- When a malfunction occurs the TIMER/STAND BY indicator only blinks for one of the following diagnosis items. In case oftwo 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.
- One blink is not used for self-diagnosis.
SELF DIAGNOSIS SCREEN
Screen Display Method
- Quickly press the remote command button in the following order from the standby state.
- DISPLAY à Channel 5 à VOL – à POWER
- 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.
- 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
- Power off (Set to the standby mode)
- DISPLAY à Channel 5 àVOL + à POWER (Service Mode)
- Channel 8 à ENTER (Test reset = Factory preset condition).
Method of Ending Self Diagnosis Screen: 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 detects 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.
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