Troubleshooting By Symptom (Base Unit And Charger Unit) - Panasonic KX-TG1711MEB Service Manual

3.2.4.

Troubleshooting by Symptom (Base Unit and Charger Unit)

3.2.4.1. Check Point (Base Unit)
[Changed from original section "9.2.1. Check Point (Base Unit)"]
Please follow the items below when BBIC or EEPROM is replaced.
Note:
After the measuring, suck up the solder of TP.
*: PC Setting is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.18).
Items
(A) 2.65V Supply
Confirmation
(B) VDDIO Confirmation
(C)* BBIC Confirmation
(D)* BBIC Clock Adjustment
(Important)
(E)* Hookswitch Check with
DC Characteristics
(F)* DTMF Generator Check -
(G)* Transmitted Power
Confirmation
Adjustment
Point
- 1. Confirm that the voltage between VDD and GND is 2.65V ± 0.2V.
- 1. Confirm that the voltage between C24 and GND is 2.5 ± 0.3.
- 1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
P1.0 1. Execute the command "EnableClockOutput".
CLK 2. Input Command "GetFreq", then you can confirm the current value.
3. Check X'tal Frequency. (10.368 MHz ± 100 Hz).
4. If the frequency is not 10.368MHz ± 100Hz, adjust the frequency of CLK
executing the command "setfreq 04 xx (where xx is the value)" so that the
reading of the frequency counter is 10.368000 MHz ± 5 Hz.
- 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 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 0mA + 2mA.
1. Connect J1 (Telephone Socket) to DTMF tester.
2. Execute the command "hookoff" and "dtmf_up".
3. Confirm that the high frequency (1477.06Hz) group is -6.0 ± 2dBm.
4. Execute the command "dtmf_low".
5. Confirm that the low frequency (852.05Hz) group is -8.0 ± 2dBm.
- Remove the Antenna before starting steps from 1 to 5.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: FP
• Traffic Channel: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
2. Execute the command "testmode".
3. Initiate connection from DECT tester. ("set up connect")
4. Execute the command "ANT2".
5. Confirm that the NTP value at ANT is 19dBm~25dBm.
Procedure
ex.) checksum value program number
0152
12
DCM1EB
Check or
Replace Parts
C58, C40, F1,
C34, IC2, R35,
R36, C28,
C11, C48, R17
IC3, X1, C22
C23, C17
IC3, X1, C22
C23, C17
IC3, X1, C22
C23, C17
IC3, C30, C31,
D2, Q3, R26,
R22, Q2, C45,
C21, R18,
R15, P101,
SA1
IC3, R2, C4,
C5, R7, R9,
R10, C9, Q1,
R6, R12, D1,
Q3, R26, R22,
Q2, C45, C21,
R18, R15, D2,
C30, C31,
P101,SA1
IC3, C813,
P101, SA1,
C811, C812
C807, C819,
C826, D801,
C808, C810,
D6, C809,
C39, C38,
RA43, C823,
C821, RA801,
C803, C825,
C44, C806,
C802, C804,
C820, C830,
C815, L1