Panasonic KX-TG294SK Service Manual page 91

R1
X1
(1) 13.824M
NC
GND
(2)
GND
Speakerphone_SP+
(3)
(4)
Speakerphone_SP-
(5)
(6)
R22 C14
(7)
3.3k 0.039u
(8)
GNDA GND
R23 MIC POWER
(9)
390
HEADSET_DET
(10)
GND
(11)
(12)
RF BLOCK
ANT-Short-GND
ANT-Short
W 0.15mm
ANT-Pattern
L 20mm
3rd layer
GND
GND
C803
1.3p
GND
GND
W 0.2mm
L 3.8mm
GND GND
1st layer
W 0.15mm
L 6.2mm
1st layer
RECEIVER- C16 22u
RECEIVER+
L9
0
GNDA
Handset RX
GNDA
MIC+
R73 33
MIC+
1
C28
R74 33
NC
2
MIC-
MIC-
Handset TX
SP-phone TX
GND GND
GNDA
R807
470
W 0.15mm/L 7mm
GND
W 0.5mm /L 5mm
C826
1st layer
10p
GND
2
C812
L809
3
1
8.2n
1p
DA801
W 0.15mm
L 20mm
GND GND
3rd layer
W 0.2mm
R806
L 10.0mm
470
1st layer GND
GND
GND
GND GND
SP-phone RX
L4 180n
+
SP-PHONE_SPEAKER
L5 NC
-
GND GND GND GND
SPP
C42
K1000p
+
RECEIVER
-
SPM
GND GND
GND GND
L1
1
R80 100
L7 2
3
4
5
L75
L8 10
GNDA
GNDA1
GNDA GNDA GNDA1 GNDA1 GNDA
MIC AP1
*RF-SHIELD
NC
GND
KX-TGA470 SCHEMATIC DIAGRAM (Handset_Main)
79
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
RXON
RXn
RX_RF
RXp
TXp
TX_RF
TXn
VBAT
TXON
CN4
Headset Jack
L10
GNDA1
NC: No Components