CHOWEL WELCOM-250Y, Руководство по обслуживанию

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WELCOM-250Y, Z MAINTENANCE MANUAL
CHOWEL
- 36 -
9) Circuit diagram for RB10(2/2)
D1
SPECIFIED SELECT
A13
U
7A
74LS14
1
2
Vcc=8
A0
6.144MHz
VC
C
_BAR
J
P1
F
LEX
J
U
M
PER
1 2 3 4 5 6
Gnd=4
VC
C
D3
A4
A11
CN1 D
E-9PA-N
-S1
5 9 4 8 3 7 2 6 1
L1
SN
-3-200
A1
Gnd=7
D2
A15
C5 0.
1U
A14 A9
ZD2
R
D
6.
2J
D2
J
P4
J
U
M
PER
1
2
Vcc=14
VC
C
A6
C6 0.
1U
A0
N
L4
0.
1U
SI
-8201L
C
ON
V1
IN
OU
T
C
Vcc=27,76
Vcc:16
A5
U
7E
74LS14
11
10
A2
Gnd=10,29,38,70
N
L3
O.
1U
D4
R
ESET
BOX
V1.
0
R
B10
A3
1
2
M
onday
,
J
une
05,
2000
T
it
le
Siz
e
D
oc
um
ent
N
um
ber
R
ev
D
at
e:
Sheet
of
A15
N
L5
0.
1U
D4
A7
Gnd=4
VC
C
ZD1
R
D
6.
2J
A10
U4 EX
0-3
12.
288M
H
z
2 3
6 7 5
1
D
ST
B C A
F
A6
A12 A3
VC
C
D0
U
7D
74LS14
9
8
A1
D5
Vcc=5
D5
A8
D6
VC
C
C7 1u
Gnd:8
Gnd=7
D3
A11
J
P2
J
U
M
PER
1
2
C3 220U
U3
M
B3771
D
IP8
6 7 1
8 3 2
SB SA CT
R
ES
OC
SC
U
6B
74H
C
32AP
4 5
6
U
6A
74H
C
32AP
1 2
3
C4 220U
A7
U
7C
74LS14
5
6
Vcc=14
L2
SN
-3-200
VC
C
A4 A13
U
6C
74H
C
32AP
9
10
8
J
P5
F
LEX
J
U
M
PER
1 2 3 4 5 6
D6
A2
U
7F
74LS14
13
12
U5
M
C
34050OP
11 14
2 6 7 1
13
3 5 4 15 9 12
10
D
2-
D
1+
A1+ A2+ A2- A1- D
1-
R
10
R
20
R
EN
D
1I
D
2I
D
EN
D
2+
VC
C
N
L1
0.
1U
Vcc=28
A9
C8
1000P
R1
VC
C
N
L2
0.
1U
D7
D0
C1 220U
U
6D
74H
C
32AP
12 13
11
C9 470P
VC
C
Gnd=14
A12
U1 H
D
647180X
/F
P
62 63 64 65 66 67 68 69
49 48 26 51 52
39 40 41 42 43 44 54 55 56 57 58 59 60 61
74 75 15 16 17 18 19 20 21 22 23 24 25 28
5
79 78 77
30 31 32 33 34 35 36 37 71
45 46 47 73 72 53
2 3 4 1 80
6 7 8 9
11 12 13 14 50
H
ALT
PB6/
R
EF
PB5/
IOE
PB4/
M
E
PB3/
E
PB2/
LI
A
PB1/
W
A
PB0/
AD
R
X
A0
T
X
A0
T
OU
T
1
T
OU
T
2
T
OU
T
3
PG0/
AN
0
PG1/
AN
1
PG2/
AN
2
PG3/
AN
3
PG4/
AN
4
PG5/
AN
5
T
X
A1/
PA0
R
X
A1/
PA1
C
LKA1/
T
EN
D
0/
PA2
T
X
S/
PA3
R
X
S/
C
T
S1/
PA4
SC
LK/
PA5
D
R
EQ1/
PA6
T
EN
D
1/
PA7
X
T
AL
EX
T
AL
A8/
PD
0
A9/
PD
1
A10/
PD
2
A11/
PD
3
A12/
PD
4
A13/
PD
5
A14/
PD
6
A15/
PD
7
A16/
PE0
A17/
PE1
A18/
PE2
A19/
PE3
ST
/PE4
BU
SR
Q/
PE5
BU
SAK/
PE6
W
AI
T
/PE7
PF
0/
D
0
PF
1/
D
1
PF
2/
D
2
PF
3/
D
3
PF
4/
D
4
PF
5/
D
5
PF
6/
D
6
PF
7/
D
7
C
LK
R
T
S0
C
T
S0
DCD0 M
P0
M
P1
IC
IN
T
0
IN
T
1
IN
T
2
N
M
I
R
ESET
A0/
PC
0
A1/
PC
1
A2/
PC
2
A3/
PC
3
A4/
PC
4
A5/
PC
5
A6/
PC
6
A7/
PC
7
C
KAO/
D
R
EQ0
U
7B
74LS14
3
4
C2 220U
A8
MODE SELECT
A14
330
D7
A3
U2
U
PD
27C
256AD
-15
10
9 8 7 6 5 4 3
25 24 21 23
2
26 27 20 22
1
11 12 13 15 16 17 18 19
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 CE OE VPP
O0 O1 O2 O3 O4 O5 O6 O7
R1
R2
R3
R4
RN1 R
GLD
4Y
4.
7K
J
P3
J
U
M
PER
1
2
A10
<RS-422>
D1
A5