Speco-technologies VM-1201 Manual do Utilizador Página 1

MODEL ： VM-1201 REVISION ： A0 DATE ： MAY. 21. 2001 DOCUMENT NUMBER ： SERVICE MANUAL

black level is stored at pin7 by C404. The slicing level is stored at pin6 by C403 and decided by R403. 2.3.4 Phase detector: The phase

• • • • Flyback generator： ‧ U301 pin6 is the output of the flyback generator that when driven, jumps from low to high condition C305 transfers the ju

3.1.5 If driving pulses at U901 pin6 and drain of Q901 are correct but voltage at U901 pin 7 low than threshold voltage --causing U901 to stop and res

Appendix A. Spare Parts List Location Parts Number Description F901 28-1100-0006 Fuse, 2A/250V, slow blow D901 06-3100-0005 Diode 3A, 600V, RS407

Appendix B. Schematics and PCB Layout Diagram 1. Schematics Page 1 -- Main Board, Video Board. 2. Schematics Page 2 – Power Supply, Video Amplifier

1 2 3 4 56ABCD654321DCBATitleNumber RevisionSizeBDate: Sheet of File: G25G47K2HGND4HEAT3G116J501CRT SOCKETVR5012MBR515330KR64.7 1/4W123W204C21047

1 2 3 4 5 6 78ABCD87654321DCBATitleNumber RevisionSizeDate: File: Drawn By:123456789 101112131415161718U401 TDA2579C411103R21715KR4102.2KR40618KR41

WARNING ========== For continuous protection against radiation, shock and flame, replace only with same type and rating components specified in the ap

2.4 VERTICAL DEFLECTION BLOCK...……………………..………... 8 2.5 HORIZONTAL DEFLECTION BLOCK...

Audience This service manual is primarily for system / service engineers, distributors and dealers. It carries the assumption that the reader un

1.1.2 Signal Input Requirements ‧ Connector For CVBS：BNC terminal Type：composite video input Level：1.0Vp-p Synchronous：0.3

• • • • • Temperature ：25 ±5℃ Magnetic field ：No additional magnetic field in near side AC line Input ：100 ~ 240 VAC ±10%, 50/60 ±3Hz Warm-up

‧ Picture geometry：≦ 2.5% ‧ Picture centering：≦ 6mm ‧ Size stability：Picture luminance from 5 FL to max., the size shall be less than 2.5% (with full

This section describes each functional block of the monitor. 2.1 Main Power Supply Block • • • • • • • • • • • • AC power input：AC socket Line input

• • • • • • Snubber circuit：Snubber C907, D902, R902. Primary side self-powering circuit：D903,C914. Output 13.5 volts for vertical & horizontal dr