Panasonic KX-TCD287UAT / KX-TCA128UAT Service Manual ▷ View online
Items
Check
Point
Procedure
Check or
Replace Parts
(O)*
RSSI Level
Confirmation
ANT/PC
serial port
Follow steps 1 to 6 of (I).
7.Execute the command “readrssi”.
8. Confirm that the returned value is 22 ± A (hex).
IC2, IC8, R124,
R125, C153,
C140, C141,
C140, C141,
DA1, C142,
C143, C144, L3,
L4, R118, R119,
L4, R118, R119,
C135, R115,
R116, Q6,
C145, C147,
C149, C151,
C157, R123,
C158, C159,
C160, C161,
C162, C163,
C164, C136,
R117, R127,
C156, C154,
C149, C151,
C157, R123,
C158, C159,
C160, C161,
C162, C163,
C164, C136,
R117, R127,
C156, C154,
C155
(P)
Power RAMP
Confirmation
ANT/RF
analyzer
Follow steps 1 to 6 of (I).
7.Confirm that power RAMP is matching.
IC2, IC8, R124,
R125, C153,
C140, C141,
C140, C141,
DA1, L10, L11,
C57, C134,
C144, L3, L4,
R118, R119,
C135, R115,
C135, R115,
R116, Q6,
C145, C147,
C149, C151,
C157, R123,
C158, C159,
C160, C161,
C162, C163,
C164, C136,
R117, R127,
C156, C154,
C149, C151,
C157, R123,
C158, C159,
C160, C161,
C162, C163,
C164, C136,
R117, R127,
C156, C154,
C155
(Q)*
Audio Check
MICP/MIC
M/CN3
1.
Link with handset.
2.
Input -45dBm/1kHz to mic of handset.
Measure the level at line I/F and distortion level.
3.
Confirm that the level is -8.5dBm ± 2.0dBm and that the distortion level is <
5% at tel line (600
5% at tel line (600
Ω
load).
4.
Input -20dBm/1kHz to Line I/F.
Measure the level at receiver of handset and distortion level
(*Receive volume set to second position from minimum).
5.
Confirm that the level is -20.5dBm ± 2.0dBm and that the distortion level is <
5% at receiver (volume middle, 150
5% at receiver (volume middle, 150
Ω
Load).
IC8, CN1,SA1,
L6, L7, D3, Q4,
Q5, R23, R25,
R26, R28
(R)
Charging Check
TP1/TP2
1.
Connect charge contact 12
Ω
/2W resistor between charge+ and charge-.
2.
Measure and confirm voltage across the resistor is 3.10V ± 0.2V.
R4, R5, D6,
C107, C180,
C181, D1
29
KX-TCD287UAT / KX-TCA128UAT
•
Serial JIG
JIG Cable: PQZZ1CD300E*
•
PC which runs in DOS mode
•
Batch file CD-ROM for setting: PQZZTCD287UA
Note:
*: If
you
have
the
JIG
Cable
for
TCD500
series
(PQZZ1CD505E),
change
the
following
values
of
resistance. Then you can use it as a JIG Cable for both
TCD300 and TCD500 series. (It is an upper compatible JIG
Cable.)
TCD300 and TCD500 series. (It is an upper compatible JIG
Cable.)
Resistor
Old value (k
Ω
)
New value (k
Ω
)
R2
22
3.3
R3
22
3.3
R4
22
4.7
R7
4.7
10
8.2. The Setting Method of JIG (Base Unit)
8.2.1. Preparation
8.2.1.1. Equipment Required
•
DECT tester: Rohde & Schwarz, CMD 60 is recommended.
•
Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4ppm).
Hewlett Packard, 53131A is recommended.
•
Digital multi-meter (DMM): it must be able to measure voltage and current.
•
Oscilloscope
8.2.1.2. JIG and PC
8.2.2. PC Setting
8.2.2.1. Connections
Connect the AC adaptor to CN1 (base unit).
Connect the JIG Cable GND (black).
Connect the JIG Cable URX (red) and UTX (yellow).
Note:
*: Com port names may vary depending on what your PC calls it.
30
KX-TCD287UAT / KX-TCA128UAT
8.2.2.2. PC Setting
Note:
•
“****” varies depending on the country.
•
See the table below for frequently used commands.
Command name
Function
Example
rdeeprom
Read the data of EEPROM
Type “rdeeprom 00 00 FF”, and the data from
address “00 00” to “FF” is read out.
address “00 00” to “FF” is read out.
readid
Read ID (RFPI)
Type “readid”, and the registered ID is read out.
writeid
Write ID (RFPI)
Type “writeid 00 18 E0 0E 98”, and the ID “0018 E0 0E
98” is written.
98” is written.
setfreq
Adjust frequency of RFIC
Type “setfreq nn”.
hookoff
Off-hook mode on Base
Type “hookoff”.
hookon
On-hook mode on Base
Type “hookon”.
getchk
Read checksum
Type “getchk”.
wreeprom
Write the data of EEPROM
Type “wreeprom 01 23 45”. “01 23” is address and “45”
is data to be written.
is data to be written.
31
KX-TCD287UAT / KX-TCA128UAT
8.3. Adjustment Standard (Base Unit)
8.3.1. Component View
When connecting the simulator equipment for checking, please refer to below.
C265
R121
R118
C147
C135
C151
L12
DA1
L4
Z1
Z2
L3
L13
L10
L11
C141
C143
C137
C144
C266
C138
R120
R119
C142
C146
C145
C150
C149
C57
C140
C157
C158
C158
R124
R125
C153
C165
C160
C159
C162
C163
C156
C90
R93
R90
R9
R8
C114
C8
C29
C101
C77
C75
C74
C205
R70
R107
R17
R16
C189
C251
C315
C187
C1
C9
R106
R161
R91
R92
R24
R38
R85
R46
R45
R27
C27
C32
C22
C173
C38
R22
C17
C44
R94
Q90
R56
C53
C166
R127
R126
R117
Q6
Q1
C3
C2
C12
C13
C14
C15
C107
C80
R5
L7
SA1
D1
L6
R4
C181
C180
TP16_CHARGE+
TP15_CHARGE-
D14
D4
D15
C164
R115
R105
C170
C134
R116
J2
D2
D12
D11
J1
C212
C206
C102
C136
C161
C155
C154
ANT_1
ANT_2
GND
TP5
TP4
TP3
TP2
TP1
RX1 TX1
PbF
R64
R55
R163
R88
R87
R86
R84
C39
R40
R159
R139
R134
R130
C197
C127
C169
C255
C311
C256
C258
C201
C174
D20
D8
D7
C305 C303
C302
C45
C65
C304
C195
C306
R132
C254
C167
C50
C52
IC12
IC11
C313
C172
C171
C262
C264
C312
R140
R141
R147
SPEAKER-
SPEAKER+
R133
C42
C43
C37
C34
C191
C184
C190
C36
C30
C48
C28
C310
C316
L16
L8
C207
C203
C314
C252
C198
C250
R51
R67
R78
R79
R69
R68
R42
Q8
R50
R44
R43
R72
C215
Z5
Z6
C121
C123
C122
D18
BUZ1
IC2
R57
IC3
X1
IC8
IC4
Q2
Q3
Q15
Q16
Q101
Q100
CN3
R142
R149
C259
R145
R32
L15
C11
C7
C5
C4
C49
C168
IC1
IC9
R158
R157
R154
R162
C307
C301
C301
C194
C192
C130
C24
C76
C40
C108
C109
C47
C25
C214
C213
1
1
1
5
5
4
4
3
3
C261
C46
C199
C19
J11
R48
R58
R160
R150
R151
R152
R152
C300
R153
R54
R52
R47
R49
R146
R148
R138
R37
C141
R39
C26
L14
R144
R71
R59
R156
Z3
Z4
R26
R23
Q4
D3
R28
J10
R155
Q12
Q5
D101
D100
D16
D10
D6
D5
D13
D19
C18
R80
R81
R25
CN2
CN1
IC10
volt
meter
meter
+6V dc
(off charge)
(off charge)
-
+
AF volt
meter
meter
Oscilloscope
SP
+
-
(80hm)
PC
(serial
port)
(serial
port)
Serial port
Adaptor
PQZZ1CD300E*
Adaptor
PQZZ1CD300E*
RF analyzer
(eg CMD60)
(eg CMD60)
(I) (J)
(D) (E) (G)
(O)
(O)
(R)
12
Note:
(D) - (R) is referred to Check Point (Base Unit) (P.26)
KX
-T
CD2
87UAT
/
K
X
-T
CA1
28UAT
32
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