Panasonic SX-PR804P, Service Manual

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Press all the buttons on the Control Panel and confirm that the corresponding LED
lights.
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If an LED fails to light, the cause may be a defective switch or a break in the
surrounding circuit, etc.
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After all the buttons have been pressed, all the PANEL MEMORY LEDs light.
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To light CPL LEDs, press and hold the DEMO button.To light CPC LEDs, press and
hold the HELP button.To light CPR LEDs, press and hold the PANEL MEMORY SET
button. If an LED fails to light, the LED may be defective or there may be a break in
the surrounding circuit.
8.6. LCD module test (LCD adjustment and confirmation)
Figure-22
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Press the BW, CROSSTALK, SAMPLE or CONTRAST button to begin the respective
test.
RSBWB:
All the dots light in red, green, blue, sky blue and black. The display can be held by
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