Grounding
Wire
Figure 7. Discharging the CRT Post Accelerator Cable
(Serial Number Prefixes: 3004A and Above)
8. Touch the screwdriver’s tip to the top lead of each of the 11 large vertical capacitors on
the
High Voltage Regulator assembly.
9. The
High Voltage Regulator and
CRT assemblies should now be discharged.
10. Remove the bottom cover of the IF-Display section by loosening the screw shown in
Figure 5. Discharge the four large
Motherboard capacitors by shorting the 2
screws, holding each capacitor to the motherboard, together.
11. Remove the front panel from the instrument. Refer to the Front Panel Removal and
Repair procedure in the
Front Panel Assembly tab.
12. Remove the 4-wire, twin-lead output cable connector
from the
XYZ Driver
Amplifier board assembly. Remove the 3-wire cable connector
from the
board
assembly. Remove the two 904 (white/black/orange) wires
from the
board
assembly. Remove the two 905 (white/black/green) wires
from the
board
assembly.
13. Unscrew the cable clamp
of the 5-wire cable that comes from the rear of the
CRT. Remove the 5-wire cable connector
from the jack of the
High Voltage
Regulator. Remove the cable clamp from the 5-wire cable.
14. Remove the two screws
that attach the two rear CRT brackets to the instrument.
Both the upper, flat bracket and the lower, U- shaped bracket
are attached to the
CRT shield with double- sided tape. Do not remove these brackets from the CRT shield.
15. Slide the CRT out through the front of the instrument.
16. Remove the CRT from its shields.
1 2
Содержание 85662A
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Страница 17: ...can cause the CRT to be disabled If U14 is operating correctly visually inspect the A4A9 assembly Al 3 ...
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Страница 28: ...AlA KEYBOARD Al Front Panel Assembly and Component Locations ...
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Страница 51: ...3 AlA XYZ Driver Amplifier Component Locations 85662 60236 ...
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Страница 124: ...DSl M A I N S I N D I C A T O R C6 CATHODE 4 1 El r l CR9 P I AlA Rectifier Component Locations 85662 60204 ...
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Страница 196: ...R 8 YSL L Il ln R IC7n XSL 0 0 0 R 5 I I Y G A I N R 2 Y E X P A3A3 Line Generator Component Locations 85662 60128 ...
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Страница 216: ...Verify binary count sequence starting at the least significant bit SO 500 ns square wave to S7 64 ps square wave 4 A3A6 ...
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Страница 258: ...R 5 7 T H G A I N R59 T H O F S A3A9 Track and Hold Component Locations 85662 60165 ...
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Страница 262: ...ASXAlPI I A3XA2P 1 AJXAJP 1 A3XA4P 1 A3XA5P 1 A3XA6Pl A3XA7P 1 A3XA9P 1 AJXAlP2 A3XA2P2 A3XASP2 A3XA6P2 A3XA7P2 ...
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Страница 275: ...R2 LG OS p 10 C6 I I R14 ar OS 1 5 1 A4Al Video Processor Component Locations 85662 60122 ...
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Страница 294: ...2 k 4 5 7 J2 F1 TEN R91 12VTV R14 LG 20 A4A2 Log Amplifier Detector Component Locations 85662 60132 ...
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Страница 316: ...10 A 1 2V T Y P 7 V T Y P A4A3 Log Amplifier Filter Component Locations 85662 60009 ...
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Страница 321: ... 15v t15v cl7 ETC Figure 2 A4A4 Input Buffer Amplifier Current Sinks 2 A4A4 ...
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Страница 365: ...A4A8A2 Down Converter Component Locations 85662 60005 ...
Страница 366: ...c31 R29 1 8 4 M H z NULL W I D E G A I N A4A6Al Up Converter Component Locations 85662 60006 ...
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Страница 379: ...c40 c 4 1 PK SYM y Hz A M P L 10 Hz AMPL A4A7 3 MHz Bandwidth Filter Component Locations 85662 60004 85662 60174 ...
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Страница 409: ...Table 4 Video Bandwidth Truth Table 6 A4A9 ...
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Страница 452: ...A4A6A2 Output Driver Component Locations 85662 60170 Option 067 Tab ...
Страница 453: ...A4A6Al Input Buffer Component Locations 85662 60171 Option 067 Tab ...
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Страница 473: ...Table 4 Video Bandwidth Truth Table Option H96 3 ...
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Страница 504: ...Table 4 Video Bandwidth Truth Table 100 Hz H 30 Hz H H 10 Hz H 3 Hz H 1 Hz 6 Option 462 ...
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Страница 582: ...This page intentionally left blank 32 General Parts Listing ...
Страница 594: ...HEWLETT PACKARD HP Part No 85662 90085 Printed in USA ...