Panasonic KX-TCD460UA / KX-A146UA-1 / KX-A146UA Service Manual ▷ View online
Items
Procedure
Check or
Replace Parts
(M)*
RSSI Level
Confirmation
Follow steps 1 to 3 of (H) above.
4. Set DECT tester power to -70 dBm.
5. Execute the command “readrssi”.
6. Confirm: 52
returned value
72 (hex) (0 × 62 ± 0 × 10 (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
(N)*
Receive Audio Check
and Adjustment
1.
Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: FP
·
Mode: Normal
·
PMID: 00000
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
Ω
.
7.
Set line voltage to 48 V and line current to 40 mA.
8.
Connect DECT tester to Tel-simulator.
9.
Input audio signal (200 mVrms/1kHz tone) to Tel-simulator.
<DECT tester setting>
·
Scramble: On
·
AF Gen. to ADPCM: Off
·
AF Meter Input: ADPCM
·
AF Gen. Frequency: 1000 Hz
·
AF Gen. Level: 200 mVrms
10. Confirm hearing tone: 380 mVrms ± 100 mVrms
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
1.
Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: FP
·
Mode: Normal
·
PMID: 00000
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
Ω
.
7.
Set line voltage to 48 V and line current to 40 mA.
8.
Input audio signal (30 mVrms/1 kHz tone) to DECT tester.
<DECT tester setting>
·
Scramble: On
·
AF Gen. to ADPCM: On
·
AF Meter Input: AF Voltm
·
AF Gen. Frequency: 1000 Hz
·
AF Gen. Level: 30 mVrms
9.
Confirm hearing tone: 300 mVrms ± 100 mVrms.
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
45
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
Items
Procedure
Check or
Replace Parts
(P)
Charging Check
1.
Connect Charge Contact 12
Ω
/2 W resistor between charge+ and charge-.
2.
Measure and confirm voltage across the resistor is 2.3 V ± 0.2 V.
D4,R43,R44
Note:
After the measuring, sock up the solder of TP.
*: PC Setting (P.41) is required beforehand.
The connections of the adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.47).
46
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
15.2. Adjustment Standard (Base Unit)
When connecting the Simulator Equipment for checking, please refer to below.
15.2.1. Component View
Q1
S1
L2
L1
PbF
X1
IC1
IC3
IC2
JMP6
JMP2
JMP4 JMP3
JMP1
C48
C27
C68
C41
C43
R38
R66
R78
R79
L3
C53
C55
C70
C96
C71
DA1
R42
R41
C85
C83
C82
C84
C57
C21
C29
C35
C34
C34
C33
C32
C32
C62
C7
C8
C9
D9
C90
C95
C5
C49
C74
C2
C1
C63
C4
C11
C14
C6
C13
C10
R3
R1
R6
R2
R4
C36
C30
C28
R86
R87
R88
R29
R30
C19
C12
C16
C17
C51
C22
C18
C23
C24
C20
R31
R67
R58
R57
R35
R71
R72
R81
R82
R53
R54
R56
R8
C60
R55
R19
R20
R25
R28
R13
R14
R11
R15
R74
R73
R7
R77
D7
D8
R70
R85
R5
R9
R10
R27
R23
C80
C79
R32
R24
D6
R12
R22
R21
R16
R18
R18
R26
R17
D1
D5
C89
R89
C92
D2
D3
C88
C72
C66
C56
B C E
B C E
Q3
Q7
Q5
Q10
Q2
Q11
Q4
1
Q8
4
5
8
1
11
28
18
ANT
J1
A201
A202
J2
Q9
C81
C87
C54
C58
C69
C98
C97
C78
C37
R36
R33
R52
R52
C50
C38
C26
C77
JMP5
JMP8
JMP7
RLY1
R44
R43
C73
R68
C91
C86
C67
C76
Q6
C15
C25
D4
L4
C93
C94
SA1
C40
C3
1
64
48
49
33
32
16
17
17
DECT Tester
CMD60
Dummy
Handset
Handset
150
Ω
AF VOLT
METER
SP
MIC
6.3V
47
47
µ
F
AF
OSC
OSC
(H) (I) (J) (K) (L) (M)
Note:
(H) - (M) is referred to Adjustment (Base Unit) (P.43)
KX
-T
CD4
60UA
/
KX
-A1
46UA-
1
/
KX
-A
146U
A
47
15.2.2. Flow Solder Side View
TP1
TP84
TP97
TP82
TP187
TP91
TP188
TP101
TP89
TP2
1
2
4
6
TP5
TP90
TP50
TP202
TP201
TP45
TP3
TP39
TP40
J101 J103 J104 J102 J105
+2.65V
SD
A
A
SCL
GND
VBA
CK
CHARGE
PbF
CHARGE
RINGER
RINGER
C99
Digital
Volt Meter
Volt Meter
PC
Digital
Volt Meter
DC POWER
6V
Digital
Volt Meter
Frequency
Counter
Counter
Digital
Volt Meter
Volt Meter
Digital
Volt Meter
Volt Meter
Relay
Detection
Circuit
SDA
SCL
GND
VBACK
GND
GND
TP187
GND
CHARGE+
12
2w
GND
TP1
TP101
GND
GND
TP91
GND
TP45
DTMF
Tester
Tester
Call - ID
Simulator
Simulator
BELL
Simulator
Simulator
LOOP
Simulator
Simulator
AF
OSC
AF VOLT
METER
OSC
600
TP3
TP40
GND
TP2
(A)
(D) (E) (F) (G)
(H) (N) (O)
(H) (N) (O)
(C)
(P)
(E)
(B)
(G)
Note:
(A) - (P) is referred to Adjustment (Base Unit) (P.43)
KX
-T
CD4
60UA
/
KX
-A1
46UA-
1
/
KX
-A
146U
A
48
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