AOC VGA1581, Руководство по обслуживанию

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15" CDT Color Monitor VGA1581
1
Service
Service
Service
Horizontal Frequency
30-56 kHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Table Of Contents...................................................1
Revision List.......................................................2
I m p o r t a n t S a f e t y N o t i c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 . S p e c i f i c a t i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 . P r e c a u t i o n A n d N o t ic e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 - 1 s a f e t y P r e c a u t i o n s . . . . … . . . . . . . . . . . . . . . … . . . . . . . . . . . . . . 6
2-2 Product Safety Notice ..........................................6
2 - 3 S e r v i c e N o t i c e s . . . . . . . . . . . . . . . . . . . . … … … … . . . . . . 7
2-4 High Voltage Warning............................................7
3 . O p e r a t i n g I n s t r u c t i o n s . . . . .. . .. . .. . .. . … … . .. . .. . ... . . . 8
4 . A d j u s t m e n t . . . . . . . . . . . . . . . . . . … … … … . . . . . . . . . . . . . . . 9
4 -1. Adjustment Conditions And Precautions ...……........9
4-2. Main Adjustments.....................…………........9
4-3 Adjustment Methods........................................9
5.Circuit Description ..………………………............12
5-1.Micro Controller And Deflection Circuit .....…………...12
5-2.Transistor & Diode Circuit...............................14
6. Trouble Shooting Chart...........................…….............15
6-1.No Raster......……………………………….….....….....15
6-2. Abnormal Displays................………….…...….....…17
6-3. Hor./OSC/DEF/HV Circuit Fault................................18
6-4. Abnormal Horizontal Deflection...............................18
6-5. Abnormal Vertical Scanning............….....................19
6-6. Side-Pin Cushion Distortion.......………….........19
6-7. Poor Focus................................................19
6-8. Power Supply Trouble Shooting Chart.................20
7. Block Diagram.....................................................21
8. IC Block Diagrams...............................................23
9. PCB Layout.......................................................27
9-1 Main PCB Layout.................................................27
9-2 CRPC Board Layout...........................................29
10. Schematic Diagram.........................................30
11. Mechanical Of Cabinet Front Dis-Assembly..........31
12. BOM List...................…………............................32
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING