Panasonic KX-TG8421EB Service Manual page 69

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).
BBIC (FLASH type)
(IC1)
EEPROM (IC3)
X'tal (X1)
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).
(*4) Refer to Check Point (Handset) (P.52)
Items
Programs for Voice processing, interface for RF
and EEPROM
Adjustment parameter data
(country version batch file, default batch file,
etc.)
System clock
KX-TG8421E/KX-TG8422E/KX-TG8423E/KX-TG8424E/KX-TGA840E
Necessary Adjustment
1. Make sure to connect the JIG cable, then detach the DC
Power.
2. Execute the command "flw480 *********.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
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
"TGA840DEFrevYY.bat". (*3).
11. Country version batch file: Execute the command
"TGA840XXrevYY.bat". (*3).
12. Clock adjustment: Refer to Check Point (H). (*4).
13. 1.8 V setting and battery low detection: Refer to Check
Point (A), (F) and (G). (*4).
1. Default batch file: Execute the command "default.bat".
2. Default batch file (remaining): Execute the Command
"TGA840DEFrevYY.bat". (*3)
3. Country version batch file: Execute the command
"TGA840XXrevYY.bat". (*3)
4. Clock adjustment: Refer to Check Point (J). (*4)
5. 1.8 V setting and battery low detection: Refer to Check
Point (A), (F) and (G). (*4)
1. Refer to Check Point (H). (*4)
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