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+5V
4.7 R386
C366
(
R304
CN301
RESET 11 KSCLK 10
R378
0V
5V 0V
)
)
(
TO DIGITAL
LCD CONTRAST
R318
5V
C314
Z0.1u
+5V
)
)
TO LCD CN302
1 2 3 GND +5V V0 RS R/W E D0 D1 D2
(
)
(
R305
680 R379
KTXD KRXD KLATCH KSTART
9 8 7 6 1 2 JOG1
4 5 6 7 8
(
TO COB
JOG1 5 JOG2 4
C360
C361
C362
J100p
C305
J330p
J330p
Z0.1u
C363
)
C304
C308
R319
+5V GND MICIN
3
3
JOG2
(
(
(
)
R302
2 1
(
+5V R377 27k
R320
(
) SW351 JOG DIAL )
C309
)
470 R376
)
)
)
)
GND
9
10 D3
(
(
11 D4 12 D5 13 D6 14 D7
470 R375
)
C365
C364
)
(
R384
Z0.1u
C311
(
(
(
C310
Z0.1u
+5V
)
R303
(
TO DIGITAL CN303
MICIN 1 2 GND 3
IC301
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 LED6 LED1 RS R/W E D4 D5 D6 D7 LED2 LED3 LED4 LED5 XL8 XL9 XL12 XL11 XL13 XL14 XL15 17 40 2 22 23 24 25 26 27 28 29 36 37 38 41 5 6 15 16 19 20 21
0V LED: ON 5V LED: OFF
(
JJ331
)
6.3V 100u
)
)
C359
C301
C358
)
C302
Z0.1u
C303
(
(
(
+5V
MENU
9
*
RECORD
0
ERASE
IN USE1
R310 LED301
SW301
SW306
SW311
SW316
SW321
SW326
SW331
(
R311 220
)
(
)
IN USE2
LED302
HELP
PRINT
5
4
6
PLAY MESSAGES
MUTE
NEW MESSAGES
R312 LED303 SW332 270
SW302
SW307
SW312
SW317
SW322
SW327
VOL+
COLLATE
2
1
RESOLUTION
CALLER ID
3
5V 0V
+5V +5V
SW303
SW308
SW313
SW318
SW323
SW328
SW333
VOL-
QUICK SCAN
)
4.7k R381
(
R380
R382
(
JJ332
AUTO ANSWER SEARCH 8 7 INTERCOM DIRECTORY PROGRAM #
)
R317 100 SW353
3 4 1 2
(
R315 100 C368
)
SW352
3 4 1 2
0
)
330
C367
K0.01u
K0.01u
R385
C317
C316
SW305
SW310
SW315
SW320
SW325
SW330
SW335
)
DOCUMENT TOP SW
DOCUMENT SET SW
(
IC302
6.3V 100u C357 Z0.1u C369
-2 1
8
2 3
R351
330
C355 R356
J180p 330k R355 22k C353 6.8k C352 R352
4
6.3V 100u
TO MIC MIC (+)
0
5
C351
)
C356
6 7
K0.015u
MIC (-) (
IC302
2.2k
-1
R357
Z0.1u R354
R353
C354
6.8k
12k
(
(
+5V
SW304
SW309
SW314
SW319
SW324
SW329
SW334
R316
R314
4.7k R383
)
COPY/START/SET
REDIAL/PAUSE
SP-PHONE
FLASH
STOP