Panasonic KX-TG8225RUB / KX-TG8225RUJ / KX-TG8225RUM / KX-TG8225RUR / KX-TG8225RUW / KX-TG8226RUB / KX-TG8226RUJ / KX-TG8226RUM / KX-TGA820RUB / KX-TGA820RUJ / KX-TGA820RUM / KX-TGA820RUR / KX-TGA820RUW Service Manual ▷ View online
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KX-TG8225RU/KX-TG8226RU/KX-TGA820RU
11.6.2. Handset
Before making the following adjustment, ensure you have carried out PC Setting (P.65) in The Setting Method of JIG (Hand-
set).
set).
Note:
(*3) XX: country code, YY: revision number
“XX” and “YY” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.61).
“XX” and “YY” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.61).
(*4) Refer to Check Point (Handset) (P.49)
Items
Necessary Adjustment
BBIC (FLASH type)
(IC1)
(IC1)
Programs for Voice processing, interface for RF
and EEPROM
and EEPROM
1. Make sure to connect the JIG cable, then detach the DC
Power.
2. Execute the command “flw430 ************.hex”.
3. Connect the DC Power.
4. Press and hold the handset Power key.
5. While holding down the handset Power key, press the PC
3. Connect the DC Power.
4. Press and hold the handset Power key.
5. While holding down the handset Power key, press the PC
Enter key once.
6. After a few minutes, “Successful upgrade” is displayed
on the PC indicating downloading has finished.
7. Detach the JIG cable, then press the handset Power key
to turn it on.
8. Connect the JIG cable again, and execute the command
“getchk”, then confirm the checksum value is correct.
• If the downloading fails, start again from step 1.
9. Default batch file: Execute the command “default.bat”.
10. Default batch file (remaining): Execute the Command
“TGA820DEFrevYY.bat”. (*3)
11. Country version batch file: Execute the command
“TGA820XXrevYY”. (*3)
12. Clock adjustment: Refer to Check Point (J). (*4)
13. 1.8 V setting and battery low detection: Refer to Check
13. 1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
BBIC (QFP/COB type)
(IC1)
(IC1)
Programs for Voice processing, interface for RF
and EEPROM
and EEPROM
1. Default batch file: Execute the command “default.bat”.
2. Default batch file (remaining): Execute the Command
2. Default batch file (remaining): Execute the Command
“TGA820DEFrevYY.bat”. (*3)
3. Country version batch file: Execute the command
“TGA820XXrevYY”. (*3)
4. Clock adjustment: Refer to Check Point (J). (*4)
5. 1.8 V setting and battery low detection: Refer to Check
5. 1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
EEPROM (IC3)
Adjustment parameter data
(country version batch file, default batch file,
etc.)
(country version batch file, default batch file,
etc.)
1. Default batch file: Execute the command “default.bat”.
2. Default batch file (remaining): Execute the Command
2. Default batch file (remaining): Execute the Command
“TGA820DEFrevYY.bat”. (*3)
3. Country version batch file: Execute the command
“TGA820XXrevYY”. (*3)
4. Clock adjustment: Refer to Check Point (J). (*4)
5. 1.8 V setting and battery low detection: Refer to Check
5. 1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
X'tal (X1)
System clock
1. Refer to Check Point (J). (*4)
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KX-TG8225RU/KX-TG8226RU/KX-TGA820RU
11.7. RF Specification
11.7.1. Base Unit
*: Refer to Check Point (Base Unit) (P.46)
11.7.2. Handset
**: Refer to Check Point (Handset) (P.49)
Item
Value
Refer to -. *
TX Power
20.7 dBm ~ 25.7 dBm
Check Point (Base Unit) (I)
Modulation
-220 ~ -403/+220 ~ +403 kHz/div & Mod-
ulated width 670 kHz
ulated width 670 kHz
Check Point (Base Unit) (J)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Base Unit) (K)
Frequency Drift
< ± 30 kHz / ms
Check Point (Base Unit) (L)
RX Sensitivity
< 1000 ppm
Check Point (Base Unit) (M)
Timing Accuracy
< ± 5.0 ppm
Check Point (Base Unit) (N)
Power RAMP
Power RAMP is matching
Check Point (Base Unit) (O)
Item
Value
Refer to -. **
TX Power
20 dBm ~ 25 dBm
Check Point (Handset) (K)
Modulation
-220 ~ -403/+220 ~ +403 kHz/div & Mod-
ulated width 670 kHz
ulated width 670 kHz
Check Point (Handset) (L)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Handset) (M)
Frequency Drift
< ± 30 kHz / ms
Check Point (Handset) (N)
RX Sensitivity
< 1000 ppm
Check Point (Handset) (O)
Power RAMP
Power RAMP is matching
Check Point (Handset) (P)
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KX-TG8225RU/KX-TG8226RU/KX-TGA820RU
11.8. 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.
11.9. 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-TG8225RU/KX-TG8226RU/KX-TGA820RU
12 Schematic Diagram
12.1. For Schematic Diagram
12.1.1. Base Unit (Schematic Diagram (Base Unit))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagrams may be modified at any time with the development of new technology.
12.1.2. Handset (Schematic Diagram (Handset))
Notes:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagram may be modified at any time with the development of new technology.
2. The schematic diagram may be modified at any time with the development of new technology.
12.1.3. Charger Unit (Schematic Diagram (Charger Unit))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagram may be modified at any time with the development of new technology.
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