Panasonic KX-TCD410AXM Service Manual page 38

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Items
(B 4.0V Supply
) Confirmation
(C VBACK Status
) Confirmation
(D BBIC
)* Confirmation
(E BBIC Clock
)* Adjustment
(F) Hookswitch
* Check with DC
Characteristics
Adjustment
Point
1. Confirm that the voltage between TP91 and GND is 4.0V ± 0.2V.
-
1. Confirm that the voltage between J102 and GND is 0V ± 0.4V.
-
1. BBIC Confirmation (Execute the command "getchk").
-
2. Confirm the returned checksum value.
Connection of checksum value and program number is
shown below.
1. Execute the command "deactmac".
TP1
2. Execute the command "conttx".
3. Input Command "rdeeprom 00 00 02", then you can confirm the current value.
4. Adjust the frequency of TP1 executing the command "setfreq 00 xx (where xx is
the value)" so that the reading of the frequency counter is 10.368000MHz ± 3Hz.
-
1. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
2. Set line voltage to 48V at on-hook condition and line current to 40mA at off-hook
condition of nomal telephone.
3. Execute the command "hookoff"
4. Confirm that the line current is 40mA ± 5mA.
5. Execute the command "hookon".
6. Confirm that the line current is 0mA + 2mA.
Digitized in Heiloo, Holland
Procedure
38
11/8/2014
Check
Replac
Parts
D4, C4
Q9,
R41, R4
C41,
D5, C7
C78,
C69, C6
C67,
C76, IC
IC2, Q
C23,
C24, C2
C26,
C27, C3
R33,
R36, D
C41,
R41, R4
Q9,
C40, D
R33,
X1, C3
C33
IC2, X
C32,
C33
IC2, IC
L1,
C48, X
C32,
C33
IC2, R
.
R8,
R9, R1
R77,
Q2, Q3,
C1, C