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Tektronix WFM 300A WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR, TIMING <8>

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R416

68.1K R406

10.0K

+5V+11.8V

<10>

G2

/SYNCOUT

<6>

J419

CONNECTS

TO P600

A5

GBR

BOARD

G1

1

2

J419

INTCOMPST

<7>

<7>

G1

H2

R422

20.0K

1

4

5 8

6

7 3

2

U425

MAX453

/INTCOMPST

INTREF C424

7.5PF

C422

.1UF

R517

825.0K

C521

4.7UF

R424

1.00K

R519

20.0K

+5V

NC

NC

NC

NC

C508

27PF

COMP

14

DET IN

17

CLAMP

9

AMP OUT

7

VIDEO

2

SYNC OUT 19

A10

B12

C15

D16

VC2

20

GND

8

GND

13

VC1

1

VC1

4

VC1 5

VC1 6

VC1 11

VEE 3

VEE 18

U514

H2028

9

10

8

U502C

74HC00

+5V +15V

NC

NC

CR514

D-0141

C406

65PF

R506

68.1K

R507

47.5K

R508

47.5K

C514

.01UF

2

3

6

7

4

8

15 U510

LM318

+5V

+5V

-11.8V

NC

2

3

7

6

8

5

1

4U417

LM311

R514

5.11K

R417

10.0K

R418

30.9K

R415

30.9K

+11.8V

<7>

C2

NC

D

2 Q 5

CK

3 Q 6

P

R

4

C

L

1

U428A

74LS74

/FIELD

+5V

+5V

(1uS)

R224

2.80K

12

13

11

U502D

74HC00

+5V

+15V

-15V

R425

1.00K

5.1V

R520

332.0

C520

.1UF

VR518

-15V

(56uS)

C

X

1

5

R

X

1

4

A

12

B

11 C

L

1

3

Q10

Q 9

U226B

96LS02

R126

150.0K

C226

850PF

C228

790PF

VCOOUT 4

PCB

3

PCA

14

C1A

6

PC1 2

PC2 13

VCOIN 9

LD 1

SF 10

ZENER 15

R2

12

R1

11

INH

5

C1B

7

U230

4046

+5V

NC

1

2

3

U422A

74LS00

R330

100.0K

(0.5uS)

C

X

1

R

X

2

A

4

B

5 C

L

3

Q 6

Q 7

U226A

96LS02

C227

110PF

R227

2.80K

+5V

(1uS)

<7>

<7>

R321

12.1K

C222

850PF

HSYNC

/HSYNC

+5V

+5V

+5V

C

X

1

5

R

X

1

4

A

12

B

11 C

L

1

3

Q10

Q 9

U223B

96LS02

C2

C4

+5V

H1 G2

<7> <10>

NC

(2uS)

C410

150PF

R405

100.0

C322

850PF

/CLMPULSE

+5V

C

X

1

5

R

X

1

4

A

12

B

11 C

L

1

3

Q10

Q 9

U317B

96LS02

R322

8.45K

NC

C321

850PF

+5V

C

X

1

R

X

2

A

4

B

5 C

L

3

Q 6

Q 7

U317A

96LS02

4

5

6

U422B

74LS00

+5V

NC

NC

NC

C330

.022UF

+5V

(220uS)

C216

850PF

R215

1.00M

R131

191.0K

R130

191.0K

+5V

C

X

1

R

X

2

A

4

B

5 C

L

3

Q 6

Q 7

U218A

96LS02

+5V

+5V

+5V

Q509

R409

10.0K

R404

5.49K

C404

850PF

+5V +5V

<7>

G3

R410

4.75K

GLTBLKEN

+5V

NC

<9>

B4

9

10

8

U422C

74LS00

/GLTBLNK

+5V

+5V

D

12 Q 9

CK

11 Q 8

P

R

1

0

C

L

1

3

U428B

74LS74

B2

B4

(9.5uS)

<9>

<10>

C223

850PF

R222

24.3K

C

X

1

R

X

2

A

4

B

5 C

L

3

Q 6

Q 7

U223A

96LS02

/HBLANK

HBLANK

+5V

+5V

HBLANK

NC

(7uS)

R218

20K

C

X

1

5

R

X

1

4

A

12

B

11 C

L

1

3

Q10

Q 9

U218B

96LS02

C220

850PF

R219

12.1K

WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR

+5V

+5V

TIMING <8>

PART OF A4 CONTROL BOARD

Contents

Main Page Page Page Contacting Tektronix Page Page Page Page Page Page Page Page Page General Safety Summary To Avoid Fire or Personal Injury Symbols and Terms Page Page Page Page Page Page Page Page Page Page 111 Table 115: Certifications and compliances 112 Table 115: Certifications and compliances (cont.) Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Service Safety Summary Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Section 8 Replaceable Electrical Parts Parts Ordering Information Using the Replaceable Electrical Parts List Cross IndexMfr. Code Number to Manufacturer Abbreviations List of Assemblies Column Descriptions 83 Cross Index Mfr. Code Number To Manufacturer Code. 84 WFM 300A Code. 85 Code. 86 WFM 300A Replaceable Electrical Parts Part Number Serial / Assembly Number Number Tektronix Effective Discontinued Name & Description Mfr. Code Mfr. Part 87 88 WFM 300A 89 810 WFM 300A 811 812 WFM 300A 813 814 WFM 300A 815 816 WFM 300A 817 818 WFM 300A 819 820 WFM 300A 821 822 WFM 300A 823 824 WFM 300A 825 826 WFM 300A 827 828 WFM 300A 829 830 WFM 300A 831 832 WFM 300A 833 834 WFM 300A 835 836 WFM 300A Section 9 Diagrams/Circuit Board Illustrations Symbols Component Values Assembly Numbers Grid Coordinates S B GAMUT LIMIT REMOTE A3 MAIN BOARD Component Locator * See Parts List for serial number ranges. A3 Main Board REAR VER TICAL INPUT <1> REAR WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR Schematic Diagram <2> Component Locator Chart Assembly A3 and A3A1. Partial Assembly A3 also shown on diagrams 1, 3, 4 and 5. A3A1 Static Sensitive Devices COMPONENT T O GBR TRANSCODER VER TICAL GAIN <2> $&!$ &$ %!$!$ Schematic Diagram <3> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A3. Partial Assembly A3 also shown on diagrams 1, 2, 4, and 5. TIMES 5 VERTICAL !#% # OUTPUT VERTICAL Schematic Diagram <4> Component Locator Chart LOW PASS FILTER HORIZONTAL <4> <2> <5> <3> <5> Schematic Diagram <5> Component Locator Chart A2 A2 Front Panel Board Static Sensitive Devices DOWN CONTROL CIRCUIT & FRONT PANEL <5> 1 LINE A2 FRONT PANEL BOARD X52 FIELD MAG2 LINE A5 GBR Board WFM300A Schematic Diagram <6> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A5. GBR & COMPOSITE OUT <6> # # A4 Control Board Component Locator A4 Control Board * See parts list for serial number ranges. (with cross-references to schematic diagrams 7, 8, 9, and 10) WFM 300A COMPONENT/COMPOSITE WAVEFORM MONIT OR %# # A4 Control Board Board lookup table on previous page. 671-1357-00 03 WFM300A Schematic Diagram <8> Component Locator Chart WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR TIMING <8> Schematic Diagram <9> Component Locator Chart Assembly A4. Partial Assembly A4 also shown on diagrams 7, 8, and 10. * See parts list for serial number ranges. GRATICULE <9> Schematic Diagram <10> Component Locator Chart Assembly A4. Partial Assembly A4 also shown on diagrams 7, 8, and 9. <6> GAMUT & REMOTE <10> A1 Power Supply Board Use the circuit board table below for schematic <11>. (with cross-references to schematic diagrams 11 and 12) +*%$ ""(+*(/*%* WFM 300A COMPONENT/COMPOSITE WAVEFORM MONITOR LOW VOLTS POWER SUPPLY <11> Schematic Diagram <12> Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram. Assembly A1. Partial Assembly A1 also shown on diagram 11. ( HV OSC & ERROR AMP "$&!"!)$%'""+ '($&"& $!) ($&"& Page Section 10 Replaceable Mechanical Parts Parts Ordering Information Using the Replaceable Mechanical Parts List Cross IndexMfr. Code Number to Manufacturer Abbreviations Chassis Parts Column Descriptions 103 Cross Index Mfr. Code Number To Manufacturer Code Manufacturer Address City, State, Zip Code 104 WFM 300A Replaceable Mechanical Parts Part No. Serial Number Fig. & Index No. Tektronix Code Mfr. Part No. 105 Fig. & Index No. Mfr. Part No. Qty Serial Number Effective Dscont Part No. Page WFM 300A A4 A1 A2 A3A1 A3A2