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Computer monitors - CRT, TFT, LCD, touch screen, plasma display - service manuals and repair information| File information: | |
| File name: | dell p780 D99 chassis-troubleshooting manual.rar [preview p780 D99] |
| Size: | 511 kB |
| Extension: | |
| Mfg: | Dell |
| Model: | p780 D99 🔎 |
| Original: | p780 D99 🔎 |
| Descr: | dell p780 D99 chassis-troubleshooting manual |
| Group: | Electronics > Computer equipment > Monitors |
| Uploaded: | 09-03-2004 |
| User: | plamensl |
| Multipart: | No multipart |
| Information about the files in archive: | ||
| Decompress result: | OK | |
| Extracted files: | 1 | |
| File name | Text | |
| dell p780 D99 chassis-troubleshooting manual.pdf | D99 CHASSIS OPERATION MANUAL TROUBLESHOOTING MANUAL TABLE OF CONTENTS CIRCUIT DESCRIPTION D Board (Power Supply Section) ... 2 D Board (Deflection Section) ... 9 A Board ... 20 GENERAL TROUBLESHOOTING ... 26 PARTS LEVEL BOARD REPAIR ... 37 TRINITRON® COLOR COMPUTER DISPLAY -1- CIRCUIT DESCRIPTION D BOARD POWER SUPPLY SECTION Power Supply Electrical Circuit The power supply is located on the D Board. It has three modes of operation that are controlled by a microprocessor. The topology is a discontinuous mode flyback converter with photocoupler feedback for regulating the secondary voltages. Circuit operation and troubleshooting are explained in the following sections: Operation Modes AC Input Degauss Circuit Primary Circuitry Operation Modes Secondary Circuitry Protection Circuits Troubleshooting The power supply has four modes of operation, `off', `active off', `suspend/standby' and ` | |
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| 19-04-2005 | pizon | 3 |
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