Sharp LC-50U35T, Service Manual

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LC50/58/65U35T
6 – 1
CHAPTER 6.
TROUBLESHOOTING
TABLE
[1] TROUBLESHOOTING TABLE
[1] Failure diagnosis by LED in front of cabinet
[2] LED flashing specification at the time of an error (POWER LED used)
1. Display method
• Since only the POWER LED can be used, slow flashing and fast flashing are combined.
• After recovering from an error, if the same error cannot be generated again, refer to MONITOR ERR CAUSE on the adjustment process mode.
2. LED flashing method
Error flashing
Table 1. Concrete flashing pattern
*2: They depend on the system. Power supply error is defined from product to product.
*3: For details, refer to ERROR STANDBY CAUSE on the adjustment process mode.
Item
Detail display
Cause
Slow flashing Fast flashing
Inverter/Lamp system failure Flashes once Flashes once Lamp error
Power PWB failure Flashes twice Flashes twice Power supplly error (*2) UR+13V error
r o r r e ) V 3 . 3 D ( E R O C V ) 2 * ( r o r r e y ll p p u s r e w o P s e m i t 3 s e h s a l F ) . c t e , e r u li a f r e w o P (
Main PWB failure
(Communitacion failure, etc.) Flashes 3 times Flashes 3 times Regular communication error
Others
Flashes 4 times
Flashes once Temperature error
No
Yes
No
Yes
No
Yes
Is the POWER LED flashing?
START
Is the POWER LED lighting
When AC plug on?
Is the Backlight lighting?
Check "[2] LED flashing specification at the time of an error (POWER LED used)".
Check Power-Unit and AC-cable.
Check " LED Backlight does not turn on.".
Check " Picture does not display.".
1600ms
300ms
100ms
400ms
400ms
1600ms
OFF
ON
POWER LED