Great user manuals database on
17” CDT Color Monitor 107B7
1
Service
Service
Service
Horizontal Frequency
30-86 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.
3138 106 10530
Table Of Contents...................................................1
Revision List.......................................................2
Important Safet y Notice................. .............. ..3
1 . S p e c i f i c a t io n s . . . . .. . .. .. . . . . . .. . . . . . . .. . . . . .. .. . .. . .. . . 4
2. Precaution and notices................................7
2-1Safety precautions....…...............…..............7
2-2 Product safety notice ..........................................7
2 - 3 S e r vi c e No t i c e s . . . . . . . .. . . .. .. . .. .. … … … … . . . . . . 7
2-4 High voltage warning............................................8
3. Operating Instructions................…………….............9
4. Adjustment .........................……………………….......10
4 -1. Adjustment conditions and precautions ...……........10
4-2. Main adjustments.........…………………...................10
4-3 Adjustment methods........................................13
4-4 DDC Instructions………………………….……….…….17
5.Circuit description ..……..……………………............22
5-1.Micro controller and deflection circuit .………….......22
5-2.Transistor & diode circuit...............................24
6.Mechanical Instructions......................…………….......25
7.Trouble shooting chart..........................……….......28
7-1.Noraster,CRT relative circuit problems...........……........28
7-2. Abnormal displays................………………………..…...30
7-3 No blanking................................................31
7-4 Hor./OSC/DEF/HV circuit fault................................31
7-5. Abnormal horizontal deflection...................................32
7-6. Abnormal vertical scanning............…........................33
7-7. Side-pin cushion distortion.........………………........33
7-8. Poor focus...................................…….............33
7-9. Power supply trouble shooting chart.................35
8. Mechanical of cabinet front dis-assembly...………......35
9. Spare parts list..........................................36
10. Different parts list..........................................47
11 Block diagram............................................48
12 IC block diagrams.............................................49
1 3 P C B l a y o u t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
13-1 Main PCB layout..........................................55
13-2. CRPC board layout.........................................56
14. Schematic diagram.........................................57
15. General Product Specification…………………………61
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
GB
