Panasonic KX-TG9341T Service Manual page 85

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*R431 NC
C508
6.3V 10uF
R508 10
C503 K1.0
PDN
C594 NC
C526
K0.1
R505 NC
R506 NC
R507 NC
R509 100k
RX
TX
UART
NC L511
DC/DC step-up circuit
R543 270k
3.0V 2.6~3.0V
IC372
K A
3 4
S NC
2 5
C373 330u 6.3
G D
1 6
C372 K1.0
1 5
EXT
VOUT
2
VDD
3 4
VSS
ON/*OFF
3.1V
IC373
Charging detection
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KX-TG9341T/KX-TG9342T/KX-TG9343S/KX-TG9343T/KX-TG9344T/KX-TGA931S/KX-TGA931T
*R436 1k
L431
L432
*C435
10uF
*R435 NC
*R433 1k *C433 K6800P
*R434 2.2k
R417 390
C414
K6800P
RA401
3 2
1
4
1k
C415
RA402 K6800P
3 2
4 1
2.2k
AVR, PDN_IC
IC371
R374
ONOFF
NC
4 3
VSS
2
VIN
VOUT
5 1
2.7V
3.1V
2.7V
L373
D361
R370
10uH
K
VBAT1 VBAT2 1.2
F301
5.6n
R368
VSS1 VSS2
BATTP
BATTN
Q364
R369
B
33k
KX-TGA931 SCHEMATIC DIAGRAM (Handset_Main)
85
TEST SIGNAL
FREQUENCY: 1kHz
Voice circuit
SPPP SPPN
SP phone RX
(MIC Mute: ON)
1
+
1.8Vp-p/8
2
-
(Vol. Max)
SP_PHONE
Headset TX
50mVp-p/600
*CN431
NC
1
NC
2
3
4
5
*L434
HEADSET_JACK
Headset RX
170mVp-p/150
(Vol. Max)
SPP
RECEIVER
Handset RX
RA403
(MIC Mute: ON)
1
+
3 2
2 590mVp-p/150
-
4 1
68
(Vol. Max)
SPM
MICM MICM-1
MIC-TP
2
1
MIC
MIC-TP
MICP MICP-1
Handset TX
88mVp-p/600
IC374
SP phone TX
2.0V_Reset
220k
1 4 30mVp-p/600
OUT
VSS
2 3
VDD
NC
Charging control circuit
R366 3.3k
L351
A
Q361
R361 47k
10k
L352
R363 47k
Q362
C C Q531
B
C
R531 NC
B
E E
E
NC: No Components
IN
IN
IN
NC
CHG1
NC
CHG2