Philips 107B7 manual Service

17” CDT Color Monitor 107B7

Service

Service

Service

Horizontal Frequency 30-86 kHz

TABLE OF CONTENTS

Description Page Description Page

Table Of		Contents		1
Revision		List		2
Important Safety			Notice	3
1	. Specifications			4
2	. Precaution and		notices	7
2	-1Safety precautions....…...............…..............7
2-2 Product safety notice				7
2	- 3 Service Notices ....................…………...... 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
13	PCB layout	55
13-1 Main PCB layout		55
13-2. CRPC board layout		56
14.	Schematic diagram	57
15. General Product Specification…………………………61

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.

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

GB 3138 106 10530

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