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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