Panasonic KX-TCD430GC Service Manual page 38

Items
(B) 4.0V Supply
Confirmation
(C) VBACK Status
Confirmation
(D) BBIC
* Confirmation
(E) BBIC Clock
* Adjustment
(Important)
(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.
Procedure*
38
Check
D4,C40,Q9
C41,D5,C75
C66,C67,C7
IC2,Q8,C23
C26,C27,C3
D5,C41,R41
C40,D4,R33
IC2,X1,C32
IC2,IC3,L1
C48,X1,C32
.
IC2,R7,R8,
R9,R10,R77
Q2,Q3,D2,