Panasonic KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF Service Manual ▷ View online
14 ADJUSTMENTS (BASE UNIT)
If your unit have below symptoms, adjust or confirm each item using remedy column from the table.
Symptom
Remedy
The base unit does not respond to a call from handset.
Make adjustments in item (A)~(F), (I)~(M)
The base unit does not transmit or the transmit frequency is off.
Make adjustments in item (A)~(E), (H)~(J), (L)
The transmit frequency is off.
Make confirmation in item (A)~(E), (H)~(J), (L)
The transmit power output is low, and the operating distance between base unit and handset is
less than normal.
Make confirmation in item (H), (K)
The reception sensitivity of base unit is lowwith noise.
Make confirmation in item (K)
The transmit level is high or low.
Make adjustments in item (O)
The reception level is high or low.
Make adjustments in item (N)
The unit does not link.
Make confirmation in item (A)~(M)
The unit cannot charge.
Make confirmation in item (P)
* : Refer to Adjustment (P.37)
14.1. Adjustment
Please follow the items below when BBIC or EEPROM are replaced.
Items
Adjustment
Point
Procedure*
Check or
Replace Parts
(A)
2.65V Supply
Confirmation
-
1. Confirm that the voltage between TP187 and GND is 2.65V ± 0.2V.
IC2,Q8,C23,
C24,C25,C26,
C27,C38,R33,
R36,D5,C41,
R41,R42,Q9,
C40,D4,X1,
C32,C33,C36,
C37
(B)
4.0V Supply
Confirmation
-
1. Confirm that the voltage between TP91 and GND is 4.0V ± 0.2V.
D4,C40,Q9,
R41,R42,C41,
D5,C75,C78,
C69,C66,C67,
C76,IC3
(C)
VBACK Status
Confirmation
-
1. Confirm that the voltage between J102 and GND is 0V ± 0.4V.
IC2,Q8,C23,
C24,C25,C26,
C27,C38,R33,
R36,D5,C41,
R41,R42,Q9,
C40,D4,R33,
X1,C32,C33
(D)*
BBIC Confirmation
-
1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC2,X1,C32,
C33
(E)* BBIC Clock Adjustment
TP1
1. Execute the command "deactmac".
2. Execute the command "conttx".
3. Input Command rdeeprom_00_00_02, then you can confirm the current value.
4. Adjust the frequency of TP1 executing the command "setfreq 00 xx (where xx
2. Execute the command "conttx".
3. Input Command rdeeprom_00_00_02, then you can confirm the current value.
4. Adjust the frequency of TP1 executing the command "setfreq 00 xx (where xx
is the value)" so that the reading of the frequency counter is 10.368000MHz ±
3Hz.
IC2,IC3,L1,
C48,X1,C32,
C33
(F)* Hookswitch Check with
DC Characteristics
-
1. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
Ω
.
2. Set line voltage to 48V at on hook condition and line current to 40mA.
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.
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.
IC2,R7,R8,
R9,R10,R77,
Q2,Q3,D2,
C1,C2
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF
Items
Adjustment
Point
Procedure*
Check or
Replace Parts
(G)*
DTMF Generator
Confirmation
-
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 -3dBm ± 2dBm.
4. Execute the command "dtmf_lo".
5. Confirm that the lowfrequency (852.05HZ) group is -6dBm ± 2dBm.
2. Execute the command "hookoff" and "dtmf_up".
3. Confirm that the high frequency (1477.06HZ) group is -3dBm ± 2dBm.
4. Execute the command "dtmf_lo".
5. Confirm that the lowfrequency (852.05HZ) group is -6dBm ± 2dBm.
IC2,R32,C22,
R23,C80,C14,
C13,Q6,R22,
R21,R19,R20,
C12,D2,C1,
C2,R77,D3,
R12,Q2,R7,
R8,R9,R10,
Q3
(H)*
Transmitted Power
Confirmation
-
Remove the Antenna before starting step from 1 to 4.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: FP
·
Traffic Channel: 5
·
Traffic Slot: 4
·
Mode: Loopback
·
PMID: 0000
2. Execute the command "testmode".
3. Initiate connection from DECT tester. ("set up connect")
4. Confirm that the NTP value at ANT is 20dBm ~ 25dBm.
3. Initiate connection from DECT tester. ("set up connect")
4. Confirm that the NTP value at ANT is 20dBm ~ 25dBm.
IC2,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
(I)
Modulatoin Check and
Adjustment
ANT
Followsteps 1 to 3 of (H) above.
4. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/div using data
type Fig31.
5. Adjust the B-Field Modulation if required. (Execute the command "readmod"
5. Adjust the B-Field Modulation if required. (Execute the command "readmod"
and "wrtmod xx", where xx is the value.)
IC2,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
(J)
Frequency Offset
Confirmation
-
Followsteps 1 to 3 of (H) above.
4. Confirm that the frequency offset is < ± 40kHz.
IC2,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
(K)
Sensitivity Receiver
Confirmation
-
Followsteps 1 to 3 of (H) above.
4. Set DECT tester power to -88dBm.
5. Confirm that the BER is < 1000ppm.
5. Confirm that the BER is < 1000ppm.
IC2,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
(L)
Timing Confirmation
-
Followsteps 1 to 3 of (H) above.
4. Confirm that the Timing accuracy is < ± 5.0ppm.
IC2,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
(M)*
RSSI Level
Confirmation
-
Followsteps 1 to 3 of (H) above.
4. Set DECT tester power to -88dBm.
5. Execute the command "readrssi".
6. Confirm: 29 < returned value < 3E (hex)
5. Execute the command "readrssi".
6. Confirm: 29 < returned value < 3E (hex)
IC2,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF
Items
Adjustment
Point
Procedure*
Check or
Replace Parts
(N)* Receive Audio Check
and Adjustment
ANT
J1
1. Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: FP
·
Mode: Normal
·
PMID: 0000
2. Execute the command "testmode".
3. Initiate connection from DECT tester.
4. Execute the command "hookoff".
5. Execute the command "openau".
6. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
3. Initiate connection from DECT tester.
4. Execute the command "hookoff".
5. Execute the command "openau".
6. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
Ω
.
7. Set line voltage to 48V and line current to 40mA.
8. Connect DECT tester to Tel-simulator.
9. Input audio signal (200mVrms/1kHz tone) to Tel-simulator.
8. Connect DECT tester to Tel-simulator.
9. Input audio signal (200mVrms/1kHz tone) to Tel-simulator.
<DECT tester setting>
·
Scramble: On
·
AF Gen to ADPCM: Off
·
AF Meter Input: ADPCM
·
AF Gen Frequency: 1000Hz
·
AF Gen Level: 200mVrms
10. Confirm hearing tone: 510mVrms ± 85mVrms
11. Adjust audio level if required. (Make sure current value using "getmicgain". And
11. Adjust audio level if required. (Make sure current value using "getmicgain". And
then execute the command "setmicgain xx", where xx is the value.)
12. Confirm that the B-field audio distortion with DECT tester is < 5 %.
IC2,C21,R31,
C20,C11,R18,
R16,D3,R12,
Q2,R7,R8,
Q3,R9,R10,
D2,C1,C2,
R77,IC3,L1,
C43,C78,C75,
C69,C48,C72,
C66,C67,C76,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C86,R38
(O)* Transmit Audio Check
and Adjustment
ANT
J1
1. Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: FP
·
Mode: Normal
·
PMID: 0000
2. Execute the command "testmode".
3. Initiate connection from DECT tester.
4. Execute the command "hookoff".
5. Execute the command "openau".
6. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
3. Initiate connection from DECT tester.
4. Execute the command "hookoff".
5. Execute the command "openau".
6. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
Ω
.
7. Set line voltage to 48V and line current to 40mA.
8. Input audio signal (30mVrms/1kHz tone) to DECT tester.
8. Input audio signal (30mVrms/1kHz tone) to DECT tester.
<DECT tester setting>
·
Scramble: On
·
AF Gen to ADPCM: On
·
AF Meter Input: AF Voltm
·
AF Gen Frequency: 1000Hz
·
AF Gen Level: 30mVrms
9. Confirm hearing tone: 700mVrms ± 150mVrms.
10. Adjust audio level if required. (Make sure current value using "getspkrgain".
10. Adjust audio level if required. (Make sure current value using "getspkrgain".
And then execute the command "setspkrgain xx", where xx is the value.)
11. Confirm that the audio distortion at 600R of Tel-simulator is < 5 %.
IC2,R32,C22,
R23,C80,C14,
C13,R22,R21,
Q6,R18,R19,
R20,C12,D2,
C1,C2,R77,
R16,D3,R12,
Q2,R7,R8,
R9,R10,Q3,
IC3,L1,C43,
C78,C75,C69,
C48,C72,C66,
C67,C76,C57,
C73,L3,DA1,
R66,R67,C55,
C56,R78,R79,
C54,C58,C86,
R38
(P)
Charging Check
-
1. Connect Charge Contact 12
Ω
/2W register between charge+ and charge-.
2. Measure and confirm voltage across the regigster is 2.3V ± 0.2V.
D4,R43,R44
Note:
After the measuring, sock up the solder of TP.
* : PC Setting (P.35)is required beforehand.
The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.40).
* : PC Setting (P.35)is required beforehand.
The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.40).
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KX-TCD400RUB / KX-TCD400RUC / KX-TCD400RUF / KX-A140RUB / KX-A140RUC / KX-A140RUF
14.2. Adjustment Standard (Base Unit)
When connecting the Simulator Equipments for checking, please refer to below.
14.2.1. Component View
R66
R38
R67
R86
R87
R87
R88
R36
R58
R33
R52
R29
R31
R31
R55
R17
R16
R13
R21
R24
R12
R11
D6
R26
R22
R23
R72
R71
JMP4 JMP3
JMP2
JMP5
JMP8
JMP7
JMP6
JMP1
R7
R10
R74
R54
R53
R70
R2
R4
R5
R6
R1
R3
R77
R73
R9
R32
R27
R8
C14
C13
C80
C79
Q7
Q5
B C E
Q2
Q3
Q11
Q1
S1
Q4
J1
J2
R18
R20
R19
R28
C16
C17
R25
R14
R15
R56
R30
C19
D5
Q10
C18
C20
C25
Q8
Q6
B
C
E
C
E
D2
C40
D4
SA1
C77
RLY1
C3
C15
LED1
R68
R35
4
1
5
8
R43
R44
R45
A201
A202
L1
R42
R41
R41
R78
R79
Q9
C55
C53
C41
C43
C68
C48
C38
C27
C26
C29
C21
R57
C28
C12
C11
C9
C51
C22
C10
C1
C2
C63
D8
D1
D3
D7
L2
C4
C6
C7
C62
PbF
C60
C49
C74
R82
R81
R85
C5
C8
C23
C24
C24
X1
C34
C33
C35
C36
C30
C32
C37
C50
1
L3
C70
C57
C83
C85
C73
C71
C56
28
18
IC3
IC2
IC1
11
64
1
49
33
ANT
C66
C72
C58
C54
DA1
C81
C87
C84
C82
C75
C86
C78
C69
C88
C67
C76
GND
DECT tester
CMD60
(H) (I) (J) (K) (L)
(M)
(M)
V.V
OSC
Tel Simulator
AF Volt Meter
AF Generator
(N) (O)
Note:
(H) - (O) is refered to ADJUSTMENTS (BASE UNIT) (P.37)
K
X
-T
C
D
40
0R
U
B
/K
X
-T
C
D
40
0R
U
C
/K
X
-T
C
D
40
0R
U
F
/K
X
-A
14
0R
U
B
/K
X
-A
14
0R
U
C
/K
X
-A
14
0R
U
F
40
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