Panasonic KX-TGC310RU / KX-TGC312RU / KX-TGC320RU / KX-TGC322RU / KX-TGC310UC / KX-TGC312UC / KX-TGC320UC / KX-TGCA30RU Service Manual ▷ View online
37
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
9.1.9.
Check Handset Transmission
Cross Reference:
Signal Route (P.17)
9.1.10. Check Handset Reception
Cross Reference:
Signal Route (P.17)
Note:
When checking the RF part, Refer to Check the RF part
(P.32).
(P.32).
9.1.11. Check Caller ID
Cross Reference:
Telephone Line Interface (P.13)
Note:
• Make sure the format of the Caller ID service of the
Telephone company that the customer subscribes to.
• It is also recommended to confirm that the customer is really
a subscriber of the service.
Check MIC of handset.
Check handset Tx in Signal Route.
Check speaker of handset.
Check handset Rx in Signal Route.
YES
Did bell ring?
(Message indicator
blinks)
(Message indicator
blinks)
Check Calling Line Identification (Caller ID)/
Call Waiting Caller ID.
Call Waiting Caller ID.
Check bell signal detection in
Telephone Line Interface.
Telephone Line Interface.
BASE UNIT
NO
38
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
9.1.12. Bell Reception
9.1.12.1. Base Unit
9.1.12.2. Handset
Cross Reference:
Telephone Line Interface (P.13)
Check Link (P.30)
How to Check the Handset Speaker or Receiver (P.57)
Check Link (P.30)
How to Check the Handset Speaker or Receiver (P.57)
9.1.13. Check TAM Operation (for KX-TGC320 only)
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.54)
Replacing IC or X'tal (P.54)
When bell signal is coming, is there bell sound
signal at BBIC (IC501 5pin : BELL)?
signal at BBIC (IC501 5pin : BELL)?
YES
Check around C103, C104, C105, C106, C107,
C109, C110, C111, C113, R101, R102, R103, R104,
R109, R110, R111, R112, P101
C109, C110, C111, C113, R101, R102, R103, R104,
R109, R110, R111, R112, P101
NO
Check IC501 of Base Unit.
Does the bell sound from SPEAKER?
Check around SP+, SP- .
When bell signal coming, is there bell sound signal
at BBIC (IC1: 35, 37)?
at BBIC (IC1: 35, 37)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at SP+, SP- ?
at SP+, SP- ?
YES
Check BBIC (IC1), C78, C79, R77, R76.
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.
Check Power Supply Circuit.
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
39
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
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) (P.39)
level in detail.
(*2) Refer to Check Point (Base Unit) (P.39)
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 (P.48) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.50).
*: The Setting Method of JIG (P.48) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.50).
Symptom
Remedy (*2)
You don’t have DECT Tester.
You have DECT Tester.
(Model Number: CMD60)
You cannot dial.
Check item (A) - (I).
Check item (A) - (I), (J) - (N).
You cannot hear the caller’s voice.
Check item (A) - (G), (O).
Check item (A) - (G), (J) - (N), (O).
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 (J) - (N).
The acoustic transmit level is high or low.
Check item (O).
Check item (O).
The acoustic reception level is high or low.
Check item (O).
Check item (O).
Base unit and handset do not link to each other.
Check item (A) - (I).
Check item (A) - (N).
The unit cannot charge.
Check item (P).
Check item (P).
TAM does not work. (for KX-TGC320 only)
Check item (Q).
Check item (Q).
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.
IC302, C341,
R321, R322
(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“.
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.
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/
2. Confirm the returned Value. (Value for reference is written at "EEPROM C/
SUM” in Software_Version_Table.xls).
IC501, IC611,
C611, RA611
(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
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
executing 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.
the 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
normal 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.
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
(G) DTMF Generator Check
(for RU)
-
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, L101,
C184, D141
DTMF Generator Check
(for UC)
-
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 -7.0 dBm ± 2.0 dB.
5. Confirm that the low Group is -9.0 dBm ± 2.0 dB.
3. Confirm DTMF character.
4. Confirm that the high Group is -7.0 dBm ± 2.0 dB.
5. Confirm that the low Group is -9.0 dBm ± 2.0 dB.
IC501, L101,
C184, D141
checksum value
B7DB
program number
DEM1EN
ex.)
9CF3
DE91EN
KX-TG310RU/UC
KX-TG320RU/UC
model no.
40
KX-TGC310/KX-TGC312/KX-TGC320/KX-TGC322/KX-TGCA30
(H)*
Transmitted Power
Confirmation
ANT1
Short ANT1 pattern to GND.
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 18.5 dBm ~ 25.0 dBm.
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 18.5 dBm ~ 25.0 dBm.
IC501, C810
C811, C819
C820, C863
C871, C872
C873, C874
C871, C872
C873, C874
C895, L803
(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.
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.
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
(for RU)
-
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 -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
minimum).
minimum).
6. Confirm that the level is -22.5 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,
R144, R145,
D141, L101,
C184, R164,
R177, C193,
R171, R172,
R175, R176,
R177, C193,
R171, R172,
R175, R176,
R178
Audio Check
(for UC)
-
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 -3 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
minimum).
minimum).
6. Confirm that the level is -21.5 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,
R144, R145,
D141, L101,
C184, R164,
R177, C193,
R171, R172,
R175, R176,
R177, C193,
R171, R172,
R175, R176,
R178
(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, C351
(O)
TAM Operation
Confirmation
(KX-TGC320 only)
-
1. TAM Confirmation (Execute the command "sendchar VPI").
2. Confirm the returned Value (Value is "DE97RN 00").
2. Confirm the returned Value (Value is "DE97RN 00").
IC501, IC601,
C601
Items
Check
Point
Procedure
Check or
Replace Parts
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