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TO DIGITAL
RESET 10 KSCLK KTXD KRXD KLATCH KSTART DG +5V AG MICIN 9 8 7
3.3V 0V
5V
Z0.1u
+5V R318 C314
0V
5V 0V
R304 ( ) NC
4.7
TO LCD
1 GND 2 +5VLCD 3 VO
R305
6 5 C306 J100P C308 J330P C304 Z0.1u NC ) 4 6.3V 100u C302 Z0.1u 3 2 1 C303 C309 J330P +5V
2.2K
4 RS 5 R/W 6 E 7 D0
TO COB
NC
+5V
C305 (
R320
8 D1
0
C311
C310
2.2K
Z0.1u
Z0.1u
18K
9 D2 10 D3
R321
)
CN301 TO DIGITAL
CN303
0
R306
R307
R303
R322
CN302
R323 0 R324 0 R325 0 R326 0 0
IC301
MICIN 1 2 GND 3 R302 270
30 31 32 33 34 35 42 3 7 8 11 12 13 14 43 44 1 10 4 9 18 39
RESET SCLK RXD TXD LATCH START KIN0 KIN1 KIN2 KIN3 KIN4 KIN5 KIN6 KIN7 KSL0 KSL1 KSL2 KSL3 KSL4 XL10 GND GND VDD VDD XL13 LED1 RS R/W E D4 D5 D6 D7 LED2 LED3 LED4 LED5 LED6 XL8 XL9 XL12 XL11 XL14 XL15
Not used
FAX/START /SET SW301
1 SW304
2 SW309
3 SW314
COPY SW319
RECORD SW324
HELP SW328
SEARCH SW333 PRINT REPORT SW334
17 40 19 22 23 24 25 26 27 28 29 36 37 38 41 2 5 6 15 16 20 21
(
+5V R313 LED302
+5V R312 NEW MESSAGES LED301
MONITOR SW302
4 SW305
5 SW310
6 SW315
STOP SW320
ERASE SW325
AUTO ANSWER
SW329
5V 0V
Not used +5V
0 SW306 SW311 REDIAL/ PAUSE SW312
# SW316
PREV SW321
MENU SW326
ONE TOUCH 5
ONE TOUCH 2
SW330
SW335
+5V
4.7K
R316
SW303
SW307
SW317
SW322
PLAY MESSAGE
SW331
SW336
7 SW308
8 SW313
9 SW318
(+) SW327
ONE TOUCH 4 ONE TOUCH 1
R317 K0.01u C317 100
SW353
3 4 1 2
R314 R315 K0.01u C316 100
4.7K SW352
3 4 1 2
(-)
FLASH
MUTE
NEXT
LOWER
ONE TOUCH 3
SW323
SW332
SW337
DOCUMENT SET SW
DOCUMENT TOP SW
R351
Not used
R356 3.3K
+5V 330 6.3V 100u TO MIC R353 C352 K0.01u NC C351 D301 ( MIC (+) MIC (-) 22K K0.0068u 6.8K C354
C353 J330P R355 Q301 560K
R354
150
R352 )
KX-FP343CE : OPERATION BOARD (PCB3)