Panasonic KX-TCD286RUT / KX-TCA128RUT Service Manual ▷ View online
Items
Check
Point
Procedure
Check or
Replace Parts
(L)* Modulation Check and
Adjustment
ANT/PC
serial port
Follow steps 1 to 3 of (K) above.
4.Confirm that the B-field modulation is -350 ~ -400/+320 ~ +370kHz/div using
data type Fig 31.
data type Fig 31.
5.Adjust the B-field modulation if required. (Execute the command “Readmod”
and “wrtmod xx”, where xx is the value.)
and “wrtmod xx”, where xx is the value.)
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(M)
Frequency Offset
Confirmation
ANT
Follow steps 1 to 3 of (K) above.
4.Confirm that the frequency offset is < ± 45kHz.
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(N)
Frequency Drift
Confirmation
ANT
Follow steps 1 to 3 of (K).
4.Confirm that the frequency drift is < ± 30kHz/ms.
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(O)
Sensitivity Receiver
Confirmation
ANT
Follow steps 1 to 3 of (K).
4.Set DECT tester power to -88dBm.
5.Confirm that the BER is < 1000ppm.
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(P)
Timing Confirmation
ANT
Follow steps 1 to 3 of (K).
4.Confirm that the timing accuracy is < ± 2.0ppm.
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(Q)*
RSSI Level
Confirmation
ANT/PC
serial port
Follow steps 1 to 3 of (K).
4.Set DECT tester power to -81dBm.
5.Execute the command “readrssi”.
6.Confirm that the returned value is 1C ± 8 (hex).
7.Set DECT tester power to -63dBm.
8.Execute the command “readrssi”.
9.Confirm that the returned value is 25 ± 8 (hex).
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(R)
Power RAMP
Confirmation
ANT
Follow steps 1 to 3 of (K).
4.Confirm that power RAMP is matching.
IC1, R54, C62,
C123, C60,
C63, C45,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C44, C47,
C46, C49,
C48, C50,
C53, C51,
R59, C54,
C55, CN6
(S)
Audio Check and
Confirmation
CN3
1.
Link to base which is connected to line simulator.
2.
Set line voltage to 48V and line current to 40mA.
3.
Input -45dBm/1KHz to mic and measure line output level.
4.
Confirm that the level is -7.5dBm ± 2.0dBm and that the distortion level is < 5%
at tel line (600
at tel line (600
Ω
Load).
5.
Input -20dBm/1KHz to Line I/F and measure receiving level at REV1 and
REV2.
REV2.
6.
Confirm that the level is -20.5dBm ± 2.0dBm and that the distortion level is <
5% at Receiver. (vol = 2)
5% at Receiver. (vol = 2)
IC1, C37, C68,
C91, R25,
R26, C20,
C12, C87,
R26, C20,
C12, C87,
C109, R85,
C103, C10,
C103, C10,
C17, R86,
R29, R37,
R29, R37,
R38, D4, D5,
C69, C70, C95
37
KX-TCD286RUT / KX-TCA128RUT
Items
Check
Point
Procedure
Check or
Replace Parts
(T) SP phone Audio Check
and Confirmation
CN3
1.
Link to base which is connected to line simulator.
2.
Set line voltage to 48V and line current to 40mA.
3.
Set the handset off-hook using SP-Phone key.
4.
Input -25dBm/1KHz to Line I/F and measure receiving level at SP1 and SP2.
5.
Confirm that the level is -15.5dBm ± 2dBm and that the distortion level is < 5%.
(vol = 3)
(vol = 3)
IC1, C37, C68,
C91, R25,
R26, C20,
C12, C87,
R26, C20,
C12, C87,
C109, R85,
C103, C10,
C103, C10,
C17, R86,
R29, R37,
R29, R37,
R38, L6, L7,
C79, C78
38
KX-TCD286RUT / KX-TCA128RUT
·
Serial JIG
JIG Cable: PQZZ1CD300E*
·
PC which runs in DOS mode.
·
Batch file CD-ROM for setting: PQZZTCD286RU
Note:
*: If you have the JIG Cable for TCD500 series
(PQZZ1CD505E),
(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
9.2. The Setting Method of JIG (Handset)
9.2.1. Preparation
9.2.1.1. 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.
·
DC power: it must be able to output at least 1A current under 2.4V for Handset.
·
Digital multi-meter (DMM): it must be able to measure voltage and current.
·
Oscilloscope
9.2.1.2. JIG and PC
9.2.2. PC Setting
9.2.2.1. Connections
Connect the DC Power or Battery to Battery+ and Battery- (Handset).
Connect the JIG Cable GND (black).
Connect the JIG Cable UTX (yellow) and URX (red).
Connect the JIG Cable GND (black).
Connect the JIG Cable UTX (yellow) and URX (red).
Note:
*: Com port names may vary depending on what your PC calls it.
39
KX-TCD286RUT / KX-TCA128RUT
9.2.2.2. 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”.
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.
40
KX-TCD286RUT / KX-TCA128RUT
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