Panasonic KX TC1205RUW Temporal User Manual To The 7511cb77 8c45 4c4e 90ea 70ccd6792f7b

User Manual: Panasonic KX-TC1205RUW to the manual

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Page Count: 69

© 2002 Kyushu Matsushita Electric Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-TC1205RUB
KX-TC1205RUW
KX-TC1205RUS
KX-TC1205RUF
Cordless Phone
Black Version
White Version
Silver Version
Blue Version
(for Russia)
Telephone Equipment
ORDER NO. KM40204852C3
1 BATTERY 4
1.1. Recharge 4
1.2. Battery information 4
2 BATTERY REPLACEMENT 5
3 LOCATION OF CONTROLS 6
3.1. Base Unit 6
3.2. Handset 6
4 CONNECTION 7
4.1. Adding Another Phone 9
5 OPERATIONS 10
5.1. Making Calls 10
5.2. Answering Calls 10
5.3. Storing Phone Numbers in Memory 11
5.4. Storing a Phone Number in the DIRECT Button 11
5.5. Dialing a Stored Number 12
5.6. Dialing a Stored Number in the DIRECT Button 12
5.7. FLASH Button 13
6 DISASSEMBLY INSTRUCTIONS 14
7 TROUBLESHOOTING GUIDE 16
7.1. Check Power 17
7.2. Bell Reception 18
7.3. Check Battery Charge 19
7.4. Check Link 20
7.5. Check Handset Transmission 22
7.6. Check Handset Reception 22
8 ADJUSTMENTS (BASE UNIT) 23
8.1. Test Mode Flow Chart (Base Unit) 23
8.2. How to change the channel 24
8.3. Adjustment 24
8.4. Adjustment Standard (Base Unit) 25
9 ADJUSTMENTS (HANDSET) 26
9.1. Test Mode Flow Chart (Handset) 26
9.2. How to change the channel 27
9.3. Adjustment 27
9.4. Adjustment Standard (Handset) 28
10 RF SPECIFICATION 30
10.1. Base Unit 30
10.2. Handset 30
11 HOW TO CHECK THE HANDSET SPEAKER 30
12 FREQUENCY TABLE (MHz) 31
13 EXPLANATION OF CPU DATA COMMUNICATION 32
13.1. STAND-BY -> TALK, TALK -> STAND-BY 32
13.2. Ringing 33
13.3. Changing the Channel 34
13.4. Ports for transmitting and receiving of data 35
13.5. Waveform of DATA used for cordless transmission and
reception 35
14 BLOCK DIAGRAM (BASE UNIT) 36
15 BLOCK DIAGRAM (HANDSET) 37
16 CIRCUIT OPERATION 38
CONTENTS
Page Page
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.1. Outline 38
16.2. Power Supply Circuit 39
16.3. Reset Circuit (Base Unit) 40
16.4. Charge Circuit 41
16.5. Telephone Line Interface 41
16.6. Transmitter/Receiver 42
16.7. Signal Route 44
17 CIRCUIT OPERATION (HANDSET) 45
17.1. Reset Circuit (Handset) 45
17.2. Battery Low / Power Down Detector 46
18 CPU DATA (Base Unit) 47
18.1. IC2 47
19 CPU DATA (Handset) 48
19.1. IC2 48
20 HOW TO REPLACE FLAT PACKAGE IC 49
20.1. Preparation 49
20.2. Procedure 49
20.3. Modification Procedure of Bridge 49
21 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
50
22 CABINET AND ELECTRICAL PARTS LOCATION (HANDET) 51
23 ACCESSORIES AND PACKING MATERIALS 52
24 REPLACEMENT PARTS LIST 53
24.1. Base Unit 53
24.2. Handset 56
24.3. ACCESSORIES AND PACKING MATERIALS 58
25 FOR SCHEMATIC DIAGRAM 59
25.1. Base Unit (SCHEMATIC DIAGRAM (Base Unit)) 59
25.2. Handset (SCHEMATIC DIAGRAM (Handset)) 59
26 SCHEMATIC DIAGRAM (Base Unit) 60
26.1. Base Unit 60
26.2. RF Unit (Base Unit) 61
27 SCHEMATIC DIAGRAM (Handset) 62
27.1. Handset 62
27.2. RF Unit (Handset) 63
28 CIRCUIT BOARD (Base Unit) 65
28.1. Component View 65
28.2. Flow Solder Side View 66
29 CIRCUIT BOARD (Handset) 67
29.1. Component View 67
29.2. Flow Solder Side View 68
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
1 BATTERY
1.1. Recharge
1.2. Battery information
4
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
2 BATTERY REPLACEMENT
5
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
3 LOCATION OF CONTROLS
3.1. Base Unit
3.2. Handset
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
4 CONNECTION
• • USE ONLY WITH Panasonic AC ADAPTOR PQLV16CEZ.
• • The AC adaptor must remain connected at all times.
(It is normal for the adaptor to feel warm during use.)
• • When more than one unit is used, the units may interfere with each other. To prevent or reduce interference, please leave
ample space between the base units.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
8
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
4.1. Adding Another Phone
This unit will not function during a power failue. To connect a standard telephone on the same line, use a telephone T-adaptor.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
5 OPERATIONS
5.1. Making Calls
5.2. Answering Calls
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
5.3. Storing Phone Numbers in Memory
5.4. Storing a Phone Number in the DIRECT Button
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
5.5. Dialing a Stored Number
5.6. Dialing a Stored Number in the DIRECT Button
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
5.7. FLASH Button
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
6 DISASSEMBLY INSTRUCTIONS
Show in Fig. To remove. Remove.
1Lower Cabinet Screws (2.6 × 12)....................... (A) × 4
2Main P.C. Board Screws (2.6 × 6)................ ......... (B) × 1
Screws (2.6 × 6)..........................(C) × 2
Screws (2.6 × 12)........................(D) × 1
Main P.C. Board.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Show in Fig. To remove. Remove.
3Rear Cabinet Battery compartment cover.
4Screws (2.6 × 12)......................(E) × 2
5Main P. C. Board Screw (2.6 × 12)........................(F) × 1
Tape and solder.
Main P. C. Board.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
7 TROUBLESHOOTING GUIDE
Cross Reference:
Check Power (P.17)
Bell Reception (P.18)
Check Battery Charge (P.19)
Check Link (P.20)
Check Handset Transmission (P.22)
Check Handset Reception (P.22)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Cross Reference:
Reset Circuit (Base Unit) (P.40)
Power Supply Circuit (P.39)
Cross Reference:
Charge Circuit (P.41)
Note:
CPU: IC2
Note:
CPU: IC2
7.1. Check Power
*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.65) or CIRCUIT BOARD (Handset) (P.67)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Cross Reference:
Check Link (P.20)
Telephone Line Interface (P.41)
Note:
CPU: IC2
7.2. Bell Reception
Cross Reference:
Check Link (P.20)
*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.65) or CIRCUIT BOARD (Handset) (P.67)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Cross Reference:
Charge Circuit (P.41)
Power Supply Circuit (P.39)
Cross Reference:
Reset Circuit (Handset) (P.45)
Note:
CPU: IC2
Note:
CPU: IC2
7.3. Check Battery Charge
*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.65) or CIRCUIT BOARD (Handset) (P.67)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
**: Refer to Adjustment (P.24) Note:
CPU: IC2
RF IC: IC1
7.4. Check Link
*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.65) or CIRCUIT BOARD (Handset) (P.67)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
**: Refer to Adjustment (P.27). Note:
CPU: IC2
RF IC: IC1
*: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.65) or CIRCUIT BOARD (Handset) (P.67)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
7.5. Check Handset Transmission
Cross Reference:
Signal Route (P.44)
7.6. Check Handset Reception
Cross Reference:
Signal Route (P.44)
*: Each measurement points are shown in CIRCUIT
BOARD (Base Unit) (P.65) or CIRCUIT BOARD (Handset)
(P.67)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Note:
**: Refer to the above table.
8 ADJUSTMENTS (BASE UNIT)
If your unit have below symptoms, adjust or confirm each item using remedy column from the table.
Symptom Remedy*
The base unit dose not respond to a call from handset. Make adjustments in item (A)
The base unit dose not transmit or the transmit frequency is off. Make adjustments in item (B)
The transmit frequency is off. Make confirmation in item (C)
The transmit power outlet is low, and the operating distance between the base unit and the
handset is less than normal. Make confirmation in item (D)
The reception sensitivity of base unit is low with noise. Make confirmation in item (E)
The transmit level is high or low. Make confirmation in item (F)
The reception level is high or low. Make adjustments in item (G)
The unit does not link. Make confirmation in item (H)
*: Refer to Adjustment (P.24).
8.1. Test Mode Flow Chart (Base Unit)
The operation-flow of Test mode and main check items are shown below.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
8.2. How to change the channel
*: Refer to Flow Solder Side View (P.66).
8.3. Adjustment
Adjustment Items Test Mode Adjustment
Point *Procedure Check or
Replace
Parts
(A) RX VCO
Confirmation 3ch Talk - • • Confirm so that the reading of the Digital Voltmeter is 1.5V ± 0.5V. IC1, L10,
C26
(B) TX VCO
Adjustment 3ch Talk T6 • • Adjust T6 so that the reading of the Digital Voltmeter is 2.0V ± 0.1V. IC1, DV1,
T6
(C)TX Frequency
Adjustment 3ch Talk VC1 • • Adjust VC1 so that the reading of the frequency counter is 30.175MHz ±
0.1KHz. IC1, X1,
T6,
DV1, C35,
C40, VC1
(D) TX Power
Adjustment 3ch Talk T5 • • Adjust T5 so that the reading of the RF VTVM is over 10dBm. IC1, Q3,
Q4, Q5,
T5, DPX1
(E)RX Sensitivity
Adjustment (2nd
IF output)
3ch Talk T2 1. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev.
0KHz).
2. Adjust T2 so that the reading of RF VTVM is the maximum value (more
than 20mV)
DPX1, T2,
CF1, CF2
(F)Line Output Level
Confirmation 3ch Talk - 1. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev.
3KHz).
2. Confirm that the reading of AF VTVM is 80mV ± 20mV (600Ωload).
IC1, Q11
(G)Line Input
Modulation
Confirmation
3ch Talk - 1. Input via loop simulator 1.0KHz, 80mV (measured at T-R) signal.
2. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev.
0KHz).
3. Confirm so that the reading of FM Deviation Meter is 2.8KHz ± 0.3KHz.
IC1, DV1
(H)Noise Squelch
Confirmation 3ch Talk - 1. Measure the SSG output level when the noise squelch changes from Low
to High.
2. Confirm so that the SSG output level is -105dBm ~ -110dBm.
IC1, DPX1
* : The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.25).
SSG Frequency: 39.875 MHz
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
8.4. Adjustment Standard (Base Unit)
Oscilloscope (H)
RF Volt
Meter
T.P ( CH change at test mode)
DC12V or
AC adaptor
DC Volt Meter
Confirmation of VCO voltage
TX-VCORX-VCO
(A), (B)
Loop
SIMULATOR
AF OSC
AF Volt Meter (F)
TXPOWER TXGND
SSG
Audio
Analyzer
RF
Volt Meter
Frequency
Counter
(D)
(C)
(G)
FM Deviation
Meter
(E)
50Ω
IC3
IC6
IC2
IC1
Note: (A) - (H) is refered to ADJUSTMENTS (BASE UNIT) (P.23)
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
25
9 ADJUSTMENTS (HANDSET)
If your unit have below symptoms, adjust or confirm each item using remedy column from the table.
Symptom Remedy*
The movement of Battery Low Indicator is wrong. Make confirmation in item (A)
The base unit does not respond to a call from the handset. Make adjustments in item (B)
The base unit does not transmit or the transmit frequency is off. Make adjustments in item (C)
The transmit frequency is off. Make confirmation in item (D)
The transmit power outlet is low, and the operating distance between the base unit and the
handset is less than normal. Make confirmation in item (E)
The reception sensitivity of base unit is low with noise. Make confirmation item (F)
Does not link between the base unit and the handset. Make confirmation in item (G)
The reception level is high or low. Make confirmation item (H)
The transmit level is high or low. Make adjustments in item (I)
*: Refer to Adjustment (P.27).
Unit condition:
1. Remove the antenna lead wire from P.C Board of the handset.
2. Power Supply: DC 3.9V (DC power supply)
3. Volume: HIGH (When P.C. Board of handset is in test mode, volume condition is medium. Press “LOCATOR” key once.)
4. Speaker Load: 150Ω
CH TX Frequency RX Frequency
CH3 39.875MHz 30.175MHz
9.1. Test Mode Flow Chart (Handset)
Note:
Refet to CIRCUIT BOARD (Handset) (P.67)
Signal Route (P.44)
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
9.2. How to change the channel
9.3. Adjustment
Adjustment Items Test Mode Adjustment
Point Procedure Check or
Replace
Parts
(A)Battery Low
Confirmation 3ch Talk - 1. Set the power supply voltage to DC3.60V, and confirm so that the reading
of oscillosope is High.
2. Set the power supply voltage to DC 3.40V, and confirm so that the
reading of oscilloscope is Low.
IC1
(B) TX VCO
Voltage 3ch Talk T6 1. Adjust T6 so that the reading of the Digital Voltmeter is 1.0V ± 0.1V. IC1, X1,
T6
(C) RX VCO
Confirmation 3ch Talk - • • Confirm RX VCO voltage so that the reading of the Digital Voltmeter is
2.9V ± 0.5V. IC1, X1,
T6
L6, C24
(D)TX Frequency
Adjustment 3ch Talk VC1 • • Adjust VC1 so that the reading of the frequency counter is 39.875MHz ±
0.1KHz. IC1, VC1
DPX1, T5
(E) TX Power
Adjustment 3ch Talk T5 • • Adjust T5 so that the reading of the RF VTVM (50Ωload) is 5dBm ±
1dBm. DPX1, Q5,
T5
(F)RX Sensitivity
Adjustment
(2nd IF output)
3ch Talk T3 1. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev.
0KHz).
2. Adjust T3 so that the reading of RF VTVM is more than 15mV.
DPX1,
T3,IC1,
CF1, CF2
(G)Noise Squelch
Confirmation 3ch Talk - 1. Measure the SSG output level when the noise squelch changes from Low
to High. (modulation frequency 1KHz, dev.3kHz)
2. Confirm so that the SSG output level is -105dBm.
IC1, DPX1
(H)Speaker
Output Level
confirmation
3ch Talk - 1. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev.
3KHz).
2. Confirm so that SP output level is 120mV ± 30mV.
(distortion: less than 7%) (volume High).
IC1
(I)Mic Modulation
Factor
Confirmation
3ch Talk - 1. Apply a MIC signal (1KHz, 2.4mV at 600Ωload).
2. Confirm so that the reading FM Deviation Meter is 3.1KHz ± 0.4KHz.
IC1, DV1
(J)Data
Modulation
Confirmation
3ch Talk - • • Confirm so that the reading of the FM Deviation Meter is 5kHz ± 1kHz.
The connections of adjustment equipment are as shown in Adjustment Standard (Handset) (P.28).
SSG Frequency: 30.175 MHz
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
9.4. Adjustment Standard (Handset)
(Component View)
150ΩAF Volt Meter (H)
Oscilloscope
(G) Noise Squelch
(A) Battery Low
47µF
AF-
Generator
+
-
IC2
Note: (A)-(I) is refered to ADJUSTMENTS (HANDSET) (P.26)
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
28
(Flow Solder Side View)
TXPOWERTXGND
50Ω
FM Deviation
Meter
Audio
Analyzer
Frequency
Counter
RF Millivolt
Meter
(I), (J)
(D)
(E)
SSG
43.820MHz
DC Volt Meter(B)
TX VCO
RF
Volt Meter
(F)
DC Power
Supply
DC Volt Meter(C)
RX VCO
IC1
Note: (A)-(I) is refered to ADJUSTMENTS (HANDSET) (P.26)
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
29
10 RF SPECIFICATION
10.1. Base Unit
Item Value Refer to -.* Remarks
TX Frequency 30.175 MHz ± 0.1kHz ADJUSTMENTS (BASE UNIT) (C) at CH3
TX Power 8mW (3CH) ADJUSTMENTS (BASE UNIT) (D) at CH3
Line Modulation factor 2.8 kHz~3.4 kHz ADJUSTMENTS (BASE UNIT) (G)
Line Modulation factor (Max.) 4.5 kHz~8.5 kHz —
Data Modulation factor 3 kHz~7 kHz —
Line Output level 80mV ± 20mV —
*: Refer to Adjustment (P.24).
10.2. Handset
Item Value Refer to -.** Remarks
TX Frequency 39.875 MHz ± 0.1kHz ADJUSTMENTS (HANDSET) (D) at CH3
TX Power 4mW (3CH) ADJUSTMENTS (HANDSET) (E) at CH3 (Antenna
soldering point 50Ω
Load)
Data Modulation factor 4.0 kHz/dev~8.0 kHz/dev ADJUSTMENTS (HANDSET) (J) at CH3
MIC Modulation factor 1.5 kHz/dev~0.3 kHz/dev ADJUSTMENTS (HANDSET) (I) at CH3 (MIC terminal
2.4mV Input)
SP Output level 120mV ± 30mV —
**: Refer to Adjustment (P.27).
11 HOW TO CHECK THE HANDSET SPEAKER
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
12 FREQUENCY TABLE (MHz)
BASE UNIT PORTABLE UNIT
Channel Transmit Frequency Receive Frequency Transmit Frequency Receive Frequency
130.0750 39.7750 39.7750 30.0750
230.1250 39.8250 39.8250 30.1250
330.1750 39.8750 39.8750 30.1750
430.2250 39.9250 39.9250 30.2250
530.2750 39.9750 39.9750 30.2750
630.1000 39.8000 39.8000 30.1000
730.1500 39.8500 39.8500 30.1500
830.2000 39.9000 39.9000 30.2000
930.2500 39.9500 39.9500 30.2500
10 30.3000 40.0000 40.0000 30.3000
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
13 EXPLANATION OF CPU DATA COMMUNICATION
13.1. STAND-BY -> TALK, TALK -> STAND-BY
*: The channel is changed if the noise interferes with the conversation.
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
13.2. Ringing
33
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
13.3. Changing the Channel
34
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Handset:
transmitting (TX) ... 36 Pin
receiving (RX) ... 4 Pin
13.5.2. Base Unit
• • For example (one of part of data)
Base Unit:
transmitting (TX) ... 17 Pin
receiving (RX) ... 10 Pin
13.4. Ports for transmitting and receiving of data
13.5. Waveform of DATA used for cordless transmission and reception
The DATA which is transmitted from the Handset to the Base Unit is combination of DATA 0, DATA 1, PSEUD.
The DATA which is transmitted from the Base Unit to the Handset is combination of DATA 0, DATA 1, PSEUD.
13.5.1. Handset
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
14 BLOCK DIAGRAM (BASE UNIT)
RX VCO
L10, C26
DUPLEXER
DPX1
MIX 1/2
RF AMP
Q1, T2
RX LOOP
X1
VC1
X2
DC 12V
TX LOOP
DC 5V
RF IC
IC1
TELEPHONE LINE
INTERFACE
CPU
IC2
RF
-DATA
-CLK
-STB
VTX RF
-DATA
-CLK
-STB
RX
DATA
TX
DATA
POWER
CONTROL
Q2
5V
REGULATOR
Q18, Q19
RF AMP
Q3,Q4, T5
TX VCO
Q5, T6, DV1
PLL OSC
RF FILTER
CF1, CF2
10.7MHz 455kHz
ANTENNA
LED
Q21, LED1
RESET
DTC
Q9
CHARGE
DTC
Q7
EXP
17
14
TEL
LINE
AMP
Q11, IC3
TEL LINE
POWER SUPPLY
RESET CHARGE
CHARGE
TERMINAL
CHARGE
CONTROL
Q14, Q17
AC DOWN
DTC
Q8
DC IN
12V 150mA
(AC Adaptor)
COM
DC 5V
CONTROL LINE
AUDIO SIGNAL
·• TEL LINE
SW
RY1
·• LINE
SEIZURE
Q10
DIODE
BRIDGE
D2, D3,
D4, D5
H/S
KX-TC1205RUB/W/S/F BLOCK DIAGRAM (BASE UNIT)
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
36
15 BLOCK DIAGRAM (HANDSET)
RX VCO
L6, C24
DUPLEXER
DPX1
MIX 1/2
RF AMP
Q1, T3
X1
X3
TX LOOP
DC 3.9V
RF IC
IC1
CPU
IC2
RF
-DATA
-CLK
-STB
VTX RF
-DATA
-CLK
-STB
RX
DATA
TX
DATA
POWER
CONTROL
Q4
RF AMP
Q5, T5
TX VCO
Q6, T6, DV1
PLL OSC
RF FILTER
CF1, CF2
ANTENNA
LED
Q8, LED 1-4
RESET
Q11
DIODE
BRIDGE
D1
CHARGE
DTC
IC2 PING37
BUZZER
Q7, BZ1
KEY BOARD
EXP SPEAKER
REC1
MIC
MC1
CHARGE
TERMINAL
DIODE
BRIDGE
Q9
COM
DC 3.9V
CONTROL LINE
AUDIO SIGNAL
Base
RX LOOP
VC1
BATTERY
3.9V
KX-TC1205RUB/W/S/F BLOCK DIAGRAM (HANDSET)
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
37
16 CIRCUIT OPERATION
16.1. Outline
Base unit consists of the following ICs as shown in BLOCK DIAGRAM.
• • CPU:IC2
− − Controlling the whole system
− − Forming/analyzing all data signals (ACK, CMD signal etc.*)
− − All interfaces (ex: LED, KEY, SP, Mic, LCD, Detector Circuit (Charge/ Power Down)
*Refer to EXPLANATION OF CPU DATA COMMUNICATION (P.32).
• • RF IC:IC1
− − PLL Oscillator
− − Detection
− − Compress/ Expander
− − first/ second mixer
− − Amplifier for transmission and reception
• • Additionally,
− − Power Supply Circuit
− − Reset Circuit
− − Charge Circuit
− − Telephone Line Interface Circuit
Handset consist of the following ICs as shown in BLOCK DIAGRAM.
• • CPU: IC2
− − All data signals (forming/analyzing ACK or CMD signal*)
− − All interfaces (ex; LED, Key, Buzzer, Detector Circuit, Charge, Battery Low)
− − RAM for keeping the data (CH Number, ID Code, etc.)
• • RF IC:IC1
− − PLL Oscillator
− − Detector
− − Compress/Expander
− − first, second mixer
− − Amplifier for transmission and reception
*Refer to EXPLANATION OF CPU DATA COMMUNICATION (P.32).
38
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.2. Power Supply Circuit
The power supply to the CPU (Digital, Analog) and RF IC from AC Adaptor (+12V) is shown in the diagram below.
The base unit power supply is DC12V. The handset´s power is supplied from 3.6V battery (Nickel-Cadmium battery) which is
installed in the handset.
Power supply for transmitter is turned on by a press of "Talk" key on the handset. During the stand-by mode, the unit stops
transmitting but receive thhe signal.
Also during on-hook condition (the handset is placed on the base unit), backup power for memory of the last dialed number is
supplied through the battery (3.6V nickel-cadmium in the handset). The memory of this unit is not backed up by the curreent
from the telephone line.
The base unit DC power supply is regulated by Q18, the CPU power is regulated by Q19. The Q8, detects AC Adaptor
powerfailure and maintains the unit cecutiry cord;
Fig. 1
39
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.3. Reset Circuit (Base Unit)
After power supply from AC adaptor, the VREG is input for making reset signal. Refer to the below waveform.
Fig. 2
Fig. 3
40
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.4. Charge Circuit
Circuit Operation:
When charging the handset on the base unit, the charge current is as follows;
DC (JK2) →L8 →D6 →L7 →CHG+(Base) →[CHG+(Handset) →L4 →Q9 →BATT(1)....Battery....BATT(2) →L5 →
CHG-(Handset)] →CHG+(Base) →L5,
In this way, the CPU on both unit detects the fact that the battery is charged.
The charge current is controlled by switching Q701 of Handset. The battery is charged in normal mode for 10 hours and then
in trickle mode.
16.5. Telephone Line Interface
Function:
• • Bell signal detection
• • ON/OFF hook and pulse dial circuit
• • Side tone circuit
Bell signal detection and OFF HOOK circuit:
In the idle mode, Q103 is open to cut the DC loop current and decrease the ring load. When ring voltage appears at the Tip (T)
and Ring (R) leads (when the telephone rings), the AC ring volltage is transferred as follows.
JK1 (3): T →L6 →R144 →IC3D (12,13 →14) →C97 →R148 →Q20 →IC2 (24) [BELL]
JK1 (2): R →L4 →R120 →R152 →↑
When the CPU (DSP) detects a ring signal and press the TALK Key on the handset. Q6 turns on and then RY1 turns on, thus
providing an off-hook condition (active DC current flow through the circuit) and the following singal flow is for the loop current.
T→R160 →L4 →RY1 →R107 →T7 →R116 →D5 →L6 →R161 →R[OFF HOOK]
ON HOOK Circuit:
Q6 is open, RY1 disconnected as to cut the DC loop current and to cut the voice signal. The unit is consequently in an on-hook
condition.
Pulse Dial Circuit:
DSP (Relay) turns RY1 ON/OFF to make the pulse dialing via Q6.
Make/Break ratio when dialing with the Handset: 40%:60%
Side Tone Circuit:
Basically this circuit prevents the TX signal from feeding back to RX signal.
As for this unit, TX signal feed back from Q11 is canceled by the cancellor circuit of AGC.
41
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.6. Transmitter/Receiver
Base Unit and Handset are mainly consists of RF(Radio Frequency) IC and CPU.
Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency.
Signal Pass :
*Refer to CDL TX/RX in Signal Route (P.44).
16.6.1. Base to Handset
Circuit Operation:
The voice signal input from the TEL LINE interface goes to RF IC as shown in
BLOCK DIAGRAM (BASE UNIT) (P.36).
In the talk mode (off-hook) condition, the telephone line voice signal passes through D2, D3, D4, D5, RY1 (Relay), R107 and
T7.
The other party´s voice signal is coupled with T7 and amplified by Q11 and led to IC3-B (OP Amplifier device).
And the signal goes through the compressor of RF IC, it is output to transmitter circuit.
The signal of the data sent to the handset is applied in the anode of the variable capacitor diode (VARICAP : DV1).
The capacitor of VARICAP is changing in accordance with the voice signal from telephone line interface or TX DATA signal from
CPU.
Therefore, the carrier frequency which is generated by TXVCO will be changing, and Frequency modulated RF signal is
generated and amplified by RF AMP(Q3, Q4, T5).
It pass through the Duplexer DPX1 and radiated from Antenna.
The signal is transmitted from the base unit and received by the handset antenna and amplified by RF amplifier (Q1) through
DPX1 as shown in BLOCK DIAGRAM (HANDSET) (P.37). And then it is converted to 10.7 MHz and 450 KHz Intermediate
frequency by RF IC and related components.
The demodulated audio signal is output from RF IC (DET OUT) and passed through "Expander" process to reduce noise, then
voice signal amplified by "Receiver amplifier" is output to receiver (REC1).
The receiver loudness is adjustable using "LOUD" key on the handset. Q2 and Q3 control the volume. When CPU (VOL1)
becomes low, the volume becomes “MID”, while CPU (VOL 1,2) becomes low, the volume becomes "HIGH".
TX data (to Handset)
CPU (VTX) becomes low to turn on the transmission power transistor Q2, and CPU (TX-data) sends data signal. It is FM-
modulated by TXVCO and driven by RF AMP, then transmitted to the handset.
42
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.6.2. Handset to Base
Circuit Operation:
The voice signal from the handset user is picked up by the microphone (MC1), voice signal passes through "Compressor"
process to reduce noise as shown in BLOCK DIAGRAM (HANDSET) (P.37). And the voice is FM-modulated by VARICAP
(DV1).
The carrier frequency is generated by TX VCO. The transmitter power transistor Q4 is turned on/off by CPU (VTX).
The carrier signal is amplified by RF AMP and sent to the handset duplexer and antenna.
The signal of 49MHz band (49.670~49.99MHz) which is input from ANT is filtered at DPX1 as shown in
BLOCK DIAGRAM (BASE UNIT) (P.36), then it is input to RF IC.
The signal input to RF IC is converted through Mixer inside of RF IC, RF filter (CF1, CF2) and Expander.
The signal is transmitted from the handset and received by the base unit antenna and amplified by RF amplifier Q1, then it is
converted to10.7 MHz and 450 KHz Intermediate by RF IC. The demodulated audio signal is output from RF IC (DET OUT) and
passed through "Expander" process to reduce noise, then voice signal is led to LINE AMP.
The signal is passed through TELEPHONE INTERFACE and Tel-line.
RX data (from Handset):
The data signal from handset (ex: Talk, ACK, COM) is also included in 49 MHz band same as the voice data. After second if
filter, the data signal is made square shape by data limiting AMP of the RF IC. RX data is output to CPU (RX Data).
16.6.3. RF signal operation/control and PLL operation (RF UNIT)
Base unit radio frequency signal received by antenna passes through duplexer (DPX1). RF signal is amplified by RF AMP.
RF signal received from RF IC is mixed with RX local frequency at Mixer to generate 10.7 MHz wide band IF. The reference
frequency is generated by X1 11.15 MHz crystal.
VC1 is the reference frequency for adjustment. The 10.7 MHz is mixed with reference and 450KHz narrow band IF is generated.
The demodulation audio signal is adjusted to the maximum at T1.
RF IC is controlled by CPU (RF_STB, DATA, CLK). The RX local frequency is generated by RXVCO.
43
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
16.7. Signal Route
Each signal route is as follows.
44
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
17 CIRCUIT OPERATION (HANDSET)
17.1. Reset Circuit (Handset)
The power of handset is supplied by battery.
Whenever the battery is recharged or inserted, the impulse at CHG+ becomes Reset signal through Q11, and sent to CPU.
Fig. 4
Fig. 5
45
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
17.2. Battery Low / Power Down Detector
Circuit Operation:
“Battery Low” and “Power Down” are detected by RF IC which check the voltage from battery. Shortly, every detected blocks
are inside of RF IC. The detected voltage is as follows;
• • Battery Low
Battery voltage : V(Batt) < 3.57V
The CPU detects this level and “Recharge battery” LED starts flashing.
• • Power Down
Battery voltage : V(Batt) < 3.3V
The output of RF IC (P-DOWN) becomes low level, then CPU stops working to keep the data (CH number, ID Code, etc.)
Fig. 6
46
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
18.1. IC2
18 CPU DATA (Base Unit)
47
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
19.1. IC2
19 CPU DATA (Handset)
48
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
20 HOW TO REPLACE FLAT
PACKAGE IC
20.1. Preparation
• • SOLDER
Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR-
19RMA
• • Soldering iron
Recommended power consumption will be between 30 W
to 40 W.
Temperature of Copper Rod 662 ± 50°F (350 ± 10°C)
(An expert may handle between 60 W to 80 W iron, but
beginner might damage foil by overheating.)
• • Flux
HI115 Specific gravity 0.863.
(Original flux will be replaced daily.)
20.2. Procedure
1. Temporary fix FLAT PACKAGE IC by soldering on two
marked 2 pins.
*Most important matter is accurate setting
of IC to the corresponding soldering foil.
2. Apply flux for all pins of FLAT PACKAGE IC.
3. Solder employing specified solder to direction of arrow, as
sliding the soldering iron.
20.3. Modification Procedure of
Bridge
1. Re-solder slightly on bridged portion.
2. Remove remained solder along pins employing soldering
iron as shown in below figure.
49
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
21 CABINET AND ELECTRICAL PARTS LOCATION (BASE
UNIT)
50
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
22 CABINET AND ELECTRICAL PARTS LOCATION
(HANDET)
51
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
23 ACCESSORIES AND PACKING MATERIALS
52
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
24 REPLACEMENT PARTS
LIST
Note:
1. RTL (Retention Time Limited)
The marking (RTL) indicates that the Retention Time is
limited for this item.
After the discontinuation of this assembly in production, the
item will continue to be available for a specific period of
time. The retention period of availability depends on the
type of assembly and the laws governing parts and product
retention.
At the end of this period, the assembly will no longer be
available.
2. Important safety notice
Components identified by the mark indicates special
characteristics important for safety. When replacing any of
these components, only use specified manufacture´s parts.
3. The S mark means the part is one of some identical parts.
For that reason, it may be different from the installed part.
4. RESISTORS & CAPACITORS
Unless otherwise specified;
All resistors are in ohms (Ω) K=1000Ω, M=1000kΩ
All capacitors are in MICRO FARADS (µF) P=µµF
*Type & Wattage of Resistor
24.1. Base Unit
24.1.1. CABINET AND ELECTRICAL
PARTS
Ref.
No. Part No. Part Name & Description Remarks
1PQJT10180Z CHARGE TERMINAL
2PQHR10882Z LED LENS
3PQGT15032Z NAME LABEL (for KX-TC1205RUB)
3PQGT14900Z NAME LABEL (for KX-TC1205RUW)
3PQGT14901Z NAME LABEL (for KX-TC1205RUS)
3PQGT14902Z NAME LABEL (for KX-TC1205RUF)
4PQQT22474Z CHARGE LABEL
5PQBC10349Z1 PUSH BUTTON (for KX-
TC1205RUB) S
Ref.
No. Part No. Part Name & Description Remarks
5PQBC10349Z3 PUSH BUTTON (for KX-
TC1205RUW) S
5PQBC10349Z2 PUSH BUTTON (for KX-
TC1205RUS/KX-TC1205RUF) S
6PQKE10335Z1 HOOK LEVER (for KX-TC1205RUB) S
6PQKE10335Z5 HOOK LEVER (for KX-TC1205RUW) S
6PQKE10335Z4 HOOK LEVER (for KX-TC1205RUS) S
6PQKE10335Z2 HOOK LEVER (for KX-TC1205RUF) S
7PQKF10534Y1 LOWER CABINET (for KX-
TC1205RUB/KX-TC1205RUF) S
7PQKF10534Y3 LOWER CABINET (for KX-
TC1205RUW) S
7PQKF10534Y2 LOWER CABINET (for KX-
TC1205RUS) S
8PQKM10509W1 UPPER CABINET (for KX-
TC1205RUB) S
8PQKM10509W4 UPPER CABINET (for KX-
TC1205RUW) S
8PQKM10509W3 UPPER CABINET (for KX-
TC1205RUS) S
8PQKM10509W2 UPPER CABINET (for KX-
TC1205RUF) S
9PQSA10104Y ANTENNA
10 XXLABALACE1 HOOK LABEL (for KX-TC1205RUB)
10 XXLASILUER1 HOOK LABEL (for KX-
TC1205RUW/KX-TC1205RUS/KX-
TC1205RUF)
24.1.2. MAIN P.C.BOARD PARTS
Ref.
No. Part No. Part Name & Description Remarks
PCB1 PQWPC1205RUH MAIN P.C.BOARD ASS´Y (RTL)
(ICS)
IC1 SA133122409 IC
IC2 SA138740577 IC
IC3 SA110032403 IC
IC4 AN6183S IC
(TRANSISTORS)
Q1 BB230024104 TRANSISTOR(SI)
Q2 SB010390608 TRANSISTOR(SI)
Q3 SB110390405 TRANSISTOR(SI)
Q4 SB110390405 TRANSISTOR(SI)
Q5 SB110390405 TRANSISTOR(SI)
Q6 SB110390405 TRANSISTOR(SI)
Q7 SB110390405 TRANSISTOR(SI)
Q8 SB110390405 TRANSISTOR(SI)
Q9 SB110390405 TRANSISTOR(SI)
Q10 BB010009408 TRANSISTOR(SI)
Q11 SB110390405 TRANSISTOR(SI)
Q14 SB010390608 TRANSISTOR(SI)
Q16 SB110390405 TRANSISTOR(SI)
Q17 SB110390405 TRANSISTOR(SI)
Q18 BB1G0390403 TRANSISTOR(SI)
Q19 BB1G0390403 TRANSISTOR(SI)
Q20 SB110390405 TRANSISTOR(SI)
Q21 SB110390405 TRANSISTOR(SI)
(DIODES)
D1 SC15L414808 DIODE(SI)
D2 BC2G0400400 DIODE(SI)
D3 BC2G0400400 DIODE(SI)
D4 BC2G0400400 DIODE(SI)
D5 BC2G0400400 DIODE(SI)
D6 BC2G0400400 DIODE(SI)
D9 SC15L414808 DIODE(SI)
D10 SC15L414808 DIODE(SI)
DV1 BC6K0025101 DIODE(SI)
ZD1 BC050474801 DIODE(SI)
ZD2 BC050474801 DIODE(SI)
ZD3 SC4555C4V71 DIODE(SI)
ZD5 SC4555C4V71 DIODE(SI)
ZD6 BC2G0400400 DIODE(SI)
ZD7 BC4579C2702 DIODE(SI)
ZD8 BC4579C5V65 DIODE(SI)
ZD10 SC4555C1506 DIODE(SI)
53
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Ref.
No. Part No. Part Name & Description Remarks
ZD11 SV110201203 DIODE(SI)
ZNR1 VA107D271K1 DIODE(SI)
(COILS)
L1 PQLQZK2R2J COIL
L4 PQLQZK120J COIL
L5 PQLQZK120J COIL
L6 PQLQZK120J COIL
L7 PQLQZK120J COIL
L10 PQLQZK120J COIL
L12 SH4Y0750K46 COIL
(CONNRCTORS)
JK1 DC72P120018 JACK/SOCKET
JK2 DC71P120023 JACK/SOCKET
(CERAMIC FILTERS)
CF1 BDFL107MA53 CERAMIC FILTER
CF2 BDFL0455E02 CERAMIC FILTER
DPX1 BDFL0083004 CERAMIC FILTER
(CRYSTAL OSCILLATORS)
X1 BD1R1024504 CRYSTAL OSCILLATOR
X2 BDRR0800005 CRYSTAL OSCILLATOR
(TRANSFORMERS)
T1 CLIP1200053 TRANSFORMER
T2 CLIP1200100 TRANSFORMER
T5 CLIP1200096 TRANSFORMER
T6 CLIP1200142 TRANSFORMER
T7 DG0P1200035 TRANSFORMER
(OTHERS)
D7 PQVDDSP272M VARISTOR
IC5 PQVIPC817K PHOTO ELECTRIC TRANSDUCER
LED1 SC5E0192115 LED
RY1 DCR000105H7 RELAY
SW1 DETP1200017 PUSH SWITCH
VC1 CR00020RRT5 TRIMMER CAPACITOR
(RESISTORS)
R1 ERJ3GEYJ470 47
R2 ERJ3GEYJ330 33
R3 ERJ3GEYJ153 15k
R4 ERJ3GEYJ822 8.2k
R5 ERJ3GEYJ103 10k
R6 ERJ3GEYJ103 10k
R7 ERJ3GEYJ334 330k
R8 ERJ3GEYJ103 10k
R10 ERJ3GEYJ393 39k
R11 ERJ3GEYJ102 1k
R12 ERJ3GEYJ101 100
R13 ERJ3GEYJ623 62k
R14 ERJ3GEYJ103 10k
R15 ERJ3GEYJ562 5.6k
R16 ERJ3GEYJ153 15k
R17 ERJ3GEY0R00 0
R18 ERJ3GEYJ472 4.7k
R19 ERJ3GEYJ124 120k
R20 ERJ3GEYJ475 4.7M
R21 ERJ3GEYJ473 47k
R22 ERJ3GEYJ472 4.7k
R23 ERJ3GEYJ563 56k
R24 ERJ3GEYJ103 10k
R25 ERJ3GEYJ683 68k
R26 ERJ3GEYJ473 47k
R27 PQ4R10XJ560 56 S
R29 ERJ3GEY0R00 0
R30 ERJ3GEYJ104 100k
R31 ERJ3GEYJ473 47k
R32 ERJ3GEYJ105 1M
R33 ERJ3GEY0R00 0
R35 ERJ3GEYJ101 100
R36 ERJ3GEYJ224 220k
R37 ERJ3GEYJ101 100
R38 ERJ3GEYJ823 82k
R40 ERJ3GEYJ223 22k
R41 ERJ3GEYJ473 47k
R42 ERJ3GEYJ103 10k
R43 ERJ3GEYJ393 39k
Ref.
No. Part No. Part Name & Description Remarks
R44 ERJ3GEYJ104 100k
R45 ERJ3GEYJ334 330k
R46 ERJ3GEYJ222 2.2k
R48 ERJ3GEYJ223 22k
R49 ERJ3GEYJ473 47k
R50 ERJ3GEYJ822 8.2k
R51 ERJ3GEYJ182 1.8k
R52 ERJ3GEYJ225 2.2M
R53 ERJ3GEYJ153 15k
R55 ERJ3GEYJ681 680
R56 ERJ3GEYJ222 2.2k
R57 ERJ3GEYJ224 220k
R58 ERJ3GEYJ511 510
R59 ERJ3GEYJ104 100k
R60 ERJ3GEYJ223 22k
R61 ERJ3GEYJ224 220k
R63 ERJ3GEYJ104 100k
R64 ERDS2TJ103 10k
R68 ERJ3GEYJ104 100k
R74 ERJ3GEY0R00 0
R75 ERJ3GEYJ103 10k
R77 ERJ3GEYJ203 20k
R78 ERJ3GEYJ393 39k
R79 ERJ3GEYJ823 82k
R80 ERJ3GEYJ222 2.2k
R81 ERJ3GEYJ164 160k
R82 ERJ3GEYJ103 10k
R83 ERJ3GEYJ103 10k
R84 ERJ3GEYJ103 10k
R85 ERJ3GEYJ103 10k
R86 ERJ3GEYJ473 47k
R87 ERJ3GEYJ102 1k
R88 ERJ3GEYJ103 10k
R89 ERJ3GEYJ103 10k
R90 ERJ3GEYJ304 300k
R91 ERJ3GEYJ154 150k
R92 ERJ3GEYJ103 10k
R93 ERJ3GEYJ104 100k
R95 ERJ3GEYJ392 3.9k
R96 ERJ3GEYJ274 270k
R97 ERJ3GEYJ822 8.2k
R98 ERJ3GEYJ123 12k
R99 ERJ3GEYJ823 82k
R100 ERJ3GEYJ104 100k
R103 ERJ3GEYJ223 22k
R104 ERJ3GEYJ472 4.7k
R105 ERJ3GEYJ472 4.7k
R106 ERDS2TJ220 22
R107 CQ63110RJ21 110
R108 ERJ3GEYJ472 4.7k
R109 ERJ3GEYJ334 330k
R110 ERJ3GEYJ104 100k
R111 ERJ3GEYJ471 470
R112 ERJ3GEYJ102 1k
R113 ERDST1TJ330 33
R114 ERJ3GEYJ223 22k
R115 ERJ3GEYJ563 56k
R116 ERJ3GEY0R00 0
R117 ERJ3GEYJ394 390k
R118 ERDS1TJ150 15
R119 ERJ3GEYJ823 82k
R120 ERJ3GEY0R00 0
R122 ERJ3GEYJ132 1.3k
R123 ERJ3GEYJ153 15k
R126 ERJ3GEYJ621 620
R129 ERJ3GEYJ682 6.8k
R131 ERJ3GEYJ104 100k
R132 ERJ3GEYJ222 2.2k
R133 ERJ3GEYJ820 82
R134 ERJ3GEY0R00 0
R135 ERJ3GEYJ152 1.5k
R139 ERJ3GEYJ106 10M
R141 ERJ3GEYJ512 5.1k
54
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Ref.
No. Part No. Part Name & Description Remarks
R142 ERDS2TJ220 22
R143 ERJ3GEYJ514 510k
R144 ERDS2TJ206 20M
R145 ERJ3GEYJ102 1k
R146 ERJ3GEYJ153 15k
R148 ERJ3GEYJ103 10k
R149 ERJ3GEYJ182 1.8k
R150 ERJ3GEYJ514 510k
R151 ERDST1TJ682 6.8k
R152 ERDS2TJ206 20M
R153 ERJ3GEYJ105 1M
R154 ERJ3GEY0R00 0
R155 ERJ3GEYJ470 47
R156 ERJ3GEYJ470 47
R159 ERJ3GEYJ104 100k
R160 PQ4R10XJ000 0 S
R161 PQ4R10XJ000 0 S
R166 ERJ3GEYJ470 47
R167 ERJ3GEYJ103 10k
R170 ERJ3GEYJ102 1k
R171 ERJ3GEYJ102 1k
R172 ERDS2TJ223 22k
R173 ERDS2TJ102 1k
R174 ERDS2TJ102 1k
R176 ERJ3GEY0R00 0
R180 ERJ3GEYJ563 56k
R181 ERJ3GEYJ330 33
R186 ERJ3GEYJ472 4.7k
R187 ERJ3GEYJ273 27k
R188 ERJ3GEYJ103 10k
R189 ERJ3GEYJ223 22k
R190 ERJ3GEYJ103 10k
R191 ERJ3GEYJ683 68k
R192 ERJ3GEYJ124 120k
R193 ERJ3GEYJ104 100k
R194 ERJ3GEY0R00 0
(CAPACITORS)
C1 ECEA1EK470 47 S
C2 ECUV1H473MDV 0.047 S
C4 ECUV1H103KBV 0.01
C6 ECUV1C104ZFV 0.1
C7 ECUV1H102KBV 0.001
C8 ECUV1C104ZFV 0.1
C9 ECUV1H471JCV 470p
C10 ECUV1H471JCV 470p
C11 ECUV1H473MDV 0.047 S
C12 ECUV1H103KBV 0.01 S
C15 ECEA1HU2R2 2.2
C16 ECUV1H270JCV 27p
C17 ECEA1AKA101 100
C18 ECUV1C473KBV 0.047
C19 ECUV1H102KBV 0.001
C20 ECEA1HKA2R2 2.2
C22 ECUV1H103KBV 0.01 S
C23 ECUV1H103KBV 0.01 S
C24 ECUV1E223ZFV 0.022
C25 ECUV1H822KBV 0.0082
C26 ECUV1H070DCV 7p S
C27 ECUV1H103KBV 0.01
C28 ECUV1C104KBV 0.1
C29 ECUV1C104KBV 0.1
C30 ECEA1HKA2R2 2.2
C31 ECUV1H103KBV 0.01
C32 ECEA1HU2R2 2.2
C33 ECUV1H101JCV 100p
C34 ECUV1H471JCV 470p
C35 ECUV1H180JCV 18p
C36 ECUV1H101JCV 100p
C37 ECUV1H151JCV 150p
C38 ECEA1HKS010 1 S
C39 ECUV1H103KBV 0.01 S
C40 ECUV1H270JCV 27p
C41 ECEA1EK470 47 S
Ref.
No. Part No. Part Name & Description Remarks
C42 ECEA1HU2R2 2.2
C43 ECUV1C104ZFV 0.1
C44 ECUV1A105ZFV 1
C45 ECUV1H682KBV 0.0068
C46 ECUV1H102KBV 0.001
C47 ECUV1H103KBV 0.01 S
C48 ECUV1H223KBV 0.022 S
C49 ECUV1H103KBV 0.01 S
C50 ECEA1HU220 22 S
C51 ECUV1H103KBV 0.01 S
C52 ECUV1H223KBV 0.022 S
C53 ECUV1H120JCV 12p
C54 ECUV1H020CCV 2p
C55 ECUV1H103KBV 0.01 S
C56 ECUV1H180JCV 18p
C57 ECUV1H390JCV 39p
C58 ECUV1H682KBV 0.0068
C59 ECUV1H390JCV 39p
C60 ECUV1H180JCV 18p
C61 ECUV1C104ZFV 0.1
C62 ECUV1H390JCV 39p
C63 ECUV1H103KBV 0.01 S
C64 ECUV1C104ZFV 0.1
C65 ECUV1H220JCV 22p
C66 ECEA1AU101 100
C67 ECUV1H220JCV 22p
C68 ECEA1HKAR47 0.47
C69 ECUV1H271JCV 270p
C70 ECUV1H223KBV 0.022 S
C71 ECUV1C104ZFV 0.1
C72 ECUV1H223KBV 0.022 S
C73 ECUV1C104ZFV 0.1
C74 ECUV1C104ZFV 0.1
C75 ECUV1H223KBV 0.022 S
C76 CATZ681KC68 680p
C77 ECUV1H151JCV 150p
C78 ECEA1AU471 470
C79 ECUV1C104ZFV 0.1
C80 CATZ681KC68 680p
C81 CJB21004K00 1
C82 ECUV1C104ZFV 0.1
C85 ECUV1C683KBV 0.068
C86 ECUV1H103KBV 0.01 S
C88 ECUV1A105ZFV 1
C90 ECUV1C224KBV 0.22
C92 ECUV1C104KBV 0.1
C93 ECUV1H562KBV 0.0056
C94 ECEA1CK101 100 S
C95 CB114714205 470
C96 ECUV1H103KBV 0.01 S
C97 ECEA1HKA4R7 4.7
C98 ECEA1EU221 220
C99 ECUV1H103KBV 0.01 S
C100 CJB21004K00 1
C101 ECUV1H562KBV 0.0056
C102 ECEA1EU221 220
C103 ECEA1AU470 47
C104 ECUV1H390JCV 39p
C104 ECFD1C104KD 104
C105 ECEA1CKA100 10
C106 ECUV1A105ZFV 1
C107 ECUV1C104ZFV 0.1
C108 ECUV1C104KBV 0.1
C109 ECUV1H682KBV 0.0068
C110 ECUV1H470JCV 47p
C111 ECUV1H103KBV 0.01 S
C121 ECUV1H103KBV 0.01 S
C123 ECUV1C474ZFV 0.47
C124 ECUV1C224KBV 0.22
C125 ECUV1H100DCV 10p S
C126 ECUV1C224KBV 0.22
C127 ECEA1EK470 47 S
C128 ECUV1C104KBV 0.1
55
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Ref.
No. Part No. Part Name & Description Remarks
C129 ECUV1C104ZFV 0.1
C130 ECEA1AKA101 100
C131 ECUV1C104KBV 0.1
C132 ECUV1C104KBV 0.1
C133 ECUV1H390JCV 39p
24.2. Handset
24.2.1. CABINET AND ELECTRICAL
PARTS
Ref.
No. Part No. Part Name & Description Remarks
101 PQJT10182Z CHARGE TERMINAL
102 PQGT15033Z NAME LABEL (for KX-TC1205RUB)
102 PQGT14903Z NAME LABEL (for KX-TC1205RUW)
102 PQGT14904Z NAME LABEL (for KX-TC1205RUS)
102 PQGT14905Z NAME LABEL (for KX-TC1205RUF)
103 PQKF10535Y1 REAR CABINET (for KX-
TC1205RUB) S
103 PQKF10535Y5 REAR CABINET (for KX-
TC1205RUW) S
103 PQKF10535Y4 REAR CABINET (for KX-
TC1205RUS) S
103 PQKF10535Y2 REAR CABINET (for KX-
TC1205RUF) S
104 PQKK10124Z1 BATTERY COVER (for KX-
TC1205RUB) S
104 PQKK10124Z5 BATTERY COVER (for KX-
TC1205RUW) S
104 PQKK10124Z4 BATTERY COVER (for KX-
TC1205RUS) S
104 PQKK10124Z2 BATTERY COVER (for KX-
TC1205RUF) S
105 PQKM10510W1 FRONT CABINET (for KX-
TC1205RUB) S
105 PQKM10510W5 FRONT CABINET (for KX-
TC1205RUW) S
105 PQKM10510W4 FRONT CABINET (for KX-
TC1205RUS) S
105 PQKM10510W2 FRONT CABINET (for KX-
TC1205RUF) S
106 PQSA10084U ANTENNA (for KX-TC1205RUB/KX-
TC1205RUF)
106 PQSA10084V ANTENNA (for KX-TC1205RUW/KX-
TC1205RUS)
107 PQSX10191Z KEYBOARD SWITCH (for KX-
TC1205RUB/KX-TC1205RUF)
107 PQSX10191V KEYBOARD SWITCH (for KX-
TC1205RUW)
107 PQSX10191W KEYBOARD SWITCH (for KX-
TC1205RUS)
108 PQXA36ASVC BATTERY
109 FH1T1200011 CUSHION, URETHANE FORM
110 CG2P1200012 SPEAKER
111 FE4T1200019 SP NET
112 FH2T1200012 BUZZER SHEET
113 PQHR10896Z LIGHT PIPE
114 FE4T1200027 MIC NET
24.2.2. MAIN P.C.BOARD PARTS
Ref.
No. Part No. Part Name & Description Remarks
PCB100 PQWPC1205RUR MAIN P.C.BOARD ASS´Y (RTL)
(ICS)
IC1 SA133122409 IC
IC2 SA138780731 IC
(TRANSISTORS)
Q1 SB110390405 TRANSISTOR(SI)
Q2 SB110390405 TRANSISTOR(SI)
Q3 SB110390405 TRANSISTOR(SI)
Q4 SB010390608 TRANSISTOR(SI)
Q5 SB110390405 TRANSISTOR(SI)
Q6 SB110390405 TRANSISTOR(SI)
Ref.
No. Part No. Part Name & Description Remarks
Q7 SB010390608 TRANSISTOR(SI)
Q8 SB110390405 TRANSISTOR(SI)
Q9 SB110390405 TRANSISTOR(SI)
Q11 SB110390405 TRANSISTOR(SI)
(DIODES)
D1 SC15L414808 DIODE(SI)
D2 SC15L414808 DIODE(SI)
D3 SC15L414808 DIODE(SI)
DV1 BC6K0025101 DIODE(SI)
ZD1 BC4579C1005 DIODE(SI)
ZD3 SC455C5V601 DIODE(SI)
(LEDS)
LED1 SC5E0192115 LED
LED2 SC5E0192115 LED
LED3 SC5E0192115 LED
LED4 SC5E0192115 LED
LED5 SC5E0192115 LED
LED6 SC5E0192123 LED
(COILS)
L1 PQLQZKR68J COIL
L2 PQLQZM120K COIL
L3 PQLQZM120K COIL
L4 PQLQZK120J COIL
L5 PQLQZK120J COIL
L6 PQLQZK1R8J COIL
L7 SH590121N75 COIL
(CERAMIC FILTERS)
CF1 BDFL107MA53 CERAMIC FILTER
CF2 BDFL0455E02 CERAMIC FILTER
DPX1 BDFL0083012 CERAMIC FILTER
(CRYSTAL OSCILLATORS)
X1 BD5R1024501 CRYSTAL OSCILLATOR
X2 BD8R3276805 CRYSTAL OSCILLATOR
X3 BD1R0399202 CRYSTAL OSCILLATOR
(TRANSFORMERS)
T1 CLIP1200053 TRANSFORMER
T3 CLIP1200070 TRANSFORMER
T5 CLIP1200061 TRANSFORMER
T6 CLIP1200088 TRANSFORMER
(OTHERS)
E101 CK15HC12G10 RINGER
E102 CGAP1200019 MICROPHONE
E103 PQJT10183Z CHARGE CONTACT
BATT1 PQJP2D13Z CONNECTOR
VC1 CR00020RRT5 TRIMMER CAPACITOR
(RESISTORS)
R1 ERJ3GEYJ331 330
R2 ERJ3GEYJ153 15k
R3 ERJ3GEYJ682 6.8k
R5 ERJ3GEYJ103 10k
R6 ERJ3GEYJ103 10k
R8 ERJ3GEYJ224 220k
R9 ERJ3GEYJ823 82k
R10 ERJ3GEYJ823 82k
R11 ERJ3GEYJ562 5.6k
R12 ERJ3GEYJ224 220k
R13 ERJ3GEYJ123 12k
R14 ERJ3GEYJ153 15k
R15 ERJ3GEY0R00 0
R16 ERJ3GEYJ103 10k
R17 ERJ3GEYJ512 5.1k
R18 ERJ3GEYJ103 10k
R19 ERJ3GEYJ472 4.7k
R20 ERJ3GEYJ182 1.8k
R21 ERJ3GEYJ823 82k
R22 ERJ3GEYJ472 4.7k
R23 ERJ3GEYJ473 47k
R24 ERJ3GEYJ472 4.7k
R25 ERJ3GEYJ563 56k
R26 ERJ3GEYJ103 10k
R28 ERJ3GEYJ124 120k
R29 ERJ3GEYJ682 6.8k
R30 ERJ3GEY0R00 0
56
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Ref.
No. Part No. Part Name & Description Remarks
R34 ERJ3GEYJ224 220k
R35 ERJ3GEYJ473 47k
R36 ERJ3GEYJ202 2k
R37 ERJ3GEYJ102 1k
R38 ERJ3GEY0R00 0
R39 ERJ3GEYJ224 220k
R40 ERJ3GEYJ330 33
R41 ERJ3GEYJ683 68k
R42 ERJ3GEYJ223 22k
R43 ERJ3GEYJ104 100k
R44 ERJ3GEYJ393 39k
R45 ERJ3GEYJ104 100k
R46 ERJ3GEYJ434 430k
R47 ERJ3GEYJ222 2.2k
R48 ERJ3GEYJ223 22k
R49 ERJ3GEYJ473 47k
R50 ERJ3GEYJ822 8.2k
R51 ERJ3GEYJ272 2.7k
R52 ERJ3GEYJ681 680
R53 ERJ3GEYJ820 82
R54 ERJ3GEYJ104 100k
R55 ERJ3GEYJ390 39
R56 ERJ3GEYJ222 2.2k
R57 ERJ3GEYJ332 3.3k
R58 ERJ3GEYJ470 47
R59 ERJ3GEYJ222 2.2k
R60 ERJ3GEYJ222 2.2k
R61 ERJ3GEYJ331 330
R62 ERJ3GEYJ222 2.2k
R63 ERJ3GEYJ103 10k
R64 ERJ3GEYJ103 10k
R65 ERJ3GEYJ331 330
R66 ERJ3GEYJ222 2.2k
R67 ERJ3GEYJ222 2.2k
R68 ERJ3GEYJ103 10k
R69 ERJ3GEYJ222 2.2k
R70 ERJ3GEYJ222 2.2k
R72 ERJ3GEYJ105 1M
R74 ERJ3GEYJ104 100k
R75 ERJ3GEYJ104 100k
R76 ERJ3GEYJ104 100k
R77 ERJ3GEYJ103 10k
R78 ERJ3GEYJ104 100k
R79 ERJ3GEYJ105 1M
R81 ERJ3GEYJ105 1M
R82 ERJ3GEY0R00 0
R83 ERJ3GEY0R00 0
R84 ERJ3GEYJ105 1M
R85 ERJ3GEYJ102 1k
R86 ERJ3GEYJ104 100k
R87 ERJ3GEYJ104 100k
R91 ERJ3GEY0R00 0
R93 ERJ3GEYJ103 10k
R94 ERJ3GEYJ334 330k
R95 ERJ3GEYJ393 39k
R96 ERJ3GEY0R00 0
R97 ERJ3GEYJ104 100k
R98 ERJ3GEYJ475 4.7M
R99 ERJ3GEYJ472 4.7k
R101 ERJ3GEY0R00 0
R103 ERJ3GEYJ105 1M
R105 ERJ3GEYJ103 10k
R106 ERJ3GEYJ151 150
R107 ERJ3GEYJ222 2.2k
R108 ERJ3GEYJ102 1k
R109 ERJ3GEYJ102 1k
R110 ERJ3GEYJ102 1k
R111 ERJ3GEYJ102 1k
R112 ERJ3GEYJ102 1k
(CAPACITORS)
C1 ECEA1EK470 47 S
C2 ECUV1H473MDV 0.047 S
C3 ECUV1H390JCV 39p
Ref.
No. Part No. Part Name & Description Remarks
C4 ECUV1H270JCV 27p
C5 ECUV1C104ZFV 0.1
C6 ECUV1H102KBV 0.001
C7 ECUV1C104ZFV 0.1
C8 ECUV1H473MDV 0.047 S
C9 ECUV1H103KBV 0.01
C12 ECEA1HKA2R2 2.2
C13 ECUV1H270JCV 27p
C14 ECUV1H103KBV 0.01
C15 ECEA1CKA100 10
C16 ECUV1C473KBV 0.047
C17 ECUV1H102KBV 0.001
C18 ECEA1HKA2R2 2.2
C21 ECUV1H223KBV 0.022 S
C22 ECUV1H390JCV 39p
C23 ECUV1H102KBV 0.001
C24 ECUV1H220JCV 22p
C26 ECUV1H103KBV 0.01
C27 ECUV1C104KBV 0.1
C28 ECUV1H682KBV 0.0068
C29 ECEA1HKA2R2 2.2
C30 ECUV1C104KBV 0.1
C31 ECUV1H103KBV 0.01
C32 ECUV1C104KBV 0.1
C33 ECUV1C104KBV 0.1
C34 ECUV1H101JCV 100p
C35 ECUV1H681JCV 680p
C36 ECUV1H180JCV 18p
C37 ECEA1HKA010E 1
C38 ECUV1H101JCV 100p
C39 ECUV1H151JCV 150p
C40 ECUV1H103KBV 0.01 S
C41 ECUV1H220JCV 22p
C42 ECEA1EK470 47 S
C43 ECEA1HKA2R2 2.2
C44 ECUV1C105ZFV 1
C45 ECUV1C683KBV 0.068
C47 ECUV1H682KBV 0.0068
C48 ECEA1EK470 47 S
C49 ECUV1H223KBV 0.022 S
C50 ECUV1H103KBV 0.01 S
C51 ECEA1CKA100 10
C52 ECUV1H103KBV 0.01 S
C53 ECUV1H223KBV 0.022 S
C54 ECUV1H100DCV 10p S
C55 ECUV1H103KBV 0.01 S
C56 ECUV1H010CCV 1p
C57 ECUV1H150JCV 15p
C58 ECUV1H103KBV 0.01
C59 ECUV1H270JCV 27p
C60 ECUV1H270JCV 27p
C61 ECUV1C104ZFV 0.1
C62 ECUV1H560JCV 56p
C63 ECEA1CK101 100 S
C64 ECUV1H103KBV 0.01 S
C65 ECUV1H150JCV 15p
C66 ECUV1H150JCV 15p
C69 ECUV1C104ZFV 0.1
C70 ECUV1H330JCV 33p
C71 ECUV1H330JCV 33p
C72 ECUV1C104ZFV 0.1
C73 ECUV1C104ZFV 0.1
C74 ECUV1H473MDV 0.047 S
C75 ECUV1H103KBV 0.01
C76 ECUV1H471JCV 470p
C77 ECUV1H471JCV 470p
C78 ECUV1H103KBV 0.01
C79 ECUV1H103KBV 0.01
C80 ECUV1H103KBV 0.01
C84 ECUV1C104ZFV 0.1
C85 ECUV1C105ZFV 1
C86 ECUV1C104ZFV 0.1
C88 ECUV1C104ZFV 0.1
57
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
Ref.
No. Part No. Part Name & Description Remarks
R102 ECUV1H333KBV 0.033 S
24.3. ACCESSORIES AND PACKING
MATERIALS
Ref.
No. Part No. Part Name & Description Remarks
A1 PQJA10075Z TEL CORD
A2 PQLV16CEZ AC ADAPTOR
A3 PQQX13178Z INSTRUCTION BOOK
A4 PQQW12509Z LEAFLET
P1 PQPP10090Z POLY BAG (for Base Unit)
P2 PQPP10091Z POLY BAG (for Handset)
P3 PQPP10092Z POLY BAG
P4 PQPK13522Z GIFT BOX
58
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
25 FOR SCHEMATIC DIAGRAM
25.1. Base Unit (SCHEMATIC DIAGRAM (Base Unit))
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
Important Safety Notice:
Components identified by mark have special characteristics important for safety. When replacing
any of these components, use only the manufacturer´s specified parts.
25.2. Handset (SCHEMATIC DIAGRAM (Handset))
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
59
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
26 SCHEMATIC DIAGRAM (Base Unit)
26.1. Base Unit
RX
TX
+5V
+5V
0V
0V
+12V
0V
+12V
0V
0V
+12V
+12V
+5V
13V to 5V
While charging
1Vp-p
8MHz
KX-TC1205RUB/W/S/F SCHEMATIC DIAGRAM (Base Unit)
ADAPTOR
120V AC
12VDC
200mA
CHG D
TX D
VCC
HOOK
OSCO
OSCI
CHG LD
DTMF1
DTMF2
DTMF3
DTMF4
PAGE
RXDATA
CLOCK DATA
POW F
ZD7.5
TEST
DTMF0
P MUTE
RESET
COUT1
AGC CIRCUIT
AGC
CIRCUIT
RING
IMPEDENCE
PULSE
DAIL
LIMITED CURRENT
RING SELECT
STROBE
CNDET
VTX
JK1
CHARGE--
TP
TP
TP
TP
TP
TP
TP
CHARGE+
TP
TP
TP
TP
R189
22K
R0603 D9
D\362
D10
D\362
R179
NA
R0603
R178
NA
R10
R11
1K
R0603
+
C102
220UF/25V
EC10/5
R153
1M
R0603
R166
47
R0603
R186
4K7
R0603
C104
104
C0603
C120
NA
C0603
ZD9
NA
ZD7.5
ZD10
15V/0.5W
ZD7.5
+
C66
100uF/10V
EC10/5
C64
104
C0603
R88 10K
R0603
R64
10K 1/4W
R0603
R57
220K
R0603
X2
7.952
XTAL\10
L11
JUMP
4MM
C67
22P
C0603
C63
103
C0603
C76
680P 500V
CC6\5
FS1
JUMP 5MM
FUSE\12.5
L4
12uH
L10
LED1
19-21VGC/
TR8 GREEN
CHARGE
LED
RY1
500 OHM
RY1
T7
LB-0627
61
2
43
5
JK1
LINE JACK 4C
LINE\JK1
1
2
3
4
D1
D\362
R145
1K
R0603
ZD8
ZD7.5
C96
103
R0603
C77
150P
C0603
JK2
JACK DC
Q6
SOT-23
+
-
IC3D
SIP14
12
13
14
411
ZD4
NA
R89 10K
R0603
L3
JUMP
4MM
Q20
SOT-23
ZNR1
270V
ZNR\7K
R61
220K
R0603
R59
100K
R0603
R84 10K
R0603
R83 10K
R0603
C75
223
C0603
R105
4.7K
R0603
R86
47K
R0603
R58
510
R0603
R120
0
R0603
R144
20M 1/4W
R10
C80
680P 500V
CC6\5
L6
12uH
L10
C65
22P
C0603
R74
0
R0603
C71
104
C0603
R107
110 2W
R15
R99
82K
R0603
R92
10K
R0603
+
C68
0.47uF/50V
EC5\5
Q9
SOT-23
C126
224
C0603
Q7
SOT-23
Q8
SOT-23
R98
12K
R0603
L9
JUMPER
L10
L8
JUMPER
L10
L5
12uH
L10
L7
12uH
L10
+
C94
100UF\10V
EC8\5
+
C95
470UF\25V
EC10\5
R118
150 1/2W
R12.5
R100
100K
R0603
C121
103
C0603
R106
22 1/4W
R10
Q18
TO-92\EBC
R142
22 1/4W
R10
C99
103
C0603
Q21
SOT-23
+
C78
470UF/10V
EC10/5
R109
330K
R0603
R114
22K
R0603
R108
4K7
R0603
R167
10K
R0603
R111
470
R0603
ZD5
4V7
D\362
ZD3
4V7
D\362
C83
NA
C0603
R87 1K
R0603
R115
56K
R0603
R133
82
R0603
C89
NA
C0603
Q11
SOT-23
C85
683
C0603
C90
224
C0603
R126
620
R0603
R122
1K3
R0603
+
C127
47UF
R141
5K1
R0603
C92
104
C0603
R123
15K
R0603
R129
6K8
R0603
D7
2700V
R149
1K8
R0603
R148
10K
R0603
R143
510K
R0603
R119
82K
R0603
Q19
TO-92\EBC
C101
562
C0603
R150
510K
R0603
+
C97
4U7/50V
EC5\5
R171 1K
R0603
D2
D10B
R146
15K
R0603
R60
22K
R0603
+
C98
220uF
EC5\5
R91 150KR0603
R128
NA
R10
D3
D10B
D4
D10B
R127
NA
R10
Q16
SOT-23
R157
NA
R0603
R139
10M
R0603
R117
390K
R0603
R187
27K
R0603
Q13
NA
SOT-23
C88
105
C0603 R134
0
R0603
R188
10K
R0603
R172
22K L10
Q12 TO-92\EBC
R121
NA
R0603
C84
NA
C0603
R138
4K7
R0603
R130
27 R0603
R10
R124
27 R0603
R10
Q15
TO-92\EBC
R161
0
R0805
R160
0
R0805
R162
NA
R0805
R163
NA
R0805
R159
100K
R0603
R158
NA
R0603
C86
103
C0603
R116 0
R0603
C87
NA
C0603
R137
4K7
R0603
C108
104 R0603
R93
100K
R0603
R82 10K
R0603
R97
8K2
R0603
R76
NA
R0603
R151
6K8/1W
R12.5
R94
NA
R0603
R113
33/1W
R12.5
R112
1K
R0603
R135
1.5K
0603
C107
104
C0603
C106
105
C0603
R78 39K R0603
R77 20K R0603
R75 10K R0603
C93
562
C0603
C111
103
R0603
+
-
IC3A
SIP14
3
2
1
4 11
R81 160K R0603
R79 82K R0603
R180
56K
R0603
R104
4K7
R0603
C69
270P
C0603
R90
300K
R0603
R96
270K
R0603
R103
22K
R0603
C72
223
C0603
C70
223
C0603
R95
3K9
R0603
C124
224
C0603
C123
474
C0603
R181
330
R0603
+
C105
100UF/10V
EC5/5
C74
104
C0603
C73
104
C0603
C82
104
C0603
C79
104
C0603
ZD2
22V/1W
ZD7.5
D6
D10B
IC2
DIP28
1
2
3
5
6
7
8
9
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
4
10
XOUT
XIN
TEST
P66
P65
P64
P63
P62
P60
P77
P76
VSS
VDD
RST
P10
P11
P12
P13
P14
P15
P16
P17
P72
P73
P74
P75
P67
P61
R68
100K
R0603
SW1
PAGE
SW2P
ZD1
22V/1W
ZD7.5
ZD6
27V
ZD7.5
C100
1U/250V
MPC25\22
Q10
TO-92\EBC
R63
100K
R0603
IC5
DIP4
ZD7
27V
ZD7.5
R110
100K
R0603
+
C91
10uF/100V
EC5\5
D5
D10B
R62
NA
R0603
R147 0
R0603
+
-
IC3B
SIP14
5
67
411
R102
NA
R0603
+
-
IC3C
SIP14
10
98
411
C132
104
C0603
R131
100K
R0603
R132
2K2
R0603
R125
NA
R0603
R152
20M 1/4W
R10
R80 2K2 R0603
R85 10K
R0603
C81 1U/250V
MPC25/22
Q17
SOT-23
Q14
SOT-23
VCPU
RING DET
VB
VREG VB
VREG
VB
AGC2
VREG
VREG
RF-DATA
RX DATA
TX DATA
EXPO
COMP
VCPU
RINGDET
PMUTE
CR-DET
VREG
CHAG-CNTL
CHAG-CNTL
VTX
RF-STB
A
PIN2
RF-CLK PMUTE
AGC1
AGC1
IC3 PIN7
AGC2
VREG
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
60
26.2. RF Unit (Base Unit)
RX
TX
4.4V 450kHz
10.7MHz
2.1V
4.8V
0V
0V
KX-TC1205RUB/W/S/F SCHEMATIC DIAGRAM (RF Unit (Base Unit))
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
C104
39P
C0603
R28
NA
R0603
R29
0
R0603
R27
56
R0603
R19
120K
R0603
R32
1M
R0603
R20
4M7
R0603
C129
104
C0603
IC4
4
3
2
1
5
6
7
8
R190
10K
R0603
C128
104
C0603
C133
39P
C0603
R12
100
R0603
C23
103
C0603
R39
NA
R0603
C109
682
C0603
R176
0
R0603
C50
22U/16V
EC5/5
R156
47
R0603
R18
4K7
R0603
R155
47
R0603
R154
0
R0603
C103
47UF/10V
EC5/5
R194
0
R0603
C13
NA
C0603
C47
103
C0603
C2
473
C0603
Q1
TO-92\EBC
R2
330
R0603 R5
10K
R0603
R4
8K2
R0603
R24
10K
R0603
C43
104
C0603
R17
0
R0603
L1
2.2uH
L7.5
R54
NA
R0603
C36
100P
C0603
VC1
20P
C40
27P
C0603
R8
10K
R0603
C28
104
C0603
C52
223
C0603
C29
104
C0603
R26
47K
R0603
ZD11
15V/0.5W
ZD7.5
R13
62K
R0603
R51
1K8
R0603
R44
100K
R0603
R49
47K
R0603
R170
1K
R0603
R174
1K
L10
R173
1K
L10
C12
103
C0603
C34
470P
C0603
T1
1431
IFT\7
13
R50
8K2
R0603
DPX1
0830
DUP\5P
3
4
2
5
1
ANT
GRX
GTX
RX
TX
R3
15K
R0603
C6
104
C0603
R21
47K
R0603
C33
100P
C0603
T5
1436
IFT\7
4
5
3
2
1
R1
47
R0603
C45
682
C0603
T6
1961
IFT\7
C41
47U/10V
EC5/5
C53
12P
C0603 Q3
SOT-23\ECB
R43
39K
R0603
DV1
VCD2
C61
104
C0603
R31
47K
R0603
R38
82K
R0603
R36
220K
R0603
C125
10P
C0603
R30
100K
R0603
X1
11.15MHZ
XTAL\10A
R9
NA
R0603
C54
2P
C0603
C44
105
C0603
C37
150P
C0603
R25
68K
R0603
C24
223
C0603
R52
2M2
R0603
L10
1.2uH
L10
C1
47UF/10V
EC5/5
C35
18P
C0603
C11
473
C0603
C8
104
C0603
CF2
450
FILTER\2
1 5
2
3
4
C38
1U/16V
EC5/5
C7
102
C0603
CF1 10.7MHZ
FILTER\1
1 3
2
R14
R0603
10K
C26
7P
C0603
C16
27P
C0603
R23
56K
R0603
C15
2U2/50V
EC5/5
C30
2U2/50V
EC5/5
C18
473
C0603
C17
10U/16V
EC5/5
C19
102
C0603
C31
103
C0603
R15
R0603
5K6
T2
1437
4
6
3
2
1
C20
2U2/50V
EC5/5
R16
15K
R0603
C27
103
C0603
C55
103
C0603
R22
4K7
R0603
C42
2U2 50V
EC5/5
R41
R0603
47K
R46
2K2
R0603
R33
0
R0603
IC1
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Q5
SOT-23
Q2
SOT-23
C60
18P
C0603
C39
103
C0603
R45
330K
R0603
C25
822
C0603
C48
223
C0603
C57
39P
C0603
C62
39P
C0603
C59
39P
C0603
R56
2K2
R0603
R37
100
R0603
L12
750nH
L1206
R48
22K
R0603
C58
682
C0603
R40
22K
R0603
R175
NA
R0603
C51
103
C0603
C10
470P
C0603
C9
470P
C0603
R10
39K
R0603
R7
330K
R0603
R6
10K
R0603
R193
100K
R0603
R191
68K
R0603
R192
120K
R0603
R47
NA
R0603
C131
104
C0603
C32
2U2/50V
EC5/5
C4
103
C0603
C22
103
C0603
ANT1
ANTENNA
PAD3
R53
15K
R0603
R42
10K
R0603
R35
100
R0603
C130
10uF
C0603
C5
NA
C0603
C46
102
C0603
C14
NA
C0603
C56
18P
C0603
R55
680
R0603
Q4
SOT-23\
ECB
C49
103
C0603
C110
47P
R0603
R34
NA
R0603
CH+
A
VREG
VB
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
61
27 SCHEMATIC DIAGRAM (Handset)
27.1. Handset
KX-TC1205RUB/W/S/F SCHEMATIC DIAGRAM (Handset)
TALK
RECHG
ROW0
ROW5
ROW3
ROW2
ROW1
ROW4
ROW5
ROW4
ROW3
ROW2
ROW1
ROW0
CHG+
CHG-
VBAT
TP
TP TP
TP
TP TP TP
R111
1K
R0603
R104
NA
R0603
L7 120 OHM COIL SMD R0805
X3
4.0 MHZ
XTAL\10
C63
100uF/10V
EC4\2.5
MINI
R64 10K R0603
C68
NA
C0603
C67
NA
C0603 R56
2K2
R0603
R54
100K
R0603
R74 100K R0603
R84
1M
R0603
C71
33P
C0603
R78 100K R0603
R68 10K R0603
R70 2K2 R0603
R75 100K R0603
R60 2K2 R0603
R62 2K2 R0603
R66 2K2 R0603
R57 3K3 R0603
R59 2K2 R0603
R55
39
R0603
BZ1
BZ
BZ12
1
2
C74
473
C0603
R87
100K
R0603
R86
100K
R0603
R85
1K
R0603
C69
104
C0603
C72
104
C0603
D1
D\362
ZD3
5V6 0.5W
ZD7.5
R65 330
R0603
R76 100K R0603
R63 10K R0603
R67 2K2 R0603
R61 330
R0603
R72
1M
R0603
R80
NA
R0603
R58 47 R0603
C70
33P
C0603
LED5 GREEN
LED\SQ
LED6 RED
LEC\SQ
R83
0
R0603
R71
NA
R0603
R73
NA
R0603
R81
1M
R0603
Q7
STO-23
BATT1
3V6/300mA
CNT2P\2.5
1
2
C73
104
C0603
Q11
SOT-23
R79
1M
R0603
R77 10K R0603
LED1
GREEN
LED\SQ
LED2 LED3
GREEN
LED\SQ
GREEN
LED\SQ
LED4
GREEN
LED\SQ
L5
12uH
L7.5
Q9
SOT-23
K6 PAUSE
1 2
K9 0
1 2
K12 8
1 2
K18 2
1 2
K2 FLASH
1 2
IC2
QFP-44P
32
31
30
29
27
26
25
24
1
2
3
4
5
6
7
8
9
10
11
28
33
12
13
14
15
16
17
18
19
20
21
22
23
34
35
36
37
38
39
40
41
42
43
44
P13
P12
P11
P10
P50
P67
P66
P65
P73
P72
P71
P70
P07
P06
P05
P04
P03
P02
P01
P51
P14
P00
TEST
RESET
XIN
XOUT
VSS
NC
P60
P61
P62
P63
P64
P15
P16
P17
P20
XTIN
XTOUT
VDD
P77
P76
P75
P74
K15 5
1 2
K7 CH
1 2
K10 #
1 2
K13 9
1 2
K16 6
1 2
K19 3
1 2
K4 REDIAL
KP\RO\4.5C
1 2
K1 RINGER
1 2
K22 DIRT
1 2
K21 AUTO
1 2
K20 TALK
1 2
K3 LOUD
1 2
K5 PROG
1 2
K8 *
1 2
K11 7
1 2
K14 4
1 2
K17 1
1 2
X2
32.768KHz
XTAL\2R
C65
15P
C0603
C66
15P
C0603
L3
12uH
L4
C64
103
C0603
L4
12u
HL7.5
L2
12uH
L4 R53
82
R0603
Q8
SOT-23
R82 0
R0603
R69 2K2 R0603
R105 10K R0603
R112 1K R0603
D3
D\362
ZD1
10V 0.5W
D\362
C86
104
C0603
D2
D\362
C84
102
C0603
RX DATA
RF-CLK
RF-DATA
RSSI
VOL1
VOL2
TX DATA
VTX
RF-STB
R91(LOW BATT)
3.9V0V
0V
0V
3.9V
3.9V
0V
3.9V to 0V
While charging
0V to 5V
While charging
2Vp-p
4MHz
3.5Vp-p
32.768kHz
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
62
27.2. RF Unit (Handset)
RX
TX
KX-TC1205RUB/W/S/F SCHEMATIC DIAGRAM (Handset (RF Unit))
IC1
VREF
IST Mix IN
VCC2
VCO CONT
VCO1
VCO2
C-RECT
RX CP
TX CP
PLL GND
TX IN
VCC3 LO1 LO2 S-OUT DATA STB FL-OUT
FL-IN COMP
OUT C-NF AF
OUT
REF
IN
AF-IN
REF
OUT
EXP OUT
REC IN
RO1
RO2
BAT. ALM
RSSI
DATA O/P
DATA I/P
FIL-INF OUTDET.
OUT
QUADIF
OUT
GND2DECIF
IN
VCC12ND
MIX
OUT
N-REC2ND
MIX
IN
E-REC
IST
MIX
OUT
IFT\7
VR8
RX DATA
GND
CLK
VOL1
VOL2
VB
RSSI
IC2-22
RF-STB
RF-DATA
RF-CLK
VTX
TXDATA
VBAT
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
R99
4K7
R0603
C60
27P
C0603
R21
82K
R0603
C80
103
C0603
C79
103
C0603
C78
103
C0603
REC1
SD153
SIP2
R97
R0603
100K
R110
1K
R0603
R109
1K
R0603
R108
1K
R0603
C22
39P
C0603
Q1
SOT-23\EBC
R10
R0603
82K
C87
N/A
C0603
MC1
MIC
+
C51
10U/16V
EC5/2.5
R36
2K
R0603
C88
104
C0603
C3
39P
C0603
C20
NA
C0603
R107
2K2
R0603
C85
105
C0603
C10
NA
C0603
C50
103
C0603
C2
473
C0603
C52
103
C0603
R1
330
R0603
R5
10K
R0603
R3
6K8
R0603
L1
0.68UH
L7.5
R26
10K
R0603
C44
105
C0603
R15
0
R0603
C41
22P
C0603
VC1
20P
C32 104
C0603
Q2
SOT-23\ECB
Q3
SOT-23\ECB
R20
1K8
R0603
R18
10K
R0603
C38
100P
C0603
R6 10K
R0603
C28
6800P
C0603
R29
6K8
R0603
C53
223
C0603
C27
104
C0603 R13
12K
R0603
C23
102
C0603
R9
82K
R0603
C30
104
C0603
R16
10K
R0603
R51
2K7
R0603
R45
100K
R0603
R49
47K
R0603
C9
103
C0603
27P
C0603
C35
680P
C0603
T1
1431
IFT\7
13
R50
8K2
R0603
DPX1
DPX0830
DUP\25P
3
4
2
5
1
ANT
GRX
GTX
RX
TX
R2
15K
R0603
T5
1856
IFT\7
4
5
3
2
1
C5
104
C0603 R8
220K
R0603
R19
4K7
R0603
C34
100P
C0603
R106
150
R0603
C47
682
C0603
T6 1960
IFT\7
+
C42
47U/10V
EC5/2.5
C54
10P
C0603 Q5
SOT-23\EBC
R44
39K
R0603
DV1
VCD2
C61
104
C0603
R41
68K
R0603
R39
220K
R0603
R35 47K
R0603
R34
220K
R0603
C56
1P
C0603
X1
10.245MHZ
XTAL\10A
R7
NA
R0603
C46
NA
C0603
C39
150P
C0603
R28
120K
R0603
C21
223
C0603
L6
1.8uH
L7.5
+
C1
47UF/10V
EC5/2.5
C8
473
C0603
C36
18P
C0603
C6
102
C0603
CF2
455E
FILTER\2
1 5
2
3
4
+
C37
10U/16V
EC5/2.5
C7
104
C0603
CF1 10.7MHZ
FILTER\1
1
2
3
C24
22P
C0603
+
C12
2U2/50V
EC5/2.5
C13
27P
C0603
R25
56K
R0603
C16
473
C0603
+
C29
2.2U/50V
EC5/2.5
C17
102
C0603
+
C15
10U/16V
EC5/2.5
+
C18
2.2U/50V
EC5/2.5
R11
R0603
5K6 R17
5K1
R0603
T3
1440
4
6
3
2
1
R14
15K
R0603
C26
103
C0603
+
C43
2U2/50V
EC5/2.5
R24
4K7
R0603
R101 0 R0603
C55
103
C0603
R43
R0603
100K
R47
2K2
R0603
R38
0
R0603
Q6
SOT-23\EBC
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
24
22
23
21
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Q4
SOT-23\ECB
C40
103
C0603
C59
27P
C0603
C62
56P
C0603
R52
680
R0603
R40
33
R0603
C11
NA
C0603
C14
103
C0603
R46
430K
R0603
C49
223
C0603
C57 15P
C0603
R48
22K
R0603
C58
103
C0603
R42
22K
R0603
R91
0R0603
R96
0
R0603
R94
330K
R0603
R95 39K
R0603
R93
10K
R0603
C75
103
C0603
C76
470P
C0603
C77
470P
C0603
R12
220K
R0603
C31
103
C0603
R103
1M
R0603
ANT1
ANTENNA
PAD3
R102
333
C0603
R98
4M7
R0603
C45
683
C0603
R30
0
R0603
R37
1K
R0603
+
C48
47U/10V
EC5/2.5
R22
4K7
R0603
C33
104
C0603
R23
47K
R0603
450kHz
3.9V 0V
10.7MHz
2.1V
RX
3.9V
3.1V
(In Talk Mode)
TX 0V
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
63
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
64
28 CIRCUIT BOARD (Base Unit)
28.1. Component View
IC5
KX-TC1205RUB/W/S/F CIRCUIT BOARD (Component View (Base Unit))
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
65
28.2. Flow Solder Side View
RING DET
(CPU: 24)
T.P ( CH change at test mode)
R98: for Changing the channel
XOUT
(CPU: 1)
VDD (CPU: 28)
RST
(CPU: 27)
RX DATA
(CPU: 10)
RX DATA
(RF IC: 23)
CHG DET
(CPU: 18)
TX DATA
(CPU: 17)
CHG LD
(CPU: 26)
DETOUT
(RF IC: 27)
TX-VCO 2nd Mix
(RF IC: 36) IF IN
(RF IC: 32)
RX-VCO
+12V
RING
TIP
GND
TXPOWER TXGND TX DATA
(DV1)
IC3
IC4
IC2
IC1
KX-TC1205RUB/W/S/F CIRCUIT BOARD (Flow Solder Side View (Base Unit))
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
66
29 CIRCUIT BOARD (Handset)
29.1. Component View
(G) Noise Squelch
(A) Battery Low
VDD (CPU: 40) CHG DET
(CPU: 37)
TX DATA
(CPU: 36)
TX DATA
(DV1)
IC2
KX-TC1205RUB/W/S/F CIRCUIT BOARD (Component View (Handset))
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
67
29.2. Flow Solder Side View
TXPOWER
2nd Mix
(RF IC: 36) TXGND
TX VCO
RX VCO
IF IN
(RF IC: 32)
V Bat
(RF IC: 33)
IC1
KX-TC1205RUB/W/S/F CIRCUIT BOARD (Flow Solder Side View (Handset))
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
68
69
KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF
I
KXTC1205RUB
KXTC1205RUW
KXTC1205RUS
KXTC1205RUF

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