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KX-TG8011RUC KX-TG8011RUS KX-TG8011RUT KX-TG8012RUS KX-TG8012RUT KX-TGA800RUC KX-TGA800RUS KX-TGA800RUT
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Service Manual
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Panasonic KX-TG8011RUC / KX-TG8011RUS / KX-TG8011RUT / KX-TG8012RUS / KX-TG8012RUT / KX-TGA800RUC / KX-TGA800RUS / KX-TGA800RUT Service Manual ▷ View online

49
KX-TG8011RU/KX-TG8012RU/KX-TGA800RU
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.61).
(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 -10.0 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 -21.0 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
(R)
Charging Check
-
1. Connect Charge Contact 10 
Ω/2 W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 2.75 V ± 0.3 V.
R55, R56, R57, 
D22, D23, C623
Items
Check 
Point
Procedure
Check or 
Replace Parts
(A)
Charging Check
-
1. Connect Charge Contact 10 
Ω/2 W resistor between charge+ and charge-.
2. Measure and confirm voltage across the resistor is 2.75 V ± 0.3 V.
R1 
D1, F1
Items
Check 
Point
Procedure
Check or 
Replace Parts
50
KX-TG8011RU/KX-TG8012RU/KX-TGA800RU
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.50)
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.
*: PC Setting (P.58) is required beforehand.
The connections of adjustment equipments are as shown in Adjustment Standard (Handset) (P.64).
Items
Check 
Point
Procedure
Check or 
Replace Parts
(A)* 1.8 V Supply Adjustment
1.8V
1. Confirm that the voltage between test point 1.8Vand 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 1.8V executing command “VDD XX“(XX is the
value).
IC1, Q2, C48, 
D1, C1, C44, 
R45, C40, 
C45, F1, C2
(B)*
BBIC Confirmation
CP2.5V
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
CP2.5V
1. EEP-ROM Confirmation (Execute the command “ChkTGA800XXrevYY.bat”).
XX: country code
YY: revision number
2. Confirm the returned checksum value.
Note:
“XX”, “YY”, and “checksum” vary depending on the country version. You can find
them in the batch file, PQZZ- mentioned in JIG and PC (P.62).
IC1, IC3,  
R40~R42, 
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, D8, L4, L5, 
R6, R7, F1, 
C1, R2, R30, 
R8, C147, 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, D8, L4, L5, 
R6, R7, F1, 
C1, R2, R30, 
R8, C147, R45
51
KX-TG8011RU/KX-TG8012RU/KX-TGA800RU
(F)* Battery Monitor Check
-
1. Apply 2.25 V between BATT+ and BATT-.
2. Execute the command 
sendchar PAD
sendchar LED 0
sendchar AD1
It assumes that the return value is XX.
a)  6D   xx   72: No need to adjust
b) xx: 6B ~ 6C: Need to adjust
xx: 73 ~ 75: Need to adjust
Write AD value of 2.25 V to EEPROM.
ex) read data: xx=6B, write data :yy=6B
read data: XX = 73, write data: YY = 73
EEPROM = 0004(Low Voltage) write “YY”
Execute the command “wreeprom 00 04 01 YY”.
EEPROM = 0005(No Voltage) write ‘’YY-C’’
Execute the command “×wreeprom 00 05 01 ZZ”.
Note:
ZZ = YY - C
No Voltage writing data limit is ‘00’.
c)  xx:00 ~ 6A: reject
xx:76 ~ FF: reject
IC1, F1, C1, 
R45
(G)
Battery Low Confirma-
tion
-
1. Apply 2.40 V between BATT+ and BATT-.
2. Confirm that there is no flashing of Battery Icon.
3. Apply 2.25 V ± 0.08 V between BATT+ and BATT-.
4. Confirm that there is flashing of Battery Icon.
IC1, F1, C1, 
R45
(H)* BBIC Clock Adjustment
X_CLK
1. Apply 2.6 V between BATT+ and BATT- with DC power.
2. Input Command “sendchar sfr”, then you can confirm the current value.
3. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
4. If the frequency is not 10.368 MHz ± 100 Hz, adjust the frequency of CLK exe-
cuting the command “sendchar 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. 
IC1, X1, C47
 
(I)* Transmitted Power Con-
firmation
-
Remove the Antenna before starting step from 1 to 4.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: PP
• RFPI: 0102030405
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• RF LEVEL = -70 dBm
• PACKET: PP32Z
2. Execute the command “sendchar TST 01 02 03 04 05".
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is 19 dBm ~ 24 dBm.
IC1, 
R801~R806, 
C808~C814, 
C819, C825, 
C834, IC801, 
L802~L804, 
D801, R807, 
L801, C820, 
C822, C826, 
C827, C832, 
C833, C837, 
D802, DA1,
C117, C124,
C186, C187,
C802~C804,
R107, R108
(J)* Modulation Check and 
Adjustment
-
Follow steps 1 to 3 of (I).
4.Confirm that the B-Field Modulation is -300 ~ -402/ +300 ~ +402 kHz/div &
Modulated width   670kHz/div using data type Fig 31.
IC1, 
R801~R806, 
C808~C814, 
C819, C825, 
C834, IC801, 
L802~L804, 
D801, R807, 
L801, C820, 
C822, C826, 
C827, C832, 
C833, C837, 
D802, DA1,
C117, C124,
C186, C187,
C802~C804,
R107, R108
Items
Check 
Point
Procedure
Check or 
Replace Parts
52
KX-TG8011RU/KX-TG8012RU/KX-TGA800RU
(K)* Frequency Offset Confir-
mation
-
Follow steps 1 to 3 of (I).
4.Confirm that the frequency Offset is < ± 20 kHz.
IC1, 
R801~R806, 
C808~C814, 
C819, C825, 
C834, IC801, 
L802~L804, 
D801, R807, 
L801, C820, 
C822, C826, 
C827, C832, 
C833, C837, 
D802, DA1,
C117, C124,
C186, C187,
C802~C804,
R107, R108
(L)* Frequency Drift Confir-
mation
-
Follow steps 1 to 3 of (I).
4.Confirm that the frequency Drift is < ± 30KHz/msec.
IC1, 
R801~R806, 
C808~C814, 
C819, C825, 
C834, IC801, 
L802~L804, 
D801, R807, 
L801, C820, 
C822, C826, 
C827, C832, 
C833, C837, 
D802, DA1,
C117, C124,
C186, C187,
C802~C804,
R107, R108
(M)*
Sensitivity Receiver 
Confirmation
-
Follow steps 1 to 3 of (I).
4.Set DECT tester power to -88 dBm.
5.Confirm that the BER is < 1000 ppm.
IC1, 
R801~R806, 
C808~C814, 
C819, C825, 
C834, IC801, 
L802~L804, 
D801, R807, 
L801, C820, 
C822, C826, 
C827, C832, 
C833, C837, 
D802, DA1,
C117, C124,
C186, C187,
C802~C804,
R107, R108
(N)* Power RAMP Confirma-
tion
-
Follow steps 1 to 3 of (I).
4.Confirm that Power RAMP is matching.
IC1, 
R801~R806, 
C808~C814, 
C819, C825, 
C834, IC801, 
L802~L804, 
D801, R807, 
L801, C820, 
C822, C826, 
C827, C832, 
C833, C837, 
D802, DA1,
C117, C124,
C186, C187,
C802~C804,
R107, R108
Items
Check 
Point
Procedure
Check or 
Replace Parts
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