Panasonic KX-TG8421RUB / KX-TG8421RUN / KX-TG8421RUT / KX-TG8421RUW / KX-TG8422RUB / KX-TG8422RUN / KX-TGA840RUB / KX-TGA840RUN / KX-TGA840RUT / KX-TGA840RUW Service Manual ▷ View online
45
KX-TG8421RU/KX-TG8422RU/KX-TGA840RU
9.1.4.2.
RF Check Flowchart
Each item (1 ~ 3) of RF Check Flowchart corresponds to Check Table for RF part (P.46).
Please refer to the each item.
Please refer to the each item.
Note:
(*1) Base unit - refer to (G) of Check Point (Base Unit) (P.49)
Handset - refer to (H) of Check Point (Handset) (P.53)
Handset - refer to (H) of Check Point (Handset) (P.53)
46
KX-TG8421RU/KX-TG8422RU/KX-TGA840RU
9.1.4.3.
Check Table for RF part
Note:
(*1) Refer to Adjustment Standard (Base Unit) (P.64)
(*2) Refer to Adjustment Standard (Handset) (P.68)
(*2) Refer to Adjustment Standard (Handset) (P.68)
No.
Item
BU (Base Unit) Check
HS (Handset) Check
1
Link Confirmation Normal
HS, BU Mode: [Normal mode]
1. Register Regular HS to BU (to be
checked).
2. Press [Talk] key of the Regular HS to
establish link.
1. Register HS (to be checked) to Regular
BU.
2. Press [Talk] key of the HS to establish link.
2
X’tal Frequency confirmation
1. Check X’tal Frequency. (*1)
(10.368 MHz ± 100 Hz)
1. Check X’tal Frequency. (*2)
(10.368 MHz ±100Hz)
3
Range Confirmation Normal
HS, BU Mode: [Normal mode]
1. Register Regular HS to BU (to be
checked).
2. Press [Talk] key of the Regular HS to
establish link.
3. Compare the range of the BU (being
checked) with that of the Regular BU.
1. Register HS (to be checked) to Regular
BU.
2. Press [Talk] key of the HS to establish link.
3. Compare the range of the HS (being
3. Compare the range of the HS (being
checked) with that of the Regular HS.
47
KX-TG8421RU/KX-TG8422RU/KX-TGA840RU
9.1.5.
Check Handset Transmission
Cross Reference:
Signal Route (P.14)
9.1.6.
Check Handset Reception
Cross Reference:
How to Check the Handset Speaker or Receiver (P.72).
Signal Route (P.14)
Signal Route (P.14)
9.1.7.
Check Caller ID
Cross Reference:
Signal Route (P.14)
48
KX-TG8421RU/KX-TG8422RU/KX-TGA840RU
9.1.8.
Bell Reception
9.1.8.1.
Base Unit
9.1.8.2.
Handset
Cross Reference:
Telephone Line Interface (P.10)
Check Link (P.40)
How to Check the Handset Speaker or Receiver (P.72)
Check Link (P.40)
How to Check the Handset Speaker or Receiver (P.72)
9.1.9.
Check TAM Operation
Cross Reference:
Power Supply Circuit (P.9)
Note:
(*1) When replacing FLASH MEMORY (IC421), TAM data need to be written to it. Refer to Base Unit of Things to Do after
Replacing IC or X'tal (P.69)
Replacing IC or X'tal (P.69)
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