Sony KP-43HT20-53HS20-53HS30-61HS20-61HS30 – LED blinking codes and details – Self diagnosis function

Applicable to:
KP-43HT20 RM-Y908 US SCC-P65C-A
KP-43HT20 RM-Y908 CAN SCC-P65C-A
KP-53HS20 RM-Y908 US SCC-P65D-A
KP-53HS20 RM-Y908 CAN SCC-P65D-A
KP-53HS30 RM-Y908 US SCC-P65A-A
KP-53HS30 RM-Y908 CAN SCC-P65A-A
KP-61HS20 RM-Y908 US SCC-P65E-A
KP-61HS20 RM-Y908 CAN SCC-P65E-A
KP-61HS30 RM-Y908 US SCC-P65B-A
KP-61HS30 RM-Y908 CAN SCC-P65B-A

Summary of Self-Diagnosis Function

This device includes a self-diagnosis function.

• In case of abnormalities, the TIMER/STAND BY indicator automatically blinks. It is possible to predict the abnormality location by the number of blinks. The Instruction Manual describes blinking of the TIMER/STAND BY indicator.

• If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated or not. Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.

Diagnosis Items and Prediction of Malfunction Location

• When a malfunction occurs the TIMER/STAND BY indicator only blinks for one of the following diagnosis items. In case of two or more malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the item with the lower blink count blinks first.

• The screen display displays the results regarding all the diagnosis items listed below. The display “ 0 ” means that no malfunctions occurred.

Note1: If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The sympton that is diagnosed first by the microcontroller is displayed on screen.

Note 2: Refer to Screen (G2) Adjustment in Section 3-1, 2 of this manual.

Note 3: If TIMER/STANDBY indicator blinks six (6) times, unplug the unit and wait 10 minutes before performing the adjustment.

Click on the pictures to magnify

Blinking count display of TIMER/STAND BY indicator

* One blink is not used for self-diagnosis.

PWB [Circuit board] Location inside the TV

Release of TIMER/STAND BY indicator blinking.

• The TIMER/STAND BY indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the power.

Self-diagnosis screen displays

• In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the screen disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the detection circuit operated or not) in order to allow confirmation.

Screen Display Method
• Quickly press the remote command button in the following order from the standby state.

Self-Diagnosis Screen Display

• The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to return the results display to “ 0 ”.

• If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.

Method of Clearing Results Display

1. Power off (Set to the standby mode)

2. DISPLAY è Channel 5 è VOL + è POWER (Service Mode)

3. Channel 8 è ENTER (Test reset = Factory preset condition)

Method of Ending Self Diagnosis Screen
• When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.

Self-diagnosis function operation

OCP > Low B and +B line detect DET SHORT, and shut-down POWER ON RELAY.

Reset by turning power on/off.

In case of +B is loaded approx. 1.5A or more, microcomputer detects it via IC5005

OVP > In case of +B becomes approx. 150V or more, POWER ON RELAY shuts down and microcomputer detects it via IC5005.

Reset by turning power on/off just the same as OCP.

Low B > Occurs when set +5V is out

V Stop > In case of V Drive disappeared, Q8001 detecs it and shut-down POWER ON RELAY. Microcomputer detects it and makes LED blinking.

AKB > IK detection. Makes LED blinking in case of microcomputer doesn’t detect IK returns of IC309 (CXA2150AQ) 20 seconds or more.

H Stop > In case of H DRIVE is disappeared, Q378 detects it and shut-down POWER ON RELAY shuts down.

Microcomputer receives H Stop data from Q378 and makes LED blinking.

HV > Stop In case of HV becomes 33KV or more. IC8006 detects it and shut-down

POWER ON RELAY. Microcomputer makes LED blinking.

Audio In case of DC component overlaps the output of Audio Amp., POWER ON RELAY shuts down.

Microcomputer detects it and makes LED blinking.