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Summary of Contents for 98780 CE

Page 1: ...HP 9800 Series Computers 98780 CE Handbook Part No 98780 90039 E 1283 Requires Binder No 9282 0683 Fli HEWLETT PACKARD Printed in U S A Second Edition December 1983 ...

Page 2: ...d to another language without the prior written consent of Hewlett Packard Company The information contained in this document is subject to change without notice Restricted Rights Legend Use duplication or disclosure by the Government is subject to reslrictions as set forth in paragraph b 3 B of the Rights in Technical Data and Software clause in DAR 7 104 9 a Hewlett Packard Company 3404 East Har...

Page 3: ... 1 t 1 l hdpll l K7KO Jlillqdldtl hdptl l I Q 7kO I Id h l l1c l alt1ph 1 J is SO I lld lIH II hdjll l 9H7HO dJlIstIlWllh hapll r 7 YH7HO PI T1plH r tI l hdpter H YH7S0 Rl pld Pllwnt Pdrts hdptpr 9 woso Dld 1r 1IlI o ChdPll 1 10 YHiHO Hetl H tl l h ll t y 11 9H7HO Sl n Ill Nolt s ...

Page 4: ...d Fort Collins Systems Division products sold in the U SA and Canada this warranty applies for ninety 90 days from the date of delivery Hewlett Packard will at its option repair or replace equipment which proves to be defective during the warranty period This warranty includes labor parts and surface travel costs if any Equipment returned to Hewlett Packard for repair must be shipped freight prepa...

Page 5: ...Matrix Size Graphics Memory Graphics Cursor Resolution Vector Drawing Speed 5 C to 40 C ambient 40 C to 65 C 80 26 5 cm 41cm 38 cm 14 kg 30 5 cm 12 inch diagonal Non interlaced raster scan 60 Hz 60 Hz 236 mm x 149 mm 720 dots x 455 dots 2400 characters 30 lines of 80 characters 7 dot x 9 dot in a 9 x 15 matrix 2 3 mm wide x 3 0 mm high 7 x 9 character 128 ASCII characters European Katakana Blinkin...

Page 6: ... System Exerciser Manual 09845 90039 98780 CE Handbook Product Support Package The 98780A requires no special tools to service other than those which are provided for servicing the 98458 Safety LETHAL VOLTAGES ARE PRESENT INSIDE THE 98780A RE FER TO THE GENERAL SAFETY GUIDELINES IN THE 98780A SERVICE MANUAL Modifications for 9000 Series 500 Model 20 The 98780A display unit is used with the 9000 co...

Page 7: ...TION I THE 98780A RELIES ON THE MAINFRAME TOP COVER FOR WEIGHT SUPPORT THE MAINFRAME TOP COVER MUST BE INSTALLED BEFORE INSTALLING THE 98780A Pull out the locking rods one on the back of each support leg and place the 98780A over the mainframe support legs as shown in Figure 1 1 Push in on the locking rods to lock the 98780A to the mainframe 98780A Installation Locking rod pulled out I ...

Page 8: ...2 2 98780 Environmental Installation PM ...

Page 9: ...ase via the Alpha Control Assembly 98770 66534 and the Graphics Interface Assembly 09845 66504 Alpha information is stored in block 0 read write memory and is refreshed to the display via the IDA bus Graphics information is transfer red via the I O bus to the display where it is interpreted and entered into the display memory Status Word The Status Word may be obtained by executing the following i...

Page 10: ...3 2 98780 Configuration ...

Page 11: ...ill no display Adjust intensity control Press control stop Is there a cursor Initial Checks Action 98780 Troubleshooting 4 1 Chapter 4 Troubleshooting Yes Proceed with Initial Checks No Fix base Yes Proceed to Problem Charts No Proceed with Initial Checks Proceed to Problem Charts ...

Page 12: ...lay Improper or incorrect characters Characters missing every other line or incorrect Incorrect highlighting Alpha cursors missing or incorrect No alpha blanking Graphics Problem Chart Symptom No graphics display Extra or missing vectors Extra or missing arcs Improper or no area fill Improper line type or no line type control Random or repetitive dC ts either Tl ss ng or always on display Intermit...

Page 13: ...Mainframe 98780 66513 Heatsink A12 A14 Deflection Power Supply A21 Display Logic 98775 66504 light Pen All CRT Drive 18 volts Mainframe 98780 66513 Heatsink All CRT Drive Power Supply A12 A14 Deflection A21 Display Logic 98775 66504 light Pen 12 volts Mainframe A31 I O All CRT Drive A12 A14 Deflection Power Supply A511A52 Graphics 12 volts Mainframe A31 I O A12 Deflection A51 A52 Graphics Power Su...

Page 14: ...4 4 98780 Troubleshooting ...

Page 15: ...stem Exerciser Cartridge latch the AUTOST key and switch the power on or press LOA D A UT 0 5 T T 15 E ECUT E Answer the questions that appear and select ENHGR when the test choices appear ENHGR runs the complete sequence of tests automatically Selecting ENHGR MENU will give you the following test menu The display tests are listed and described in the order they are performed in the Auto Cycle mod...

Page 16: ...ssible to achieve perfect focus in all areas of the display L Linearity Press L various characters appear in a pattern This test is used to check linearity at the factory It is not intended for field use B Full Line Buffer Press B the CRT displays This test checks the 80 character line buffers on the A34 assembly left leg plus the ability to display information K Soft Keys Press K then press each ...

Page 17: ...ensity Press I the following display appears to show all the various display intensities video mixer test Press continue the large square of the previous display becomes bright light pen bit test Press continue to select another test ...

Page 18: ... 1t t f Ii f t f li r J 1 f 8 0123456789 E i E i E r1i H iq f i E f Lt MTIf fF I i t t t fi it f Ii I J 01 45678 n t i i rli H i i tn 1t 1 iII1t L Lf I1L Tj ltn 1t l hTl1 L Lf I l T tk Hl hl1 htl 1tn 1i I r ill t L Lf I j T ltn 1t l rITl1 L Lf Illr l T B 1 1nk 1ng C I 01 1tn 1t I r dt L Lf I l Tltn 1t l rill1t L Lf I j T E link rlg Chat t o t E r u d Itr cr JH lLl f JJ j tIT t hr t Itr drlLl f JJ ...

Page 19: ...rious linetypes are displayed See the following photo 1 1lJ iiifi5iiiiiiiiii 1 1 9 I I C 1 I Press continue the following display appears This demonstrates the vector drawing ability 1 Press continue the vectors drawn in the previous display are erased ...

Page 20: ...below Press continue the arcs shown in the previous display are erased Press continue the various area fill patterns are displayed 15 14 1 3 L2 11 1 1 j t ft it 1111 JJlj l rBII IJF1 111 _fIIItII aJj _n _ 5 j i W j 1 i l iji Cii 2 2 h W 5 4 3 Press continue to select another test ...

Page 21: ...s T a box and a diagonal line are displayed The full screen crosshair cursor is in the lower left corner Press continue the full screen crosshair cursor moves from the lower left corner to the upper right corner Then the small crosshair cursor is displayed Press continue the small blinking underline cursor appears Press continue the rubberband capabilities are shown See the following photo Press c...

Page 22: ...ight pen s field of view value is displayed The value should be between 10 and 50 After picking the cursor a box with a diagonal line appears The light pen cursor moves from the lower left corner to the upper right corner Press continue With the light pen place the light pen cursor at each corner of the box starting with corner number 1 Press the light pen pick button at each corner Press continue...

Page 23: ... and probes to measure 800 volts Adjustment High Voltage Intensity Focus Table 6 1 Horizontal Center and Width Vertical Center and Height Top and Bottom Pincushion Assembly Replaced Perform Procedure on Page 6 3 63 6 4 6 4 6 4 6 5 CRT yoke All adjustments except high voltage see Table 6 1 High Voltage Transformer High Voltage Focus and Intensity All Intensity and Focus A12 Horizontal Center and Wi...

Page 24: ...cover and the metal top shield Refer to Figure 6 1 for adjustment locations Intensity Focus High Voltage Horizontal Center Horizontal Width Bottom Pincushion Top Pincushion Vertical Center Vertical Height 800 Volt Test Point Figure 6 1 Adjustment Locations A21 Test Switch T Normal t Test ...

Page 25: ...ntil horizontal retrace lines appear on the display Adjust the All intensity control counter clockwise until the retrace lines are no longer visible Note that the brightest retrace line appears at the top of the display 3 Turn the All intensity control an additional ten degrees counter clockwise approx imately 4 Adjust the external intensity control for the desired intensity Revision D and E Proce...

Page 26: ...09845 92041 rev C to display the focus pattern Load the 98780A tests and press F Turn the focus control to achieve the best overall focus of the displayed characters This is usually a trade off between best corner focus and best center focus Horizontal Center and Width These adjustments center the raster on the CRT screen and determine the width of the raster Set the A21 test switch to the test po...

Page 27: ... in the raster corners Set the A21 test switch to the test position forward to display a full white raster The following drawings show correct and incorrect pincushion adjustment Adjust the top and bottom controls for straight raster sides Set the test switch to its normal position loconoe Correct I ...

Page 28: ...6 6 98780 Adjustments ...

Page 29: ...98780 Peripherals 7 1 Chapter 7 Peripherals I ...

Page 30: ...7 2 98780 Peripherals ...

Page 31: ... to the component level either on site or at the local field office This procedure is recommended only when replaceable components are not soldered in or when the probability of inducing further damage in the course of doing the repair is minimal All components which may be replaced by the CE are listed as level 2 parts under the assembly part number in the parts lists Other failures should be rep...

Page 32: ...nnector PC 12 pin Polarizing key Connector PC 44 pin Connector PC 36 pin Connector PC 20 pin Connector PC 30 pin Connector PC 50 pin Connector 3 pin male Connector 4 pin male Connector 2 pin male Connector 36 pin Inductor Tube Drive Assy Sweep Assy old version See 98780 66514 Power Transistor Assy Transistor 2N5875 Transistor 2N5877 Transistor Transistor Sweep Assy Exchange part 98780 69514 Displa...

Page 33: ...cement Parts 8 3 02 High Voltage Driver 1854 0782 03 Horizontal Driver 1854 0818 05 Horizontal Correction Amplifier 1853 0305 04 Horizontal Correction Amplifier 1854 0518 Al3 Heatsink Transistors 1251 4326 1251 1365 1251 2915 1251 0472 1251 0472 A4 Motherboard Connectors 98780 90039 rev 1283 I ...

Page 34: ...8 4 98780 Replacement Parts ...

Page 35: ...gic Assembly 98780 66521 A21 98780 Diagrams 9 1 Chapter 9 Diagrams iiO Logic Assembiy 98780 66531 A31 or 98780 66532 A32 Light Pen Assembly 98775 66504 Graphics Logic Assembly 98780 66551 A51 or 98780 66552 A52 Assemblies Under the Top Metal Shield Assemblies in High Voltage Cage 98780 90039 rev 12 83 I ...

Page 36: ...eral Sync Memory Compo DMAEN Direct Memory Access Enable RAS Row Address Select DMAR Direct Memory Access Request RNP Reset New Page DSP Display SMC Store Memory Control EOL End of line SR Service Request FLB Full line Buffer STM Start Memory G D 9845 Select line SVC Start Vector Calculation GINT Graphics Intensify TCK Buffered Mainframe Clock GVID Graphics Video UL Underline HGB Horizontal Graphi...

Page 37: ... 0 00 J 00 o o iii c a 3 ...

Page 38: ...mle H v Generator X Counter Load HorrzontalLlne Vertical Window Cursor 100 Bus 0 Video Mixer r H e From Mainframe From Full BflghlIn Display Log A21 To Full Bflght Out Video Mixer A31 From HAS Display Log A21 From 1 Graphics R41n Logic LPRQ A51 ...

Page 39: ...98780 Reference 10 1 Chapter 10 Reference I ...

Page 40: ...10 2 98780 Reference ...

Page 41: ...98780 Service Notes 11 1 Chapter 11 Service Notes I ...

Page 42: ...11 2 98780 Service Notes ...

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