L407 100
C426
33/16
R412
152
R411 105
C423
200
C424
300
C430
104
C431
104
C429 104
C428 10/16
C432
22/6.3
R414 103
L408 100
C434
104
C433 104
C436 104
C435 10/16
C425 104
R422 153
R423 OPEN
R472
0R00
R467 OPEN
C440 OPEN
C439
104
R468
0R00
R425 OPEN
1 NC
2 R
3 REB
4 DE
5 D
6 GND
7 GND
14
VCC
13
NC
12
A
11
B
10
Z
9
Y
8
NC
IC417
R453 153
R416 OPEN
R417
222
R420 OPEN
C438 101
C437
104
L409 100
R419
222
R418 OPEN
R428 154
C442 104
C441
104
R421 153
5
1
2
3
4
IC412
C422 104
6
2
8
4
IC414
1
7
IC414
3
5
IC414
L410
L411
L412
L413
L414
L415
L416
L417
L418
L419
L420
L421
TP11
R434
0R00
R432 103
R433 103
E6
R11 OPEN
R12 OPEN
E5
E3
E2
E7
E1
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
VCC
G
B1
B2
B3
B4
B5
B6
B7
B8
IC425
R448
100
R447
100
R446
100
R445
100
R444
100
R443
100
R442
100
R441
100
R440
100
C448 104
4
5
6
IC426
9
10
8
IC426
C449
104
6
1
2
IC427
R439 103
3
7
5
IC427
8
V
4
G
IC427
C450 104
R431
103
12
13
11
IC426
R435
0R00
R436
0R00
R410 103
R457 363
R454
153
R455
153
R456
153
R458 363
C453 101
C452 101
R460
0R00
R461
0R00
R462 OPEN
R463 OPEN
C454 104
R464 303
R465 153
R466 153
5
1
2
3
4
IC429
C456 104
R427 OPEN
R469
OPEN
R470 OPEN
R471 OPEN
C457 101
C458 101
R424 682
R426
682
R473
0R00
R474
0R00
R429
0R00
R476
0R00
R415
0R00
C459
104
R478 103
R482 0R00
R484 103
R479
0R00
R480 OPEN
R481
OPEN
5
1
2
3
4
IC432
GND
R485
0R00
R486
OPEN
R487 OPEN
TH401 050
1 NC
2 R
3 REB
4 DE
5 D
6 GND
7 GND
14
VCC
13
NC
12
A
11
B
10
Z
9
Y
8
NC
IC418
28 V–
27 C2–
26 C2+
3
C1+
1
V+
2
5V
4
C1–
25 DR1IN
23 DR2IN
19 DR3IN
24 RX1OUT
22 RX2OUT
21 RX3OUT
20 RX4OUT
18 RX5OUT
17 GND
16 DD
15
NC
14
NC
13 ON/OFF
12
RX5IN
10
RX4IN
9
RX3IN
8
RX2IN
6
RX1IN
5
DR1OUT
7
DR2OUT
11
DR3OUT
IC416
1
5
6
7
8
2
3
4
Z401 0R00
1
5
6
7
8
2
3
4
Z402 0R00
5
1
2
3
4
6
7
8
Z407 0R00
1
5
6
7
8
2
3
4
Z408 0R00
1
5
6
7
8
2
3
4
Z404 0R00
C462 104
27 A1
26 A2
28 A0
9 CS0
10 CS1
4
3
2
47
46
45
44
43
19 #RD1
16 #WR1
35
20
17
24
11
29
#RXRDY
22
DDIS
23
#TXRDY
30
INTRPT
7
SIN
8
38
39
40
41
31
34
32
33
5
12
14
15
42
18
XIN
XOUT
#BAUDOUT
RCLK
#DTR
#RTS
#OUT1
#OUT2
#RI
#DCD
#DSR
#CTS
SOUT
VCC
VSS
#CS2
#ADS
WR2
RD2
MR
D0
D1
D2
D3
D4
D5
D6
D7
1
NC
6
NC
13
NC
21
NC
25
NC
36
NC
37
NC
48
NC
IC431
C461
33/16
C460
104
27 A1
26 A2
28 A0
9 CS0
10 CS1
4
3
2
47
46
45
44
43
19 #RD1
16 #WR1
35
20
17
24
11
29
#RXRDY
22
DDIS
23
#TXRDY
30
INTRPT
7
SIN
8
38
39
40
41
31
34
32
33
5
12
14
15
42
18
XIN
XOUT
#BAUDOUT
RCLK
#DTR
#RTS
#OUT1
#OUT2
#RI
#DCD
#DSR
#CTS
SOUT
VCC
VSS
#CS2
#ADS
WR2
RD2
MR
D0
D1
D2
D3
D4
D5
D6
D7
1
NC
6
NC
13
NC
21
NC
25
NC
36
NC
37
NC
48
NC
IC430
1 GND
2 CX1/RX1
3 RESET1
4 A1
5 B1
6 Q1
7 #Q1
8 GND
16
VCC
15
GND
14
CX2/RX2
13
RESET2
12
A2
11
B2
10
Q2
9
#Q2
IC419
1
2
3
4
X402
V3D
V5D
V5D
V3D
V3D
V3D
V5D
TP12
TP13
TP14
V5D
V5D
V5D
V5D
1
2
3
7
14
IC426
V3D
V3D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
CN402
V3D
V12
5
1
2
3
4
6
7
8
Z405
103
5
1
2
3
4
6
7
8
Z406
103
V5D
V3D
5RD
5WE0
SIORST
TB485
TA485
RA485
RB485
232IRQ
485IRQ
RA485
RB485
TA485
TB485
NMI
TERM
3DAT0
REARW0
REARW1
REARR0
REARR1
3ADR1
3RDWR
CRXD
CTXD
CNTRST
ETCRCS
3DAT3
5ADR3
5ADR2
5ADR1
5DAT7
5DAT6
5DAT5
5DAT4
5DAT3
5DAT2
5DAT1
5DAT0
5DAT7
5DAT6
5DAT5
5DAT4
5DAT3
5DAT2
5DAT1
5DAT0
5ADR3
5ADR2
5ADR1
SICHSL
SIOCS
UPSIRQ
3RESET
3DAT1
3DAT2
3DAT3
3DAT4
3DAT5
3DAT6
3DAT7
DCD
DSR
RXD
RTS
TXD
CTS
DTR
TI
TXD
DTR
RTS
DCD
RXD
DSR
CTS
RI
5DAT(0-15)
5ADR(1-21)
TA485,TB485,RA485,RB485
GND
NMI
GND
TA
TB
RA
TERM
GND
RB
UPS
RDAT2
RDAT1
RADR1
GND
GND
12V
5V
3.3V
GND
RDAT7
RDAT6
RDAT5
RDAT4
RDAT3
RDAT0
GND
REARW0
REARW1
REARR0
REARR1
GND
GND
RI
RTS
TXD
CTS
DTR
RXD
DCD
DSR
3DAT(0-15)
GND
GND
GND
CTXD
CRXD
CNTRST
CCONNECT
GND
5V
5V
(2/10)
(2/10)
(2/10)
(2/10)
(3/10)
(1/10)
(1/10)
(1/10)
(1/10)
(1/10)
(1/10)
(1/10)
(1/10)
(1/10)
(3/10)
(5/10)
(3/10)
MAIN BOARD (6/10)
(1/10)
(1/10)
GND
GND
(5/10)
(2,5,7/10)
(3,9,10/10)
(4/10)
(1/10)
(3,9,10/10)
(3,9,10/10)
TO
REAR BOARD
. . . . . . CN402
A
B
C
D
1
2
3
4
(1/10)
(1/10)
< WAVEFORM >
MAIN BOARD (6/10)
1. 20 ns/DIV, 0.5 V/DIV
< VOLTAGE >
MAIN BOARD (6/10)
< NDEX >
MAIN BOARD (6/10)
IC412
B1
IC414
A2,A3
IC416
A4
IC417
B3/C3
IC418
B3
IC419
A3/B3
IC425
D4
IC426
D3
IC427
C3,C4
IC429
A3
IC432
B1
IC412
–
3.1
0
0
5.0
IC429
5.0
0
0
0
5.0
IC432
–
5.0
0
0
5.0
IC414
0
3.1
0
0
3.1
0
3.1
3.1
IC427
3.1
3.1
3.1
0
3.1
3.1
3.0
3.1
IC417
–
5.0
0
0
0
0
0
–
–
–
0
2.2
–
5.0
IC418
–
5.0
0
0
5.0
0
0
–
0.6
0
0.1
0.6
–
5.0
IC426
3.1
3.1
3.1
3.0
3.0
3.1
0
3.1
3.0
3.0
0
0
0
3.1
IC419
0
4.9
5.0
0
5.0
0
5.0
0
5.0
0
5.0
0
5.0
5.0
0
5.0
IC425
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
0
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
28
Pin 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
IC416
8.6
5.0
5.2
1.3
–6.9
0.1
–6.9
0.1
0.1
0.1
–6.9
0
4.8
–
–
0
0
4.5
5.0
4.4
4.5
4.7
5.0
4.9
5.0
5.1
–2.0
–7.2
SCHEMATIC DIAGRAM OF MAIN BOARD (6/10)
– 36 –