HP 9000 Series 500 Computers Model 520 Flin- HEWLETT . a!~ PACKARD 98760 CE Handbook Part No. 9876()-90039 E 0384 Requires Binder No. 9282-0683 Printed in U. S.A First Edition.
98760 CE Handbook for the HP 9000 Series 500 Mode1520 Computer Manual Part No. 98760-90039 Note This handbook is only for the use of HP-qualified service personnel. c Copyright 1984. Hewlett-Packard Company This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photocopied.
Chapter 1 9R760 Product InformatIOn Chapter 2 9k7fJO f 11\ IrfHlIllf'IHill II1'itilll'ltllll1 PM <.. hdptel ;) ()8760 Conflguratloll C hapt!'r 4 9k760 Trollhlf''ihllfltin!J C h
ii Printing History New editions of this manual will incorporate all material updated since the previous edition. Update packages may be issued between editions and contain replacement and additional pages to be merged into the manual by the user. Each updated page will be indicated by a revision date at the bottom of the page. A vertical bar in the margin indicates the changes on each page. Note that pages which are rearranged due to changes on a previous page are not considered revised.
1-1 98760 Product Information ~llcMl~rl . '_----________________ Display Features Cathode Ray Tube: 13-inch diagonal, inline gun Scan: Non-interlaced raster scan Vertical Refresh Rate: 60 Hz and 50 Hz, switch selectable Horizontal Refresh Rate: 24.9 kHz Alphanumeric Display Alpha Raster Size: 207 mm x 163 mm (720 dots x 390 dots) Screen Capacity: 2080 characters (26 lines of 80 characters) Character Font: 7 dot x 9 dot in a 9 x 15 matrix Character Size: 2.01 mm wide x 3.
1-2 98760 Product Information Configurations The 98760 is available as part of the 9020 Product. The 9020 Product is also referred to as the Model 520. The 98760 is the Standard Color Display for the 9020 Product. Related Documentation HP Part No.
2-1 ~9_8_76_0_E_n_vi_ro_n_m_e_n_t_allI_n_st_all_a_ti_· 0_0/---, I cha2Pt~ I _ Preventive Maintenance Environmental Environmental Range Storage Temperature: + 10°C to + 40°C - 40°C to + 75°C Ambient Humidity: 20 to 80% Operating Temperature: Size/Weight Height: 25cm Width: 42cm Depth: 48cm Net Weight: 22.
2-2 98760 Environmental/Installation/PM CAUTION ALWAYS SWITCH THE COMPUTER POWER SWITCH TO THE OFF POSITION BEFORE CONNECTING THE 98760 POWER CORD. THE 98760 HAS NO POWER SWITCH. IT IS SWITCHED ON VIA A RELAY WHICH IS ACTIVATED WHEN THE COMPUTER IS SWITCHED ON. 8. Connect the power cord to the display, and plug cord into ac outlet.
8760 Environmental/Installation/PM Alignment Holes Alignment Pegs Balance Point Aligning Display with Computer Power Cord Connector Voltage Selector Switch Back of Display Weight Support Bar 2-3
2-4 98760 Environmental/Installation/PM @ Australia 0 t3 ev &§J • • • E Denmark N South Africa N L •• L Europe L Switzerland Australia Denmark Europe Great Britain South Africa Switzerland United States United States [ill N • • ~ ~ L Country United States 120V N Great Britain Q• L E N United States 240V Part Number Opt.
3-1 98760 Configuration L -_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ There is no other configuration of the 98760.
3-2 98760 Configuration
4-1 _ ________________ 98760 Troubleshooting ~llcM4~rl . ~ Refer to Dead Display Unit Procedure Initial Display Troubleshooting Flowchart CAUTION MAKE SURE THE SCREEN POTENTIOMETER IS TURNED BACK TO ITS ORIGINAL POSITION. FAILURE TO DO SO MAY DAMAGETHE VIDEO BOARD.
4-2 98760 Troubleshooting Refer to Dead Base Troubleshooting Procedure in 9020 CE Handbook Troubleshooting Section. >---... ...
98760 Troubleshooting 4-3 PI To Alpha/Interface Board (A 73) Connector P3; Power SGND SGND SGND SGND 18 18 -18 DGND DGND DGND DGND DGNO 12 12 -12 5 50 48 46 49 47 45 44 43 42 32 41 39 37 35 33 31 30 29 28 26 24 22 27 25 23 21 19 40 38 38 34 20 18 16 14 12 10 17 15 13 11 9 SGND SGND SGND SGND 18 -18 -18 DGND DGND DGND DGND DGND 12 -12 5 P2 To Alpha/Interface Board (A73) Connector P4; lOP Bus GND NWAIT NFLG NRAMD READ NPOLL NIFC NIOBSB NIODO GND NIOD3 NIOD4 GND NIOD7 NIOD8 GND NIODll NIOD12
4-4 98760 Troubleshooting Replace CRTlYoke Assembly Dead Display Unit Troubleshooting Flowchart
98760 Troubleshooting 4-5 Check P3-5 for Red P3-7 for Gm P3-9 for Blu on Video Drive Board Check Voltage Across T101 for Red T201 for Blu T301 for Grn on Video Drive Board No Yes Check P4-2 for Red P4-4 for Grn P4-6 for Blu on Digital Video Board Check for continuity T101 to Pin 8 T201 to Pin 6 P301 to Pin 11 From Video Drive Board to CRT Yoke Assembly Defective Wiring Repair or Replace Video Troubleshooting Flowchart
4-6 98760 Troubleshooting Sweep Troubleshooting Flowchart
98760 Troubleshooting 4-7 Point (Read +78V) i ~O ~ -12VTest Point Display Power Supply Test Points Board Number 09836-66550
4-8 98760 Troubleshooting
5-1 _ ________________ 98760 Diagnostics . ~ ~llcha5~~1 Powerup The green SWEEP INDICATOR lights at powerup to indicate that the vertical and horizontal scans are operating correctly. If the LED fails to light at powerup, or goes off during operation, a faulty scan is indicated. Alpha and graphics logic is thoroughly tested at powerup, and appropriate messages are issued if failures occur. System Integrity Test The System Integrity Tests (SIT) include 98760 diagnostics.
5-2 98760 Diagnostics
6-1 _ ________________ 98760 Adjustments . ~ ~llcM6~rl Tools Required Description Part No.
6-2 98760 Adjustments TP301, GREEN CLAMP POT RED Video Board Pots and Test Points HORIZONTAL CENTER VERTICAL HEIGHT SCREEN GRID FOCUS Sweep Board Adjustments
7-1 98760 Systems . ~________________ ~II~a7~~1 _ The 98760 is a part of the 9020 Product. It is the Standard Color Display for the Product. It is not used on other systems.
7-2 98760 Systems
8-1 98760 Replaceable Parts ~II~a8~&1 . ~________________ _ Repair the 98760 by replacing the faulty assembly. There are exchange assemblies and nonexchange parts. If the faulty assembly is an exchange assembly, as indicated in the following table, return the exchange assembly to the Computer Support Division (CSD) for repair and obtain a rebuilt part. Otherwise. order the replacement part from the Corporate Parts Center.
8-2 98760 Replaceable Parts Replaceable Parts Index Number HP Part Number 1 2 3 4 5 5 09836-69550 09836-69540 09836-69542 98760-69573 98760-69575 98760-69576 0515-0212 98760-66501 98760-66500 0380-1624 8120-4102 8120-4100 1:\12U-4157 09836-61603 1460-1915 2090-0070 09836-61601 1400-0482 98760-04102 0400-0025 3050-0066 2190-0918 8120-4099 0510-0595 5040-8149 98760-67901 4040-1926 4040-1923 98760-40101 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1460-1982 0624-0403 1480-0083
9-1 98760 Diagrams . '----________________ ~llcha9~~1 Tube Drive Sweep A40 Reset Video Drive A42 (Analog) Red Green Blue Hsync Vsync Vblank RGB +75 75R Digital Video A75 Power Supply A50 +12 -12 +5 +12 Data and Control Alpha/Interface A73 +2, +5 +12 ..._ _ _ _ _......
9-2 98760 Diagrams
10-1 98760 References . I~----I There are no references.
10-2 98760 Reference
11-1 98760 Service Notes Keep your service notes in this section.
11-2 98760 SerJice Notes
