DOWNLOAD Panasonic KX-PRW110RUW / KX-PRW120RUW / KX-PRWA10RUW Service Manual ↓ Size: 6.94 MB | Pages: 87 in PDF or view online for FREE

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• Repair service shall be provided in accordance with repair technology information such as service manual so as to

prevent fires, injury or electric shock, which can be caused by improper repair work.

1. When repair services are provided, neither the products nor their parts or members shall be remodeled. 
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.

• ICs and LSIs are vulnerable to static electricity.

1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.

1. Danger of explosion if battery is incorrectly replaced.
2. Replace only with the same or equivalent type recommended by the manufacturer.
3. Dispose of used batteries according to the manufacture’s Instructions.

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that
contains lead.
We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver (Ag), and Copper (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder.

• PbF solder has a melting point that is 50 

°F ~ 70 °F (30 °C ~ 40 °C) higher than Pb solder. Please use a soldering iron with 

temperature control and adjust it to 700 

°F ± 20 °F (370 °C ± 10 °C). 

• Exercise care while using higher temperature soldering irons.: 

Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.

• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 

°F (600 °C).

• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the

opposite side (See the figure below).

Component

Component 
pin

solder

Remove all of the
excess solder

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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.

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

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• Design and specifications are subject to change without notice.

• Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition.
• Analog telephone connection: Telephone Line
• Optional DECT repeater: KX-A405
• Optional key detector: KX-TGA20RU

DECT (Digital Enhanced Cordless Telecommunications), GAP (Generic Access Profile), Wi-
Fi (IEEE 802.11 b/g/n).

120 Duplex Channels

DECT:
1.88 GHz to 1.90 GHz
Wi-Fi:
2.412 GHz to 2.472 GHz (channels 1 to 13)

TDMA (Time Division Multiple Access)

1,728 kHz

1,152 kbit/s

GFSK (Gaussian Frequency Shift Keying)

DECT:
Approx. 10mW (average power per channel)
Wi-Fi:
100 mW (peak transmission power)

ADPCM 32 kbit/s

0 °C–40 °C, 20 %–80 % relative air humidity (dry)

220 - 240 V AC, 50/60 Hz
Base unit: PNLV236CE0Z
Charger: PNLV233CEKZ 

Base unit:
Standby: Approx. 2.0 W
Maximum: Approx. 3.9 W
Charger:
Standby: Approx. 0.12 W
Maximum: Approx. 1.8 W

Base unit: Approx. 116 mm x 92mm x 31 mm
Handset: Approx. 47 mm x 35 mm x 153 mm
Charger unit: Approx. 71 mm x 92 mm x 29 mm 

Base unit: Approx. 145.4 g
Handset: Approx. 140 g  
Charger: Approx. 138 g  

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Analog

Front

End

To TEL_LINE

Bridge

Rect D101

Hook Switch

Q141, Q142, Q161

Audio

Bell/Caller ID

Interface

CPU

MICn

LSRp

RINGn

CIDINp

CIDINn

CIDOUT

RINGOUT

BELL

HOOK

CHARGE_DET

Off-Hook Line Voltage

P

ARADET

A/D

D/A

ADPCM

Codec Filter

DSP

Speech Encoding

Speech Decoding

BMC

Burst Encoding

Burst Decoding

RF

PLL

XT

AL2

XT

AL1

EEPROM

SCL

SDA

To AC Adaptor

To HANDSET

Limit

Resistor

R

3

71, R

3

72,

D

3

62

Charge

Detector

CHARGE(+)

CHARGE(-)

for KX-PR

W120 only

IC

3

02 

3

.3

V 

IC

3

0

2

 3

.3

V

 

REGULA

T

O

R

R

E

G

U

L

A

T

O

R

Q502Q

5

0

2

Q501Q

5

0

1

2.4V

Reg.

1.8V

Reg.

3

.3

 V

2.4 V

1.8 V

BBIC

KX-PR

W110/PR

W120 BLOCK DIA

GRAM (BASE UNIT)

MOD/DEMOD

DCDC

Converter

Reset

XTAL

X1X

1

MHz

RX

n

RX

p

TX

p

TX

n

D

A802

ANT1

ANT2

ANT1

ANT2

ANT1

ANT2

L1

L2

DCP

DCM

FLASH MEMORY

QSPI

FLASH MEMOR

Y

RSTN

Pin B8

TAM-CSn

SPI-DI 
SPI-DO

SPICLK

QSPI-CS

QSPI-SCK

QSPI-IO 0-3

Q701, Q702

QSPI

Control

SPI 

Control

Interr

upt

Control

PCM 

Control

Wi-Fi module

IC800

SPI_EN

SPI_DO

SPI_DI

SPI_CLK

BB_TX

BB_RX

BB_TX_RES

BB_RX_RES

PCM_FSC

PCM_DO

PCM_DI

PCM_CLK

PORST_N

20.7

3

6

3

.3

 V

L501