Panasonic KX-TG6541RUB / KX-TGA651RUB / KX-TGA405RUB Service Manual ▷ View online
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KX-TG6541RUB/KX-TGA651RUB/KX-TGA405RUB
11.8.1.3. Range Extender
First, operate the PC setting according to The Setting Method of JIG (Base Unit) (P.54).
Then download the appropriate data according to the following procedures.
Then download the appropriate data according to the following procedures.
Note:
(*3) XXX: country code, YYY: revision number.
“XXX” and “YYY” vary depending on the country version. You can find them in the batch file, PNZZ- mentioned in The Setting
Method of JIG (Base Unit) (P.54).
“XXX” and “YYY” vary depending on the country version. You can find them in the batch file, PNZZ- mentioned in The Setting
Method of JIG (Base Unit) (P.54).
Items
How to download/Required adjustment
EEPROM (IC611)
Adjusted parameter data is stored in memory.
(country version batch file, default batch file,
etc.)
(country version batch file, default batch file,
etc.)
1) Change the address “0000” of EEPROM to “22” to download
the data.
2) Default batch file: Execute the command
“TGA405EURUrevYYY.bat. (*3)”.
3) Clock adjustment
the data.
2) Default batch file: Execute the command
“TGA405EURUrevYYY.bat. (*3)”.
3) Clock adjustment
X'tal (X501)
System clock
Clock adjustment data is in EEPROM, adjust the data again
after replacing it.
1) Apply 6.5V between DCP ad DCM with DC power.
2) Input Command "sendchar sfr", then you can confirm the cur-
rent value.
3) Check X'tal Frequency.(13.824 MHz ± 100 Hz).
4) If the frequency is not 13.824 MHz ± 100 Hz, adjust the fre-
quency of CLK executing the command "sendchar sfr xx xx
(where xx is the value)" so that the reading of the frequency
counter is 13.824000 MHz ± 15 Hz.
after replacing it.
1) Apply 6.5V between DCP ad DCM with DC power.
2) Input Command "sendchar sfr", then you can confirm the cur-
rent value.
3) Check X'tal Frequency.(13.824 MHz ± 100 Hz).
4) If the frequency is not 13.824 MHz ± 100 Hz, adjust the fre-
quency of CLK executing the command "sendchar sfr xx xx
(where xx is the value)" so that the reading of the frequency
counter is 13.824000 MHz ± 15 Hz.
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KX-TG6541RUB/KX-TGA651RUB/KX-TGA405RUB
11.9. RF Specification
11.9.1. Base Unit
*: Refer to Check Point (Base Unit) (P.40)
11.9.2. Handset
**: Refer to Check Point (Handset) (P.44)
Item
Value
Refer to -. *
TX Power
19 dBm ~ 25 dBm
Check Point (Base Unit) (J)
Modulation
-370±30/+370±30 kHz/div & Modulated
width 690 kHz
width 690 kHz
Check Point (Base Unit) (K)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Base Unit) (L)
Frequency Drift
< ± 35 kHz / ms
Check Point (Base Unit) (M)
RX Sensitivity
< 1000 ppm
Check Point (Base Unit) (N)
Timing Accuracy
< ± 5.0 ppm/<±15.0ppm
Check Point (Base Unit) (O)
Power RAMP
Power RAMP is matching
Check Point (Base Unit) (P)
Item
Value
Refer to -. **
TX Power
19 dBm ~ 25 dBm
Check Point (Handset) (I)
Modulation
-370±30/+370±30 kHz/div & Modulated
width 690 kHz
width 690 kHz
Check Point (Handset) (J)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Handset) (K)
Frequency Drift
< ± 35 kHz / ms
Check Point (Handset) (L)
RX Sensitivity
< 1000 ppm
Check Point (Handset) (M)
Power RAMP
Power RAMP is matching
Check Point (Handset) (N)
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KX-TG6541RUB/KX-TGA651RUB/KX-TGA405RUB
11.10. How to Check the Handset Speaker or Receiver
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
2. Put the probes at the speaker terminals as shown below.
11.11. Frequency Table (MHz)
Note:
Channel No. 10: In the Test Mode on Base Unit and Handset.
BASE UNIT
HANDSET
Channel No
Transmit Frequency
Receive Frequency
Transmit Frequency
Receive Frequency
1
1897.344 1897.344 1897.344 1897.344
2
1895.616 1895.616 1895.616 1895.616
3
1893.888 1893.888 1893.888 1893.888
4
1892.160 1892.160 1892.160 1892.160
5
1890.432 1890.432 1890.432 1890.432
6
1888.704 1888.704 1888.704 1888.704
7
1886.976 1886.976 1886.976 1886.976
8
1885.248
1885.248
1885.248
1885.248
9
1883.520 1883.520 1883.520 1883.520
10
1881.792 1881.792 1881.792 1881.792
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KX-TG6541RUB/KX-TGA651RUB/KX-TGA405RUB
12 Miscellaneous
12.1. How to Replace the Flat Package IC
Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a
soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
12.1.1. Preparation
• PbF (: Pb free) Solder
• Soldering Iron
• Soldering Iron
Tip Temperature of 700
°F ± 20 °F (370 °C ± 10 °C)
Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with
less experience could overheat and damage the PCB foil.
less experience could overheat and damage the PCB foil.
• Flux
Recommended Flux: Specific Gravity
→ 0.82.
Type
→ RMA (lower residue, non-cleaning type)
Note: See About Lead Free Solder (Pbf: Pb free) (P.4)
12.1.2. How to Remove the IC
1. Put plenty of solder on the IC pins so that the pins can be completely covered.
Note:
If the IC pins are not soldered enough, you may give pressure to the P.C. board when cutting the pins with a cutter.
2. Make a few cuts into the joint (between the IC and its pins) first and then cut off the pins thoroughly.
3. While the solder melts, remove it together with the IC pins.
When you attach a new IC to the board, remove all solder left on the board with some tools like a soldering wire. If some solder is
left at the joint on the board, the new IC will not be attached properly.
left at the joint on the board, the new IC will not be attached properly.
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