Sharp AL-1651CS Wartungshandbuch PDF herunterladen (Seite 139)

AL-1651CS CIRCUIT DIAGRAM 13 - 26

2. OPERATION PWB

OPERATION PWB (LED/LCD Section)

C332

100p

R333 100J

R334 100J

PML

LED311

R326

0J

C331

100p

Q305

KRA225S

3

2

1

C327

100p

C328

100p

C333

0.1u

READY

LED310

Q301

KRC106S

1

2

3

C305

1000p

R331 100J

C329

100p

C330

100p

IC304

TB62725AF

/OUT2

7

/OUT3

8

/OUT4

9

/OUT5

10

/OUT6

11

/OUT1

6

/OUT0

5

VCC

16

/ENABLE

13

/LATCH

4

S-IN

2

CLOCK

3

S-OUT

14

GND

1

/OUT7

12

R-EXT

15

R306

OPEN

R302 100J

PRINT

LED303

C322

0.1u

R325

0J

R328

10kJ

R327

820J

C307

open

R301 470J

R329 100J

SPON

LED308

R304 100J

1CAS

LED306

Q302

KRC106S

1

2

3

R332 100J

C308

Open

IC301

GPM181C0

GND

10

V5

9

VDD

8

RS

7

R/W

6

E

5

DB4

4

DB5

3

DB6

2

DB7

1

R324

0J

2CAS

LED305

Q303

KRA225S

3

2

1

R303 100J

COPY

LED304

ALM

LED307

C323

open

FAX

LED301

Q304

KRA225S

3

2

1

MB

LED309

R330 100J

R335

560J

C306

1000p

SCAN

LED302

R305

0J

R323

10KJ

LCDRS#

LCDDB7#

LCDDB4#

LCDDB6#

LCDRS#

LCDE#

LCDE#

LCDDB7#

LCDDB4#

LCDDB6#

LCDDB5#

LCDDB6

LCDDB7

LCDDB4

LCDDB5#

LCDDB5

3.3V

5VEN

3.3V

3.3V

5V

PSL

LED_V2

OP-CLK

OP-DATA

OP-LATCH

LED_V3

LED_V1

DATA1

LCDE

LCDRS

LCDDB[7..4]

Pin Holes x 10

To L CD

=(1.15/820)x14.9=20.9mA

Iout=(1.15/Rext)x14.9 [A]

1/3

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

1 2 ... 134 135 136 137 138 139 140 141 142 143 144 ... 159 160

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