+5V
2
3
1
12
13 4
5
U493A
DG211
+15VDC
LINSTEP LINSTEP
<7>
E3
D3
D3
NC
NC
G2
<7>
<7>
<7>
GRATSEL
GRATADD1
GRATADD2
GRATADD3
GRATADD4
GRATADD5
GRATADD6
GRATADD7
GRATADD8
/STARTRO
93KHZ
GRATSEL
DB5
DB4
187KHZ
GRATSEL
GRATADD1
GRATADD2
GRATADD3
GRATADD4
GRATADD5
GRATADD6
GRATADD7
GRATADD8
/STARTRO
/STARTRO
/VDACEN
/HDACEN
LATCH1
LATCH0
DBLANK
SAMPLE
GBLANK
/GSTOP
/GSTOP
187KHZ
GRATADD1
GRATADD2
GRATADD3
GRATADD4
CARRY
+5V
+5V
I/CK
1
I
2
I
3
I
4
I
5
I
6
I
7
I
8
I
9
I/O 19
I/O 18
I/O 17
I/O 16
I/O 15
I/O 14
I/O 13
I/O 12
I/OE
11
U152
16V8-25Q
NC
NC
NC
NC
NC
ENT
10
ENP
7
CLR
1
LOAD
9
CLK
2
RCO 15
QD 11
QC 12
QB 13
QA 14
A
3
B
4
C
5
D
6
U260
74LS163
/GSTOP
187KHZ
C6
C7
C8
C9
+5V
I/CK
1
I
2
I
3
I
4
I
5
I
6
I
7
I
8
I
9
I/O 19
I/O 18
I/O 17
I/O 16
I/O 15
I/O 14
I/O 13
I/O 12
I/OE
11
U160
16V8-25Q
93KHZ
C5
C4
C3
C2
C1
C0
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
CARRY A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14/PGM
27
O0 11
O1 12
O2 13
O3 15
O4 16
O5 17
O6 18
O7 19
CE
20
OE
22 VPP 1
U268
27C256
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
COLSHUT
93KHZ
/SW1
/SW3
/SW4
/SW2
I/CK
1
I
2
I
3
I
4
I
5
I
6
I
7
I
8
I
9
I/O 19
I/O 18
I/O 17
I/O 16
I/O 15
I/O 14
I/O 13
I/O 12
I/OE
11
U595
16V8-25Q
CR489
CR498
CR598
CR488
R397
15.0K
1
5
1
4
16 U493D
DG211
1
0
1
1
9 U493C
DG211
C497
47UF
+15VDC
+15VDC
+15VDC
-15VDC
-15V
COLOR
SHUTTER
1
2
J498
+15V
1
2
CS100
C2
<7>
R361
10.0K
7
6
8 U493B
DG211
/GRATSAMP
+5V
-15VDC
-15VDC
-15VDC
LINE
SELECT
FOCUS
1
2
3
U352A
74ALS03
/GSTOP
187KHZ
SAMPLE
/GSTOP
+11.8V
R568
22.1K
R571
50K
C10
C11
C12
C13
+11.8V
9
10
8
U533C
74LS00
ENT
10
ENP
7
CLR
1
LOAD
9
CLK
2
RCO 15
QD 11
QC 12
QB 13
QA 14
A
3
B
4
C
5
D
6
U255
74LS163
/GSTOP
GRATADD9
RC0
C10
C11
C12
GRATADD10
4
5
6
U352B
74ALS03
12
13
11
U352D
74ALS03 R348
1.00K
/GSTOP
187KHZ
GRATADD5
GRATADD6
GRATADD7
RC0
+5V
+5V
+5V
<8>
NC
NC
NC
<7>
G2
D5
E3
A
1 QA 3
QB 4
QC 5
QD 6
CLR
2
U434A
74HC393
SYNBLKEN
HBLANK
GRATADD9
BLANK
GRATADD10
COLSHUT
GRATADD9
GRATADD10
COLSHUT
<7>
C2
12MHZ
<7>
G1
CLKRESET
NC
NC
NC
<7>
A
13 QA 11
QB 10
QC 9
QD 8
CLR
12
U434B
74HC393
DBLANK
187KHZ
9
10
8
U352C
74ALS03
GRATADD8
NC
R532
100.0
R538
5.62K
LINSTEP
GBLANK
C13
+5V
+11.8V
NC
ZAXIS
<7>
A3
2
3
7
6
8
5
1
4U565
LM311
R567
10.0K
R569
68.1K
FOCUS_CTRL
+5V
+1.3V
R566
10.0K
20V SP 1
10V SP 2
SUM JCT 3
VOUT 9
V REF OUT 6
VREF IN 7
MSB DB11
28
DB10
27
DB9
26
DB8
25
DB7
24
DB6
23
DB5
22
DB4
21
DB3
20
DB2
19
DB1
18
LSB DB0
17
A0
15
A1
14
A2
13
A3
12
CS
11 -VEE 10
BPI OFF 4
AGND 5
POW GND 16
+VCC 8
U275
AD667
Q572
LATCH0
LATCH0
LATCH1
LATCH1
/HDACEN
DB0
DB1
DB2
DB3
DB4
HDAC
<7>
<7>
<7>
G2
A3
G2
TRACEROT
/60HZSEL
/GLITSEL
/GRATSAMP
SCALE
-11.8V
+11.8V
NC
NC
NC
NC
1A
1
1B
2
2A
3
2B
4
3A
5
3B
6
4A
7
4B
8
5A
9
5B
10
6A
11
6B
12
7A
13
7B
14
8A
15
8B
16
9A
17
9B
18
10A
19
10B
20
11A
21
11B
22
12A
23
12B
24
13A
25
13B
26
14A
27
14B
28
15A
29
15B
30
16A
31
16B
32
J131
NC
NC
NC
NC
J131
CONNECTS
TO J131
<4>
A3
MAIN
BOARD
A3HDAC
VDAC
<7>
<7>
<7>
<7>
<7>
<7>
G2
G2
C4
H3
C4
E3
C173
22PF
/PARADE
/LTNGSEL
RATE1
/LINEGATE
/FLDGATE
/RAMPSEL
TRACEINT
-11.8V
20V SP 1
10V SP 2
SUM JCT 3
VOUT 9
V REF OUT 6
VREF IN 7
MSB DB11
28
DB10
27
DB9
26
DB8
25
DB7
24
DB6
23
DB5
22
DB4
21
DB3
20
DB2
19
DB1
18
LSB DB0
17
A0
15
A1
14
A2
13
A3
12
CS
11 -VEE 10
BPI OFF 4
AGND 5
POW GND 16
+VCC 8
U283
AD667
LATCH1
DB5
DB6
DB7
DB0
DB1
DB2
DB3
/VDACEN
R426
100.0
R427
200.0
+5V
+1.3V
1
2
3
4
5
U523D
CA3046
CR537
CR536
CR525
R526
100.0
C538
.1UF
R533
200.0
+5V
-11.8V
+1.3V
R525
18.2K
U525
TL011
I
3 O 1
C
2
Q525
Q426
Q428
671-1357-02
& BELOW
A3
12
13
11
U533D
74LS00
INTENSITY
+11.8V
C198
.1UF
-11.8V
R198
22.1K
R214
22.1K R217
10.0K
Q298
<7>
LINSTEP
<8>
R489
100.0
C498
10UF
R488
100.0
+15V
+15VDC
-15VDC
F4
C527
.1UF
R527
2.21K
R528
20.0K
1
2
3
U533A
74LS00
/GLTBLNK
Q526
R529
200.0
8
6
7
U523A
CA3046
1
1
9
1
0
U523B
CA3046
U526
TL011
I
3 O 1
C
2
R523
9.31K
& BELOW
671-1357-02
-11.8V
R521
8.45K
+1.3V
R423
20.0K TL011
U423
I
3 O 1
C
2
671-1357-02 & BELOW
<7>
H1
ZAXIS
LATCH0
LATCH0
LATCH1
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
<7>
<7>
<7>
<7>
A3
D5
D5
D5
HMAG1
HMAG2
HMAG3
HPOSN
/BLANK
FOCUS
+11.8V
NC
NC
-11.8V
+11.8V
VDAC
C178
22PF
FOCUS
SCALE
DB0
DB1
DB2
DB3
SCALE
-11.8V
Q423
R421
11.3K
-11.8V
<7>
A3
C197
.1UF
SCALE_CTRL
+11.8V
-11.8V
-11.8V
R221
10.0K
R197
22.1K
R199
22.1K
-11.8V
Q297
-11.8V
/BLANK
TRACEINT
-15V
WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR
AND SERIAL NUMBER RANGES.
SEE PARTS LIST FOR EARLIER VALUESNOTE:

GRATICULE <9>

PART OF A4 CONTROL BOARD