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3.2.5.
Troubleshooting by Symptom (Handset)
3.2.5.1.
Check Point (Handset)
[Changed from original section "9.3.1. Check Point (Handset)"]
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 (Handset) (P.19).
*: PC Setting is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Handset) (P.19).
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(A) Battery Supply
Confirmation
-
1. Confirm that the consumption current is < 200mA, that is, there is no short
circuit.
R102, C144,
F1, C140,
L103, IC101
C141, R201,
C102, C120,
C131
C803, C825,
C110, C802,
C804, C148,
D107, C109,
R121, C186,
IC103
F1, C140,
L103, IC101
C141, R201,
C102, C120,
C131
C803, C825,
C110, C802,
C804, C148,
D107, C109,
R121, C186,
IC103
(B) VDDDCDC2 Supply
Confirmation
-
1. Confirm that the voltage between VDDDCDC2 and GND is 3.3V ± 0.3V.
IC103, C140,
L103, R107,
IC101, C141,
R201, C102,
C120
L103, R107,
IC101, C141,
R201, C102,
C120
(C)* BBIC Confirmation
-
1. BBIC Confirmation (Execute the command “getchk”).
2. Confirm the returned checksum value.
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC103, X101,
C122, C123,
C127
C122, C123,
C127
(D) Charge Control Check &
Charge Current Monitor
Check
Check
-
1. Apply 5.5V between TP5(+) and TP6(-) with current limit of PSU to 250mA.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 75mA.
4. Confirm that the charge current is stable.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 75mA.
4. Confirm that the charge current is stable.
C101, C160,
R101, C161,
Q101, Q102,
C142, R108,
IC103
R101, C161,
Q101, Q102,
C142, R108,
IC103
(E)* Charge Detection (OFF)
Check
-
1. Stop supplying 5.5V to TP5(+) and TP6(-).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).
C101, C160,
R101, C161,
Q101, Q102,
C142, R108,
IC103
R101, C161,
Q101, Q102,
C142, R108,
IC103
(F)* Battery Monitor Check &
Adjustment (Important)
-
1. Apply 2.3V ± 0.005V between BATTERY (+) and BATTERY (-) with DC power.
2. Execute the command “deactmac” to stabilize the value.
3. Then, execute the command “readbatt”. The returned value is XX.
4. Confirm that XX is between 98 and A7.
2. Execute the command “deactmac” to stabilize the value.
3. Then, execute the command “readbatt”. The returned value is XX.
4. Confirm that XX is between 98 and A7.
98 < XX < A7 (Hex)
(If XX is out of range, change BBIC)
(If XX is out of range, change BBIC)
IC103, D107,
C148, C109
F1, R121,
C186
C148, C109
F1, R121,
C186
(G) Battery Low
Confirmation (Important)
-
1. Apply 2.40V between BATTERY (+) and BATTERY (-).
2. Confirm that there is no Speaker sound (Battery low alarm).
3. Apply 2.2V between BATTERY(+) and BATTERY(-).
4. Confirm that there is Speaker sound (Battery low alarm).
2. Confirm that there is no Speaker sound (Battery low alarm).
3. Apply 2.2V between BATTERY(+) and BATTERY(-).
4. Confirm that there is Speaker sound (Battery low alarm).
IC103, D107,
F1, C148
C109, R121,
C186
R114, D104
Q104, Q105,
RA102, BZ1
F1, C148
C109, R121,
C186
R114, D104
Q104, Q105,
RA102, BZ1
ex.)
checksum value
program number
011B
DCN2EA
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