Read Sony DPP-EX50 Service Manual online
3-10
DPP-EX50 V1
(Screen 3-12)
(Screen 3-13)
Key operation check
Press the key on the operation panel of this unit. The pressed key is displayed in yellow on the color
monitor.
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Do not press the Power key. If the Power key is pressed, the power is turned off and the unit enters
standby state.
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Do not press the Power key. If the Power key is pressed, the power is turned off and the unit enters
standby state.
LED operation check
“Access LED” and “TV output LED” are lit during “Button Test”. When all keys are pressed, “Access
LED” and “TV output LED” start blinking.
LED” and “TV output LED” start blinking.
LCD operation check
All segment become ON during “Button Test”. When all 12 keys are pressed, all segment start blinking.
Fan operation check
The fan rotates by force during “Button Test”.
Buzzer check
When all 12 keys are pressed, the buzzer makes a “beep sound” and the all keys on the color monitor are
displayed in red.
displayed in red.
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