ 0.1...

  • Page 25: Fixtures And Tools

    KX-TG8411BXKX-TGA840BX 4.1.3. Charger Unit 4.1.3.1. Cabinet and Electrical Parts 4.1.3.2. Main P.C.Board Parts Safety Ref. Part No. Part Name & Description Remarks PCB200 PQWPTGA721CH MAIN P.C.BOARD ASS'Y (RTL) (DIODE) B0JAME000095 DIODE(SI) (JACK) K2ECYB000001 JACK (RESISTOR) ERG2SJ100E (FUSE) K5H302Y00003 FUSE 4.1.4. Screws Safety Ref.

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