SONY KDF55WF655
Manual de Servicio

KDF-55WF655/60WF655
Clearing the Result Display To clear the result display to �0�, press the buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below: 1. If the screen is already displayed, proceed to step 3. If not, Power off (Set to Standby model). 2. Press Display Channel 5 Sound Volume Power ON 3. Press Channel 8 ENTER

Clearing the Self-Diagnostic Screen The self diagnosis screen display is cleared by turning off the set using the Remote Commander or the power switch. Self-Diagnostic Circuit Self-Diagnosis Function Operation 3 4 4 : : : Lamp cover Fan Temp The rib at the back of the lamp cover closes the SW on the T board to ground pin 3 of CN8001. It is monitored by the DE-micro (pin 94 of IC6902) and turns off the lamp when it is opened. Fan rotation is detected by "FAN-PROT" and the DE-micro (pin 92 of IC6902) turns off the lamp when it is "high". When the temperature sensor on the H3 board (WE models) or H4 board (WF/XS models) detects high temperature, or IIC-E line connector (CN6022:G2 board, CN44:H3board/H4board) is not seated securely, the DE-micro turns off the lamp. When the "LAMP-PROT" (pin 95) is low, the lamp is not turned on. If the "LAMP-HV-DET" (pin 96) is low at the same time, it is classified as no high voltage of the lamp driver. When no "DD 6V " is detected, pin 129 of TV-micro is low and it turns off the main power. When DC voltage is detected at the speaker or woofer outputs, pin 128 of TV-micro is low and it turns off the main power. When overvoltage of "+3.3V" or "+2.5V" is detected, pin 126 of TV-micro is low and it turns off the main power. When no "Digital Module 5V" is detected, pin 127 of TV-micro is low and it turns off the main power. When the "LAMP-PROT" (pin 95) is low, the lamp is not turned on. If the "LAMP-HV-DET" (pin96) is high at the same time, it is classified as no lamp or a dead lamp.

5 6 7 8 10 LAMP

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Lamp driver Low B error Audio D-OVP ATSC-OVP Lamp

KDF-55WF655/60WF655

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