SONY KVES34M91
Manual de Servicio

KV-ES34M81/ES34M91
RM-916

6.

SELF-DIAGNOSTIC CIRCUIT

IC4301 RGB JUNGLE OVP OCP FROM CRT (IK) [H] IC6801 [V] D6806/D6801 3 25 IKIN 6 20 XRAY

IC001 SYSTEM SDA 5

IC003 MEMORY

LED 54 16 V PROT SDA 5 CXA2100Q IC004 MEMORY

[+B overcurrent ªOCPº]

Occurs when an overcurrent on the +B(135) line is detected by Q6610 and Q6609. If Q6610 and Q6609 go to ON, the voltage to the pin3 of IC001 go to UP. The unit will automatically turn off. Occurs when an overvoltage on the +B(135) line is detected by D6635, Q6611 and Q6612. If Q6611 and Q6612 go to ON, the voltage to pin6 of IC001 go to UP. The unit will automatically turn off. Occurs when an absence of the vertical deflection pulse is detected by Q6811, Q6819, Q6820, Q6821 and D6801. Shut down the power supply. If the RGB levels do not balance or become low level within 5 seconds. This error will be detected by IC4301. TV will stay on, but there will be no picture. Occurs when an overvoltage of horizontal pulse is detected by D6809 and IC6801. If the voltage of 7 pin of IC6801 goes to High, the voltage to pin20 of IC4301 go to UP. The unit will automatically turn off.

[+B overvoltage ªOVPº]

[Vertical deflection failure] [White balance failure]

[High voltage protector of Horizontal Deflection]

�7�