Operation Board (Pcb3) - Panasonic KX-FHD333BR Service Manual

16.3. OPERATION BOARD (PCB3)

3.3V
TO DIGITAL
0V
RESET 10
KSCLK 9
KTXD 8
KRXD 7
KLATCH 6
KSTART 5
DG 4
+5V 3
AG 2
+5V
MICIN 1
CN301
TO DIGITAL
CN303
MICIN 1
2
GND 3
Not used
FAX/START
1
/SET
SW301 SW304
MONITOR 4
SW302 SW305
SW306
(-) FLASH
SW303 SW307
7
SW308
Not used
C353
J330P
R355
560K
Q301
R353
22K
5V
0V
2 3 COPY RECORD HELP
SW309 SW314 SW319 SW324 SW328
5 6 AUTO ANSWER
STOP ERASE
SW310 SW315 SW320 SW325 SW329
0 # PREV
ONE TOUCH 5
MENU
SW311 SW316 SW321 SW326 SW330
REDIAL/
MUTE NEXT
PAUSE LOWER
SW312 SW317 SW322 SW331
PLAY
(+)
8 9 MESSAGE
ONE TOUCH 4
SW313 SW318 SW323 SW327 SW332
+5V
TO MIC
C352
MIC (+)
K0.0068u
MIC (-)
+5V
IC301
30 17
RESET VDD
31 40
SCLK VDD
32 19
RXD XL13
R302 270 33 22
TXD LED1
34 23
LATCH RS
35 24
START R/W
42 25
KIN0 E
3 26
KIN1 D4
7 27
KIN2 D5
8 28
KIN3 D6
11 29
KIN4 D7
12 36
KIN5 LED2
13 37
KIN6 LED3
14 38
KIN7 LED4
43 41
KSL0 LED5
44 2
COLLER-ID
KSL1 LED6
1 5
KSL2 XL8
10 6
KSL3 XL9
4 15
SW333
KSL4 XL12
9 16
XL10 XL11
18 20
GND XL14
39 21
JUNK FAX
GND XL15
PROHIBITOR
SW334 5V
0V
ONE TOUCH 2
SW335
+5V
ONE TOUCH 3
SW336
SW353
R317
ONE TOUCH 1 3 1
4 2
100
SW337
DOCUMENT
SET SW
+5V
R318
5V
4.7
TO LCD
0V
1 GND
2 +5VLCD
VO
3
4 RS
5 R/W
E
6
7 D0
8 D1
D2
9
D3
10
CN302
LED ON : 0V
LED OFF : 5V
+5V
OPEN LCR
LED302
R313
220
+5V
NEW MESSAGES
LED301
R312
270
Not used
+5V
SW352
R315
3 1
4 2
100
DOCUMENT
TOP SW
KX-FHD333BR : OPERATION BOARD (PCB3)
TO COB