Panasonic KX-FT901CX-B

17.3. OPERATION BOARD (PCB3)
( )
SW44
1 23
4
C4
Z0.1u
( )
R11 330
R4
( )
NC
R8
( )
NC
+5V
0R44
+5V
R24 0
0R46
C15
Z0.1u
+5V
R15
( )
NC
R14
560
( )
K330pC6
C12
( )
NC
0R48
C3
Z0.1u
R25
4.7
+5V
( )
Q1
NC
+5V
R5
( )
NC
R12 56K
R9
100
C18
Z0.22u
C11
( )
NC
+5V
C16
Z0.1u
C13
( )
NC
FG
R7
( )
NC
PS1
A K
C E
C5
6.3V220u
0R45
C19
K0.01u
R6
( )
NC
R13
27K
[4]
+5V
C9
K330p
( )
C20 J120p
+5V
C10
( )
NC
CN2
1DG
2 +5V
3V0
4RS
5RWB
6E
7D4
8D5
9D6
10 D7
R10
4.7K
+5V
IC1
1 KSL2
2 LED6
3 KIN1
4 LED7
5 XLED8
6 XLED9
7 KIN2
8 KIN3
9 XLED10
10 KSL3
11 KIN4
12KIN5 13KIN6 14KIN7 15XLED12 16XLED11 17VDD-17 18VSS-18 19XLED13 20XLED14 21XLED15 22LED1
23RS
24RWB
25E
26D4
27D5
28D6
29D7
30RESET
31SCLK
32RXD
33TXD
34 LATCH 35 START 36 LED2 37 LED3 38 LED4 39 VSS-39 40 VDD-40
41 LED5 42 KIN0 43 KSL0
44 KSL1
C14
K0.01u
R3
( )
NC
C17
Z0.22u
( )
+5V
SW1
LOWER
SW2
STOP
SW3
COPY
SW4
DOWN/VOL -
SW5
FAX/START/SET
SW6
No 4/ No 15
SW7
No 7/ No 18
SW8
No 10/ No 21
SW9
No 8/ No 19
SW10
No 2/ No 13
( )
SW11
RECORD
NC
( )
SW12
PLAY
NC
SW13
MENU
SW14
< PREV
SW15
No 6/ No 17
SW16
No 5/ No 16
( )
SW17
ERASE
NC
SW18
SP-PHONE/MONITOR
SW19
UP/VOL +
SW20
No 3/ No 14
SW21
8
SW22
5
SW23
REDIAL/PAUSE
SW24
2
SW25
0
SW26
9
SW27
6
SW28
MUTE
SW29
3
SW30
#
SW31
7
SW32
4
SW33
FLASH
SW34
1
SW35
*
SW36
No 1/ No 12
SW37
No 11/ No 22
SW38
NEXT >
SW39
No 9/ No 20
SW40 HELP
SW41
CALLER-ID
SW42
RECEIVE MODE
K0.01uC22
K0.01uC23
+5V
4.7KR50
4.7KR52
+5V
100
R49
100
R51
MIC+
MIC-
CN1
1TxD 2Latch 3RxD 4Start 5SCLK 6DG 7Reset 8+5V 9AG
10NC 11MICIN 12FG
C8
J120p
0R47
C7
K330p
0R53
R17
270
LED1
KSL0
KSL1
KSL2
KSL4
KSL3
KSL0
KIN0
KSL3
KIN7
KIN6
KSL4 KSL2
KIN5
KIN4
KIN3
KIN2
KIN1
KIN0
KIN1
KIN2
KIN3
KIN4
KIN5
KIN6
KIN7
KSL1KSL1
DOCUMENT TOP SW
DOCUMENT SET SW
TO LCD
← →
TO DIGITAL
TO MIC
0V
3.3V
+2.5V
5V 0V
PAPER 5V
0V
NO PAPER 5V
LCD CONTRAST
PAPER 0V
NO PAPER 5V
LED ON : 0V
OFF : 5V
KX-FT901/903CX-B/W/S : OPERATION BOARD (PCB3)
KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S
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