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Replaceable Mechanical Parts

7–2

TSG 90 PATHFINDER Service Manual

Column Descriptions

Items in this section are referenced by figure and index numbers to the illustra-
tions.

Indicates part number to be used when ordering replacement part from
Tektronix.

Column three (3) indicates the serial number at which the part was first used.
Column four (4) indicates the serial number at which the part was removed. No
serial number entered indicates part is good for all serial numbers.

This indicates the quantity of mechanical parts used.

An item name is separated from the description by a colon (:). Because of space
limitations, an item name may sometimes appear as incomplete. Use the U.S.
Federal Catalog handbook H6-1 for further item name identification.

Following is an example of the indentation system used to indicate relationship.

1 2 3 4 5 Name & Description
Assembly and/or Component
Mounting parts for Assembly and/or Component

*MOUNTING PARTS*/*END MOUNTING PARTS*

Detail Part of Assembly and/or Component
Mounting parts for Detail Part

*MOUNTING PARTS*/*END MOUNTING PARTS*

Parts of Detail Part
Mounting parts for Parts of Detail Part

*MOUNTING PARTS*/*END MOUNTING PARTS*

Mounting Parts always appear in the same indentation as the Item it mounts,
while the detail parts are indented to the right. Indented items are part of and
included with, the next higher indentation. Mounting parts must be purchased
separately, unless otherwise specified.

Indicates the code number of the actual manufacturer of the part. (Code to name
and address cross reference can be found immediately after this page.)

Indicates actual manufacturer’s part number.

Figure & Index No.

(Column 1)

Tektronix Part No.

(Column 2)

Serial No.

(Column 3 and 4)

Qty (Column 5)

Name and Description

(Column 6)

Mfr. Code

(Column 7)

Mfr. Part Number

(Column 8)

«
...
88
89
90
91
92
...
»

Содержание TSG 90 PATHFINDER

Страница 1: ...Generator 070 8706 01 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all s...

Страница 2: ...d foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 500...

Страница 3: ...ions This warranty shall not apply to any defect failure or damage caused by improper use or improper or inade quate maintenance and care Tektronix shall not be obligated to furnish service under this...

Страница 4: ...ii TSG 90 PATHFINDER Service Manual...

Страница 5: ...ID Edit and ID Position 2 3 Tone On Off and Tone Menu 2 4 Recall and Store 2 4 Indicators 2 5 Connectors 2 5 Performance Verification and Adjustment Procedures 3 1 Required Test Equipment 3 1 Perform...

Страница 6: ...7 1 List of Figures Figure 1 1 SMPTE Color Bar Components 1 9 Figure 1 2 75 Color Bars 1 10 Figure 1 3 Red Field 1 10 Figure 1 4 SIN X X 1 11 Figure 1 5 5 Step Staircase Gray Scale 1 11 Figure 1 6 0...

Страница 7: ...v TSG 90 PATHFINDER Service Manual Table 1 4 Audio Tone 1 7 Table 1 5 Power Supply 1 7 Table 1 6 Physical Characteristics 1 7 Table 1 7 Environmental Characteristics 1 8 Table 3 1 Required Test Equip...

Страница 8: ...or other property WARNING statements identify conditions or practices that can cause injury or loss of life As marked on equipment CAUTION indicates an injury hazard not immediately accessible as one...

Страница 9: ...from loss of ground If the protective connection to ground is lost all accessible conductive parts in cluding knobs and controls that may appear to be insulated can render an elec tric shock Use the...

Страница 10: ...viii TSG 90 PATHFINDER Service Manual...

Страница 11: ...Specifications...

Страница 12: ......

Страница 13: ...13 June 1977 Tektronix Standard 062 2853 00 Electromagnetic Compatibility Environmental Test 31 March 1977 Tektronix Standard 062 2866 00 Recommendations and reports of the CCIR 1978 Transmission of...

Страница 14: ...e instrument is calibrated in an ambient temperature of 23 C after a warm up time of 20 minutes Safety Standards The following safety standards apply to the TSG 90 H ANSI ISA S82 01 H IEC 348 H CAN CS...

Страница 15: ...al SCH Phase 0 5 Frequency Response Flat within 2 to 4 2 MHz Field Tilt 0 5 Line Tilt 0 5 5 Step Linearity Error 1 Relative step matching Differential Gain 1 Differential Phase 1 2T Pulse K Factor 0 5...

Страница 16: ...585 2 60 7 201 7 626 6 103 5 110 1 443 3 347 1 53 6 285 7 303 0 53 6 285 7 33 0 75 Color Bars Full Field Color Bars 75 Amplitude 7 5 Setup with a 100 IRE White Flag See Fig ure 1 2 SNG Color Bars Opt...

Страница 17: ...sine squared shaped packets Convergence Amplitude Pattern Pulse HAD See Figure 1 11 549 3 mV 76 9 IRE Crosshatch 14 horizontal lines and 17 vertical lines per field 225 ns 25 ns NTC7 Composite See Fig...

Страница 18: ...mplitude 714 3 mV 100 IRE HAD 1 563 s 150 ns Modulate 5 Step Staircase Luminance 571 4 mV 80 IRE Chrominance 285 7 mV 40 IRE Rise Time 375 ns 37 5 ns Matrix See Figure 1 15 Safe Area See Figure 1 16 A...

Страница 19: ...click click ON Channel 1 1 click Channel 2 2 clicks Channel click outputs are offset for positive channel identification Table 1 5 Power Supply Characteristic Performance Requirements Supplemental Inf...

Страница 20: ...rmation Temperature Operating Storage 0 C to 50 C 32 to 122 F 30 C to 65 C 22 to 149 F excluding batteries Altitude Operating battery Operating with AC adapter Storage to 15 000 feet 4572 m to 14 000...

Страница 21: ...Specifications TSG 90 PATHFINDER Service Manual 1 9 Waveform Illustrations Figure 1 1 SMPTE Color Bar Components...

Страница 22: ...Specifications 1 10 TSG 90 PATHFINDER Service Manual Figure 1 2 75 Color Bars Figure 1 3 Red Field...

Страница 23: ...Specifications TSG 90 PATHFINDER Service Manual 1 11 Figure 1 4 SIN X X Figure 1 5 5 Step Staircase Gray Scale...

Страница 24: ...Specifications 1 12 TSG 90 PATHFINDER Service Manual Figure 1 6 0 IRE Flat Field Figure 1 7 50 IRE Flat Field...

Страница 25: ...Specifications TSG 90 PATHFINDER Service Manual 1 13 Figure 1 8 Black Burst Figure 1 9 Field Square Wave...

Страница 26: ...Specifications 1 14 TSG 90 PATHFINDER Service Manual Figure 1 10 Multiburst Figure 1 11 Convergence Components...

Страница 27: ...Specifications TSG 90 PATHFINDER Service Manual 1 15 Figure 1 12 NTC7 Composite Figure 1 13 NTC7 Combination...

Страница 28: ...Specifications 1 16 TSG 90 PATHFINDER Service Manual Figure 1 14 FCC Composite Figure 1 15 Matrix...

Страница 29: ...Specifications TSG 90 PATHFINDER Service Manual 1 17 Figure 1 16 Safe Area...

Страница 30: ...1 18 TSG 90 PATHFINDER Service Manual...

Страница 31: ...Operating Information...

Страница 32: ......

Страница 33: ...aracter lines of text Any one of these text mes sages may be inserted into the video test signal or up to four of them may be cycled in a continuous loop displaying for 1 to 9 seconds each in any orde...

Страница 34: ...arrow keys used in menu selections There is also a Shift Shift Lock button an ON button and a Lock Out button Shift Shift Lock The Shift Shift Lock button is used to access the upper shifted nomenclat...

Страница 35: ...als The arrow keys will also scroll forward and backward through the signal list In addition the alphanumeric keys may be used to select signals directly eliminat ing the need to scroll through all th...

Страница 36: ...display will display the selected audio level i e Tone 4dB The Tone Menu Shift Tone On Off is used to select the tone frequency select the audio level 0 4 or 8 dBu and to turn the audio click on and...

Страница 37: ...has two 16 character lines to display all information necessary for operation signal selection text editing selecting and positioning text messages and making menu selections The PATHFINDER has four...

Страница 38: ...Operating Information 2 6 TSG 90 PATHFINDER Service Manual...

Страница 39: ...Performance Verification and Adjustment Procedures...

Страница 40: ......

Страница 41: ...Adjustment instructions begin on page 3 10 Required Test Equipment The following list of equipment represents the minimum required for the Perfor mance Verification and Adjustment procedures While alt...

Страница 42: ...Cables 75 impedance Qty 2 Tektronix p n 012 0074 00 End Line Termination 75 0 025 termination with BNC connector Tektronix p n 011 0102 01 Performance Verification Checklist Use the following checkli...

Страница 43: ...Gain 2 10 Check K Factor j 2T pulse K Factor 0 5 11 Check Differential Phase and Gain j Diff phase 1 j Diff gain 1 12 Check Line Tilt j Line tilt 3 57 mV 0 5 IRE 13 Check Field Tilt j Field tilt 3 57...

Страница 44: ...WWV to the B input of the Frequency Counter d Set the Frequency Counter for a ratio of A B and set the AVG to 106 e CHECK that the measured oscillator frequency is 3 579545 MHz 10 Hz 2 Check Blanking...

Страница 45: ...ch the top of the 5 Step waveform on the lower display to the DC level on the upper waveform b CHECK that the 5 Step amplitude is 714 mV 7 14 mV 100 IRE 1 IRE 7 Check Rise Time a Set the 1780 to view...

Страница 46: ...e bar b CHECK using the 1780 voltage cursors that the tilt from the beginning to the end of the White bar is 3 57 mV 0 5 IRE ignoring the first and last s 13 Check Field Tilt a Select the Field Square...

Страница 47: ...VEL selection Change the PATHFINDER Tone Amplitude to 4 dBu use the A and keys f CHECK that the Channel 2 THD is 1 g Change the TONE LEVEL to 8 dBu h CHECK that the Channel 2 THD is 1 i Move the audio...

Страница 48: ...at each of the following frequencies j 50 Hz j 4 KHz j 63 Hz j 8 KHz j 125 Hz j 10 KHz j 250 Hz j 12 5 KHz j 400 Hz j 16 KHz j 1 KHz j 20 KHz j 2 KHz g Move the audio cable from the PATHFINDER Audio C...

Страница 49: ...dBu j Change diagnostic menu to 4 dBu j Adjust to 4 dBu 0 05 dBu with the A and keys j Change diagnostic menu to 8 dBu j Adjust to 8 dBu 0 05 dBu with the A and keys 3 Adjust Test Signal Gain j 5 ste...

Страница 50: ...rom the oscillator Y1 f ADJUST the subcarrier frequency to 3 579545 MHz 0 5 Hz NOTE The subcarrier frequency specification is 10 Hz but it is recommended that this adjustment be made as close to 3 579...

Страница 51: ...u 3 Adjust Test Signal Gain a Connect the PATHFINDER Video Output to the 1780 A Input and terminate the loop through in 75 b Set the 1780 for waveform display of Ch A c Select the 5 Step signal from t...

Страница 52: ...modulated and 2T pulses Magnify as necessary to view the ringing f ADJUST L7 and L8 for symmetrical ringing Use the 1780 K Factor graticule to verify that the ringing overshoot is 0 5 of peak g ADJUS...

Страница 53: ...Maintenance...

Страница 54: ......

Страница 55: ...hen there is no keypress for approximately 10 minutes to conserve battery life Auto Power Down is indicated when enabled by a rotating line in the upper right corner of the display Preventive Maintena...

Страница 56: ...nents should only be performed at a static free workstation by qualified personnel H Nothing capable of generating or holding a static charge should be allowed on the workstation surface H Keep the co...

Страница 57: ...tions located on the inside fold of the corresponding circuit diagram or the back of a preceding diagram The circuit board assemblies are assigned assembly numbers starting with A1 Circuit boards have...

Страница 58: ...his selection to RECHARGEABLE when using NiCad batteries and DISPOSABLE when alkaline batteries are installed FACTORY RESET Pressing the ENTER button when this selection is displayed will reset the PA...

Страница 59: ...any change in the part number After repair the circuits may need readjustment Only 4 screws are used in the PATHFINDER to secure the case halves together DO NOT USE MORE THAN 3 INCH POUNDS OF TORQUE O...

Страница 60: ...nect the LCD display cable from J6 and gently pull the two assemblies apart at J1 The rubber board spacers should remain attached to the LCD display 4 Replacement is the reverse of removal Follow this...

Страница 61: ...hem in the front case as you do so The Keypad board is a friction fit in the front case half so you must apply some slight pressure to fully seat the assemblies into the case 5 Place the assembled fro...

Страница 62: ...4 8 TSG 90 PATHFINDER Service Manual...

Страница 63: ...Replaceable Electrical Parts...

Страница 64: ......

Страница 65: ...cal Tektronix Inc Field Office or representative will contact you concerning any change in part number Change information if any is located at the rear of this manual Using the Replaceable Electrical...

Страница 66: ...associated electrical part for example fuse holder follows fuse Chassis mounted parts and cable assemblies have no assembly number prefix and are located at the end of the electrical parts list Indic...

Страница 67: ...N NH 03051 32997 BOURNS INC 1200 COLUMBIA AVE RIVERSIDE CA 92507 2114 TRIMPOT DIV 57668 ROHM CORP 8 WHATNEY IRVINE CA 92713 PO BOX 19515 58050 TEKA PRODUCTS INC 45 SALEM ST PROVIDENCE RI 02907 60395 X...

Страница 68: ...1 2585 03 B021356 CIRCUIT BD ASSY MAIN 80009 671 2585 03 STANDARD ONLY A1 671 2896 00 B010100 B010456 CIRCUIT BD ASSY MAIN 80009 671 2896 00 A1 671 2896 01 B010457 B020729 CIRCUIT BD ASSY MAIN 80009 6...

Страница 69: ...0689 00 CAP FXD MICA DI 550PF 1 300V 80009 283 0689 00 A1C44 283 5267 00 CAP FXD CER MLC 1UF 80 20 25V Y5V 1206 SMD T R 80009 283 5267 00 A1C45 283 5267 00 CAP FXD CER MLC 1UF 80 20 25V Y5V 1206 SMD T...

Страница 70: ...0 1 CTR 0 235 MLG X 0 112 TAIL 30GOLD 0 035 DIA 58050 082 3644 SS10 A1J8 131 2919 01 PCB MALE STR 1 X 4 0 1 CTR 0 235 MLG X 0 112 TAIL 30 GOLD 0 035 DIA 58050 082 3644 SS10 A1J9 131 2919 01 PCB MALE S...

Страница 71: ...1R18 321 5032 00 671 2585 00 671 2585 00 RES FXD THK FILM 15 0K OHM 1 0 125W TC 100 PPM 1206 T R 80009 321 5032 00 A1R18 321 5033 00 671 2585 01 RES FXD THK FILM 18 2K OHM 1 0 125W TC 100 PPM 1206 T R...

Страница 72: ...0 671 2896 00 671 2896 00 RES FXD THK FILM 8 25K OHM 1 0 125W TC 100 PPM 1206 T R 80009 321 5029 00 A1R38 321 5031 00 671 2896 01 RES FXD THK FILM 12 1K OHM 1 0 125W TC 100 PPM 1206 T R 80009 321 5031...

Страница 73: ...9402 00 671 2896 00 671 2896 01 IC DGTL PRGM 80009 160 9402 00 A1U2 160 9402 01 671 2896 02 671 2896 03 IC DGTL CMOS MICROCMPTR 8 BIT 2 T USART A D 16K OTP 1 25MHZ 78CP14 PLCC68 80009 160 9402 01 A1U...

Страница 74: ...119 4503 00 A2 671 2586 00 B010100 B021651 CIRCUIT BD ASSY KEYBOARD 80009 671 2586 00 A2 671 2586 01 B021652 CIRCUIT BD ASSY KEYBOARD 80009 671 2586 01 A2J1 131 0787 00 671 2586 00 671 2586 00 TERM P...

Страница 75: ...Diagrams Circuit Board Illustrations...

Страница 76: ......

Страница 77: ...L or ID CONTROL Abbreviations are based on ANSI Y1 1 1972 Other ANSI standards that are used in the preparation of diagrams by Tektronix Inc are Y14 15 1966 Drafting Practices Y14 2 1973 Line Conventi...

Страница 78: ...Chassis mounted components have no Assembly No prefix See end of Replaceable Electrical Parts List Assembly Number Component Number Schematic Circuit Number Grid Coordinates The schematic diagram and...

Страница 79: ...Diagrams Circuit Board Illustrations TSG 90 6 3 TSG 90 Block Diagram...

Страница 80: ...m J1 H1 B6 S1 A1 A1 S2 A1 A1 S3 A2 A2 S4 A2 A3 S5 A3 A3 S6 A3 A4 S7 A4 A5 S8 A4 C1 S9 B4 A5 S10 C4 B5 S11 D4 C5 S12 D4 C5 S13 D4 C5 S14 D3 C4 S15 D3 C3 S16 D2 C3 S17 D2 C2 S18 D1 C1 S19 D1 C1 S20 D1 B...

Страница 81: ...0 0 0 0 0 0 0 0 0 0 4 2 4 2 0 0 0 0 0 2 3 0 1 0 TSG 90 KEY BOARD 1 2 A2...

Страница 82: ...R14 2 G1 B3 R15 2 B3 D1 R16 2 A1 E3 R18 2 F2 A2 R20 2 G3 B2 R21 2 H3 B2 R22 2 E3 B2 R23 2 G3 A2 R24 2 G3 A2 R25 1 G1 B1 R26 1 H2 B4 R28 1 A2 G1 R29 1 A2 G1 R30 1 A2 E1 R32 2 B1 F4 R33 2 B1 F4 R34 2 C1...

Страница 83: ...TSG 90 CPU CLOCK TIMING DIGITAL AND ID GENERATION 1 A1...

Страница 84: ...G2 A4 R10 G2 B3 R11 G2 A3 R13 H1 A3 R14 G1 B3 R15 B3 D1 R16 A1 E3 R18 F2 A2 R20 G3 B2 R21 H3 B2 R22 E3 B2 R23 G3 A2 R24 G3 A2 R32 B1 F4 R33 B1 F4 R34 C1 E4 R35 B1 E3 R36 F3 B2 R37 F3 B1 R38 E3 B1 R39...

Страница 85: ...1 1 1 1 1 0 0 0 1 0 0 0 0 0 1 1 1 0 0 1 1 0 0 0 1 1 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 TSG 90 TEST SIGNAL AND AUDIO OUT POWER SUPPLY 2 A1...

Страница 86: ......

Страница 87: ...Replaceable Mechanical Parts...

Страница 88: ......

Страница 89: ...you have ordered has been replaced with a new or improved part your local Tektronix Inc Field Office or representative will contact you concerning any change in part number Change information if any...

Страница 90: ...m used to indicate relationship 1 2 3 4 5 Name Description Assembly and or Component Mounting parts for Assembly and or Component MOUNTING PARTS END MOUNTING PARTS Detail Part of Assembly and or Compo...

Страница 91: ...Zip Code 06090 RAYCHEM CORP 300 CONSTITUTION DRIVE MENLO PARK CA 94025 1111 12327 FREEWAY CORP 9301 ALLEN DR CLEVELAND OH 44125 4632 73743 FISCHER SPECIAL MFG CO 111 INDUSTRIAL RD COLD SPRING KY 4107...

Страница 92: ...1 INSUL SLVG ELEC HT SHRINK 0 165 ID 06090 VERSAFIT END ATTACHED PARTS 9 1 CIRCUIT BD ASSY SEE A1 REPL 10 426 2475 00 1 SPACER BOARD POLYCARBONATE 80009 426 2475 00 11 1 CIRCUIT BD ASSY SEE A2 REPL 1...

Страница 93: ...TSG 90 PATHFINDER Service Manual 7 5 A1 A2 FIG 1 EXPLODED VIEW A3...

Страница 94: ...TSG 90 PATHFINDER Service Manual 7 6...

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