Troubleshooting By Symptom (Base Unit And Charger Unit); Check Point (Base Unit) - Panasonic KX-TG9581B Service Manual

9.2.

Troubleshooting by Symptom (Base Unit and Charger Unit)

9.2.1.

Check Point (Base Unit)

Please follow the items below when BBIC, EEPROM or FLASH is replaced.
Note:
After the measuring, suck up the solder of TP.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.58).
Items
(A) VBAT Supply Confirma-
tion
(B) 3.0V Supply Confirma-
tion
(C) 1.8V Supply Confirma-
tion
(D) 2.8V Supply Confirma-
tion
(E) +1.8V Supply Confirma-
tion
(F)* BBIC Confirmation
(G)* EEPROM Confirmation
(H)* BBIC Clock Adjustment
(I)* Hookswitch Check with
DC Characteristics
(J) DTMF Generator Check
Check
Point
VBAT 1. Confirm that the voltage between test point VBAT and GND is 2.6 V ± 0.2V.
VDD2 1. Confirm that the voltage between test point VDD2 and GND is 3.0 V ± 0.2 V.
VDD1 1. Confirm that the voltage between test point VDD1 and GND is 1.8 V ± 0.2 V.
VDD3 1. Confirm that the voltage between test point VDD3 and GND is 3.0V ± 0.2 V.
VDD5 1. Confirm that the voltage between test point VDD5 and GND is 1.8V ± 0.2V.
- 1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
ex.)
- 1. EEPROM Confirmation (Execute the command
"sendchar EPV").
2. Confirm the returned value.(Value for reference is written at "EEPROM C/
SUM" in Software_Version_Table.xls).
CLK 1. Check X'tal Frequency. (10.368 MHz ± 100 Hz).
Input Command "rdeeprom 00 01 01", then you can confirm the current value.
2. If the frequency is not 10.368 MHz ± 100 Hz, Adjust the frequency of CLK exe-
cuting the command "setfreq xx (where xx is the value)" so that the reading of
the frequency counter is 10.368000 MHz ± 100 Hz.
- 1. Connect Tel_Jack 1 (Line 1)/Tel_Jack 2 (Line 2) (Telephone Socket) to Tel-
simulator which is connected with 600 Ω.
2. Set line voltage to 48 V and line current to 40 mA at off-hook condition of nor-
mal telephone.
3. Execute the command "hookoff"
4. Confirm that the line current is 40 mA ± 5 mA.
5. Execute the command "hookon".
6. Confirm that the line current is less than + 0.8 mA.
- 1. Connect Tel_Jack 1 (Line 1)/Tel_Jack 2(Line 2) (Telephone Socket) to DTMF
tester. (Road=600 Ω)
2. Link Portable and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -6 dBm ± 2 dBm.
5. Confirm that the low Group is -8 dBm ± 2 dBm.
Procedure
checksum value program number
E423 JGU1AA
43
KX-TG9581B/KX-TG9582B/KX-TGA950B
Check or
Replace Parts
IC341, F301,
F900, D901,
Q903, IC901,
L901, D1001,
IC904 C341,
C342, C386
IC601, Q607,
L902, IC905
IC601, Q606
IC601, Q607,
L902, IC905,
D603
IC701, Q701
IC601, X601
IC604, R644,
C607, C629
IC601, X601
<Line 1>
PO101,D101,
Q101, R103,
Q102, Q103,
R108
<Line 2>
PO201,D201,
Q201, PC201,
Q203, R203,
R208
<Line 1>
IC601(K3),
C112, Q103,
R111, Q101,
D101, PO101
<Line 2>
IC701(21),
C218, R215,
T202, C212,
R210, R211,
Q201, D201,
P201