Panasonic KX-TG2511RUM / KX-TG2511RUN / KX-TG2511RUS / KX-TG2511RUT / KX-TG2512RUN / KX-TG2512RUS / KX-TG2521RUT / KX-TGA250RUM / KX-TGA250RUN / KX-TGA250RUS / KX-TGA250RUT Service Manual / Supplement ▷ View online
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KX-TG2511RUM/KX-TG2511RUN//KX-TG2511RUS/KX-TG2511RUT/KX-TG2512RUN/KX-TG2512RUS/KX-TG2521RUT/KX-TGA250RUM/KX-TGA250RUN/KX-TGA250RUS/KX-TGA250RUT
10.1.5.
Check Handset Transmission
Cross Reference:
Signal Route (P.17)
10.1.6.
Check Handset Reception
Cross Reference:
How to Check the Handset Speaker or Receiver (P.59).
Signal Route (P.17)
10.1.7.
Check Caller ID
Cross Reference:
Signal Route (P.17)
OK
Check MIC of Handset.
Check CDL TX (HANDSET) in Signal Route.
Check Handset Speaker in How to check the Handset
Speaker or Receiver.
Speaker or Receiver.
OK
Check CDL RX (HANDSET) in Signal Route.
Check Caller ID in Signal Route.
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KX-TG2511RUM/KX-TG2511RUN//KX-TG2511RUS/KX-TG2511RUT/KX-TG2512RUN/KX-TG2512RUS/KX-TG2521RUT/KX-TGA250RUM/KX-TGA250RUN/KX-TGA250RUS/KX-TGA250RUT
10.1.8.
Bell Reception
10.1.8.1. Base Unit
[Changed from original section “9.1.8.1. Base Unit”]
10.1.8.2. Handset
Cross Reference:
Telephone Line Interface
Check Link
Check Link
How to Check the Handset Speaker or Receiver
10.1.9.
Check TAM Operation (for KX-TG2521 only)
[Changed from original section “9.1.9. Base Unit”]
Cross Reference:
Power Supply Circuit (P.12)
Note:
(*1) When replacing FLASH MEMORY (IC601), TAM data need to be written to it. Refer to Base Unit of Things to Do after
Replacing IC or X'tal (P.56)
Replacing IC or X'tal (P.56)
NO
When bell signal is coming, is there bell sound
signal at BBIC (IC501: 5)?
signal at BBIC (IC501: 5)?
Check around C110, C111, C112, C113, C114,
R111, R112, R113, R114, D113, Q111, P101.
R111, R112, R113, R114, D113, Q111, P101.
Does the bell sound from SPEAKER?
Check around SP+, SP- .
When bell signal coming, is there bell sound signal
at BBIC (IC5: 35, 37)?
at BBIC (IC5: 35, 37)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at SP+, SP- ?
at SP+, SP- ?
YES
Check BBIC (IC5), D13, D14.
NO
Check cable of SPEAKER and resistance value
of SPEAKER.
of SPEAKER.
Check IC601 and BBIC (IC501) of Base Unit. (*1)
Is there a TAM icon on the Handset display?
Turn on the Answering System.
NO
NO
YES
Is the voltage of VBAT of Base Unit about 3.0 V
and +3.0V about 3.0 V?
and +3.0V about 3.0 V?
YES
Check Power Supply Circuit.
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KX-TG2511RUM/KX-TG2511RUN//KX-TG2511RUS/KX-TG2511RUT/KX-TG2512RUN/KX-TG2512RUS/KX-TG2521RUT/KX-TGA250RUM/KX-TGA250RUN/KX-TGA250RUS/KX-TGA250RUT
10.2. Troubleshooting by Symptom (Base Unit and Charger Unit)
[Changed from original section “9.2. Troubleshooting by Symptom (Base Unit and Charger Unit)”]
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 (Base Unit)
level in detail.
(*2) Refer to Check Point (Base Unit)
10.2.1.
Check Point (Base Unit)
[Changed from original section “9.2.1. Check Point (Base Unit)”]
Please follow the items below when BBIC or EEPROM or FLASH is replaced.
Note:
After the measuring, suck up the solder of TP.
*: The Setting Method of JIG (Base Unit)
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit)
*: The Setting Method of JIG (Base Unit)
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit)
Symptom
Remedy (*2)
You don’t have DECT Tester.
You have DECT Tester.
(Model Number: CMD60)
You cannot dial.
Check item (A) - (G).
Check item (A) - (G), (H) - (L).
You cannot hear the caller’s voice.
Check item (A) - (E), (M).
Check item (A) - (E), (H) - (L), (M).
You cannot use the handset a little away from base unit even if the
handset is within range of the base unit.
handset is within range of the base unit.
-
Check item (H) - (L).
The acoustic transmit level is high or low.
Check item (M).
Check item (M).
The acoustic reception level is high or low.
Check item (M).
Check item (M).
Base unit and handset do not link to each other.
Check item (A) - (G).
Check item (A) - (L).
The unit cannot charge.
Check item (N).
Check item (N).
TAM does not work. (for KX-TG2521 only)
Check item (O).
Check item (O).
Items
Check
Point
Procedure
Check or
Replace Parts
(A)
3.0 V Supply
Confirmation
Confirmation
VBAT
1.Confirm that the voltage between test point VBAT and GND is 3.0 V ± 0.2 V.
IC301,C304,
R301,R302,
R303,D301,
Q302,C307,
R303,D301,
Q302,C307,
Q301,L307,
C341,C310,
R306,C303
(B)
3.0 V Supply
Confirmation
Confirmation
+3.0V
1.Confirm that the voltage between test point +3.0V and GND is 3.0 V ± 0.02
V.
2.Adjust the 3.0 V voltage of +3.0V executing command “VDA“.
IC501, C503
(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.
IC501, X501
(D)* EEPROM Confirmation
-
1.EEP-ROM Confirmation (Execute the command "sendchar EPV").
2.Confirm the returned Value. (Value for reference is written at "EEPROM C/
SUM” in Software_Version_Table.xls).
IC501, IC611,
C611, RA505
(E)* BBIC Clock Adjustment
CKM
1. Input Command “ sendchar sfr”, then you can confirm the current value.
2. Check X’tal Frequency. (13.824 MHz ± 100 Hz).
3. If the frequency is not 13.824 MHz ± 100Hz, adjust the frequency of CKM exe-
2. Check X’tal Frequency. (13.824 MHz ± 100 Hz).
3. If the frequency is not 13.824 MHz ± 100Hz, adjust the frequency of CKM exe-
cuting the command “sendchar sfr xx xx (where xx is the value)” so that the
reading of the frequency counter is 13.824000 MHz ± 7 Hz.
reading of the frequency counter is 13.824000 MHz ± 7 Hz.
IC501, X501,
C508, C509
(F)* Hookswitch Check with
DC Characteristics
-
1.Connect Telephone Socket to Tel-simulator which is connected with 600
.
2.Set line voltage to 48 V and line current to 40mA at off-hook condition of nor-
mal telephone.
3.Execute the command “hookoff”
4.Confirm that the line current is 40 mA ± 5 mA.
5.Execute the command “hookon”.
6.Confirm that the line current is less than + 0.8 mA.
P101, D101,
Q141, Q161,
Q142, D141,
Q142, D141,
R141~R145,
R159~R169
7E36
DCW1EN
ex.)
checksum value
program number
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KX-TG2511RUM/KX-TG2511RUN//KX-TG2511RUS/KX-TG2511RUT/KX-TG2512RUN/KX-TG2512RUS/KX-TG2521RUT/KX-TGA250RUM/KX-TGA250RUN/KX-TGA250RUS/KX-TGA250RUT
10.2.2.
Check Point (Charger Unit)
[Changed from original section “9.2.2. Check Point (Charger Unit)”]
Note:
After the measuring, suck up the solder of TP.
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit)
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit)
(G) DTMF Generator Check
-
1. Connect Telephone Socket to DTMF tester. (Load=600
)
2. Link Handset and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -3.0 dBm ± 2.0 dB.
5. Confirm that the low Group is -6.0 dBm ± 2.0 dB.
3. Confirm DTMF character.
4. Confirm that the high Group is -3.0 dBm ± 2.0 dB.
5. Confirm that the low Group is -6.0 dBm ± 2.0 dB.
IC501, C184,
D141
(H)*
Transmitted Power
Confirmation
ANT1
Remove the Antenna before starting Step 1 to 7.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: FP
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• RF LEVEL = -70 dBm.
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• RF LEVEL = -70 dBm.
2. Execute the command ”sendchar TST”.
3. Execute the command “sendchar dmv 2 2”.
4. Check that “Signalling Status” has been set to “Locked”, then press “ACCEPT
3. Execute the command “sendchar dmv 2 2”.
4. Check that “Signalling Status” has been set to “Locked”, then press “ACCEPT
RFPI”.
5. Initiate connection from Dect tester (“set up connect”)
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 19 ~ 24 dBm.
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 19 ~ 24 dBm.
IC501, C819,
C895, C896,
C897, L503,
L504,C898,
C899
(I)*
Modulation Check
ANT1
Follow steps 1 to 6 of (H).
7.Confirm that the B-Field Modulation is -350 ± 50/+350 ± 50 kHz/div using data
type Fig31.
Refer to (H)
(J)* Frequency Offset Check
ANT1
Follow steps 1 to 6 of (H).
7.Confirm that the frequency offset is < ±20 kHz.
Refer to (H)
(K)*
Sensitivity Receiver
Confirmation
ANT1
Follow steps 1 to 6 of (H).
7.Set DECT tester power to -88 dBm.
8.Confirm that the BER is < 1000 ppm.
Refer to (H)
(L)*
Power RAMP
Confirmation
-
Follow steps 1 to 6 of (H).
7.Confirm that Power RAMP is matching.
Refer to (H)
(M)
Audio Check
-
1. Link with Handset which is connected to Line Simulator.
2. Set line voltage to 48 V and line current to 50 mA.
3. Input -45 dBm (600
2. Set line voltage to 48 V and line current to 50 mA.
3. Input -45 dBm (600
)/1 kHz to MIC of Handset. Measure the Level at Line I/F
and distortion level.
4. Confirm that the level is -1.5 dBm ± 5 dB and that the distortion level is < 5 %
at TEL Line (600
Load).
5. Input -20 dBm (600
)/1 kHz to Line I/F. Measure the Level at Receiver of
Handset and distortion level (Receive volume set to second position from min-
imum).
imum).
6. Confirm that the level is -26.0 dBm ± 4 dB and that the distortion level is < 5 %
at Receiver (34
Load).
IC501, SA101,
P101, D101,
Q141, Q142,
Q161, Q171,
Q161, Q171,
R141, R142,
R144, R145,
D141, C184,
R164, R177,
C193, R191,
R172, R195,
R144, R145,
D141, C184,
R164, R177,
C193, R191,
R172, R195,
R196
(N)
Charging Check
-
1.Connect Charge Contact 12
/2 W resistor between charge+ and charge-.
2.Measure and confirm voltage across the resistor is 3.9 V ± 0.4 V.
R371, R372,
D362, C361
(O)
TAM Operation
Confirmation
(KX-TG2521 only)
-
1.TAM Confirmation (Execute the command "sendchar VPI").
2.Confirm the returned Value (Value is "DBY7RN 00").
IC501, IC601,
C601
Items
Check
Point
Procedure
Check or
Replace Parts
(A)
Charging Check
-
1. Connect Charge Contact 12
/2 W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 3.1 V ± 0.4 V.
R1, F1
Items
Check
Point
Procedure
Check or
Replace Parts
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