Sharp AL2020 - Operation Pwb (Al-2050;2060)

AL-2020/2035/2040/2050/2060 CIRCUIT DIAGRAM 14 - 30
4. OPERATION PWB (AL-2050/2060)
LCDRS# LCDDB7#
LCDDB4# LCDDB6# LCDRS# LCDE#
LCDE#
LCDDB7#
LCDDB4# LCDDB6#
LCDDB5#
LCDDB6 LCDDB7 LCDDB4
LCDDB5#
LCDDB5
5VEN
5VEN
3.3V
3.3V
5V
LED_V2
OP-CLK OP-DATA OP-LATCH
LED_V3 LED_V1 DATA1
LCDE
LCDRS
LCDDB[7..4]
LCDCONT
PSL
To LCD
FAXSCAN
COPY PRINT SPFL
HPL SJAL
BPL
CS1L CS2L
RPL
PSL
R333 100JR333 100J
TP14TP14
LTL-1LHG-002A
LED308
LTL-1LHG-002A
LED308
IC304 TB62725AF 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
TP1TP1
LTL-1LHG-002A
LED309
LTL-1LHG-002A
LED309
C323 open C323 open
Q307
KRC106S
Q307
KRC106S
1
2
3
TP3TP3
TP5TP5
R302 100JR302 100J
C329
100p
C329
100p
R305 0J R305 0J
R344 100J R344 100J
LTL-1LHG-002A LED311 LTL-1LHG-002A LED311
TP15TP15
TP6TP6
C330
100p
C330
100p
LTL-1LHG-002A
LED301
LTL-1LHG-002A
LED301
R332 100JR332 100J
LTL-1LHG-002A
LED306
LTL-1LHG-002A
LED306
TP2TP2
R335 0JR335 0J
C332
100p
C332
100p
R325 0J R325 0J
R304 100JR304 100J
R301 470JR301 470J
C322 0.1u C322 0.1u
LTL-1LHG-002A
LED310
LTL-1LHG-002A
LED310
R323 10KJ R323 10KJ
C306 1000p C306 1000p
OPEN
LED303
OPEN
LED303
R331 100JR331 100J
TP10TP10
LTL-1LHG-002A
LED302
LTL-1LHG-002A
LED302
IC301 GPM181C0 IC301 GPM181C0
GND
10
V5
9
VDD
8
RS
7
R/W
6
E
5
DB4
4
DB5
3
DB6
2
DB7
1
R327 820J R327 820J
C333 0.1uC333 0.1u
Q305 KRA225S Q305 KRA225S
3
2
1
TP9TP9
LTL-1LHG-002A
LED307
LTL-1LHG-002A
LED307
Q303 KRA225S
3
2
1
R306 OPEN R306 OPEN
TP13TP13
C331
100p
C331
100p
R330 100JR330 100J
Q304 KRA225S
3
2
1
TP11TP11
LTL-1LHEE-002A
LED304
LTL-1LHEE-002A
LED304
LTL-1LHG-002A
LED305
LTL-1LHG-002A
LED305
TP8TP8
TP4TP4
R334 100JR334 100J
R324 0J R324 0J
C305 1000p C305 1000p
C327
100p
C327
100p
R303 100JR303 100J
LTL-1LHG-002A
LED314
LTL-1LHG-002A
LED314
C308 Open C308 Open
Q302
KRC106S
Q302
KRC106S
1
2
3
D304 ZENER_3.3V D304 ZENER_3.3V
R329 100JR329 100J
C307 open C307 open
R328 10kJ R328 10kJ
C328
100p
C328
100p
TP12TP12
C338 0.1uC338 0.1u
TP7TP7
R326
0J
R326
0J
A A
B B
C C
D D
E E
4 4 3 3
2 2 1 1
OPERATION PWB (LED/LCD section) (AL-2050/2060) 1/3