Panasonic KX-TG1401UAH / KX-TG1401UAL / KX-TG1402UA3 / KX-TG1411UAM / KX-TG1411UAT / KX-TG1412UA1 / KX-TGA131RUH / KX-TGA131RUL / KX-TGA131RUM / KX-TGA131RUT Service Manual ▷ View online
25
KX-TG1401UA/KX-TG1402UA/KX-TG1411UA/KX-TG1412UA/KX-TGA131RU
(F)* Hookswitch Check with
DC Characteristics
-
1. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
Ω.
2. Set line voltage to 48V at on-hook condition and line current to 40mA at off-
hook condition of normal telephone.
3. Execute the command “hookoff”.
4. Confirm that the line current is 40mA ± 5mA.
5. Execute the command “hookon”.
6. Confirm that the line current is 0mA + 2mA.
4. Confirm that the line current is 40mA ± 5mA.
5. Execute the command “hookon”.
6. Confirm that the line current is 0mA + 2mA.
Career
module. C30,
C31, D2, Q3,
Q2, R26, R22,
R18, R15
module. C30,
C31, D2, Q3,
Q2, R26, R22,
R18, R15
(G)* DTMF Generator Check -
1. Connect J1 (Telephone Socket) to DTMF tester.
2. Execute the command “hookoff” and “dtmf_up”.
3. Confirm that the high frequency (1477.06Hz) group is -3 ± 2 dBm.
4. Execute the command “dtmf_lo”.
5. Confirm that the low frequency (852.05Hz) group is -6 ± 2 dBm.
2. Execute the command “hookoff” and “dtmf_up”.
3. Confirm that the high frequency (1477.06Hz) group is -3 ± 2 dBm.
4. Execute the command “dtmf_lo”.
5. Confirm that the low frequency (852.05Hz) group is -6 ± 2 dBm.
Career
module, R2,
C4, C5, R7,
R9, R10, C9,
R11, R13,
R12, R6, Q1,
D10, D1, Q3,
R26, R22, Q2,
R18, D2, C30,
C31
module, R2,
C4, C5, R7,
R9, R10, C9,
R11, R13,
R12, R6, Q1,
D10, D1, Q3,
R26, R22, Q2,
R18, D2, C30,
C31
(H)* Transmitted Power
Confirmation
-
Remove the Antenna before starting steps from 1 to 5.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: FP
• Traffic Channel: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• Traffic Channel: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
2. Execute the command “testmode”.
3. Initiate connection from DECT tester. (“set up connect”)
4. Execute the command “ANT”.
5. Confirm that the NTP value at ANT is 14dBm ~ 20dBm.
3. Initiate connection from DECT tester. (“set up connect”)
4. Execute the command “ANT”.
5. Confirm that the NTP value at ANT is 14dBm ~ 20dBm.
Career
module, C4,
C6, C2, C3,
C25, C8, C1,
C12, C13, C7,
L1, L2, C18,
C19, D1, C17,
R2, C23,
BASE module.
R43, R44, L2,
C38, C42, D6,
C39, C41
module, C4,
C6, C2, C3,
C25, C8, C1,
C12, C13, C7,
L1, L2, C18,
C19, D1, C17,
R2, C23,
BASE module.
R43, R44, L2,
C38, C42, D6,
C39, C41
(I)* Modulation Check and
Adjustment
ANT
Follow steps 1 to 3 of (H).
4. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/div using data
type Fig31.
5. Adjust the B-Field Modulation if required. (Execute the command “readmod”
and “wrtmod xx”, where xx is the value.)
type Fig31.
5. Adjust the B-Field Modulation if required. (Execute the command “readmod”
and “wrtmod xx”, where xx is the value.)
Career
module, C4,
C6, C2, C3,
C25, C8, C1,
C12, C13, C7,
L1, L2, C18,
C19, D1, C17,
R2, C23,
BASE module.
R43, R44, L2,
C38, C42, D6,
C39, C41
module, C4,
C6, C2, C3,
C25, C8, C1,
C12, C13, C7,
L1, L2, C18,
C19, D1, C17,
R2, C23,
BASE module.
R43, R44, L2,
C38, C42, D6,
C39, C41
(J)* Frequency Offset Check -
Follow steps 1 to 3 of (H).
4. Confirm that the frequency offset is -50kHz ~ +50kHz.
Career
module, C4,
C6, C2, C3,
C25, C8, C1,
C12, C13, C7,
L1, L2, C18,
C19, D1, C17,
R2, C23,
BASE module.
R43, R44, L2,
C38, C42, D6,
C39, C41
module, C4,
C6, C2, C3,
C25, C8, C1,
C12, C13, C7,
L1, L2, C18,
C19, D1, C17,
R2, C23,
BASE module.
R43, R44, L2,
C38, C42, D6,
C39, C41
(K)* Sensitivity Receiver
Confirmation
-
Follow steps 1 to 3 of (H).
4. Set DECT tester power to -84dBm.
5. Confirm that the BER is < 1000ppm.
5. Confirm that the BER is < 1000ppm.
Career
module, C4,
C6,
C2, C3, C25,
L3, L4, C15,
C20, R1, C21,
D1, C17, C20,
R1, C21, D1,
C17, BASE
module, R43,
R44, L2, C38,
C42, D6, C39,
C41
module, C4,
C6,
C2, C3, C25,
L3, L4, C15,
C20, R1, C21,
D1, C17, C20,
R1, C21, D1,
C17, BASE
module, R43,
R44, L2, C38,
C42, D6, C39,
C41
Items
Adjustment
Point
Procedure
Check or
Replace Parts
26
KX-TG1401UA/KX-TG1402UA/KX-TG1411UA/KX-TG1412UA/KX-TGA131RU
9.2.2.
Check Point (Charger Unit)
Note:
After the measuring, suck up the solder of TP.
The connection of adjustment equipment are as shown in Adjustment Standard (Charger Unit) (P.36).
The connection of adjustment equipment are as shown in Adjustment Standard (Charger Unit) (P.36).
(L)* Timing Confirmation
-
Follow steps 1 to 3 of (H).
4. Confirm that the Timing accuracy is < ± 2.0ppm.
Career
module, C4,
C6,
C2, C3, C25,
C8, C1, C12,
C13, C7, L1,
L2, C18, C19,
D1, C17, R2,
C23, BASE
module. R43,
R44, L2, C38,
C42, D6, C39,
C41
module, C4,
C6,
C2, C3, C25,
C8, C1, C12,
C13, C7, L1,
L2, C18, C19,
D1, C17, R2,
C23, BASE
module. R43,
R44, L2, C38,
C42, D6, C39,
C41
(M)* RSSI Level Confirmation -
Follow steps 1 to 3 of (H).
4. Set DECT tester power to -70dBm.
5. Execute the command “readrssi”.
6. Confirm: 25 < returned value < 43 (hex) (0E ± A (hex))
5. Execute the command “readrssi”.
6. Confirm: 25 < returned value < 43 (hex) (0E ± A (hex))
Career
module, C4,
C6,
C2, C3, C25,
L3, L4, C15,
C20, R1, C21,
D1, C17, C20,
R1, C21, D1,
C17, BASE
module, R43,
R44, L2, C38,
C42, D6, C39,
C41
module, C4,
C6,
C2, C3, C25,
L3, L4, C15,
C20, R1, C21,
D1, C17, C20,
R1, C21, D1,
C17, BASE
module, R43,
R44, L2, C38,
C42, D6, C39,
C41
(N) Charging Check
-
1. Connect Charge Contact 12
Ω/2W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 2.3V ± 0.2V.
F1, D5, R39,
D8, D9, C40
D8, D9, C40
(O)* Audio Check
-
1. Link with Handset.
2. Set line voltage to 48V and line current to 40mA.
3. Input -45dBm/1kHz to MIC of Handset.
2. Set line voltage to 48V and line current to 40mA.
3. Input -45dBm/1kHz to MIC of Handset.
Measure the Level at Line I/F and distortion level.
4. Confirm that the level is -9.5 ± 3dBm and that the distortion level is < 5% at TEL
Line (600
Ω Load).
5. Input -20dBm/1kHz to Line I/F.
Measure the level at Receiver of Handset and distortion level
(*Receive volume set to second position from minimum).
(*Receive volume set to second position from minimum).
6. Confirm that the level is -21.5 ± 3dBm and that the distortion level is < 5% at
Receiver (Volume Middle, 150
Ω Load).
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(A) Charging Check
-
1. Connect Charge Contact 10
Ω/2W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 2.75 V ± 0.3 V.
R1, D1, F1
Items
Adjustment
Point
Procedure
Check or
Replace Parts
27
KX-TG1401UA/KX-TG1402UA/KX-TG1411UA/KX-TG1412UA/KX-TGA131RU
9.3.
Troubleshooting by Symptom (Handset)
If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not.
(*1) or not.
Note:
(*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic
level in detail.
(*2) Refer to Check Point (Handset) (P.27)
level in detail.
(*2) Refer to Check Point (Handset) (P.27)
9.3.1.
Check Point (Handset)
Please follow the items below when BBIC or EEPROM is replaced.
Note:
After the measuring, suck up the solder of TP.
*: The Setting Method of JIG (Handset) (P.37) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Handset) (P.39).
*: The Setting Method of JIG (Handset) (P.37) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Handset) (P.39).
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(A) Battery Supply
Confirmation
-
1. Confirm that the consumption current is < 200mA, that is, there is no short
circuit.
C143, R102,
L104, C145,
C132, C131,
C140, C146,
L103, IC101,
C141, C102,
C103, C120,
D107, C109,
C125
L104, C145,
C132, C131,
C140, C146,
L103, IC101,
C141, C102,
C103, C120,
D107, C109,
C125
(B) 3.3V Supply
Confirmation
-
1. Confirm that the voltage between 3.3V and GND is 3.3V ± 0.3V.
L103, IC101,
C141, C102,
C103, R107,
Career module
C141, C102,
C103, R107,
Career module
(C)* BBIC Confirmation
-
1. BBIC Confirmation (Execute the command “getchk”).
2. Confirm the returned checksum value.
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
Career
module, X101,
C122, C123
module, X101,
C122, C123
(D) Charge Control Check &
Charge Current Monitor
Check
Check
-
1. Apply 6V between TP5(+) and TP6(-) with current limit of PSU to 250mA.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 75mA.
4. Confirm that the charge current is stable.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 75mA.
4. Confirm that the charge current is stable.
C100, Q101,
Q102, R101,
C142, R108,
Career module
Q102, R101,
C142, R108,
Career module
(E)* Charge Detection (OFF)
Check
-
1. Stop supplying 6V to TP5(+) and TP6(-).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).
C100, Q101,
Q102, R101,
C142, R108,
Career module
Q102, R101,
C142, R108,
Career module
(F)* Battery Monitor Check &
Adjustment (Important)
-
1. Apply 2.3V ± 0.005V between BATTERY (+) and BATTERY (-) with DC power.
2. Execute the command “deactmac” to stabilize the value.
3. Then, execute the command “readbatt”. The returned value is XX.
4. Confirm that XX is between 90 and A0.
2. Execute the command “deactmac” to stabilize the value.
3. Then, execute the command “readbatt”. The returned value is XX.
4. Confirm that XX is between 90 and A0.
90 < XX < A0 (Hex)
(If XX is out of range, change BBIC)
(If XX is out of range, change BBIC)
Career
module, D107,
C109, C125
module, D107,
C109, C125
28
KX-TG1401UA/KX-TG1402UA/KX-TG1411UA/KX-TG1412UA/KX-TGA131RU
(G) Battery Low
Confirmation (Important)
-
1. Apply 2.40V between BATTERY (+) and BATTERY (-).
2. Confirm that there is no Speaker sound (Battery low alarm).
3. Apply 2.1V between BATTERY(+) and BATTERY(-).
4. Confirm that there is Speaker sound (Battery low alarm).
2. Confirm that there is no Speaker sound (Battery low alarm).
3. Apply 2.1V between BATTERY(+) and BATTERY(-).
4. Confirm that there is Speaker sound (Battery low alarm).
Career
module,D107,
C109, C125,
R117, R116,
C125, R117,
R116, Q104,
Q105, D104,
R115,
BUZZER
module,D107,
C109, C125,
R117, R116,
C125, R117,
R116, Q104,
Q105, D104,
R115,
BUZZER
(H)* BBIC Clock Adjustment
(Important)
P1.0
CLK
CLK
1. Apply 2.6V between BATTERY (+) and BATTERY (-) with DC power.
2. Execute the command “EnableClockOutput”.
3. Input Command “rdeeprom 00 00 02", then you can confirm the current value.
4. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
5. If the frequency is not 10.368 MHz ± 100 Hz, adjust the frequency of CLK
2. Execute the command “EnableClockOutput”.
3. Input Command “rdeeprom 00 00 02", then you can confirm the current value.
4. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
5. If the frequency is not 10.368 MHz ± 100 Hz, adjust the frequency of CLK
executing the command “setfreq sfr xx xx (where xx is the value)” so that the
reading of the frequency counter is 10.368000 MHz ± 5 Hz.
Note:
Clear the registered information for Base Unit before measurement, because
the Frequency will not possibly get stable due to the registered information.
Pressing the button of “3” “7” “9” “#” clears the registration. Register to it on
Base Unit after measurement.
reading of the frequency counter is 10.368000 MHz ± 5 Hz.
Note:
Clear the registered information for Base Unit before measurement, because
the Frequency will not possibly get stable due to the registered information.
Pressing the button of “3” “7” “9” “#” clears the registration. Register to it on
Base Unit after measurement.
C127, C122,
C123, X101
C123, X101
(I)* Transmitted Power
Confirmation
ANT
Remove the Antenna before starting steps from 1 to 5.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: PP
• RFPI: 0102030405
• Traffic Channel: 5
• Traffic Slot: 4
• Mode: Loopback
• RFPI: 0102030405
• Traffic Channel: 5
• Traffic Slot: 4
• Mode: Loopback
2. Execute the command “regcmd60”.
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is -19dBm ~ 25dBm.
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is -19dBm ~ 25dBm.
Career
module, R1,
R2, C21, C23,
L3, L4, C15,
C20, D2, C17
module, R1,
R2, C21, C23,
L3, L4, C15,
C20, D2, C17
(J)* Modulation Check
ANT
Follow steps 1 to 4 of (I).
4. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/div using data
type Fig31.
type Fig31.
Career
module, R1,
R2, C21, C23,
L3, L4, C15,
C20, D2, C17
module, R1,
R2, C21, C23,
L3, L4, C15,
C20, D2, C17
(K)* Frequency Offset
Confirmation
-
Follow steps 1 to 4 of (I).
4. Confirm that the frequency offset is -50kHz ~ +50kHz.
Career
module, R1,
R2, C21, C23,
L3, L4, C15,
C20, D2, C17
module, R1,
R2, C21, C23,
L3, L4, C15,
C20, D2, C17
(L)* Sensitivity Receiver
Confirmation
-
Follow steps 1 to 4 of (I).
4. Set DECT tester power to -85dBm.
5. Confirm that the BER is < 1000ppm.
5. Confirm that the BER is < 1000ppm.
R1, R2, C21,
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17
(M)* Timing Confirmation
-
Follow steps 1 to 4 of (I).
4. Confirm that the Timing accuracy is < ± 2.0ppm.
R1, R2, C21,
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17
(N)* RSSI Level Confirmation -
Follow steps 1 to 4 of (I).
4. Set DECT tester power to -70dBm.
5. Execute the command “readrssi”.
6. Confirm: 9 < returned value < 13 (hex) (0E ± 5 (hex))
5. Execute the command “readrssi”.
6. Confirm: 9 < returned value < 13 (hex) (0E ± 5 (hex))
R1, R2, C21,
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17
(O) Audio Check and
Confirmation
-
1. Link to BASE which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 40mA.
3. Input -45dBm/1KHz to MIC and measure Line output level.
4. Confirm that the level is -9.5 ± 3dBm and that the distortion level is < 5% at TEL
2. Set line voltage to 48V and line current to 40mA.
3. Input -45dBm/1KHz to MIC and measure Line output level.
4. Confirm that the level is -9.5 ± 3dBm and that the distortion level is < 5% at TEL
Line (600
Ω Load).
5. Input -20dBm/1KHz to Line I/F and measure Receiving level at SP+ and SP-.
6. Confirm that the level is -21.5 ± 3dBm and that the distortion level is < 5% at
6. Confirm that the level is -21.5 ± 3dBm and that the distortion level is < 5% at
Receiver. (vol = middle, 150
Ω Load)
Items
Adjustment
Point
Procedure
Check or
Replace Parts
Click on the first or last page to see other KX-TG1401UAH / KX-TG1401UAL / KX-TG1402UA3 / KX-TG1411UAM / KX-TG1411UAT / KX-TG1412UA1 / KX-TGA131RUH / KX-TGA131RUL / KX-TGA131RUM / KX-TGA131RUT service manuals if exist.