Panasonic KX-TG8421EB, Service Manual

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KX-TG8421E/KX-TG8422E/KX-TG8423E/KX-TG8424E/KX-TGA840E
( M )* Frequency Drift Confir-
mation
-
ANTI_TP
Follow steps 1 to 6 of (J) .
7.Confirm that the frequency drift is < ± 35 kHz/ms.
IC7,
C802~C806,
C808~C814,
C820, C819,
C822, C823,
C825, C827,
C826, C834,
C851, C853,
C859~C861,
DA801, DA802,
IC801,
L801~L803,
C855~C858,
R801~R807,
R106, R109,
Q9, C617
( N )* Sensitivity Receiver
Confirmation
-
ANTI_TP
Follow steps 1 to 6 of (J) .
7.Set DECT tester power to -90 dBm.
8.Confirm that the BER is < 1000 ppm.
IC7,
C802~C806,
C808~C814,
C820, C819,
C822, C823,
C825, C827,
C826, C834,
C851, C853,
C859~C861,
DA801, DA802,
IC801,
L801~L803,
C855~C858,
R801~R807,
R106, R109,
Q9, C617
( O )* Timing Confirmation -
ANTI_TP
Follow steps 1 to 6 of (J) .
7.Confirm that the Timing accuracy is
• ± 5.0 ppm (When adjust the frequency of CLK in item (G) ).
• ± 15 ppm (When do not adjust the frequency of CLK in item (A) ).
IC7,
C802~C806,
C808~C814,
C820, C819,
C822, C823,
C825, C827,
C826, C834,
C851, C853,
C859~C861,
DA801, DA802,
IC801,
L801~L803,
C855~C858,
R801~R807,
R106, R109,
Q9, C617
( P )* Power RAMP Confirma-
tion
- Follow steps 1 to 6 of (J) .
7.Confirm that Power RAMP is matching.
IC7,
C802~C806,
C808~C814,
C820, C819,
C822, C823,
C825, C827,
C826, C834,
C851, C853,
C859~C861,
DA801, DA802,
IC801,
L801~L803,
C855~C858,
R801~R807,
R106, R109,
Q9, C617
Items Check
Point
Procedure Check or
Replace Parts