Panasonic KX-TG1034B

45
KX-TG1034B/KX-TG1035S/KX-TGA101B/KX-TGA101S
9.2. Troubleshooting by Symptom (Base Unit and Charger Unit)
9.2.1. Check Point (Base Unit)
Please follow the items below after repairing.
Note:
After the measuring, suck up the solder of TP.
*: PC Setting (P.56) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.58).
9.3. Troubleshooting by Symptom (Handset)
9.3.1. Check Point (Handset)
Please follow the items below after repairing.
Note:
After the measuring, suck up the solder of TP.
*: Batch file Settings (P.62) is required beforehand.
The connections of adjustment equipment are as shown in Adjustment Standard (Handset) (P.63).
Items Check
Point
Procedure Check or
Replace Parts
(A) 3.3 V Supply Confirma-
tion
VDD3 1. Confirm that the voltage between test point VDD3 and GND is 3.3 V ± 0.2 V. IC1, C30, C32,
R38, R39, C36,
C37
(B) 2.5 V Supply Confirma-
tion
VDD2 1. Confirm that the voltage between test point VDD2 and GND is 2.5 V ± 0.2 V. Q9, C70, C71
(C) 1.8 V Supply Confirma-
tion
VDD1 1. Confirm that the voltage between test point VDD1 and GND is 1.8 V ± 0.1 V. Q8, R72, D12,
C68
(D)* 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 xx (where xx is
the value)” so that the reading of the frequency counter is 10.368000 MHz ±
10 Hz.
IC10, C111,
C112, X1, R73,
C62, C63
Items Check
Point
Procedure Check or
Replace Parts
(A)* 1.8 V Supply Adjustment 1.8 V 1. Confirm that the voltage between test point 1.8 V and GND is 1.8 V ± 0.02 V.
2. Execute the command “bandgap”, then check the current value.
3. Adjust the 1.8V voltage of VDD1 executing command “bandgap XX“(XX is the
value).
IC1, Q2, C10
(B) DC/DC Supply Confir-
mation
3.3 V 1. Confirm that the voltage between test point 3.3 V and GND is 3.3 V ± 0.3 V
(Backlight is ON).
IC1, F1, C1,
C2, C3, R1,
Q1, D1, L1
(C) 2.5 V Supply Confirma-
tion
2.5 V 1. Confirm that the voltage between test point 2.5 V and GND is 2.5 V ± 0.1 V. IC1, Q3, C5
(D) Charge Control Check &
Charge Current Monitor
Check
- 1. Apply 3.5 V between CHG(+) and CHG(-) with DC power supply and set cur-
rent limit to 250 mA.
2. Confirm that the current limit LED of DC power supply is ON/OFF.
3. Decrease current limit of DC power supply to 100mA.
4. Confirm that the current limit LED of DC power supply is stable. (Current limiter
is ON.)
(If charge control cannot be confirmed by this procedure, please use battery to hand-
set power supply and try again.)
IC1, Q4, Q5,
Q9, D6, D7,
D8, L4,
L5, R5, R6,
R7, R8, F1
(E) Battery Low Confirma-
tion
- 1. Apply 2.40 V between BATT(+) and BATT(-).
2. Confirm that there is no flashing of Battery Icon.
3. Apply 2.25 V ± 0.08 V between BATT(+) and BATT(-).
4. Confirm that there is flashing of Battery Icon.
IC1, F1, C1
C3, R12
(F)* BBIC Clock Adjustment CLK 1. Apply 2.6 V between BATT(+) and BATT(-) with DC power.
2. Execute the command “conttx”.
3. Input Command “rdeeprom 00 01 01”, then you can confirm the current value.
4. Adjust the frequency of CLK executing the command “setfreq xx (where xx is
the value)” so that the reading of the frequency counter is 10.368000 MHz ± 10
Hz.
Note:
CLK is displayed only for a few seconds when executing the command “conttx”
after battery is inserted.
IC1, X1, C6,
C7, R19,
IC4, C57