Panasonic KX-TCD235RUS / KX-TCD235RUT / KX-TCA121RUS / KX-TCA121RUT Service Manual ▷ View online
Items
Check
Point
Procedure
Check or
Replace Parts
(T)
SP phone Audio Check
and Confirmation
-
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
9.2. Troubleshooting for Speakerphone (Handset)
When the customer’s telephone line corresponds to the following conditions and transmission signal of SP-Phone is interrupted,
performing the next set up to a cordless handset will improve it to some extent.
performing the next set up to a cordless handset will improve it to some extent.
Conditions
1. When customer’s line has less line loss.
ex.) The customer is using optical fiber, ISDN terminal adaptor, or PBX.
In this case, receiving signal is strong and it may affect transmission signal.
2. When the other party is talking from noisy place.
ex.) The other party is using cellular phone. The background noise is very loud.
In this case, the noise from the other party (i.e. surrounding noise) may affect transmission signal.
Setting Method
•
•
•
•
Change the address of EEPROM (0×0144) from 0×00 to 0×01.
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KX-TCD235RUS / KX-TCD235R UT / KX-TCA121RUS / KX-TCA121RUT
•
•
•
•
EEPROM serial JIG
JIG Cable: PQZZ1CD300E*
•
•
•
•
PC which runs in DOS mode.
•
•
•
•
Batch file CD-ROM for PC setting: PQZZTCD235RU
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
9.3. The Setting Method of JIG (Handset)
9.3.1. Preparation
9.3.1.1. Equipment Required
•
•
•
•
DECT tester: Rohde & Schwarz, CMD 60 is recommended.
•
•
•
•
Frequency counter: it must be precise to be able to measure 1Hz (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
9.3.1.2. JIG and PC
9.3.2. PC Setting
9.3.2.1. Connections
9.3.2.2. PC Setting
1. Open a window of MS-DOS mode from the start-up menu.
2. Change a directory.
3. Type “SET_COM=1” from the keyboard (when COM port 1 is used for the connection).
4. Type “doskey”.
Note:
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.
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.
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.
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KX-TCD235RUS / KX-TCD235R UT / KX-TCA121RUS / KX-TCA121RUT
9.4. Adjustment Standard (Handset)
When connecting the Simulator Equipments for checking, please refer to below.
Current
Probe
DC
6V
Oscilloscope
AF
Generator
AF
Volt Meter
DECT tester
CMD60/CTS60
Oscilloscope
A
B
1
DC POWER
BATTLOW
2.00-2.25
Power key
56
Ω
1 F
56
Ω
AF Volt
Meter
OSC
AF
OSC
600
Ω
Loop
Dummy Base
Unit
REV-
REV+
SP+
Power
2.7V
SP-
ANT
GND
Zener
Battery+
Battery-
DC POWER
2.30-2.60V
PC
URX
UTX
GND
GND
BAT
Digital
Volt Meter
GND
GND
VDD1
VDD2
VDD3
Frequency
Counter
CLK
100
Ω
22pF
Simulator
(F)
(S) (T)
(I)
(D) (E) (G) (H)
(A) (B) (C)
(J)
(K) (L) (M) (N)
(O) (P) (Q) (R)
(O) (P) (Q) (R)
(S) (T)
C66
A201
ANT
R59
C54
C55
C45
R54
R55
C46
C47
R62
Q5
Q9
J3
TP22
CHG
CHG
TP23
J2
UTX
URX
J4
C58
C97
C102
C68
C37
C91
R85
C6
C19
R19
R82
C82
SP_TEST1
REV_TEST1
REV_TEST2
SP_TEST2
C60
C59
C123
C64
C61
C65
C44
C62
CLK
C63
D1
R93
C119
R6
R47
R46
R86
R25
R29
C10
C101
C107
C108
C111
C112
F1
J1
C3
R1
R83
R43
C98
L9
L7
L6
C95
C78
C79
VDD3
D7
D6
D9
Q8
D10
C40
R5
L5
L4
R74
C80
R36
C76
C16
C92
R80
C13
C83
C69
C70
C81
C86
C15
R35
R67
R66
C14
R34
C75
C38
C77
R61
R71
R40
R39
R64
D5
D8
D4
R60
JTAG
R97
R63
VDD1
VDD2
POWER
R91
C93
C41
C4
C94
C22
C72
R15
R57
R96
C116
C117
C122
C113
C24
R68
C100
C20
C7
R21 R20
BAT GND
C57
C1
C53
CN6
C51
C50
C48
C49
C67
B
17
26
10
1
C84
R75
PbF
IC1
IC3
IC2
X1
C21
R90
C18
C96
R92
R72
C99
C23
C23
R87
R7
C114
R94
C120
C115
C71
R89
R88
R88
C39
R26
C90
C90
C103
R38
R37
C17
R37
C17
C109
C87
C12
C12
L1
R12
R81
C118
C104
C5
C8
Q4
Q11
Q2
Q3
Q10
Q1
Q7
PQUP11278Z
1
1
1
8
8
4
4
5
5
20
80
61
60
41
21
40
150
Ω
8
Ω
TP20
TP21
6.3V 47uF
Note:
(A) - (T) is referred to Check Point (Handset) (P.34)
KX
-T
CD2
35RUS
/
K
X
-T
C
D235R
UT
/
K
X
-T
C
A121R
US
/
K
X
-T
CA1
21RUT
39
10 THINGS TO DO AFTER REPLACING IC
Cautions:
Since this page is common to each country, it may not apply to some models in your country. The contents below are the
minimum adjustments required for operation.
minimum adjustments required for operation.
10.1. Base Unit
IC
Necessary Adjustment
BBIC
Programs for Voice processing, interface for RF and
EEPROM
EEPROM
1.
Default batch file: Execute the command “default”.
2.
Country version batch file: Execute the command
“TCD230XXrevYY”. (*1)
“TCD230XXrevYY”. (*1)
3.
Clock adjustment: Refer to Check Point (F). (*2)
EEPROM
Adjustment parameter data
(country version batch file, default batch file, etc.)
(country version batch file, default batch file, etc.)
1.
Change the address “0000” of EEPROM to “00”.
2.
Default batch file: Execute the command “default”.
3.
Country version batch file: Execute the command
“TCD230XXrevYY”. (*1)
“TCD230XXrevYY”. (*1)
4.
Clock adjustment: Refer to Check Point (F). (*2)
FLASH 2
Program
No need to adjust.
Note:
(*1) XX: country code, YY: revision number
“XX” and “YY” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.31).
(P.31).
(*2) Refer to Check Point (Base Unit) (P.26)
10.2. Handset
IC
Necessary Adjustment
BBIC
Programs for Voice processing, interface for RF and
EEPROM
EEPROM
1.
Default batch file: Execute the command “default”.
2.
Default batch file (remaining); Execute the command
“TCA121 DEFrevYY”. (*3)
“TCA121 DEFrevYY”. (*3)
(Except for KX-TCA121/122 FX and KX-TCA121/122 RU).
3.
Country version batch file: Execute the command
“TCA121XXrevYY”. (*3)
“TCA121XXrevYY”. (*3)
4.
Clock adjustment: Refer to Check Point (J). (*4)
5.
1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
Point (A), (H) and (I). (*4)
EEPROM
Adjustment parameter data
(country version batch file, default batch file, etc.)
(country version batch file, default batch file, etc.)
1.
Change the address “0015” of EEPROM to “55”.
2.
Default batch file: Execute the command “default”.
3.
Default batch file (remaining): Execute the command
“TCA121DEFrevYY”. (*3)
“TCA121DEFrevYY”. (*3)
(Except for KX-TCA121/122 FX and KX-TCA121/122 RU).
4.
Country version batch file: Execute the command
“TCA121XXrevYY”. (*3)
“TCA121XXrevYY”. (*3)
5.
Clock adjustment: Refer to Check Point (J). (*4)
6.
1.8 V setting and battery low detection: Refer to Check
Point (A), (H) and (I). (*4)
Point (A), (H) and (I). (*4)
Note:
(*3) XX: country code, YY: revision number
“XX” and “YY” vary depending on the country version. You can find them in the batch file, PQZZ- mentioned in JIG and PC
(P.38).
(P.38).
(*4) Refer to Check Point (Handset) (P.34)
40
KX-TCD235RUS / KX-TCD235R UT / KX-TCA121RUS / KX-TCA121RUT
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