Panasonic KX-DT346UA Service Manual ▷ View online
37
KX-DT346UA/KX-DT346UA-B
10.3. LCD
KX-DT346UA/KX-DT346UA-B LCD No.1
14
LCD_CS
D3.3V
DG
R620
33
DG
29
KEY1_2
R610
1M
3
GND
CN604
1
LCD_CS
2
LCD_RES
3
LCD_A0/LCD_MODEL_CODE
4
LCD_SCK
5
LCD_DATA
6
VDD
7
VDD
8
VSS
9
-1.2V
10
-1.2V
11
VOUT
12
CAP3-
13
CAP1+
14
CAP1-
15
CAP2-
16
CAP2+
17
V1
18
V2
19
V3
20
V4
21
V5
22
MODEL_CODE
R618
33K
2
VDD
19
UART_CTS
C613
Z10
C603
Z2.2
9
-1.2V
6
MW_R
12
LCD_A0/LCD_MODEL_CODE
D3.3V
C615
Z1
C602
Z2.2
R617
1M
4
GND
C610
Z2.2
30
BK_LIT
V5
D3.3V
C612
100p
11
LCD_SCK
18
PCMSYNC
Q601
E
C
B
C607
Z1
26
PIO1
28
KEY3_4
R614
NC
C608
Z1
D3.3V
DG
D3.3V
R625
0
R609
1M
R615
33k
DG
7
MW_COM
13
LCD_RES
24
PIO2
C609
25VZ1
R611
NC
R613
33k
D3.3V
21
UART_RX
DG
8
V5
17
PCMOUT
5
MW_G
10
LCD_DATA
C604
Z2.2
23
RESET
DG
25
PIO3
DG
15
PCMCLK
R616
1M
CN601
1
VDD
R619
33
C614
100/6.3V
DG
20
UART_RTS
R626
33K
D3.3V
27
PIO0
R624
0
16
PCMIN
C611
0.01
D3.3V
DG
C601
Z0.1
R612
NC
C605
Z1
C606
Z1
22
UART_TX
D3.3V
R630
120
LED601
MW
1
2
3
4
R607
120
LED603
MW
1
2
3
4
LED602
MW
1
2
3
4
R606
120
D3.3V
R603
47k
DG
R604
82k
D3.3V
R605
47k
DG
DG
R622
47k
R602
82k
R601
47k
DG
CN602
11
22
SW601
S1-1
SW607
S3-2
SW606
S2-2
SW603
S3-1
SW604
S4-1
SW608
S4-2
SW605
S1-2
SW602
S2-1
R628
33k
R632
33K
D3.3V
R621
33
R633 33K
D3.3V
DG
R623
15
R629
15
R631
15
DG
C617
0.01
C618
0.01
C616
0.01
R608
56
CN603
1
VDD
2
PIO0
3
PIO1
4
PIO6
5
PIO5
6
PIO4
7
PIO3
8
PIO2
9
USBD-
10
USBD+
11
RESET
12
UART_TX
13
UART_RX
14
UART_RTS
15
UART_CTS
16
PCM_SYNC
17
PCM_OUT
18
PCM_IN
19
PCM_CLK
20
GND
to Bluetooth
to LCD
LCD L:6 Line, H:3 Line
to BK_LIT
to Main
G
R
G
R
G
R
38
KX-DT346UA/KX-DT346UA-B
10.4. Waveform
39
KX-DT346UA/KX-DT346UA-B
40
KX-DT346UA/KX-DT346UA-B
11 Printed Circuit Board
11.1. Main Board
11.1.1. Component View
C39
1
R85
R82
C80
R92
4
1
5
C61
13
12
C68
OUT1
IC7
1
8
5
C91
C92
C95
C94
SP3-
SP3+
Q6
R76
C78
C84
SP1
SP2
5
MIC1
CN2
MIC2
C8
C29
A3.3V
R9
C116
C82
R84
C85
C115
R2
R1
C4
CN3
PbF
PSUP1698Z
A
CN8
1
R65
C67
1
C113
JK2
JK1
L-D
H-D
T2
C31
Q4
Q3
R34
L
1
4
IC8
C64
Q7
C77
CN4
R115
R68
R61
8
1
R93
IC12
R94
R74
R79
C50
C49
R62
R69
C22
C21
C23
R22
R23
C24
DA2
Q2
C26
R70
C69
C70
R71
R73
C112
C34
31
R54
R53
RST2
RST1
R52
30
C32
Q13
Q12
Q11
OSR
OSX
OCK
TXD
SCK
CS1
CN5
IN3
R111
IN4
VSS
IN2
CN6
CS2
RXD
RA5
OSY
R55
C25
R24
C13
C27
R26 C28
C54
R72
RA4
R131
R46
C33
Q18
Q17
Q16
Q15
Q14
C52
R25
R33
R32
C55
51
R36
C20
C19 R19
R16
R18
R17
R28
R27
R21
R49
R50
R48
R20
C35
C42
R51
R42
C37
R107
R108
81
C36
100
C38
C43
C103
C118
C104
C119
R56
R44
RA1
RA2
R43
C45 R45
C44
C46
1
IC3
17
16
C101
R104
R105
HOOK
RST
R102
1
64
C102
R110
R133
49
48
R112
R109
IC9
BL
DA3
C108
-1.2V
C105
V5
CN1
1
C121
C120
R114
33
D6
C106
C107
R113
RA6
D5
D4
D4
D3
R132
C109
MODE
VCC
R106
CN9
R103
IC1
1
IC2
R41
X1
C41
R37
R38
C53
R35
C97
C93
R90
R63
C62
R64
C51
IC6
C99
R91
C79
R87 R89
C89
C88
R88
C73 C74
C76
C71
R75
C72
R67
C66
R66
C65
C75
R83
R95
R80
R77
C98
R78
C87
AG1
R81
C81
C86
R57
R47
R134
C47
C111
C48 R86
C114
IC10
MIC3
Q5
R3
C2
L5
C10
8
4
V1
D1
C1
C7
C5 R6 R7
C6
L12
DG
D3.3V
R13
C18
C16
R121
R123 R122 R124 R125
R126
R127
R128 R129 R130
C17 R14
R15
C15 C14 R12 R11
C117
DA1
T1
Q1
A
H T R
5
IC5
C9
AG
D2
C3
R5
C11
C12
KX-DT346
UA/KX-DT346UA-B : Main Board Component View
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