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Model
KX-TG1611CAH KX-TG1611CAR KX-TG1611CAW KX-TG1612CA3 KX-TG1612CAH KX-TGA161RUH KX-TGA161RUR KX-TGA161RUW
Pages
64
Size
2.11 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS PHONE
File
kx-tg1611cah-kx-tg1611car-kx-tg1611caw-kx-tg1612ca.pdf
Date

Panasonic KX-TG1611CAH / KX-TG1611CAR / KX-TG1611CAW / KX-TG1612CA3 / KX-TG1612CAH / KX-TGA161RUH / KX-TGA161RUR / KX-TGA161RUW Service Manual ▷ View online

5
KX-TG1611CA/KX-TG1612CA/KX-TGA161RU
2.2.1.
Suggested PbF Solder
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper
(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufacturer’s
specific instructions for the melting points of their products and any precautions for using their product with other materials. The
following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3 mm, 0.6 mm and 1.0 mm. 
2.3.
Discarding of P.C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
0.3 mm X 100 g
0.6 mm X 100 g
1.0 mm X 100 g
6
KX-TG1611CA/KX-TG1612CA/KX-TGA161RU
3 Specifications
Note:
• Design and specifications are subject to change without notice.
Note for Service:
• Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on condition 
• Analog telephone connection: Telephone Line
 Standard:
DECT (Digital Enhanced Cordless 
Telecommunications),
   Number of channels:
120 Duplex Channels
   Frequency range:
1.88 GHz to 1.90 GHz
   Duplex procedure:
TDMA (Time Division Multiple Access)
   Channel spacing:
1,728 kHz
   Bit rate:
1,152 kbit/s
   Modulation:
GFSK (Gaussian Frequency Shift Keying)
   RF transmission power:
Approx. 10 m W (average power per channel) 
   Power source (AC Adaptor):
220-240V AC, 50/60 Hz
   Power consumption
Base unit: PNLV226CE0Z
Base unit:
Charger: PNLV226CE0Z
Standby: Approx. 0.6 W
Maximum: Approx. 3.3 W
Charger:
Standby: Approx. 0.1 W
Maximum: Approx. 2.2 W
   Operating conditions:
0
°C–40°C, 20%–80% relative air humidity (dry) 
   Dimensions:
Base unit : 
Approx. 90 mm x 100 mm x 50 mm
Handset : Approx. 49 mm x 30 mm x 159 mm
Charger: Approx. 72 mm x 76 mm x 43 mm
 
 Mass (weight):
Base unit :  Approx. 100 
g
Handset: Approx. 130 
g
Charger: Approx. 50 
g
   Voice coding:
ADPCM 32 kbit/s
7
KX-TG1611CA/KX-TG1612CA/KX-TGA161RU
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
B
  
  J 
H o o k 
S w i t c h 
A u d i o 
A n a l o g 
F r o n t 
E n d 
D S P 
R F 
C P U 
X T A L 
2 0 . 7 3 6 M H z 
A N T 1 
A N T 2 
B r i d g e 
R e c t 
D2
Q2/3
Q1
E E P R O M 
t o 
T e l _ L i n e 
t o  
 A C 
A d a p t o r 
C O S I C 
X1
C O S I C 
I / F 
C h a r g e + 
C h a r g e - 
3 . 3 V 
R e g u l a t o r 
2 . 6 V 
R e g u l a t o r 
3 . 3 V 
2 . 6 V 
B 1 3 
B 1 4 
B 2 3 
B 2 4 
B 3 8 
B 6 2 
B 6 7 
B 6 0 
B 6 1 
L i m i t 
resistor
S C L 
D A T 
B 8 2 
B 8 1 
2 . 6 V 
IC3
IC1
IC2
IC4
KX-TG1611/1612  BLOCK DIAGRAM (BASE UNIT)
R39
C26, R33, R200, C27, R34, R201
8
KX-TG1611CA/KX-TG1612CA/KX-TGA161RU
4.2.
Circuit Operation (Base Unit)
4.2.1.
Outline
Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.7).
• DECT BBIC (Base Band IC): IC3 (career module)
- Handling all the audio, signal and data processing needed in a DECT base unit
- Controlling the DECT specific physical layer and radio section (Burst Module Controller section)
- ADPCM codec filter for speech encoding and speech decoding (DSP section)
- Echo-cancellation and Echo-suppression (DSP section)
- Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)
- DTMF receiver (DSP section)
- Clock Generation for RF Module
- ADC, DAC, timer, and power control circuitry
- All interfaces (ex: RF module, EEPROM, LED, Analog Front End, etc.)
- PLL Oscillator
- Detector
- Compress/Expander
- First/Second Mixer
- Amplifier for transmission and reception
• EEPROM: IC1
- Temporary operating parameters (for RF, etc.)
• Additionally,
- Power Supply Circuit (+2.65V output)
- Crystal Circuit (20.736MHz)
- Charge Circuit
- Telephone Line Interface Circuit
4.2.2.
Power Supply Circuit
The power is supplied to the DECT BBIC, RF Module, EEPROM, Relay Coil, LED and Charge Contact from AC Adaptor as
shown in Fig.101. The power supply is as follows:
<Fig.101>
IC2
BBIC 
IC3-VDDBAT
Q101
L104
R102
H/S 
BBIC (IC301 Charge_start)
BATTERY
R39
CHARGE+
CHARGE-
TP5
TP6
<Base  Unit>
<Handset>
+
F1
2.65V
J2
AC Adaptor
+
EEP ROM
IC1
IC2
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