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Model
KX-TG6511RUB KX-TG6511RUT KX-TG6511RUM KX-TG6512RUB KX-TGA650RUB KX-TGA650RUT KX-TGA650RUM KX-TGA651RUB KX-TGA651RUT KX-TGA651RUM
Pages
82
Size
2.19 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS PHONE
File
kx-tg6511rub-kx-tg6511rut-kx-tg6511rum-kx-tg6512ru.pdf
Date

Panasonic KX-TG6511RUB / KX-TG6511RUT / KX-TG6511RUM / KX-TG6512RUB / KX-TGA650RUB / KX-TGA650RUT / KX-TGA650RUM / KX-TGA651RUB / KX-TGA651RUT / KX-TGA651RUM Service Manual ▷ View online

36
KX-TG6511RU/KX-TG6512RU/KX-TGA650RU/KX-TGA651RU
(H)* Hookswitch Check with 
DC Characteristics
-
1. Connect Telephone Socket to Tel-simulator which is connected with 600 
Ω.
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.
L1, L2, Q3, R14, 
R15, Q4, R16, 
R17, D3, 
R18~R24, 
C15~C17, D21, 
Q5, R27, IC7
(I) DTMF Generator Check
-
1. Connect Telephone Socket to DTMF tester. (Load=600 
Ω)
2. Link Handset and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -6.0 dBm ~ -10.0 dBm.
5. Confirm that the low Group is -8.5 dBm ~ -12.5 dBm.
IC7, R116, 
C141, R29, C22, 
C23, Q5, D21
(J)* Transmitted Power Con-
firmation
-
ANTI_TP
Remove the Antenna before starting step from 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.
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
RFPI”.
5. Initiate connection from Dect tester (“set up connect”)
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 19.0 dBm ~ 25.0 dBm.
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
(K)* Modulation Check and 
Adjustment
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the B-Field Modulation is -370 ± 30/ +370± 30 kHz/div & Modu-
lated width   690 kHz using data type Fig31.
8.Adjust the B-Field Modulation if required. (Execute the command “readmod”
and “wrtmod xx”, where xx is the value.)
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
(L)* Frequency Offset Check
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the frequency offset is < ± 50 kHz.
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
Items
Check 
Point
Procedure
Check or 
Replace Parts
37
KX-TG6511RU/KX-TG6512RU/KX-TGA650RU/KX-TGA651RU
(M)* Frequency Drift Confir-
mation
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the frequency drift is < ± 35 kHz/ms.
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
(N)*
Sensitivity Receiver 
Confirmation
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Set DECT tester power to -90 dBm.
8.Confirm that the BER is < 1000 ppm.
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
(O)*
Timing Confirmation
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the Timing accuracy is
• ± 5.0 ppm (When adjust the frequency of CLK in item (G)).
• ± 15 ppm (When do not adjust the frequency of CLK in item (A)).
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
(P)* Power RAMP Confirma-
tion
-
Follow steps 1 to 6 of (J).
7.Confirm that Power RAMP is matching.
IC7, 
C802~C806, 
C808~C814, 
C820, C819,  
C822, C823, 
C825, C827, 
C826, C834, 
C851, C853, 
C859~C861, 
DA801, DA802, 
IC801, 
L801~L803, 
C855~C858, 
R801~R807, 
R106, R109, 
Q9, C617 
Items
Check 
Point
Procedure
Check or 
Replace Parts
38
KX-TG6511RU/KX-TG6512RU/KX-TGA650RU/KX-TGA651RU
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) (P.50).
(Q)
Audio Check
-
1. Link with Handset.
2. Input -45dBm/1kHz to MIC of Handset.
Measure the Level at Line I/F and distortion level.
3. Confirm that the level is -10 dBm ± 2 dBm and that the distortion level is < 5%
at TEL Line (600 
Ω Load).
4. Input -20 dBm/1 kHz to Line I/F.
Measure the level at Receiver of Handset and distortion level
(*Receive volume set to second position from minimum). 
5. Confirm that the level is -22 dBm ± 2 dBm and that the distortion level is < 5%
at Receiver (Volume Middle, 150 
Ω Load).
IC7, SA1, L1, 
L2, D3, Q3, Q4, 
R14, R15, R16, 
R17, D21, Q5, 
R19, R20, C14, 
C56, R117, 
R116, C141, R9, 
C22, C23
(R)
Charging Check
-
1. Connect Charge Contact 12 
Ω/2 W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 3.10 V ± 0.3 V.
R55, R56, D22, 
D23, D24, C623, 
C624
(S)
2.4V Supply Confirma-
tion  VDD2 
VDD2
1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V.
IC7, Q9, C617
Items
Check 
Point
Procedure
Check or 
Replace Parts
(A)
Charging Check
-
1. Connect Charge Contact 12
Ω/2 W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 3.1 V ± 0.3 V.
R1, F1
Items
Check 
Point
Procedure
Check or 
Replace Parts
39
KX-TG6511RU/KX-TG6512RU/KX-TGA650RU/KX-TGA651RU
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.  
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.39)
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.
*: Connections (P.51) is required beforehand.
The connections of adjustment equipments are as shown in Adjustment Standard (Handset) (P.53).
Items
Check 
Point
Procedure
Check or 
Replace Parts
(A)* 1.8 V Supply Adjustment
VDD1
1. Confirm that the voltage between test point VDD1 and GND is 1.8 V ± 0.02 V.
2. Execute the command “VDD”, then check the current value.
3. Adjust the 1.8V voltage of VDD1 executing command “VDD XX“(XX is the
value).
IC1, Q2, C48, 
D1, C1, C44, 
R45, C40, 
C45, F1
(B)*
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.
IC1, X1, RA61, 
R64, R66
(C)* EEP-ROM 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).
IC1, IC3,  
RA40, C172
(D) Charge Control Check & 
Charge Current Monitor 
Check
-
1. Apply 3.5 V between CHG(+) and CHG(-) with DC power supply and set cur-
rent limit to 250 mA.
Confirm the indication of “charging” on LCD.
2. Confirm that the current limit LED of DC power supply is ON/OFF.
Confirm it after waiting over 1 minute at least.
3. Decrease current limit of DC power supply to 100 mA.
4. Confirm that the current limit LED of DC power supply is stable. (Current limiter
is ON.)
(If charge control cannot be confirmed by this procedure, please use battery to hand-
set power supply and try again.)
IC1, Q4 Q9, 
D7, R6, R7, 
F1, C1, R2, 
R30, R31, R8,  
R45
(E)* Charge Detection (OFF) 
Check
-
1. Stop supplying 3.5 V to CHG (+) and CHG (-).
2. Confirm the indication of “charging” has been cleared.
IC1, Q4 Q9, 
D7, R6, R7, 
F1, C1, R2, 
R30, R31, R8,  
R45
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