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LC-37D90U

6 – 2

(Remarks)

Check D4705 and D4706 for defects. Check the primary-side parts

for defects. See if the second-

ary output is short-circuited.

YES

Is there the PNL12V output?

Is PNL_POW (pin (4) of CN5702) at High (about 3.3V)?

YES

Check the PNL12V series regulator

circuit.

Check the main unit for trou-

ble.

Turn on the power again and make sure the set functions

as specified.

Status of the set

PS_ON

(CN5702(1))

PNL_POW

(CN5702(4))

BU5V

(CN5702(5))

UR6V

(CN5701(1))

UR10V

(CN5701(7))

UR13V

(CN5701(11))

PNL12V

(CN5701(3))

24V

(CN5703(1))

STDBY

MODE1 High High 5V 6V 10V 13V 12V 24V

MODE2 Low Low 5V - - - - -

PowerON High High 5V 6V 10V 13V 12V 24V

Sharp LC-37D90U User Manual

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