Lexicon 200, Service Manual

Page: 73 / 90

.1/25
.1/25
*
74HC04
680 680 680
1K
1K
1K
.1/25
DESCRIPTION
REV
CHECKER DRAFTER
AUTH.
Q.C.
REVISIONS
1
SIZE
OF
32
A B C D
1
2
3
4
5
6
7
8
4
5
6
7
8
A B
C D
NUMBER
CODE
Q.C. ISSUED
DATE
APPROVALS
CONTRACT NO.
SHEET
FILE NAME
B
DRAWN CHECKED
TITLE
exicon
REV
3 OAK PARK BEDFORD, MA 01730
+5VD
+5VD
74HC04 74HC04
74HC04 74HC04 74HC04
.1/25
74HC273
8Q
8D CLR CLK 6D
1Q 6Q
1D 2D
2
Q
7D
7
Q
3D
3
Q
5D
5
Q
4D
4
Q
74HC273
8Q
8D CLR CLK 6D
1Q 6Q
1D 2D
2
Q
7D
7
Q
3D
3
Q
5D
5
Q
4D
4
Q
74HC273
8Q
8D CLR CLK 6D
1Q 6Q
1D 2D
2
Q
7D
7
Q
3D
3
Q
5D
5
Q
4D
4
Q
+5VD
CHANGED PER DCR 000928-00
1
8/15/00
RWH
C
A
M
9/28/00 9/28/00
CW
J
V
9/28/00
1 1 1
TITLE
SPARES
GROUND POWER
5 [XX/XX] DENOTES [SHEET NUMBER/SECTOR] 4
GROUND
GROUND CHASSIS
ANALOG
GROUND DIGITAL
NOTES
1 UNLESS OTHERWISE INDICATED, RESISTORS ARE 1/10W 2 UNLESS OTHERWISE INDICATED, RESISTORS ARE 5% 3 UNLESS OTHERWISE INDICATED, CAPACITORS ARE UF/V
COLUMN
.
DRIVERS
DOCUMENT CONTROL BLOCK: #060-14669
060-14669
BYPASS CAPS
1
SCHEM,FP BD,MPX200
ROW/COLUMN DRIVERS
SHEET NUMBER
REVISION NUMBER
ROW/COLUMN DRIVERS
1
7 COMPONENTS MARKED WITH ARE NOT ON BOM.
*
6 LAST REFERENCE DESIGNATORS USED:C4, D43, DSP3, J1, Q3, R29,
SW6, U4.
9/28/00
RWH
10/3/00
JLM
10/2/00
CW
CAM
10/2/00
Address: 0x4C02
Address: 0x4C03 Address: 0x4C04
4
LEDS SEVEN SEGMENT DISPLAYS BUTTONS
1 OF 4 2 OF 4 3 OF 4 4 OF 4
14669-1
1
1
10-18-2000_10:55
FRNT_D6 FRNT_D7 FRNT_D6 FRNT_D5 FRNT_D4 FRNT_D3 FRNT_D2 FRNT_D1 FRNT_D0 FRNT_D7 FRNT_D5 FRNT_D4 FRNT_D3 FRNT_D2 FRNT_D1 FRNT_D0 FRNT_D6 FRNT_D5 FRNT_D4 FRNT_D3 FRNT_D2 FRNT_D0 FRNT_D1 FRNT_D7
FRNT_D7 FRNT_D6 FRNT_D5 FRNT_D4 FRNT_D3 FRNT_D2 FRNT_D1 FRNT_D0
FRNT_D[7:0]
ROW_REG_0/
ROW_REG_0/
ROW_REG_2/
ROW_REG_2/ FP_RESET/
FP_RESET/ FP_RESET/ FP_RESET/
LED_ROW_[20:0]/
[2/A7,3/B8,4/A7]
LED_ROW_15/ LED_ROW_14/ LED_ROW_13/ LED_ROW_12/ LED_ROW_11/ LED_ROW_10/ LED_ROW_9/ LED_ROW_8/ LED_ROW_16/ LED_ROW_17/ LED_ROW_18/ LED_ROW_19/ LED_ROW_20/ LED_ROW_0/ LED_ROW_7/ LED_ROW_6/ LED_ROW_5/ LED_ROW_4/ LED_ROW_3/ LED_ROW_2/ LED_ROW_1/
COLUMN_[2:0]
[2/D7,3/C8,4/D7]
COLUMN_1 COLUMN_0 COLUMN_2
19
18
1
11 14
2 15
3 45
17
16
76
13
12
89
U4 19
18
1
11 14
2 15
3 45
17
16
76
13
12
89
U3 19
18
1
11 14
2 15
3 45
17
16
76
13
12
89
U2
ROW_REG_1/
ROW_REG_1/
C2
SWITCH_ROW0/
[4/D4]
R10
2
7
0
R
9
270
2
1
U1
6
5
U1
4
3
U1
12
13
U1
10
11
U1
2N4403
Q3
2N4403
Q1
2N4403
Q2
[4/D4]
SWITCH_ROW1/
C4
R3
R1
R2
R4 R5 R6
8
9
U1
NC NC NC
R
7
270
R
8
270
R11
2
7
0
10
1 2 3 4 5 6 7 8 9
11 12 13 14 15 16 J1
C1
C3
R25
2
7
0
R24
2
7
0
R20
2
7
0
R21
2
7
0
R26
2
7
0
R23
2
7
0
R22
2
7
0
R27
2
7
0
R17
2
7
0
R16
2
7
0
R12
2
7
0
R13
2
7
0
R18
2
7
0
R15
2
7
0
R14
2
7
0
R19
2
7
0