Toshiba 40RF350U Service Manual page 13

© 2007 Toshiba America Consumer Products, LLC.
NO
Is
24 VDC present
NO
at pins 1 through 5 of
P804 when the unit is
turned
on?
Replace the
Main Power
NO
supply.
Is
YES
3.3 VDC present at
pin 18 of P811 shortly
after the unit is turned
on?
Replace the
Low B power
supply.
12
YES
Does the back light
function and then turn
off?
If it is available , try the
CCF inverter. If this does
YES
not help, replace the LCD
display. ***
Is
YES
12VDC present at pin
14 of CN90 when the
unit is turned on?
*** Warranty Concession
required for LCD panel
replacement. Digital photo
NO
may be requested.
Contact Technical
Support.
Replace the
SYSCON
section.
SMART200706_20Q1.1.0
SMART200706_Version LCD 2.0 Page 5 of 8
Page 5 of 8