13 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND
CHARGER UNIT)
If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
or not.
*: Refer to Check Point (Base Unit) (P.52)
13.1. Check Point (Base Unit)
Please follow the items below when BBIC or EEPROM or FLASH ROM is replaced.
Note:
After the measuring, sock up the solder of TP.
*: PC Setting (P.63) is required beforehand.
The connections of adjustment equipments are as shown in Adjustment Standard (Base Unit) (P.57).
Items Check
Point
Procedure Check or
Replace Parts
(A) 3.3V Supply
Confirmation
TP14 1. Confirm that the voltage between test point VDD3 and GND is 3.3V ± 0.2V. D1, IC1, C1,
C119, C2, R8,
R9, C114, C34,
C8, R85
(B) 2.5V Supply
Confirmation
TP22 1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V. Q2, C5, C7,
C168
(C)* 1.8V Supply
Confirmation
TP15 1. Confirm that the voltage between test point VDD1 and GND is 1.8V ± 0.1V. Q3, C6, C11,
C48, C4, C37,
C39, C44, C45
(D)* BBIC Confirmation - 1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC8, X1, C42,
C43, R40, C6,
C11, C48, C4,
C37, C39, C44,
C45, R124,
R125, C153
(E)* EEP-ROM Confirmation - 1. EEP-ROM Confirmation (Execute the command
"ChkTCD210FXrev025_14_3.bat").
2. Confirm the returned checksum value (Checksum is 20865).
IC3, C53, R56,
R57
(F)* BBIC Clock Adjustment CLK 1. Input Command “rdeeprom 00 01 01”, then you can confirm the current value.
2. Adjust the frequency of CLK executing the command "setfreq 00 xx (where xx
is the value)" so that the reading of the frequency counter is 10.368000MHz ±
10Hz.
IC2, IC4, R124,
R125, C153,
X1, C42, C43
(G)* Hookswitch Check with
DC Characteristics
- 1. Connect CN1 (Telephone Socket) to Tel-simulator which is connected with
600 Ω.
2. Set line voltage to 48V and line current to 40mA at off-hook condition of
normal 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 less than + 0.8mA.
CN1, L6, L7,
Q4, R23, R25,
Q5, R26, R28,
IC8, D3
52
KX-TCD300FXS / KX-TCD300FXT / KX-TCA130FXS / KX-TCA130FXT
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