Panasonic KX-TG294SK User manual

© Panasonic System Networks Co., Ltd. 2013
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41303259SE
F13
Telephone Equipment
Model No. KX-TG294SK
KX-TGA470M
Link-to-Cell Cellular Convergence
Solution
M: Metallic Grey Version
(for USA)
Subject : Adding KX-TG294SK to the KX-TG7731 Series.
Note: All other information is the same as KX-TG7731 Service Manual (Order No.
KM41201532CE). You can download and refer the Service Manual on TSN Server.
TABLE OF CONTENTS PAGE PAGE
1 Exploded View and Replacement Parts List ------------ 2
1.1. Cabinet and Electrical Parts (Base Unit) ------------ 2
1.2. Cabinet and Electrical Parts (Handset) -------------- 3
1.3. Cabinet and Electrical Parts (Charger Unit) -------- 4
1.4. Accessories------------------------------------------------- 5
1.5. Replacement Parts List ---------------------------------- 6
1.5.1. Base Unit ----------------------------------------------- 6
1.5.2. Handset ------------------------------------------------- 8
1.5.3. Charger Unit ------------------------------------------10
1.5.4. Accessories and Packing Materials-------------10
1.5.5. Screws--------------------------------------------------10
1.5.6. Fixtures and Tools-----------------------------------10
Supplement-1
Please file and use this supplement manual together with the service manual for Model No. KX-TG7731S,
KX-TG7732S, KX-TG7733S, KX-TGA470S, Order No. KM41201532CE.

2
KX-TG294SK/KX-TGA470CM
1 Exploded View and Replacement Parts List
1.1. Cabinet and Electrical Parts (Base Unit)
E2
19
20
17
16
PCB1
PCB2
9
10
11
12
E1 (*1)
E3
14
13
18
4
5
2
3
6
8
A
A
15
A
A
1
7
13
Ref.No. Figure
A 2.6 x 8mm
22

3
KX-TG294SK/KX-TGA470CM
1.2. Cabinet and Electrical Parts (Handset)
Note:
(*1) This cable is fixed by welding.
(*2) The rechargeable Ni-MH battery HHR-4DPA is available through sales route of Panasonic.
(*3) Attach the SPACER (No. 121) to the exact location described above.
110
B
109
102
103
105
E105
E106
E104
E101(*1)
113 114
108
122
123
121 (*3)
101 107
E103
E102
B
E107
MIC100
PCB100
106
116
115
112
Ref.No.
Ǿ28 mm
B
Figure
117
118
119
111
B
120
(*2)
Spacer (No.121)
Battery cover
Put it in the center.
Stick it between
ribs.
CUSHION RUBBER
*STICK IT WITHIN THE FRAMEWORK ON P.C.B.
104

4
KX-TG294SK/KX-TGA470CM
1.3. Cabinet and Electrical Parts (Charger Unit)
B
200
200-1
200-3
201
200-4
200-2
PCB200
Ref.No.
2~8 mm
B
Figure

5
KX-TG294SK/KX-TGA470CM
1.4. Accessories
A7
A1 A2 A6A3, A4, A5,

6
KX-TG294SK/KX-TGA470CM
1.5. Replacement Parts List
1. RTL (Retention Time Limited)
Note:
The “RTL” marking indicates that its Retention Time is
Limited.
When production is discontinued, this item will
continue to be available only for a specific period of
time.
This period of time depends on the type of item, and
the local laws governing parts and product retention.
At the end of this period, the item 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. ISO code (Example: ABS-94HB) of the remarks column
shows quality of the material and a flame resisting grade
about plastics.
5. RESISTORS & CAPACITORS
Unless otherwise specified;
All resistors are in ohms () k=1000, M=1000k
All capacitors are in MICRO FARADS (F) p=F
*Type & Wattage of Resistor
1.5.1. Base Unit
1.5.1.1. Cabinet and Electrical Parts
1.5.1.2. Main P.C. Board Parts
Note:
(*1) When replacing IC501, IC502, IC601 or X501, make
the adjustment using PNZZTG7741M.
Safety Ref.
No. Part No. Part Name & Description Remarks
1 PNGP1225Y3 PANEL, UPPER PC-V-2
2 PNKM1256Z3 CABINET BODY PS-HB
3 L0AA02A00087 SPEAKER
4 PQHG10729Z RUBBER PARTS, SPEAKER
5 PQHR11313Z GUIDE, SPEAKER ABS-HB
6 PNKE1130Z2 CASE, CHARGE TERMINAL PS-HB
7 PNJT1107Z CHARGE TERMINAL
8 PNJK1148Z KEYBOARD SWITCH, LED
LENS
9 PNBC1404Y3 BUTTON, NAVIGATOR KEY ABS-HB
10 PNHR1585Z GUIDE, BUTTON PS-HB
11 PNBC1345Z1 BUTTON, MESSAGE PMMA-HB
Type
ERC:Solid
ERDS:Carbon
ERJ:Chip
ERX:Metal Film
ERG:Metal Oxide
ER0:Metal Film
PQ4R:Chip
ERS:Fusible Resistor
ERF:Cement Resistor
Type
ECFD:Semi-Conductor
ECQS:Styrol
ECUV,PQCUV, ECUE:Chip
ECQMS:Mica
ECCD,ECKD,ECBT,F1K,ECUV:Ceramic
ECQE,ECQV,ECQG:Polyester
ECEA,ECST,EEE:Electlytic
ECQP:Polypropylene
Wattage
*Type & Voltage Of Capacitor
10,16:1/8W 14,25:1/4W 12:1/2W 1:1W 2:2W 3:3W
Voltage
ECQ Type ECQG
ECQV Type
05:50V
1:100V
2:200V
ECSZ Type
0J :6.3V
1A :10V
1C :16V
1E,25:25V
1V :35V
50,1H:50V
1J :16V
2A :100V
0F:3.15V
1A:10V
1V:35V
0J:6.3V
Others
1H:50V
2A:100V
2E:250V
2H:500V
12 PNJK1146Y KEYBOARD SWITCH, TAM
13 PNLA1047Z ANTENNA, SUB
14 PNLA1052Z ANTENNA, BT
15 PNHR1584Z GUIDE, JACK PS-HB
16 PQJJ1T039L JACK, MODULAR
17 K2ECYZ000001 JACK, DC
18 PNKF1228Z1 CABINET COVER PS-HB
19 PNHA1013Z RUBBER PARTS, FOOT
CUSHION
20 PNGT6445Y NAME PLATE
Safety Ref.
No. Part No. Part Name & Description Remarks
PCB1 PNWP1TG7731H MAIN P.C.BOARD ASS'Y
(RTL)
(ICs)
IC302 C 0DBEYY00102 IC
IC501 C1CB00003663 IC(BBIC)(*1)
IC502 PNWI2TG7741H IC(FLASH)(*1)
IC601 PNWI3TG7741H IC(FLASH)(*1)
IC611 PNWI1TG7731H IC(EEPROM)(*1)
IC751 C 0JBAQ000247 IC
(TRANSISTORS)
Q141 B1ACGP000008 TRANSISTOR(SI)
Q142 B1ABDM000001 TRANSISTOR(SI)
Q161 DSC7003S0L TRANSISTOR(SI)
Q301 B1ADGE000012 TRANSISTOR(SI)
Q302 B1ADGE000012 TRANSISTOR(SI)
Q601 2SC6054JSL TRANSISTOR(SI) S
Q651 PSVTUMG11NTR TRANSISTOR(SI) S
Q652 PSVTUMG11NTR TRANSISTOR(SI) S
Q653 PSVTUMG11NTR TRANSISTOR(SI) S
Q654 2SC6054JSL TRANSISTOR(SI) S
Q731 2SC6054JSL TRANSISTOR(SI) S
Q732 2SC6054JSL TRANSISTOR(SI) S
(DIODES)
D101 PQVDMD5S DIODE(SI)
D133 DA2J10100L DIODE(SI)
D142 PQVDPTZT2530 DIODE(SI) S
D362 B0ECKM000008 DIODE(SI)
DA801 B0DDCD000001 DIODE(SI)
DA802 B0DDCD000001 DIODE(SI)
(COILS)
L80 2 G1C 5N6 Z00 007 C OIL
L80 3 G1C 5N6 Z00 007 C OIL
(RESISTOR ARRAYS)
RA501 D1H422120001 RESISTOR ARRAY
RA651 D1H81024A024 RESISTOR ARRAY
RA652 D1H81024A024 RESISTOR ARRAY
RA653 D1H81024A024 RESISTOR ARRAY
RA721 D1H81024A024 RESISTOR ARRAY
(BT UNIT)
IC721 PNWP3TG7621H BT UNIT
(VARISTOR)
SA101 PQVDDSS301L VARISTOR (SURGE
ABSORBER) S
(RESISTORS)
R10 1 PQ4 R10 XJ4 75 4. 7M S
R10 2 PQ4 R10 XJ4 75 4. 7M S
R10 3 PQ4 R10 XJ1 84 18 0k S
R10 4 PQ4 R10 XJ1 84 18 0k S
R105 PQ4R10XJ10 5 1M S
R106 PQ4R10XJ10 5 1M S
R107 D0GA102JA0 21 1k
R108 D0GA102JA0 21 1k
R109 ERJ2GEJ823 8 2k S
R110 ERJ2GEJ823 8 2k S
R11 1 D0G A39 2JA 015 3 .9k
Safety Ref.
No. Part No. Part Name & Description Remarks

7
KX-TG294SK/KX-TGA470CM
R11 2 D0G A12 4JA 015 1 20k
R121 D0GA102JA0 21 1k
R122 D0GA102JA0 21 1k
R123 D0GA102JA0 21 1k
R125 D0GA271JA015 270
R131 PQ4R18XJ106 10M S
R13 3 ERJ 3GE YJ1 54 15 0k S
R14 1 D0G B10 4JA 057 1 00k
R14 2 PQ4 R18 XJ2 72 2. 7k S
R144 D0GB103JA057 10k
R14 5 D0G A22 2JA 021 2 .2k
R15 1 D0G A10 4JA 021 1 00k
R15 2 ERJ 2GE J47 4X 47 0k S
R159 ERJ3GEY0R00 0 S
R160 ERJ3GEYJ911 910
R16 1 D0G B10 4JA 057 1 00k
R162 D0GB473JA057 47k
R163 ERJ14YJ120U 12
R16 4 D0G B27 2JA 057 2 .7k
R165 ERJ3GEYJ273 27k S
R16 6 ERJ 3GE YJ8 22 8. 2k S
R167 D0GG270JA007 27
R17 8 D0G A33 2JA 015 3 .3k
R311 D0GA103JA021 10k
R312 D0GA103JA021 10k
R321 ERJ2RKF1400 140
R322 ERJ2RKF1000 100
R371 ERJ14YJ1R0U 1
R372 ERJ14YJ1R0U 1
R474 D0GA1R0JA014 1
R475 D0GA1R0JA014 1
R501 D0GA563ZA006 56k
R50 2 D0G A33 2JA 015 3 .3k
R505 D0GA102JA0 21 1k
R506 D0GA101JA021 100
R50 7 D0G A10 4JA 021 1 00k
R508 ERJ2GEJ100 10 S
R511 D0GA102JA0 21 1k
R515 D0GA473JA021 47k
R516 D0GA473JA021 47k
R517 D0GA473JA021 47k
R60 1 D0G A33 2JA 015 3 .3k
R602 D0GA561JA021 560
R603 D0GA561JA021 560
R604 D0GA561JA021 560
R60 5 D0G A22 2JA 021 2 .2k
R606 D0GA103JA021 10k
R607 D0GA103JA021 10k
R611 D0GA103JA021 10k
R61 2 D0G A33 2JA 015 3 .3k
R61 3 D0G A33 2JA 015 3 .3k
R652 D0GA101JA021 100
R653 D0GA681JA021 680
R654 D0GA101JA021 100
R655 D0GA681JA021 680
R656 D0GA101JA021 100
R657 D0GA681JA021 680
R65 8 D0G A12 2JA 015 1 .2k
R665 D0GA103JA021 10k
R668 D0GA561JA021 560
R671 D0GA473JA021 47k
R672 D0GA473JA021 47k
R673 D0GA473JA021 47k
R702 D0GA103JA021 10k
R703 D0GA102JA0 21 1k
R72 1 ERJ 2GE J47 4X 47 0k S
R73 1 D0G A12 4JA 015 1 20k
R73 2 ERJ 2GE J18 4 180 k S
R735 ERJ2RKF4702 47k
R736 ERJ2GEJ223 2 2k S
R738 ERJ2RKF3302 33k
R751 D0GA102JA0 21 1k
R75 2 ERJ 2GE J18 4 180 k S
Safety Ref.
No. Part No. Part Name & Description Remarks
R791 ERJ3GEY0R00 0 S
R801 D0GA180JA015 18
R806 D0GA221JA021 220
R807 D0GA221JA021 220
R891 D0GA221JA021 220
R892 D0GA221JA021 220
(CAPACITORS)
C101 F1K2H681A008 680p
C102 F1K2H681A008 680p
C103 ECUV1C103KBV 0.01
C104 ECUV1C103KBV 0.01
C105 F1K2H681A008 680p
C106 F1K2H681A008 680p
C107 ECUV1C103KBV 0.01
C108 ECUV1C103KBV 0.01
C109 ECUE1H821KBQ 820p
C110 ECUE1H821KBQ 820p
C111 ECUE1A333KBQ 0.033 S
C112 ECUE1H100DCQ 10p S
C113 ECUE1A823KBQ 0.082 S
C123 ECUE1H100DCQ 10p S
C124 ECUE1H100DCQ 10p S
C125 ECUE1H100DCQ 10p S
C132 ECUV1H103KBV 0.01
C142 ECUV1H103KBV 0.01
C152 ECUE1C103KBQ 0.01 S
C161 F1K1E1060001 10
C168 ECUV1A225KBV 2.2 S
C171 ECUV1H472KBV 0.0047
C172 ECUE1H100DCQ 10p S
C173 ECUE1A104KBQ 0.1
C174 ECUE1H222KBQ 0.0022 S
C184 ECUV1C105KBV 1
C186 ECUE1H100DCQ 10p S
C311 ECUV1C105KBV 1
C312 ECUV1C105KBV 1
C321 ECUV1A105KBV 1
C341 F2A1A3310040 330
C342 ECUE1A104KBQ 0.1
C343 ECUE1H100DCQ 10p S
C351 ECUV1C105KBV 1
C460 ECUE1H100DCQ 10p S
C461 ECUE1H100DCQ 10p S
C472 ECUE1H100DCQ 10p S
C473 ECUE1H100DCQ 10p S
C474 ECUE1H222KBQ 0.0022 S
C475 ECUE1H222KBQ 0.0022 S
C476 ECUE1H151JCQ 150p
C477 ECUE1H100DCQ 10p S
C478 ECUE1H100DCQ 10p S
C479 ECUE1H151JCQ 150p
C501 ECUE1A104KBQ 0.1
C502 ECUE0J105KBQ 1
C503 ECUE1H100DCQ 10p S
C504 ECUE1A104KBQ 0.1
C505 ECUE1A104KBQ 0.1
C506 ECUV1A225KBV 2.2 S
C507 ECUV1A105KBV 1
C508 ECUV1A105KBV 1
C509 ECUV0J225KBV 2.2 S
C511 ECUV1A105KBV 1
C513 ECUE1A104KBQ 0.1
C516 ECUE1A104KBQ 0.1
C517 ECUE1A104KBQ 0.1
C518 ECUE1A104KBQ 0.1
C519 ECUE1A104KBQ 0.1
C601 ECUE1A104KBQ 0.1
C603 ECUE1C103KBQ 0.01 S
C611 ECUE1A104KBQ 0.1
C661 ECUE1A104KBQ 0.1
C721 ECUE1A104KBQ 0.1
C731 ECUE1A104KBQ 0.1
C751 ECUE1A104KBQ 0.1
Safety Ref.
No. Part No. Part Name & Description Remarks

8
KX-TG294SK/KX-TGA470CM
1.5.1.3. Operational P.C. Board Parts
1.5.2. Handset
1.5.2.1. Cabinet and Electrical Parts
1.5.2.2. Main P.C. Board Parts
Note:
(*1) Reconfirm the model No. written on the handset's name
plate when replacing PCB100. Because the model No. of
the optional handset may differ from the included handset.
(*2) When replacing IC3 or X1, make the adjustment
using PNZZTG7741M.
C802 F1G1H1R8A480 1.8p
C803 F1G1H1R5A480 1.5p
C804 F1G1H1R8A480 1.8p
C805 F1G1H3R3A480 3.3p
C806 F1G1H3R3A480 3.3p
C809 ECUE1H100DCQ 10p S
C810 F1G1H1R0A480 1p
C811 ECUE1H100DCQ 10p S
C813 F1G1H1R0A480 1p
C814 ECUE1H100DCQ 10p S
C820 F1G1HR70A480 0.7p
C822 ECUE1H100DCQ 10p S
C823 ECUE1H101JCQ 100p
C825 ECUE1H100DCQ 10p S
C826 ECUE1H100DCQ 10p S
C837 F1G1HR90A480 0.9p
C841 F1G1H1R0A480 1p
C851 ECUE1H100DCQ 10p S
C853 ECUE1H100DCQ 10p S
C855 ECUE1H100DCQ 10p S
C856 ECUE1H101JCQ 100p
C857 ECUE1H100DCQ 10p S
C858 ECUE1H101JCQ 100p
C863 F1G1H7R0A480 7p
C864 F1G1H7R0A480 7p
(OTHERS)
E1 L5DYBYY00021 LIQUID CRYSTAL DISPLAY
E2 PNHX1406Z COVER, LCD SHEET
E3 PNHR1386Z GUIDE, LCD ABS-HB
P101 D4DAY220A022 THERMISTOR (POSISTOR)
F301 K5H302Y00003 FUSE
X501 H0J103500037 CRYSTAL OSCILLATOR (*1)
Safety Ref.
No. Part No. Part Name & Description Remarks
PCB2 PNWP2TG7731H OPERATIONAL P.C.BOARD
ASS'Y (RTL)
(LEDS)
LED901 B3AAB0000347 LED
LED902 B3AAB0000347 LED
LED905 LNJ237W82RA LED
LED906 LNJ237W82RA LED
LED907 LNJ237W82RA LED
LED908 LNJ237W82RA LED
LED911 B3AAB0000347 LED
LED912 B3ABB0000331 LED
LED913 B3AAB0000347 LED
LED914 B3ABB0000331 LED
LED915 B3AAB0000347 LED
LED916 B3ABB0000331 LED
(RESISTORS)
R901 D0GA271JA015 270
R902 D0GA271JA015 270
R903 D0GA271JA015 270
R904 D0GA271JA015 270
(CAPACITORS)
C901 ECUV1C105KBV 1
C902 F1H1E1050001 1
C903 ECUE0J105KBQ 1
Safety Ref.
No. Part No. Part Name & Description Remarks
101 PNGP1228Z1 PANEL, LCD PMMA-HB
102 PNYE1066Z TAPE, DOUBLE SIDED
103 PNKM1257Z4 CABINET BODY ABS-HB
104 PNGT7243W NAME PLATE
Safety Ref.
No. Part No. Part Name & Description Remarks
105 L0AD01A00026 RECEIVER
106 PNYE1065Y SPACER, CUSHION LCD
107 PNBC1354Z1 BUTTON, NAVIGATOR KEY ABS-HB
108 PNJK1149Z KEYBOARD SWITCH
109 PNJT1027Z CHARGE TERMINAL (L)
110 PNJT1026Z CHARGE TERMINAL (R)
111 PNJK1150Z RUBBER PARTS, SIDE
SWITCH
112 PQHR11315Z GUIDE, SPEAKER ABS-HB
113 L0AA02A00096 SPEAKER
114 PQHS10784Y SPACER, SPEAKER NET
115 PQJC10056W BATTERY TERMINAL
116 PNKE1131Z1 COVER, EP CAP
117 PNKF1229Z1 CABINET COVER ABS-HB
118 PNHR1588Z OPTIC CONDUCTIVE PARTS,
LED LENS PS-HB
119 PNQT2006Z LABEL, ATTENTION
120 PNQT2335Z LABEL, BATTERY
121 PNHS1079Z SPACER, BATTERY
122 PNKK1066Z1 LID, BATTERY ABS-HB
123 PNYNTGA470BR LID, BATTERY ASS'Y ABS-HB
Safety Ref.
No. Part No. Part Name & Description Remarks
PCB100 PNWP1TGA470R MAIN P.C.BOARD ASS'Y
(RTL) (*1)
(ICs)
IC1 C2HBCY 000081 IC
IC3 PNWITGA470BR IC(EEPROM)(*2)
IC4 C0DBZY Y00357 IC
(TRANSISTORS)
Q2 B1ADCF000040 TRANSISTOR(SI)
Q3 B1ABGE000011 TRANSISTOR(SI)
Q4 B1ADCF000040 TRANSISTOR(SI)
Q5 DRC9113Z0L TRANSISTOR(SI)
Q6 DRC9113Z0L TRANSISTOR(SI)
Q9 2SC6054JSL TRANSISTOR(SI) S
(DIODES)
D13 B0BC4R3A0006 DIODE(SI)
D14 B0BC4R3A0006 DIODE(SI)
D21 B0BC4R3A0006 DIODE(SI)
D22 B0BC4R3A0006 DIODE(SI)
DA801 B0DDCD000001 DIODE(SI)
(LEDS)
LED1 B3ACB0000190 LED
LED2 B3ACB0000190 LED
LED3 B3ACB0000190 LED
LED4 B3ACB0000190 LED
LED5 B3ACB0000190 LED
LED6 B3ACB0000190 LED
LED11 B3ACB0000190 LED
LED12 B3ACB0000190 LED
(COILS)
C81 2 PQL QR4 C8N 2J CO IL S
L4 G1CR18J 000 04 CO IL
(RESISTOR ARRAYS)
RA2 D1H83314A013 RESISTOR ARRAY S
RA3 D1H83314A013 RESISTOR ARRAY S
RA4 D1H433220001 RESISTOR ARRAY
RA5 EXB28V332JX RESISTOR ARRAY
(IC FILTERS)
L1 J0JCC0000286 IC FILTER
L3 J0JDC0000045 IC FILTER
L7 J0JCC0000276 IC FILTER
Safety Ref.
No. Part No. Part Name & Description Remarks

9
KX-TG294SK/KX-TGA470CM
1.5.2.3. LED Board Parts
L10 J0JCC0000286 IC FILTER
L75 J0JCC0000286 IC FILTER
(SWITCHES)
VOL_DW K0H1BB000094 TACTILE SWITCH
VOL_UP K0H1BB000094 TACTILE SWITCH
(RESISTORS)
R2 ERJ2GE J303 30k
R3 D0 GA1 52J A02 1 1.5k
R4 D0GA47 3JA021 47k
R6 D0GA10 3JA021 10k
R7 D0 GA1 04J A02 1 100k
R8 PQ4R18XJ3R3 3.3 S
R9 ERJ2GE J303 30k
R21 D 0GA104JA0 21 10 0k
R22 D 0GA332JA0 15 3. 3k
R23 ERJ2GEYJ391 390 S
R24 ERJ2GEJ100 10 S
R25 D 0GA222JA0 21 2. 2k
R26 D 0GA332JA0 15 3. 3k
R27 D 0GA222JA0 21 2. 2k
R28 D 0GA222JA0 21 2. 2k
R31 E RJ2RKF100 3 100 k
R32 D 0GA104JA0 21 10 0k
R33 E RJ2RKF100 3 100 k
R34 ERJ2GEYJ391 390 S
R45 ERJ6RSJR10V 0.1
R50 D0GA151JA021 150
R51 D0GA151JA021 150
R60 D 0GA222JA0 21 2. 2k
R66 D0GA10 3JA021 10k
R67 D0GA10 3JA021 10k
R68 D0GA10 3JA021 10k
R69 D0GA10 3JA021 10k
R70 D0GA470JA021 47
R73 D0GA330JA015 33
R74 D0GA330JA015 33
R80 D0GA101JA021 100
R806 ERJ2GEJ471 470 S
R807 ERJ2GEJ471 470 S
L8 ERJ2GEJ100 10 S
L9 ERJ2GE0R00 0 S
(CAPACITORS)
C1 EEE0JA221WP 220
C2 EEE0JA221WP 220
C3 EEE0JA221WP 220
C4 ECUE1H 390JCQ 39p
C5 ECUE1A104KBQ 0.1
C6 ECUE1A104KBQ 0.1
C9 ECUE1H 390JCQ 39p
C10 ECUE1H 390JCQ 39p
C11 ECUE1A104KBQ 0.1
C12 PQCUV0J106KB 10 S
C13 ECUE1A104KBQ 0.1
C14 ECUV1C393KBV 0.039
C15 ECUE1H 390JCQ 39p
C16 F1J0J2260002 22
C17 ECUE1H 100DCQ 10p S
C18 ECUE1H 100DCQ 10p S
C20 ECJ1VB0G106M 10 S
C21 ECUE0J105KBQ 1
C22 ECUE1A104KBQ 0.1
C23 ECUE1A104KBQ 0.1
C24 ECUE0J105KBQ 1
C25 ECUV1A225KBV 2.2 S
C26 ECJ1VB0G106M 10 S
C27 ECUE1H102KBQ 0.001 S
C29 ECUV1A105KBV 1
C30 ECUV1A105KBV 1
C31 ECJ1VB0G106M 10 S
C32 ECUE0J105KBQ 1
C33 ECUE1A104KBQ 0.1
C34 ECUE1H 390JCQ 39p
C36 ECUE1A104KBQ 0.1
Safety Ref.
No. Part No. Part Name & Description Remarks
C37 ECJ1VB0G106M 10 S
C39 ECUE1H102KBQ 0.001 S
C40 ECUE1A104KBQ 0.1
C41 ECUE1A104KBQ 0.1
C42 ECUE1H102KBQ 0.001 S
C43 ECUE1A104KBQ 0.1
C44 ECUE0J105KBQ 1
C45 ECUE1A104KBQ 0.1
C46 ECUE1H100DCQ 10p S
C51 ECJ1VB0G106M 10 S
C52 ECUE1H100DCQ 10p S
C53 ECUE1H120JCQ 12p S
C56 ECUE0J105KBQ 1
C57 ECUE0J105KBQ 1
C58 ECUE0J105KBQ 1
C68 ECUE0J105KBQ 1
C69 ECUE1A104KBQ 0.1
C72 ECUE1H100DCQ 10p S
C73 ECUE1H100DCQ 10p S
C76 ECUE1H100DCQ 10p S
C77 ECUE1H100DCQ 10p S
C79 ECUE1H101JCQ 100p
C80 ECUV1C393KBV 0.039
C81 ECUE1H101JCQ 100p
C82 ECUE1H471KBQ 470p S
C83 ECUE1H100DCQ 10p S
C84 ECUE1H102KBQ 0.001 S
C87 ECUE1H102KBQ 0.001 S
C88 ECUE1H100DCQ 10p S
C89 ECUE1H100DCQ 10p S
C90 ECUE1A104KBQ 0.1
C91 ECUV1C105KBV 1
C92 ECUE0J105KBQ 1
C93 ECUV1C105KBV 1
C96 ECUE1H100DCQ 10p S
C97 ECUE1H100DCQ 10p S
C801 ECUV1H100DCV 10p
C802 F1G1H2R0A480 2p
C803 F1G1H1R3A480 1.3p
C804 F1G1H1R8A480 1.8p
C805 F1G1H2R4A480 2.4p
C806 F1G1H2R4A480 2.4p
C810 F1G1H2R5A480 2.5p
C811 ECUE1H101JCQ 100p S
C813 F1G1H1R6A480 1.6p
C820 F1G1H1R8A480 1.8p
C822 ECUE1H100DCQ 10p S
C825 ECUE1H100DCQ 10p S
C826 ECUE1H100DCQ 10p S
C863 F1G1H1R8A480 1.8p
C897 F1G1H240A557 24p
L809 F1G1H1R0A480 1p
(OTHERS)
MIC100 L0CBAY000053 MICROPHONE
E101 L5DYBYY00043 LIQUID CRYSTAL DISPLAY
E102 PNHX1569Z COVER, DIFFUSION SHEET
E103 PNHX1518Z COVER, LCD SHEET
E104 PNHR1587Z TRANSPARENT PLATE, LCD PMMA-HB
E105 PNHR1586Z GUIDE, LCD ABS-HB
E106 PQHG10729Z RUBBER PARTS, RECEIVER
E107 PNVE1002Z BATTERY TERMINAL ABS-HB
CN4 K2HD103D0001 JACK
F1 K5H252Y00002 FUSE
X1 H0J138500003 CRYSTALOSCILLATOR (*2) S
Safety Ref.
No. Part No. Part Name & Description Remarks
(LED)
WLED B3AFB0000370 LED
Safety Ref.
No. Part No. Part Name & Description Remarks

10
KX-TG294SK/KX-TGA470CM
1.5.3. Charger Unit
1.5.3.1. Cabinet and Electrical Parts
1.5.3.2. Main P.C. Board Parts
1.5.4. Accessories and Packing Materials
Note:
(*1) You can download and refer to the Operating
Instructions (Instruction book) on TSN Server.
1.5.5. Screws
1.5.6. Fixtures and Tools
YANI
KXTG294SK
KXTGA470M
Safety Ref.
No. Part No. Part Name & Description Remarks
200 PNLC1029ZM CHARGER UNIT ASS'Y
without NAME PLATE
(RTL)
200-1 PNKM1258Y4 CABINET BODY PS-HB
200-2 PNJT1105Z CHARGE TERMINAL
200-3 PNKF1150Z1 CABINET COVER PS-HB
200-4 PQHA10023Z RUBBER PARTS, FOOT
CUSHION
201 PNGT6446Z NAME PLATE
Safety Ref.
No. Part No. Part Name & Description Remarks
PCB200 PNWPTGA470CH MAIN P.C.BOARD ASS'Y
(RTL)
(DIODE)
D1 B0ECKM000008 DIODE(SI)
(JACK)
J1 K2ECYB000001 JACK
(RESISTORS)
R1 ERJ14YJ1R0U 1
R2 ERJ14YJ1R0U 1
(FUSE)
F1 K5H302Y00003 FUSE
Safety Ref.
No. Part No. Part Name & Description Remarks
A1 PNLV226Z AC ADAPTOR
A2 PQJA10075Z CORD, TELEPHONE
A3 PNQX5106Y INSTRUCTIONBOOK(*1)
A4 PNQW3019Y LEAFLET, QUICK GUIDE
A5 PNQW2611Z LEAFLET,REPEATER APPEAL
A6 PNKE1132Z1 HANGER, BELT CLIP ABS-HB
A7 PNKL1001Y1 STAND, WALL MOUNT ABS-HB
Safety Ref.
No. Part No. Part Name & Description Remarks
A XTB26+8GFJ TAPPING SCREW
B XTB2+8GFJ TAPPING SCREW
Safety Ref.
No. Part No. Part Name & Description Remarks
PQZZ1CD300E JIG CABLE
PNZZTG7741M BATCH FILE CD-ROM
PQZZ430PIR TIP OF SOLDERING IRON
PQZZ430PRB RUBBER OF SOLDERING IRON

© Panasonic System Networks Co., Ltd. 2014
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41401277SE
F13
Telephone Equipment
Model No. KX-TG294SK
KX-TGA470M
Link-to-Cell Cellular Convergence
Solution
M: Metallic Grey Version
(for U.S.A.)
TABLE OF CONTENTS PAGE
1 REPLACEMENT PARTS LIST--------------------------------- 2
1.1. REFERENCE CHART------------------------------------ 2
1.2. ORIGINAL AND NEW PARTS
COMPARISON LISTS------------------------------------ 2
Supplement-2
Please file and use this supplement manual together with the service manual for Model No. KX-TG7731S,
KX-TG7732S, KX-TG7733S, KX-TGA470S, Order No. KM41201532CE and the supplement-1 for Model
No.KX-TG294SK/KX-TGA470M, Order No. KM41303259SE.

2
KX-TG294SK/KX-TGA470M
1 REPLACEMENT PARTS LIST
1.1. REFERENCE CHART
1.2. ORIGINAL AND NEW PARTS COMPARISON LISTS
OY
KXTG294SK
KXTGA470M
Reason for Change
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS
COMPARISON LISTS.
1. Improve performance Remarks:
*m : Discontinued (To be replaced with a new part)
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
Ref. No. Part No. Part Name & Description Pcs/
Set Remarks Notes Time of Change
Original (Old) New (Suffix)
Cabinet and Electrical Parts (Base Unit)
20 PNGT6445Y PNGT7734Y NAME PLATE 1 *m 8 V ---

© Panasonic System Networks Co., Ltd. 2012
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41201532CE
F13
Telephone Equipment
Model No. KX-TG7731S
KX-TG7732S
KX-TG7733S
KX-TGA470S
Link-to-Cell Cellular Convergence
Solution
S: Sliver Version
(for U.S.A.)
(Handset)
KX-TGA470S KX-TG7731S
(Base Unit)
(Charger Unit)
Model No
Base Unit Handset Charger Unit Expandable
KX-TG7731
1 (TG7731) 1 (TGA470) Up to 6
KX-TG7732
1 (TG7731) 2 (TGA470) 1 Up to 6
KX-TG7733
1 (TG7731) 3 (TGA470) 2 Up to 6
KX-TGA470*
1 (TGA470) 1
Configuration for each model
*KX-TGA470 is also an optional accessory, which contains a
handset and a charger.

2
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general
public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting
to service a product. Products powered by electricity should be serviced or repaired only by experienced professional
technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone
else could result in serious injury or death.
IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by
in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that
these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT INFORMATION ABOUT LEAD FREE, (PbF), SOLDERING
If lead free solder was used in the manufacture of this product, the printed circuit boards will be marked PbF.
Standard leaded, (Pb), solder can be used as usual on boards without the PbF mark.
When this mark does appear, please read and follow the special instructions described in this manual on the
use of PbF and how it might be permissible to use Pb solder during service and repair work.
LWhen you note the serial number, write down all 11 digits. The serial number may be found on the bottom of the unit.
LThe illustrations in this Service Manual may vary slightly from the actual product.

3
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 4
1.1. For Service Technicians --------------------------------- 4
2 Warning-------------------------------------------------------------- 4
2.1. Battery Caution--------------------------------------------- 4
2.2. About Lead Free Solder (PbF: Pb free)-------------- 5
2.3. Discarding of P. C. Board-------------------------------- 5
3 Specifications ----------------------------------------------------- 6
4 Technical Descriptions----------------------------------------- 7
4.1. Circuit Configuration of TG773x Series
Phones------------------------------------------------------- 7
4.2. US-DECT Description------------------------------------ 8
4.3. Block Diagram (Base Unit_Main)---------------------10
4.4. Tel Interface Circuit---------------------------------------11
4.5. Block Diagram (Base Unit_RF Part)-----------------12
4.6. Circuit Operation (Base Unit)--------------------------13
4.7. Block Diagram (Handset)-------------------------------20
4.8. Block Diagram (Handset_RF Part)-------------------21
4.9. Circuit Operation (Handset)----------------------------22
4.10. Circuit Operation (Charger Unit)----------------------24
4.11. Signal Route-----------------------------------------------25
5 Location of Controls and Components------------------27
6 Installation Instructions---------------------------------------27
7 Operating Instructions-----------------------------------------27
8 Test Mode ----------------------------------------------------------28
8.1. Engineering Mode----------------------------------------28
9 Service Mode -----------------------------------------------------32
9.1. How to Clear User Setting (Handset Only)---------32
10 Troubleshooting Guide----------------------------------------33
10.1. Troubleshooting Flowchart-----------------------------33
11 Disassembly and Assembly Instructions ---------------49
11.1. Disassembly Instructions-------------------------------49
11.2. How to Replace the Base Unit LCD -----------------53
11.3. How to Replace the Handset LCD-------------------55
12 Measurements and Adjustments---------------------------56
12.1. Equipment Required-------------------------------------56
12.2. The Setting Method of JIG -----------------------------56
12.3. Adjustment Standard (Base Unit)---------------------60
12.4. Adjustment Standard (Charger Unit)-----------------61
12.5. Adjustment Standard (Handset) ----------------------62
12.6. Things to Do after Replacing IC or X'tal ------------63
12.7. Frequency Table------------------------------------------65
12.8. Bluetooth Frequency Table-----------------------------66
13 Miscellaneous ----------------------------------------------------67
13.1. How to Replace the LLP (Leadless Leadframe
Package) IC------------------------------------------------67
13.2. How to Replace the Flat Package IC----------------69
13.3. Terminal Guide of the ICs, Transistors and
Diodes-------------------------------------------------------71
14 Schematic Diagram---------------------------------------------72
14.1. For Schematic Diagram---------------------------------72
14.2. Schematic Diagram (Base Unit_Main)--------------74
14.3. Schematic Diagram (Base Unit_RF)-----------------76
14.4. Schematic Diagram (Base Unit_Operation) -------77
14.5. Schematic Diagram (Handset_Main)----------------78
14.6. Schematic Diagram (Charger Unit) -----------------80
15 Printed Circuit Board-------------------------------------------81
15.1. Circuit Board (Base Unit_Main)-----------------------81
15.2. Circuit Board (Base Unit_Operation) ----------------83
15.3. Circuit Board (Handset_Main) ------------------------ 85
15.4. Circuit Board (Charger Unit)---------------------------87
16 Exploded View and Replacement Parts List----------- 88
16.1. Cabinet and Electrical Parts (Base Unit)-----------88
16.2. Cabinet and Electrical Parts (Handset)------------- 89
16.3. Cabinet and Electrical Parts (Charger Unit)-------90
16.4. Accessories and Packing Materials -----------------91
16.5. Replacement Parts List---------------------------------95

4
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
1 Safety Precautions
1.1. For Service Technicians
•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.
When repairing, the following precautions will help prevent recurring malfunctions.
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.
2Warning
2.1. Battery Caution
Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions.
Attention:
A nickel metal hydride battery that is recyclable powers the product you have purchased.
Please call 1-800-8-BATTERY (1-800-822-8837) for information on how to recycle this battery.

5
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
2.2. About Lead Free Solder (PbF: Pb free)
Note:
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.
Caution
• 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).
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.
Component
Component
pin
Solder
Remove all of the
excess solder
(Slice View)
0.3 mm X 100 g 0.6 mm X 100 g 1.0 mm X 100 g

6
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
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 the condition.
•Analog telephone connection: Telephone Line
•Optional Headset: KX-TCA60, KX-TCA93, KX-TCA400, KX-TCA430
•Optional Range extender: KX-TGA405
Power source
Receiving Method
Oscillation Method
Detecting Method
Tolerance of OSC Frequency
Modulation Method
ID Code
Ringer Equivalence No. (REN)
Dialing Mode
Redial
Speed Dialer
Power Consumption
Operating Conditions
Dimensions (W x D x H)
Mass (Weight)
AC Adaptor
(PNLV226Z, 120 V AC, 60 Hz)
Super Heterodyne
PLL synthesizer
Quadrature Discriminator
10.368 MHz ±100 Hz
Frequency Modulation
40 bit
0.1B
Standby: Approx. 1.2 W
Maximum: Approx. 4.5 W
0 ˚C - 40 ˚C (32 ˚F – 104 ˚F)
20 % – 80 % relative air humidity
(dry)
Approx. 150 mm × 117 mm × 67 mm
Approx. 210 g
Rechargeable Ni-MH battery
AAA (R03) size (1.2 V 550 mAh)
Super Heterodyne
PLL synthesizer
Quadrature Discriminator
13.824 MHz ±100 Hz
Frequency Modulation
40 bit
Tone (DTMF)/Pulse
Up to 48 digits
Up to 24 digits (Phonebook)
11 days at Standby,
13 hours at Talk
0 ˚C - 40 ˚C (32 ˚F – 104 ˚F)
20 % – 80 % relative air humidity
(dry)
Approx. 54
mm × 34 mm × 174 mm
Approx. 150 g
Base Unit Handset Charger
AC Adaptor
(PNLV226Z, 120 V AC, 60 Hz)
Standby: Approx 0.1 W
Maximum: Approx 2.0 W
0 ˚C - 40 ˚C (32 ˚F – 104 ˚F)
20 % – 80 % relative air humidity
(dry)
Approx. 73 mm × 76 mm × 43 mm
Approx. 50 g
Duplex procedure:
TDMA (Time Division Multiple Access)
Channel spacing:
1.728MHz (DECT 6.0)
1.0MHz(Bluetooth)
Bit rate:
1.152Mbit/s (DECT 6.0)
1.0 Mbit/s (Bluetooth)
Modulation:
GFSK (Gaussian Frequency Shift Keying)
RF transmission power:
115 mW (max/DECT6.0)
Voice coding:
ADPCM 32 kbit/s (DECT 6.0)
Tone (DTMF)/Pulse
Up to 48 digits
CVSD/PCM 64kbit/s (Bluetooth)
PCM 64kbit/s(BT_IC)
■
■
■
■
■
■
■Standard:
DECT 6.0 (Digital Enhanced Cordless
Telecommunications 6.0)
■Number of channels:
60 Duplex Channels (DECT 6.0)
79 Duplex channels(Bluetooth)
Bluetooth wireless technology 2.0
■Frequency range:
1.92 GHz to 1.93 GHz (DECT 6.0)
2.402 GHz to 2.48 GHz (Bluetooth)

7
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
4 Technical Descriptions
4.1. Circuit Configuration of TG773x Series Phones
TG773x consists of DECT cordless telephone and Bluetooth Module.
Both voices of transmission and reception are transferred by PCM.
BBIC on DECT side controls the cordless telephone system, which makes control data communication with BT_IC on BT
Module in serial data.
DECT6.0 Bluetooth
Headset
Bluetooth Devices
Cellular Phone
(For Link to Cell
communication)
TGA470
Handset
PSTN DC
5.5V
BBIC
FLASH IC601
(TAM)
EEPROM IC611
(Data)
TEL I/F POWER
QSPI FLASH
IC502
(Program)
Main PCB
Audio signal
(PCM)
Control/Data
Bluetooth Bluetooth
signal
(UART) BT_Module
(IC721)
(IC501)
SPEAKER

8
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
4.2. US-DECT Description
The frequency range of 1.92 GHz-1.93 GHz is used. Transmitting and receiving carrier between base unit and handset is same
frequency. Refer to Frequency Table (P.65).
4.2.1. TDD Frame Format
4.2.2. TDMA system
This system is the cycles of 10 ms, and has 6 duplex paths, but maximum duplex communication path is 5 because of dummy
bearer use.
In 1 slot 417 µs, the 10 ms of voice data is transmitted.
•2 - Handsets Link
Traffic Bearer
A link is established between base unit and handset.
The state where duplex communication is performed.
Handset doesn't make up duplex in no free RF channels because of interference. (*1)
Dummy Bearer
Base unit sends Dummy-data to the all stand-by state handsets.
Handsets receive that data for synchronization and monitoring request from the base unit.
Base unit doesn't send Dummy bearer in no free RF channels because of interference. (*1)
Note:
(*1) It is a feature under FCC 15 regulation and for interference avoidance.
In the case of checking RF parts, it is better in least interference condition.
417 µs (available) 417 µs (blind)
5 ms 5 ms
Up Link ( Handset ->Base Unit ) Down Link ( Base Unit ->Handset )
DATA rate : 1.152 Mbps
RX1 RX2 RX3 RX4 RX5 RX6 TX1 TX2 TX3 TX4 TX5 TX6
RX1 RX2 RX3 RX4 RX5 RX6 TX1 TX2 TX3 TX4 TX5 TX6
TX RX
RXTX
Traffic Bearer Dummy bearer
Base unit
Handset 1
(Stand by)
Handset 2
(Link)
Handset 3
(Link)