Panasonic KX-TCA275RU Service Manual ▷ View online
45
KX-TCA275RU
[4]-(6) Downloading Start
After several seconds, Display shows "Flash Program Start".
46
KX-TCA275RU
[4]-(7) Downloading Complete
If downloading finished, display shows "Download finished successfully!".
Click "OK" then disconnect the serial PC cable.
11.2. Adjustments (Handset and Charger Unit)
11.2.1. Adjustment (Handset)
When you change IC3, you must adjust (A)(F)(H)(I)(K)
Items
Adjustment
Point
Procedure*
Check or
Replace Parts
(A)* 1.8V Supply Confirma-
tion
CK17
1. Confirm that the voltage between test point "CK17" and GND is 1.8V±0.02V.
2. Adjust the 1.8V voltage of CK17 executing command "VDD XX" (XX is the
2. Adjust the 1.8V voltage of CK17 executing command "VDD XX" (XX is the
value).
IC3, Q8, R26
(B) 3V Supply Confirmation
CK18
1. Confirm that the voltage between "CK18" and GND is 3.0V±0.15V.
IC3, Q10,
R28, R32
R33
R28, R32
R33
(C)* Software Confirmation
-
1. BBIC Confirmation (Execute the command "SLF", and “VER”).
2. Confirm the returned checksum value.
2. Confirm the returned checksum value.
Connection of checksum value and software version is shown below.
IC3, X1,
C17
(IC1, IC2)
C17
(IC1, IC2)
(D) Charge Control Check &
Charge Current Monitor
Confirmation
Confirmation
-
1. Apply 6V between CN3(+) and CN4(-) with current limit of PSU to 200mA.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 100mA.
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 100mA.
4. Confirm that the charge current is stable.
IC3, R5,
Q2, Q3, Q4,
L1, L2, R10,
R14, D11,
D13, R15, R16
Q2, Q3, Q4,
L1, L2, R10,
R14, D11,
D13, R15, R16
(E)* Charge Detection (OFF)
Confirmation
-
1. Stop supplying 6V to CN3(+) and CN4(-).
2. Execute the command "BTS".
3. Confirm that the returned value is 0x00 (hex).
2. Execute the command "BTS".
3. Confirm that the returned value is 0x00 (hex).
IC3, R10, R5,
L1, L2, C7
L1, L2, C7
(F)* Battery Monitor Confir-
mation
-
1. Apply 3.5V ± 0.02V between BATT(+) and BATT(-).
2. Execute the command "LED 0", then "AD1".
3. Confirm:
2. Execute the command "LED 0", then "AD1".
3. Confirm:
20 returned value 38 (Hex)
4. Adjust the Battery Monitor executing command.
(XX=returned value, YY=XX-9(hex))
WB2 XX
WB4 XX
WB3 YY
WB2 XX
WB4 XX
WB3 YY
IC3,
R35, R38
R35, R38
47
KX-TCA275RU
Note:
Execute 3 command "MCW", "BWP","M2B 0" in order after adjustment.
If not, handset display shows error message after turning on again.
If not, handset display shows error message after turning on again.
1) Run "Flash Program.exe"
2) Select "test command" sheet.
3) Enter command in command column.
4) Press "Send" button.
(G) Battery low Confirmation
-
1. Apply 3.55V between BATT(+) and BATT(-).
2. Confirm that there is no flashing of Battery Icon.
3. Apply 3.4V between BATT(+) and BATT(-).
4. Confirm that there is flashing of Battery.
2. Confirm that there is no flashing of Battery Icon.
3. Apply 3.4V between BATT(+) and BATT(-).
4. Confirm that there is flashing of Battery.
IC3,
R35, R38
R35, R38
(H)* BBIC Clock Adjusment
SYRI
1. Execute the command "RFC 1".
2. Adjust the frequency of SYRI executing the command "SFR xx (where xx is
2. Adjust the frequency of SYRI executing the command "SFR xx (where xx is
the value)" so that the reading of the frequency counter is 10.368000MHz
±10Hz.
±10Hz.
IC3, X1, C17,
C14, L3,
R23,
RF module
C14, L3,
R23,
RF module
(I)* Modulatoin Check and
Adjusment
-
1.Set RFPI to 0102030405 in CMD60.
2.Excure the command “TST 01 02 03 04 05”.
3.Press “Set up connection” at CMD 60.
4.Confirm that the B-Field Modulation is 360kHz/div~380kHz/div using data
type Fig 31.
5.Adjust the B-Field Modulation if required. (Execute the command "SMR xx",
where xx is the value.)
2.Excure the command “TST 01 02 03 04 05”.
3.Press “Set up connection” at CMD 60.
4.Confirm that the B-Field Modulation is 360kHz/div~380kHz/div using data
type Fig 31.
5.Adjust the B-Field Modulation if required. (Execute the command "SMR xx",
where xx is the value.)
IC3,
RF module
RF module
(J)* RSSI Level Confirmation
-
Follow steps 1 to 3 of (I) above.
4.Set DECT tester power to -93dBm.
5.Execute the command "RSS".
6.Confirm that the returned value is 0x8±8 (hex).
7.Set DECT tester power to -63dBm.
8.Execute the command "RSS".
9.Confirm that the returned value is 0x1D±8 (hex).
5.Execute the command "RSS".
6.Confirm that the returned value is 0x8±8 (hex).
7.Set DECT tester power to -63dBm.
8.Execute the command "RSS".
9.Confirm that the returned value is 0x1D±8 (hex).
IC3,
RF module
RF module
(K) RSSI Calibration Confir-
mation
-
1. Set DECT Tester Power to -93dbm.
2. Run "RSS" and record the returned value.
3. Run following command and verify the value xx is returned value is step2.
2. Run "RSS" and record the returned value.
3. Run following command and verify the value xx is returned value is step2.
EPW 00 69 1 XX
EPR 00 69 00 01
EPR 00 69 00 01
4. Set DECT Tester Power to -63dbm.
5. Run "RSS" and record the returned value.
6. Run following command and verify the value xx is returned value is step5.
5. Run "RSS" and record the returned value.
6. Run following command and verify the value xx is returned value is step5.
EPW 00 6A 1 XX
EPR 00 6A 00 01
EPR 00 6A 00 01
IC3, CN5,
R6-9, R11,
R12
R6-9, R11,
R12
(L) Country setting
1. Excute the command "DCS 4"
Items
Adjustment
Point
Procedure*
Check or
Replace Parts
48
KX-TCA275RU
11.2.2. Adjustment Standard (Handset)
When connecting the Simulator Equipments for checking, please refer to below.
IC601
CN1
IC2
IC3
IC4
Q8
Q17
C26
R30 R36
R39
R75
R31
D16
Q11
Q12
C33
C34
Q4
X1
C109
R28
D13
C27
R29
C19
C29
L4
R6
R11
C9
R12
R7
R9
C121
C108
C120
C110
D12
R16
R52
R40
C12
C20
R5
C5
L1
IC1
IC602
FIL601
C674
C657
C646
C650 C656
C678
C651
C65 C64
C68
L614
TP601
D602
C649
R632
C671
R633
R634
C672
C683
C601
C684
C677
C681
C676
C682
R18 R19
R20
R17
CN7
SYRI
C53 C60
C44
R41 C35
CK16
R56
C57
R63
C70
C2
CK15
C31
R38
R68
C63
C59
C11
C16
C14
C45
C51
C47
C25
C49
C48
C604
C603
C605
R613
C606
R603
L602
L630
R608
C623
R606
C621
R605
C620
C624
R610
R612
R614R611
C625
L601
FB606
R615
C54
C56
C56
C647
FB603
C626
C691
C627
L608
C630 C633
C631 L606
C631 L606
C632
C648
L616
JP601
C673
C666
C670
L615
L631
L610
C653
C680
L611
C652
L621
C665
L620 D601
L617
C660
C643
R645
C607
C675
D14
R53
C40
R21
R22
R4
R3
R25
R24
C72
C46
R58
R67
C42
R62
R71
R74
C122
R60
R54
R57
C55
C66
C30
C52
R61
C50
C43
C13
C15
R23
C18
R15
R13
C7
R10
L2
C6
IP101
D11
R14
L3
C17
R55
R35
D15
R65
R64 R59
R42
R66
C609
C622
C610
R607
R626
C608
R604
C634
L632
C642
C645
C690
C623
L605
L603
C67 C62
R625
C654
C60
Q5
C41
Q14
Q13
Q7
Q1
IC5
CN5
Q6
IC6
Q10
R32
R33
R26
R37
R1
C28
C22
CK3
CK10
C10
R73 R8
CK8 CK6 CK4 C74
C8
C1
CN6_2
R34
Q2
CK1
Q3
R72
C39
C61
C58
C36
C38
C69
C37
C73 C24 C23 C21 R43 R27
CK2
C4
R69
R70
CK5
PbF
A
R BI
PSUP1708Z -A
KX-TCA275RU CIRCUIT BOARD (HANDSET) Component View
TP601
GND
AF VOLT METER
OSCILLOSCOPE
DIGITAL
VOLTAGE METER
VOLTAGE METER
AF OSC
DC POWER
SUPPLY
SUPPLY
DC POWER
SUPPLY for charge
SUPPLY for charge
47uF
47uF
8
Ω
AF
OSC
OSC
PC
PSZZ2CA155EU
AF VOLT
METER
METER
150
Ω
OSCILLO
SCOPE
SCOPE
47uF
FREQUENCY
COUNTER
COUNTER
Click on the first or last page to see other KX-TCA275RU service manuals if exist.