Panasonic KX-TCD225UA / KX-TCA122UA / KX-TCA121UA Service Manual ▷ View online
Items
Check
Point
Procedure
Check or
Replace Parts
(P)
Power RAMP
Confirmation
-
Follow steps 1 to 6 of (I).
7.Confirm that Power RAMP is matching.
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
(Q)*
Audio Check
-
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 -9.5dBm ± 2dBm and that the distortion level is < 5%
at TEL Line (600
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 ± 2dBm 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
-
1.
Connect Charge Contact 12
Ω
/2W resistor between charge+ and charge-.
2.
Measure and confirm voltage across the resistor is 2.85V ± 0.2V.
R3, R4, R5, D6,
C107, C180,
C181
(S)
TAM Operation
Confirmation
-
1.
TAM Confirmation (Execute the command “sendchar_VPI”)
2.
Confirm the returned Value (Value is “D597RQ”).
IC5, R132,
C195, C196,
C197, R130,
C169, C208,
R133, R134,
C197, R130,
C169, C208,
R133, R134,
C209, C210
53
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
·
EEPROM serial JIG
JIG Cable: PQZZ1CD300E*
·
PC which runs in DOS mode
·
Batch file for setting: PQZZTCD225UA
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
14.2. The Setting Method of JIG (Base Unit)
14.2.1. Preparation
14.2.1.1. 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.
·
Digital multi-meter (DMM): it must be able to measure voltage and current.
·
Oscilloscope
14.2.1.2. JIG and PC
14.2.2. PC Setting
14.2.2.1. Connections
14.2.2.2. 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.
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.
54
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
14.3. Adjustment Standard (Base Unit)
When connecting the Simulator Equipment for checking, please refer to below.
BUZ
CLK
VDD2
VDD3
TP16
TP15
A_1
A_2
ANT
VDD1
J101
TP19
TP20
RED
BLACK
J104
J103
J102
Copper plate
LINE_DC
L2T
L1T
CN1
L2R
L1R
DCP
DCM
PbF
PC
Digital
Volt Meter
(A) (B) (C)
(D) (E)
TX
J102
RX
J103
GND
J104
J104
GND
VDD2
CHARGE-
CHARGE+
TP16
TP15
Digital
Volt Meter
12
Ω
2W
(R)
GND
CLK
Frequency
Counter
(F)
AF
OSC
AF Volt
Meter
Dummy Handset
SP
MIC
OSC
150
Ω
6.3V 47uF
+
-
ANT
GND
DECT Tester
CMD60
(I) (J) (K) (L)
(M) (N) (O) (P)
DCP
GND
DC POWER
6V
BELL
Simulator
Loop
Simulator
AF Volt
Meter
AF
OSC
Call-ID
Simulator
DTMF
Tester
Tester
L1T
L1R
OSC
600
Ω
(H)
(G) (Q)
GND
GND
BUZ
LINE_DC
Digital
Volt Meter
AF
Volt Meter
VDD1
VDD3
Note:
(A) - (R) is referred to Check Point (Base Unit) (P.50)
KX
-T
CD2
25UA
/
KX
-T
C
C
A
122U
A
/
/
KX
-T
CA1
21UA
55
14.4. Check Point (Charger Unit)
Items
Check
Point
Procedure
Check or
Replace Parts
(A)
Charging Check
-
1.
Connect Charge Contact 12
Ω
/2W resistor between charge+ and charge-.
2.
Measure and confirm voltage across the resistor is 2.85V ± 0.2V.
D11, R11, R12
Note:
After the measuring, sock up the solder of TP.
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.56).
14.5. Adjustment Standard (Charger Unit)
When connecting the Simulator Equipment for checking, please refer to below.
14.5.1. Flow Solder Side View
TP3
TP2
TP1
A
D11
WHITE
BLUE
PbF
TP4
PQUP11305Z
DC POWER
6V
GND (TP2)
TP3
GND (TP2)
TP1
(A)
Digital
Volt Meter
12
Ω
/2W
R12
R11
R1
R2
Note:
(A) is referred to Check Point (Charger Unit) (P.56)
56
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
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