Lamp Unit Replacement - Toshiba 52HM85 Service Manual

7. LED indications
The green and red LED lights on the TV control touchpad
(on the lower right corner of the TV screen)
indicate the TV's current status, as follows:
.
Green ON Solid (not blinking) = Control touchpad
.
Red ON Solid (not blinking) = Power ON.
.
Green and/or Red blinking
(see table below for condition and solution).
LED Indication
1 Red and Green turn off.
2 Red and Green turn off.
3 Red light solid and Green off.
4 Red and Green lights solid.
5 Green blinks at 1-second intervals;
Red off.
6 Green blinks at 0.3-second inter-
vals; Red lights solid.
7 Green lights solid and Red blinks
at 0.5-second intervals.
8 Green and Red blink at 1-second
intervals.
9 Red blinks at 0.5-second intervals;
Green off.
10 Red blinks at 1-second intervals;
Green off.
11 Red blinks three times; Green off.
12 Red and Green blink three times.
Control touchpad on TV front
TV/VIDEO
being pressed.
Condition
Power supply OFF. (AC)
Power supply OFF. (Standby)
(North America)
Power supply ON.
Touched the touchpad
Lamp LPS mode
The lamp is not working properly.
The lamp unit door is not seated
properly. (U)
The lamp is not working properly
after the eight automatic restart
(see item #7). (U)
FAN (Light engine unit) has
stopped.
BUS line is damaged
The color wheel has stopped.
Temperature rises abnormally.
(U) is restoration by the user.
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Solution
The TV automatically will try to restart
itself eight times.
Turn the POWER OFF and unplug the power
cord. Review "Lamp Unit Replacement" on
pages 8-10 to ensure that the lamp unit door
is installed securely.
Turn the POWER OFF and then ON again. If
the problem persists, replace the lamp unit
(see pages 8-10).
• Is the output voltage of the supply voltage
regulator for the FAN in the power circuit
normal?
• Has dust accumulated in the FAN?
If the output voltage is not abnormal,
replace the faulty FAN with a new one.
• Check the faulty device through the self
diagnostics function under SERVICE mode.
• Does BUS line (SCL, SDA) work normally?
If the BUS line is under abnor mal
conditions, replace the faulty device with
a new one.
• Is the output voltage of the power supply
circuit normal?
If the output voltage is normal, replace the
engine with a new one.
• Is the ventilating hole in the set (exhaust
slot on the rear) blocked or covered?
• Is FAN rotating normally?
• Has dust accumulated in the ventilating
hole?
If no abnormally conditions are found,
replace the engine with a new one.
POWER
Red indicator
Green indicator