DOWNLOAD Panasonic KX-TCD235RUS / KX-TCD235RUT / KX-TCA121RUS / KX-TCA121RUT Service Manual ↓ Size: 1.81 MB | Pages: 99 in PDF or view online for FREE

Model
KX-TCD235RUS KX-TCD235RUT KX-TCA121RUS KX-TCA121RUT
Pages
99
Size
1.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / TELEPHONE EQUIPMENT
File
kx-tcd235rus-kx-tcd235rut-kx-tca121rus-kx-tca121ru.pdf
Date
PREV: Panasonic KX-TCD225UA / KX-TCA122UA / KX-TCA121UA (serv.man3) Service Manual / Supplement

Panasonic KX-TCD235RUS / KX-TCD235RUT / KX-TCA121RUS / KX-TCA121RUT Service Manual ▷ View online

Items
Check
Point
Procedure
Check or
Replace Parts
(N)
Timing Confirmation
-
Follow steps 1 to 6 of (I).
7.Confirm that the Timing accuracy is < ± 2.0ppm.
IC2, IC4, R137,
R125, C153, L8,
L5, L10, L9,
C140, C141,
DA1, C142,
C143, C144, L3,
L4, R118, R119,
L12, C30, IC11,
R10, R11, C28,
C26, C147,
C151, C157,
R123, C158,
R128, R129,
C159, C160,
R131, R130,
C161, C162,
R132, C164,
C136, R134,
R117, R127,
C156, C154,
C155, R135,
R136
(O)*
RSSI Level
Confirmation
-
Follow steps 1 to 6 of (I).
7.Execute the command "readrssi".
8. Confirm that the returned value is 0×22 ± A (hex).
IC2, IC4, R137,
R125, C153, L8,
L5, L10, L9,
C140, C141,
DA1, C142,
C143, C144, L3,
L4, R118, R119,
L12, C30, IC11,
R10, R11, C28,
C26, C147,
C151, C157,
R123, C158,
R128, R129,
C159, C160,
R131, R130,
C161, C162,
R132, C164,
C136, R134,
R117, R127,
C156, C154,
C155, R135,
R136
(P)
Power RAMP
Confirmation
-
Follow steps 1 to 6 of (I).
7.Confirm that Power RAMP is matching.
IC2, IC4, R137,
R125, C153, L8,
L5, L10, L9,
C140, C141,
DA1, C142,
C143, C144, L3,
L4, R118, R119,
L12, C30, IC11,
R10, R11, C28,
C26, C147,
C151, C157,
R123, C158,
R128, R129,
C159, C160,
R131, R130,
C161, C162,
R132, C164,
C136, R134,
R117, R127,
C156, C154,
C155, R135,
R136
29
KX-TCD235RUS / KX-TCD235R UT / KX-TCA121RUS / KX-TCA121RUT
Items
Check
Point
Procedure
Check or
Replace Parts
(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
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 -21.0dBm ± 2dBm and that the distortion level is <
5% at Receiver (Volume Middle, 150
Ω
Load).
IC4, CN1,SA1,
L6, L7, D3, Q4,
Q5, R23, R25,
R26, R28, R63,
R39, C41, R49,
C46, C47, R42,
R43, R44, R45,
R46, R47, R48,
C108, C109,
C40, C36, Q8,
C24, R60, R62
(R)
SP-Phone
Audio Check
-
 1. 
Press SP-PHONE button.
 2. 
Press MUTE button.
 3. 
Input -30Bm/1kHz to Line interface. (SP-Phone volume Maximum.)
 4. 
Measure the output level and distortion level at base speaker.
 5. 
Confirm that the level is -3dBm ±5dBm and that the distortion level is < 5%.
 6. 
Press MUTE button.
 7. 
Input -45dBm/1kHz to SP-Phone MIC. (TP1-TP2)
 8. 
Measure the output level and distortion level at line interface.
 9. 
Confirm that the level is -0dBm ±5dBm and that the distortion level is < 5%.
IC4, IC7, D311,
R375, C312,
C313, C314,
C315, C316,
C317, C318,
C319, R308,
R311, R312,
R314, C320,
C367, D301,
R301, R302,
R303, R304,
R305, R307,
C301, C302,
C303, C304,
C305, R306
(S)
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.
R2, R3, R4, D6,
C180, C181,
C182, D361,
Q361, Q362,
C361, C362,
R361, R362,
R363, C322,
L13, L14
30
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 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.)
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 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
8.2.1.2. JIG and PC
8.2.2. PC Setting
8.2.2.1. Connections
8.2.2.2. 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.
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”.
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.
31
KX-TCD235RUS / KX-TCD235R UT / KX-TCA121RUS / KX-TCA121RUT
8.3. Adjustment Standard (Base Unit)
When connecting the Simulator Equipments for checking, please refer to below.
LINE_DC
VDD1
L2R
DCP
2
1
DCM
VDD2
VDD3
VDD5
A_1
ANT
A_2
CLK
CN3
YELLOW
SP
CN4
A
BLACK
RED
CHARGE
VDD4
GND
PbF
PQUP11280Z
TP3
TX
TP4
RX
TP5
TP2
TP1
MIC
DCMW
BLUE
L2T
L1T
L1R
PC
Digital
Volt Meter
(A) (B) (C)
(D) (E)
DC POWER
6V
Dummy
Handset
DECT Tester
CMD60
(I) (J) (K) (L) 
(M) (N) (O) (P)
ANT
L1T
L1R
LINE_DC
DCM
DCM
DCP
GND
GND
DCM
CLK
CN4
VDD5
VDD4
VDD3
VDD2
CN3
CHARGE+
CHARGE-
Digital
Volt Meter
Frequency
Counter
(F)
(S)
(R)
TP5
RX
TP1
10uF
TP2
TP3
GND
TP4
TX
BELL
Simulator
LOOP
Simulator
AF
OSC
AF
OSC
AF VOLT
METER
(G) (Q)
(H)
AF VOLT
METER
OSCILLOSCOPE
Digital
Volt Meter
Call - ID
Simulator
DTMF
Tester
OSC
AF VOLT
METER
OSC
600
12   
2W
8
150
AF
OSC
MIC
SP
6.3V47  F
Note:
(A) - (S) is referred to Check Point (Base Unit) (P.26)
KX
-T
CD2
35RUS
/
K
X
-T
C
D235R
UT
/
K
X
-T
C
A121R
US
/
K
X
-T
CA1
21RUT
32
Page of 99
Display

Click on the first or last page to see other KX-TCD235RUS / KX-TCD235RUT / KX-TCA121RUS / KX-TCA121RUT service manuals if exist.

RANDOM: