Panasonic KX-TG9331BXT Service Manual page 85

(1)
(2)
(3)
(4)
C508
6.3V 10uF
R508 10
C503 K1.0
(5)
C594 NC
C526
K0.1
R505 NC
R506 NC
R507 NC
R509 100k
RX
TX
UART
R543 270k
(6)
C373 330u 6.3
C372 K1.0
(7)
(8)
(9)
(10)
(11)
*R436 1k
*R431 NC
*R433 1k *C433
*R434
R417 390
PDN
AVR, PDN_IC
IC371
4
5
NC L511
2.7V
DC/DC step-up circuit
3.0V 2.6~3.0V
IC372
L373
10uH
K A
3 4
VBAT1 VBAT2
S NC
2 5
F301
5.6n
G D
1 6
VSS1
BATTP
1 5
EXT
VOUT
2
BATTN
VDD
3 4
VSS
ON/*OFF
3.1V
IC373
Charging detection
KX-TGA931/930 SCHEMATIC DIAGRAM (Handset_Main)
SPPP
L431
L432
*L434
*C435
10uF
RA403
3
4
68
*R435 NC
K6800P
2.2k
C414
K6800P
RA401
3 2
4 1
1k
C415
RA402 K6800P
3 2
4 1
2.2k
2.0V_Reset
R374 220k
ONOFF
NC
3
VSS
2
VIN
VOUT
1
2.7V
3.1V
D361
R370
K A
1.2
R368
10k
VSS2
Q364
R369 C
B
33k
E
85
KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT
TEST SIGNAL
FREQUENCY: 1kHz
Voice circuit
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
HEADSET_JACK
Headset RX
170mVp-p/150
(Vol. Max)
SPP
RECEIVER
Handset RX
(MIC Mute: ON)
1
+
2
2
- 590mVp-p/150
1
(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
1 4
OUT 30mVp-p/600
VSS
2 3
VDD
NC
Charging control circuit
R366 3.3k
L351
Q361
R361 47k
L352
R363 47k
Q362
C Q531
B
C R531 NC
B
E
E
NC: No Components
IN
IN
IN
NC
CHG1
NC
CHG2