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Panasonic KX-TGA20B Service Manual

Other manuals for KX-TGA20B: Service Manual
Manual is about: Handset/Base Unit

Summary of KX-TGA20B

  • Page 1

    © panasonic system networks co., ltd. 2013 unauthorized copying and distribution is a violation of law. Order no. Km41302655ce f13 telephone equipment model no. Kx-tg7841s kx-tg7842s kx-tg7843s kx-tg7844s kx-tg7845s kx-tg365sk kx-tg7871s kx-tg7872s kx-tg7873s kx-tg7874s kx-tg7875s kx-tg385sk kx-tga6...

  • Page 2

    2 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 warning this service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings o...

  • Page 3: Table of Contents

    3 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 table of contents page page 1 safety precautions----------------------------------------------- 5 1.1. For service technicians --------------------------------- 5 2 w...

  • Page 4

    4 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15.1.1. Component view ------------------------------------ 83 15.1.2. Bottom view ------------------------------------------ 84 15.2. Circuit board (base unit_operat...

  • Page 5: 1 Safety Precautions

    5 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 1 safety precautions 1.1. For service technicians • repair service shall be provided in accordance with repair technology information such as service manual so as to ...

  • Page 6

    6 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 2.2.1. Suggested pbf solder there are several types of pbf solder available commercially. While this product is manufactured using tin, silver, and copper (sn+ag+cu),...

  • Page 7: 3 Specifications

    7 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 3 specifications note: (*1) kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk (*2) kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk design and ...

  • Page 8: 4 Technical Descriptions

    8 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4 technical descriptions 4.1. Circuit configuration of tg78xx series phones tg78xx consists of dect cordless telephone and bluetooth module. Both voices of transmissi...

  • Page 9

    9 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.2. Us-dect description the frequency range of 1.92 ghz-1.93 ghz is used. Transmitting and receiving carrier between base unit and handset is same frequency. Refer t...

  • Page 10

    10 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.2.3. Signal flowchart in the radio parts reception base unit: a voice signal from tel line is encoded to digital data and converted into a 1.9ghz modulated radio s...

  • Page 11

    11 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.3. Block diagram (base unit_main) kx-tg7841/7842/7843/7844/7845/365/7871/7872/7873/7874/7875/385 block diagram (base unit_main) side_tone circuit crystal 10.368mhz...

  • Page 12

    12 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.4. Tel interface circuit tx amp side tone rx amp control circuit caller id detect bell detect p101 r141 r142 3 4 2 1 c101 d101 q141 c102 r101 c103 r102 sa101 tip r...

  • Page 13

    13 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.5. Block diagram (base unit_rf part) kx-tg7841/7842/7843/7844/7845/365/7871/7872/7873/7874/7875/385 block diagram (base unit_rf part) 10.368 mhz ic501 rf block txd...

  • Page 14

    14 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.6. Circuit operation (base unit) general description: (bbic, flash memory, eerrom) is a digital speech/signal processing system that implements all the functions o...

  • Page 15

    15 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.6.6. Power supply circuit/reset circuit the power supply voltage from ac adaptor is converted to vbat (3.0v) in ic302. And +3.0v for peripherals and analog part is...

  • Page 16

    16 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.6.6.1. Charge circuit the voltage from the ac adaptor is supplied to the charge circuits. D361 r372 d362 r371 charge+ r373 c351 f301 dcp charge- ( ) +5.5v dcm k a.

  • Page 17

    17 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.6.7. Telephone line interface telephone line interface circuit: function • bell signal detection • on/off hook and pulse dial circuit • side tone circuit bell (rin...

  • Page 18

    18 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.6.8. Parallel connection detect circuit/auto disconnect circuit function: in order to disable call waiting and stutter tone functions when using telephones connect...

  • Page 19

    19 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.6.9. Calling line identification (caller id)/call waiting caller id function: caller id the caller id is a chargeable id which the user of a telephone circuit obta...

  • Page 20

    20 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 call waiting caller id calling identity delivery on call waiting (cidcw) is a class service that allows a customer, while off-hook on an existing call, to receive in...

  • Page 21

    21 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.7. Block diagram (handset) ic1 ic3 mip min hsspoutp lout hsmip headset_det spoutp spoutn ckm//stm ckm/stm bbic reset chg_ctl battery_on chg_det wp, clk, data keyst...

  • Page 22

    22 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.8. Block diagram (handset_rf part) kx-tga680 block diagram (handset_rf part) rxp rxn ant txp txn.

  • Page 23

    23 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.9. Circuit operation (handset) 4.9.1. Outline handset consists of the following ics as shown in block diagram (handset) (p.21). • dect bbic (base band ic): ic1 - a...

  • Page 24

    24 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.9.3. Charge circuit circuit operation: when charging the handset on the base unit, the charge current is as follows; dcp(5.5v) → f301 → r371 → r372 → d362 → charge...

  • Page 25

    25 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.10. Behavior of electric power failure in case that the power from ac adaptor is lost and lose radio waves, bbic (ic1) turns q11 on since handset presumes that bas...

  • Page 26

    26 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 4.12. Signal route note: : inside of handset cellular tx ant. - - ic501(2/3 - 80) - ic721(31 - 19) - ant_bt - cell phone cellular rx cell phone - ant_bt - ic721(19 -...

  • Page 27

    27 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 rf part signal route greeting recording greeting play to tel line icm recording icm play to speaker dtmf signal to tel line caller id bell detection handset mic - c1...

  • Page 28: 6 Installation Instructions

    28 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 5 location of controls and components refer to the operating instructions. Note: you can download and refer to the operating instructions (instruction book) on tsn s...

  • Page 29: 8 Test Mode

    29 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 8 test mode 8.1. Engineering mode 8.1.1. Base unit important: make sure the address on lcd is correct when entering new data. Otherwise, you may ruin the unit. 1). P...

  • Page 30

    30 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 frequently used items (base unit) ex.) note: (*1) when you enter the address or new data, please refer to the table below. Items address default data new data remark...

  • Page 31

    31 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 8.1.2. Handset important: make sure the address on lcd is correct when entering new data. Otherwise, you may ruin the unit. H/s key operation h/s lcd 1). Press { men...

  • Page 32

    32 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 frequently used items (handset) ex.) note: (*1) when you enter the address or new data, please refer to the table below. (*2) use these items in a read-only mode to ...

  • Page 33: 9 Service Mode

    33 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 9 service mode 9.1. How to clear user setting (handset only) handset press , , , simultaneously until a beep sound is heard. Then single handset is initialized. (the...

  • Page 34: 10 Troubleshooting Guide

    34 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10 troubleshooting guide 10.1. Troubleshooting flowchart cross reference: check power (p.35) check record (p.36) check playback (p.39) check battery charge (p.39) ch...

  • Page 35

    35 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.1. Check power 10.1.1.1. Base unit cross reference: power supply circuit/reset circuit (p.15) note: bbic is ic501. (*1) refer to specifications (p.7) for part n...

  • Page 36

    36 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.2. Check record 10.1.2.1. Base unit not record incoming message cross reference: signal route (p.26) telephone line interface (p.17) parallel connection detect ...

  • Page 37

    37 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 a) auto disconnect activation time: some telephone company lines (fiber or cable) on hook and off hook voltages are lower than conventional lines, which may cause a ...

  • Page 38

    38 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 b) vox level: it makes easier to detect a small voice (caller) by raising the sensitivity of vox level. Therefore, the recording of tam is not turned off during dete...

  • Page 39

    39 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.3. Check playback 10.1.3.1. Base unit cross reference: power supply circuit/reset circuit (p.15) note: flash memory is ic601. Bbic is ic1. (*1) refer to circuit...

  • Page 40

    40 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.5. Check link 10.1.5.1. Base unit cross reference: power supply circuit/reset circuit (p.15) check the rf part (p.42) note: refer to things to do after replacin...

  • Page 41

    41 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.5.2. Handset cross reference: power supply circuit/reset circuit (p.23) check the rf part (p.42) note: refer to things to do after replacing ic or x'tal (p.58)(...

  • Page 42

    42 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.6. Check the rf part 10.1.6.1. Finding out the defective part after all the checkings or repairing 1. Re-register the checked handset to the checked base unit, ...

  • Page 43

    43 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.6.2. Rf check flowchart each item (1 ~ 5) of rf check flowchart corresponds to check table for rf part (p.44). Please refer to the each item. Note: (*1) refer t...

  • Page 44

    44 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.6.3. Check table for rf part note: (*1) refer to commands (p.60) (*2) adjustment standard (base unit) (p.61) (*3) adjustment standard (handset) (p.62) no. Item ...

  • Page 45

    45 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.6.4. Test range check circuit block which range is defective can be found by the following check. Chart1: setting of tx power and rx sensitivity in range confir...

  • Page 46

    46 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.7. Registering a handset to the base unit 10.1.8. Deregistering a handset {menu} i # 1 3 0 l l l l the supplied handset and base unit are pre-registered. If for...

  • Page 47

    47 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.9. Check handset transmission cross reference: signal route (p.26) 10.1.10. Check handset reception cross reference: signal route (p.26) note: when checking the...

  • Page 48

    48 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 10.1.12. Check bt communication cross reference: bottom view (p.84) plug in the ac power source and wait 10 seconds. Is it possible to enter the "bluetooth" menu? Is...

  • Page 49

    49 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 cross reference: schematic diagram (base unit_rf) (p.76) note: (*2) after replacing, need to adjust the frequency of bt. Refer to things to do after replacing ic or ...

  • Page 50

    50 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 11 disassembly and assembly instructions 11.1. Disassembly instructions 11.1.1. Base unit cabinet cover solders 5 screws main p.C. Board pararell wire Ԙ remove the 5...

  • Page 51

    51 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 2 screws jack holder operational p.C.B board 4 screws ԛ remove the 2 screws to remove the jack holder. Ԝ remove the 4 screws to remove the operational p.C.B board..

  • Page 52

    52 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 11.1.2. Handset remove the 2 screws. Insert a jig (pqdj10006y) between the cabinet body and the cabinet cover, then pull it along the gap to open the cabinet. Likewi...

  • Page 53

    53 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 11.1.3. Charger unit 2 charge terminals Ԙ unhook the click of one side. ԙ then unhook the other one..

  • Page 54

    54 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 11.2. How to replace the base unit lcd Ԙ ԙ fit the heatseal of a new lcd. Rubber of soldering iron (part no. Pqzz430prb) tip of soldering iron (part no. Pqzz430pir) ...

  • Page 55

    55 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 Ԛ ԛ attach the lcd and fix by hook a (two points). Solder the wires. A a.

  • Page 56

    56 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 11.3. How to replace the handset lcd note: the illustrations are simplified in this page. They may differ from the actual product. Peel off the ffc (flexible flat ca...

  • Page 57

    57 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12 measurements and adjustments this chapter explains the measuring equipment, the jig connection, and the pc setting method necessary for the measurement in trouble...

  • Page 58

    58 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.2.2. Connections (handset) connect the dc power or battery to batt+ and batt-. Connect the jig cable gnd (black) to gnd. Connect the jig cable utx (yellow) to utx...

  • Page 59

    59 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.2.3. How to install batch file into p.C. Note: • “*****” varies depending on the country or models. 1. Insert the batch file cd-rom into cd-rom drive and copy pnz...

  • Page 60

    60 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.2.4. Commands see the table below for frequently used commands. Command name function example rdeeprom read the data of eeprom type “rdeeprom 00 00 ff”, and the d...

  • Page 61

    61 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.3. Adjustment standard (base unit) when connecting the simulator equipment for checking, please refer to below. 12.3.1. Bottom view note: (*1) refers to no.2 of c...

  • Page 62

    62 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.4. Adjustment standard (handset) when connecting the simulator equipment for checking, please refer to below. 12.4.1. Component view note: (*1) refers to no.2 of ...

  • Page 63

    63 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.5. Things to do after replacing ic or x'tal if repairing or replacing eeprom and x'tal, it is necessary to download the required data such as programming data or ...

  • Page 64

    64 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk note: (*1) xxx_yyy: revision number, zzz:voice prompt, aa: baud rate(9600/19200/57600/115200) "xxx_yyy a...

  • Page 65

    65 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.5.1.2. Handset first, operate the pc setting according to the setting method of jig (p.57). Then download the appropriate data according to the following procedur...

  • Page 66

    66 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.6. Frequency table ch. (hex) tx/rx frequency (mhz) channel 0 00 1928.448 channel 1 01 1926.720 channel 2 02 1924.992 channel 3 03 1923.264 channel 4 04 1921.536.

  • Page 67

    67 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 12.7. Bluetooth frequency table ch. Frequency (mhz) ch. Frequency (mhz) ch. Frequency (mhz) 0 2402 33 2435 66 2468 1 2403 34 2436 67 2469 2 2404 35 2437 68 2470 3 24...

  • Page 68: 13 Miscellaneous

    68 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 13 miscellaneous 13.1. How to replace the llp (leadless leadframe package) ic note: this description only applies to the model with shield case. 13.1.1. Preparation ...

  • Page 69

    69 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 13.1.4. How to install the ic 1. Place the solder a little on the land where the radiation gnd pad on ic bottom is to be attached. 2. Place the solder a little on th...

  • Page 70

    70 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 13.2. How to replace the flat package ic even if you do not have the special tools (for example, a spot heater) to remove the flat ic, with some solder (large amount...

  • Page 71

    71 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 13.2.3. How to install the ic 1. Temporarily fix the flat package ic, soldering the two marked pins. *check the accuracy of the ic setting with the corresponding sol...

  • Page 72

    72 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 13.3. Terminal guide of the ics, transistors and diodes 13.3.1. Base unit note: (*1) kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk (*2) kx-tg7871/kx-t...

  • Page 73: 14 Schematic Diagram

    73 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 14 schematic diagram 14.1. For schematic diagram 14.1.1. Base unit (schematic diagram (base unit_main)) notes: 1. Dc voltage measurements are taken with voltmeter fr...

  • Page 74

    74 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 14.2. Schematic diagram (base unit_main) nc: no components pcm_fsc pcm_do pcm_di pcm_clk bt_rst spi_di spi_do spi_clk tam_csn bt_utx scl2 charge_det sda2 bt_utx bt_u...

  • Page 75

    75 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 ic501 qspi_cs qspi_io3 qspi_io2 qspi_sck qspi_io1 spi2_clk lcd_cs qspi_sck qspi_io3 qspi_io2 qspi_io1 qspi_io0 qspi_cs lcd_cd lcd_rst qspi_io0 charge_det eep_wp spi2...

  • Page 76

    76 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 14.3. Schematic diagram (base unit_rf) rf_rxn gnd oj2 gnd ant2 oj6 rf_rxp gnd ant1_tp 12 gnd gnd c859 10p oj1 gnd oj5 rf_txp ant1 ant2_tp 12 oj4 rf_txn za1 nc 1 2 6 ...

  • Page 77

    77 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 14.4. Schematic diagram (base unit_operation) msg skip down rpt up pcb carbon_test ct1 *led912 green a k gnd ct2 key_pcb+ key_pcb- lcd_light *led911 green a k cn901 ...

  • Page 78

    78 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 14.5. Schematic diagram (base unit_usb charge) 14.6. Schematic diagram (base unit_led) nc: no components kx-tg7841/7842/7843/7844/7845/365/7871/7872/7873/7874/7875/3...

  • Page 79

    79 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 memo.

  • Page 80

    80 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 14.7. Schematic diagram (handset_main) stb_d kin_4 chg_cur stb_e stb_cstb_c key_led eep_wp eep_scl eep_sda eep_wp stb_d lcd_reset lcd_sid lcd_scl lcd_cs lcd_cd kin_1...

  • Page 81

    81 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 nc: no components kx-tga680 schematic diagram (handset_main) chg_det chg_ctrl headset_det c97 10p c96 10p c42 nc c39 nc c52 d10p c53 12p r1 nc gnd gnd gnda r27 2.2k ...

  • Page 82

    82 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 memo.

  • Page 83: 15 Printed Circuit Board

    83 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15 printed circuit board 15.1. Circuit board (base unit_main) 15.1.1. Component view msg_ledm s g _l e d q661 q662 lcd_bltlc d _b lt p101 rstn lcd_vddlc d _v d d key...

  • Page 84

    84 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15.1.2. Bottom view for jig gnd spn spp dcp urx utx ant_bt mip min stm/ckm/p15 (clk:13.824mhz) r601 tp_ant_bt bt_mdo ra101 dcm dcp ant2-short c601 r451 c610 c611 cha...

  • Page 85

    85 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15.2. Circuit board (base unit_operation) a lcd # * redial 0 1 4 7 2 5 8 3 6 9 loca t msg sp-phone led901 led902 led904 do wn cell1 cell2 r906 st op c901 c902 flash ...

  • Page 86

    86 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15.3. Circuit board (base unit_usb charge) 15.4. Circuit board (base unit_led) a pnlb2177z ޓ-ig r1002 r1001 f1001 r1004 r1003 pbf kx-tg7841/7842/7843/7844/7845/365/7...

  • Page 87

    87 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15.5. Circuit board (handset_main) 15.5.1. Component view c20 c21 c22 c23 c24 c25 c26 c27 c29 c30 c31 c32 c33 c34 c35 c36 c37 rtck c39 3.0v c41 c42 c43 c44 ant-short...

  • Page 88

    88 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 15.5.2. Bottom view cn3_c 0 1 3 2 4 ast 5 6 7 8 9 led1 led3 led2 led4 led5 led6 led20 left down flash right nr sp off sharp up mic soft_a soft_c talk kx-tga680 circu...

  • Page 89

    89 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16 exploded view and replacement parts list 16.1. Cabinet and electrical parts (base unit) note: (*1) this cable is fixed by heat-sealing. Refer to how to replace th...

  • Page 90

    90 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.2. Cabinet and electrical parts (handset) note: (*1) this cable is fixed by heat-sealing. Refer to how to replace the handset lcd (p.56). (*2) the rechargeable ni...

  • Page 91

    91 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.3. Cabinet and electrical parts (charger unit) 200 200-1 200-2 200-3 200-4 200-2 200-5 201.

  • Page 92

    92 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4. Accessories and packing materials 16.4.1. Kx-tg7841s a3, a4 p2 p2 p2 p2 p2 p2 a2 a1 a5 p1.

  • Page 93

    93 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.2. Kx-tg7842s a103, a104 p102 p102 a101 (*1) a102 a105 p101 p102 note: (*1) this pad is a piece of ref no.P101 (gift box)..

  • Page 94

    94 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.3. Kx-tg7843s a201 a202 p201 a205 a203, a204 p202 p202 p202 p202 p202 p202 p202.

  • Page 95

    95 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.4. Kx-tg7844s a303, a304 p302 p302 p302 a302 a301 a305 p301 p302 p302 p302 p302 p302.

  • Page 96

    96 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.5. Kx-tg7845s a401 p401 p402 p402 a402 a405 a403, a404 p402 p402 p402 p402 p402 p402 p402 p402.

  • Page 97

    97 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.6. Kx-tg365sk a501 a502 a503, a504 a505.

  • Page 98

    98 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.7. Kx-tg7871s a603, a604 p602 p602 p602 p602 p602 p602 a602 a601 a605 p601.

  • Page 99

    99 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.8. Kx-tg7872s a703, a704 (*1) p702 p702 a701 a702 a705 p701 (*1) p702 note: (*1) this pad is a piece of ref no.P701 (gift box)..

  • Page 100

    100 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.9. Kx-tg7873s a801 a802 p801 a805 a803, a804 p802 p802 (*1) p802 p802 p802 p802 p802 note: (*1) this pad is a piece of ref no.P801 (gift box)..

  • Page 101

    101 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.10. Kx-tg7874s a903, a904 (*1) p902 a902 a901 a905 p901 p902 p902 p902 p902 note: (*1) this pad is a piece of ref no.P901 (gift box)..

  • Page 102

    102 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.11. Kx-tg7875s p1001 p1002 p1002 a1002 p1002 a1005 a1003, a1004 p1002 p1002 p1002 p1002 p1002 p1002 (*1) p1002 a1001 note: (*1) this pad is a piece of ref no.P...

  • Page 103

    103 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.12. Kx-tg385sk a1101 a1102 a1103, a1104 a1105.

  • Page 104

    104 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.4.13. Kx-tga680s note: (*1) this pad is a piece of ref no.P1201 (gift box). P1201 p1202 (*1) a1202 a1201.

  • Page 105

    105 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.5. Replacement parts list 1. Rtl (retention time limited) note: the “rtl” marking indicates that its retention time is limited. When production is discontinued, ...

  • Page 106

    106 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.5.1.2. Main p.C. Board parts note: (*1) when replacing ic501, ic502, ic601, ic611 or x501, make the adjustment using pnzztg7871m. Refer to how to download the da...

  • Page 107

    107 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.5.1.3. Operational p.C. Board parts 16.5.1.4. Usb charge p.C. Board parts 16.5.1.5. Led board parts 16.5.2. Handset 16.5.2.1. Cabinet and electrical parts r735 e...

  • Page 108

    108 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.5.2.2. Main p.C. Board parts note: (*1) reconfirm the model no. Written on the handset's name plate when replacing pcb100. Because the model no. Of the optional ...

  • Page 109

    109 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.5.3. Charger unit 16.5.3.1. Cabinet and electrical parts 16.5.4. Accessories and packing materials note: (*1) you can download and refer to the operating instruc...

  • Page 110

    110 kx-tg7841/kx-tg7842/kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680 16.5.4.10. Kx-tg7874s 16.5.4.11. Kx-tg7875s 16.5.4.12. Kx-tg385sk 16.5.4.13. Kx-tga680s 16.5.5. Screws 16.5.6. Fixtures and tools note: (*1) see equipment required ...

  • Page 111: Telephone Equipment

    © panasonic system networks co., ltd. 2014 unauthorized copying and distribution is a violation of law. Order no. Km41401291se f13 telephone equipment model no. Kx-tg7841s kx-tg7842s kx-tg7843s kx-tg7844s kx-tg7845s kx-tg365sk kx-tg7871s kx-tg7872s kx-tg7873s kx-tg7874s kx-tg7875s kx-tg385sk kx-tga6...

  • Page 112: Table of Contents

    2 kx-tg7841/kx-tg7842kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680/kx-tga20 table of contents page 1 replacement parts list ---------------------------------3 1.1. Reference chart ------------------------------------3 1.2. Original an...

  • Page 113: 1 Replacement Parts List

    3 kx-tg7841/kx-tg7842kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680/kx-tga20 1 replacement parts list 1.1. Reference chart 1.2. Original and new parts comparison lists reason for change *the following items (1-8) indicate the reason fo...

  • Page 114

    4 kx-tg7841/kx-tg7842kx-tg7843/kx-tg7844/kx-tg7845/kx-tg365sk/kx-tg7871/kx-tg7872/kx-tg7873/kx-tg7874/kx-tg7875/kx-tg385sk/kx-tga680/kx-tga20 oy kxtg7841s kxtg7842s kxtg7843s kxtg7844s kxtg7845s kxtg365sk kxtg7871s kxtg7872s kxtg7873s kxtg7874s kxtg7875s kxtg385sk kxtga680s kx-tga20b.