Panasonic KX-TG7100FXS Service Manual

Contents

38KX-TG7100FXS/KX-TG7100FXT/KX-TG7102FXS/KX-TGA711FXS/KX-TGA711FXT(G)* Charge Detection (OFF)Check- 1. Stop supplying 3.5 V to J3 CHARGE(+) and J4 CHARGE(-).2. Execute the command “Backloff” then “charge”.3. Confirm that the returned value is 00 (hex).IC1, Q4, Q5,Q9, D6, D7,D8, L4,L5, R5, R6,R7, R8, F1(H)* Battery Monitor Check - 1. Apply 2.25 V between BATT and GND.2. Execute the command “readbatt”.It assumes that the return value is XX.a) 1E XX 2C: No need to adjustb) XX: 18 ~ 1D: Need to adjustXX: 2D ~ 32: Need to adjustWrite AD value of 2.25V to EEPROM.ex) read data: XX = 1D, write data: YY = 1Dread data: XX = 2D, write data: YY = 2DEEPROM = 0004(Low Voltage) write “YY”Execute the command “wreeprom 00 04 01 YY”.EEPROM = 0005(No Voltage) write “YY - 1D”Execute the command “wreeprom 00 05 01 ZZ”.EEPROM = 000A(Low Voltage BL) write “YY - 16”Execute the command “wreeprom 00 0A 01 WW”.Note:ZZ = YY - 1D, WW = YY - 16No Voltage writing data limit is ‘00’.c) XX: 00 ~ 17: RejectXX: 33 ~ FF: RejectIC1, F1, C1C3, R12(I) Battery Low Confirma-tion- 1. Apply 2.40 V between BATTERY(+) and BATTERY(-).2. Confirm that there is no flashing of Battery Icon.3. Apply 2.25 V ± 0.08 V between BATTERY(+) and BATTERY(-).4. Confirm that there is flashing of Battery Icon.IC1, F1, C1C3, R12(J)* BBIC Clock Adjustment CLK 1. Apply 2.6 V between BATTERY(+) and BATTERY(-) with DC power.2. Execute the command “conttx”.3. Input Command “rdeeprom 00 01 01”, then you can confirm the current value.4. Adjust the frequency of CLK executing the command “setfreq xx (where xx isthe value)” so that the reading of the frequency counter is 10.368000 MHz ± 10Hz.Note:CLK is displayed only for a few seconds when executing the command “conttx”after battery is inserted.IC1, X1, C6,C7, R19,IC4, C57(K)* Transmitted Power Con-firmation- Remove the Antenna before starting step from 1 to 4.1. Configure the DECT tester (CMD60) as follows;• Test mode: PP• RFPI: 0102030405• Traffic Carrier: 5• Traffic Slot: 4• Mode: Loopback• RF LEVEL = -70 dBm2. Execute the command “regcmd60 01 02 03 04 05".3. Initiate connection from DECT tester.4. Confirm that the NTP value at A201 is 19 dBm ~ 25 dBm.IC1, IC4, C66,C58, C57,C50, C52,C53,R52, C60,C61(L)* Modulation Check andAdjustment- Follow steps 1 to 3 of (K) above.4.Confirm that the B-Field Modulation is -350 ~ -400/+320 ~ +370 kHz/div usingdata type Fig 31.5.Adjust the B-Field Modulation if required. (Execute the command “Readmod”and “wrtmod xx”, where xx is the value.)IC1, IC4, C66,C58, C57,C50, C52,C53,R52, C60,C61(M) Frequency Offset Confir-mation- Follow steps 1 to 3 of (K) above.4.Confirm that the frequency Offset is < ± 45 kHz.IC1, IC4, C66,C58, C57,C50, C52,C53,R52, C60,C61(N) Frequency Drift Confir-mation- Follow steps 1 to 3 of (K).4.Confirm that the frequency Drift is < ± 30 kHz/ms.IC1, IC4, C66,C58, C57,C50, C52,C53,R52, C60,C61Items CheckPointProcedure Check orReplace Parts