Panasonic KX-TG1107UAJ / KX-TG1107UAM / KX-TGA110UAJ / KX-TGA110UAM Service Manual ▷ View online
8.3.2. Flow Solder Side View
Digital
Volt Meter
Volt Meter
PC
I2C PCB
(*1)
(JIG)
Digital
Volt Meter
Volt Meter
DC POWER
6V
Digital
Volt Meter
Frequency
Counter
Counter
Digital
Volt Meter
Volt Meter
Digital
Volt Meter
Volt Meter
SDA
SCL GND
VBACK
GND
GND
TP187
GND
CHARGE+
12
2w
GND
GND
TP1
TP10
TP101
GND
GND
TP91
GND
TP45
DTMF
Tester
Tester
Call - ID
Simulator
Simulator
BELL
Simulator
Simulator
LOOP
Simulator
Simulator
AF
OSC
AF VOLT
METER
OSC
600
TP3
TP40
(A)
(D) (E) (F) (G)
(H) (N) (O)
(H) (N) (O)
(C)
(P)
(E)
(H)
(B)
(G)
TP1
TP10
TP97
TP82
TP187
TP91
C99
TP188
TP101
TP89
TP2
1
2
4
6
TP5
TP90
TP50
TP45
TP3
TP39
TP40
PbF
+2.65V
SDA
SCL
GND
VBACK
CHARGE
CHARGE
Note:
(A) - (P) is referred to Check Point (Base Unit) (P.22)
(*1) Refer to Connections (P.26)
KX
-T
G110
7UAJ
/
K
X
-T
G
1107U
AM
/
K
X
-T
G
A110U
AJ
/
K
X
-T
G
A1
10UAM
10UAM
29
9 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.
level in detail.
(*2) Refer to Check Point (Handset) (P.30)
9.1. Check Point (Handset)
Please follow the items below when BBIC or EEPROM is replaced.
Note:
After the measuring, suck up the solder of TP.
*: PC Setting (P.33) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Handset) (P.35).
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(A)
4.0V Supply
Confirmation
-
1.
Confirm that the consumption current is < 200mA, that is, there is no short
circuit.
circuit.
2.
Confirm that the voltage between TP4V and GND is 4.1V ± 0.2V.
IC4, F1, R21,
R4, C1, L2,
D1, C15, C33,
C34, C14, Q1,
C34, C14, Q1,
R111, R2,
C26, X1, C16,
C17
(B)
VBACK Status
Confirmation
-
1.
Confirm that the voltage between VBACK and GND is 0V ± 0.4V.
IC4, F1, R21,
R4, C1, L2,
D1, C15, C33,
C34, C14, Q1,
C34, C14, Q1,
R111, R2,
C26, X1, C16,
C204
(C)*
BBIC Confirmation
-
1.
BBIC Confirmation (Execute the command “getchk”).
2.
Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC4, X1, C16,
C204
(D) Charge Control Check &
Charge Current Monitor
Check
-
1.
Apply 6V between TP20(+) and TP21(-) 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 100mA.
4.
Confirm that the charge current is stable.
IC4, D2, L4,
L5, Q2, Q3,
R6, C26, F1,
R21, R4, C1
(E)* Charge Detection (OFF)
Check
-
1.
Stop supplying 6V to TP20(+) and TP21(-).
2.
Execute the command “charge”.
3.
Confirm that the returned value is 00 (hex).
IC4, D2, L4,
L5, Q2, Q3,
R6, C26, F1,
R21, R4, C1
30
KX-TG1107UAJ / KX-TG1107U AM / KX-TGA110UAJ / KX-TGA110UAM
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(F)* Battery Monitor Check &
Adjustment (Important)
-
1.
Apply 2.3V ± 0.005V between TP3(+) and TP4(-) 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 98 and A8.
98 < XX < A8 (Hex)
(If XX is out of range, change BBIC)
IC4, D2, L4,
L5, Q2, Q3,
R6, C26, F1,
R21, R4, C1
(G)
Battery Low
Confirmation (Important)
-
1.
Apply 2.40V between TP3(+) and TP4(-).
2.
Confirm that there is no Speaker sound (Battery low alarm).
3.
Apply 2.20V between TP3(+) and TP4(-).
4.
Confirm that there is Speaker sound (Battery low alarm).
IC4, F1, R21,
R4, C1, R103,
R110, D102,
Q104,
BUZZER
(H)*
BBIC Clock
Confirmation and
Adjustment (Important)
TP19
1.
Apply 2.6V between TP 3(+) and TP 4(-) with DC power.
2.
Execute the command “deactmac”.
3.
Execute the command “conttx”.
4.
Check X´tal Frequency. (*4)
(10.368 MHz ± 100Hz)
5.
Input Command “rdeeprom 00 01 01", then you can confirm the current value.
6.
Adjust the frequency of TP19 executing the command “setfreq 00 xx (where xx
is the value)” so that the reading of the frequency counter is 10.368000MHz
± 10Hz.
is the value)” so that the reading of the frequency counter is 10.368000MHz
± 10Hz.
IC4, L3, C57,
IC3, X1, C16,
C204
(I)*
Transmitted Power
Confirmation
TP15
Remove the Antenna before starting steps from 1 to 5.
1.
1.
Configure the DECT tester (CMD60) as follows;
<Setting>
•
Test mode: PP
•
RFPI: 0102030405
•
Traffic Channel: 5
•
Traffic Slot: 4
•
Mode: Loopback
2.
Execute the command “testmode”.
3.
Execute the command “regcmd60”.
4.
Initiate connection from DECT tester.
5.
Confirm that the NTP value at A201 (TP15) is 20dBm ~ 25dBm.
IC4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
(J)*
Modulation Check and
Adjustment
TP15
Follow steps 1 to 4 of (I) above.
5. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/div using data
type Fig31.
type Fig31.
6. Adjust the B-Field Modulation if required. (Execute the command “Readmod”
and “Writemod xx”, where xx is the value.)
and “Writemod xx”, where xx is the value.)
IC4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
(K)*
Frequency Offset
Confirmation
-
Follow steps 1 to 4 of (I) above.
5. Confirm that the frequency offset is -50kHz ~ +50kHz.
IC4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
(L)*
Sensitivity Receiver
Confirmation
-
Follow steps 1 to 4 of (I) above.
5. Set DECT tester power to -88dBm.
6. Confirm that the BER is < 1000ppm.
IC4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
(M)*
Timing Confirmation
-
Follow steps 1 to 4 of (I) above.
5. Confirm that the Timing accuracy is < ± 2.0ppm.
IC4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
(N)*
RSSI Level
Confirmation
-
Follow steps 1 to 4 of (I) above.
5. Set DECT tester power to -88dBm.
6. Execute the command “readrssi”.
7. Confirm: 25 < returned value < 43 (hex) (34 ± F (hex))
IC4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
31
KX-TG1107UAJ / KX-TG1107U AM / KX-TGA110UAJ / KX-TGA110UAM
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(O)*
Receive Audio Check
and Confirmation
TP15
1.
Configure the DECT tester (CMD60) as follows;
<Setting>
•
Test mode: PP
•
Mode: Normal
•
RFPI: 0102030405
2.
Execute the command “testmode”.
3.
Execute the command “regcmd60”.
4.
Initiate connection from DECT tester.
5.
Execute the command “openaudio”.
6.
Confirm that the value of EEPROM address “F3F” is “02”. (If the value is not
“02 (by User)”, set “02” and power off and power on, and return to clause 2.)
“02 (by User)”, set “02” and power off and power on, and return to clause 2.)
7.
Input audio signal (50mVrms/1kHz tone) from DECT tester.
<DECT tester setting>
•
Scramble: On
•
AF Gen. to ADPCM: On
•
AF Meter Input: AF Voltm
•
AF Gen. Frequency: 1000Hz
•
AF Gen. Level: 50mVrms
8.
Confirm hearing tone: 70mVrms ± 30mVrms (Just check Audio path)
9.
Confirm that the audio distortion with DECT tester is < 5%.
IC4, C67, C68,
D7, D6, IC3,
C54, L3, C57,
R112, R18,
C61, C58
(P)*
Transmit Audio Check
and Confirmation
TP15
1.
Configure the DECT tester (CMD60) as follows;
<Setting>
•
Test mode: FP
•
Mode: Normal
•
RFPI: 0102030405
2.
Execute the command “testmode”.
3.
Execute the command “regcmd60”.
4.
Initiate connection from DECT tester.
5.
Execute the command “openaudio”.
6.
Confirm that the value of EEPROM address “F3F” is “02”. (If the value is not
“02 (by User)”, set “02” and power off and power on, and return to clause 2.)
“02 (by User)”, set “02” and power off and power on, and return to clause 2.)
7.
Input audio signal (30mVrms/1kHz tone) to DECT tester.
<DECT tester setting>
•
Scramble: On
•
AF Gen. to ADPCM: Off
•
AF Meter Input: ADPCM
•
AF Gen. Frequency: 1000Hz
•
AF Gen. Level: 30mVrms
8.
Confirm hearing tone: 530mVrms ± 100mVrms (Just check Audio path)
9.
Confirm that the audio distortion with DECT tester is < 5%.
IC4, C8, R7,
R8, C6, C7,
C5, R5, R1,
C5, R5, R1,
C4, IC3, C54,
L3, C57,
R112, R18,
C61, C58
(Q)
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 -7.5 ± 2dBm and that the distortion level is < 5% at
TEL Line (600
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 -23 ± 2dBm and that the distortion level is < 5% at
Receiver. (vol = Low, 150
Receiver. (vol = Low, 150
Ω
Load)
32
KX-TG1107UAJ / KX-TG1107U AM / KX-TGA110UAJ / KX-TGA110UAM
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