Unless the result display is cleared to "0", the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.

Clearing the Result Display

To clear the result display to "0", press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:

ENTER

Channel 8

Quitting the Self-Diagnostic Screen

To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.

Self-Diagnostic Circuit

Y/CHROMA JUNGLE

FROM

C BOARD

IC702 PIN 5

FROM

A BOARD

IC501

PIN 1

+B overcurrent (OCP)

Occurs when an overcurrent on the +B (135V) line is detected by pin 72 of IC001 (M Board). If the voltage of pin 72 of IC001 (M Board) is less than 1V

when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

I-Prot

Occurs when an absence of the vertical deﬂ ection pulse is detected by pin 78 of IC001 (M Board). Power supply will shut down when waveform

interval exceeds 2 seconds.

IK (AKB)

If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC001 (M Board). TV will stay on, but

there will be no picture.

*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).

KV-27FS320/32FS120/32FS320/34FS120/36FS120/36FS320/38FS120

Sound Volume -

Power ON

Note that this differs from entering the Service Mode (Sound Volume + ).