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
5V
EN
5V
EN
3.3V
3.3V
5V
LED_V
2
OP-CLK
OP-DA
T
A
OP-LA
T
CH
LED_V
3
LED_V
1
DA
T
A
1
LCDE
LCDRS
LCDDB[7..4]
LCDCONT
PSL
To
LCD
FAX
SCAN
COPY
SPFL
HPL
SJAL
BPL
CS1L
CS2L
RPL
PSL
R333
1
00J
R333
1
00J
TP14
TP14
LT
L-1LHG-002A
LED308
LT
L-1LHG-002A
LED308
IC
304
T
B
62725A
F
IC
304
T
B
62725A
F
/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
TP
1
TP
1
LT
L-1LHG-002A
LED30
9
LT
L-1LHG-002A
LED30
9
C323
open
C323
open
Q307
KRC106S
Q307
KRC106S
1
2
3
TP
3
TP
3
TP5
TP5
R302
100J
R302
100J
C329
100p
C329
100p
R305
0J
R305
0J
R344
100J
R344
100J
LT
L-1LHG-002A
LED311
LT
L-1LHG-002A
LED311
TP
1
5
TP
1
5
TP6
TP6
C330
100p
C330
100p
LT
L-1LHG-002A
LED301
LT
L-1LHG-002A
LED301
R332
100J
R332
100J
LT
L-1LHG-002A
LED306
LT
L-1LHG-002A
LED306
TP
2
TP
2
R335
0J
R335
0J
C332
100p
C332
100p
R325
0J
R325
0J
R304
100J
R304
100J
R301
470J
R301
470J
C322
0.1u
C322
0.1u
LT
L-1LHG-002A
LED310
LT
L-1LHG-002A
LED310
R323
10KJ
R323
10KJ
C306
1000p
C306
1000p
OPEN
LED303
OPEN
LED303
R331
100J
R331
100J
TP10
TP10
LT
L-1LHG-002A
LED302
LT
L-1LHG-002A
LED302
IC
3
0
1
GPM181C0
IC
3
0
1
GPM181C0
GN
D
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
0.1u
C333
0.1u
Q305
KRA
2
25S
Q305
KRA
2
25S
3
2
1
TP9
TP9
LT
L-1LHG-002A
LED307
LT
L-1LHG-002A
LED307
Q303
KRA
2
25S
3
2
1
R306
OPEN
R306
OPEN
TP13
TP13
C331
100p
C331
100p
R330
100J
R330
100J
Q304
KRA
2
25S
3
2
1
TP
1
1
TP
1
1
LT
L-1LHEE-002A
LED304
LT
L-1LHEE-002A
LED304
LT
L-1LHG-002A
LED305
LT
L-1LHG-002A
LED305
TP8
TP8
TP
4
TP
4
R334
100J
R334
100J
R324
0J
R324
0J
C305
1000p
C305
1000p
C327
100p
C327
100p
R303
100J
R303
100J
LT
L-1LHG-002A
LED314
LT
L-1LHG-002A
LED314
C308
Open
C308
Open
Q302
KRC106S
Q302
KRC106S
1
2
3
D304
ZENER_3.3V
D304
ZENER_3.3V
R32
9
100J
R32
9
100J
C307
open
C307
open
R328
10kJ
R328
10kJ
C328
100p
C328
100p
TP12
TP12
C338
0.1u
C338
0.1u
TP7
TP7
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
Summary of Contents for AL-2020
Page 217: ...Memo ...