Read Sharp LC-46DH77E (serv.man5) Service Manual online
LC-42DH77E/RU/S/V, LC-46DH77E/RU/S/V
4 – 14
[2] LED flashing specification at the time of the error
Display method
• Refer to Table 1.
• Make the OPC LED flash using the [MENU] key on the remote control since the display for service persons is identified by the number of flashings
(once to 5 times).
Even if the [MENU] key is pressed again, it does not return to the display for customers (only the power LED flashes).
• After recovering from an error, if the same error cannot be generated again, refer to MONITOR ERR CAUSE on the adjustment process screen.
LED flashing method
• Synchronize the phases of the power LED and OPC LED.
• If the LEDs have different number of flashings, adjust the flashing cycle to that where the LED flashes more times.
Table 1. Concrete flashing pattern
* 1: For details, refer to ERROR STANDBY CAUSE on the adjustment process screen.
* 2: If the boot section is abnormal, there is no flashing (flashing disabled).
Item
For customers
For service persons
Cause
Power
OPC
Power
OPC
Inverter/Lamp system failure
Red flashes once
Off
Red flashes once
Flashes once
Lamp error
Power PWB failure (Power
failure, etc.)
failure, etc.)
Red flashes twice
Off
Red flashes twice
Flashes once
AC_DET error
Flashes twice
UR+13.5V error
Flashes 3 times
D3.3V error
Flashes 5 times
Panel power supply error
Main PWB failure
Green flashes once
Off
Green flashes once
Flashes once
Initial communication error
(Communication failure, etc.)
Flashes twice
Start-up confirmation commu-
nication error
nication error
Flashes 3 times
Regular communication error
Flashes 5 times
Other communication error
Others
Green flashes twice
Off
Green flashes twice
Flashes once
Temperature error
Flashes twice
Sync error
Flashes 3 times
Notification from the main
microprocessor (*1)
microprocessor (*1)
VerUP executing
Orange flashes once
Off
Orange flashes once Off
Version upgrading
VerUP succeeded
Power green/OPC flash alternately
Power green/OPC flash alternately
Version upgrade succeeded
VerUP failed
Green/Red flash
alternately
alternately
Off
Green/Red flash
alternately
alternately
Off
Version upgrade failed
System
Red flashes 3 times
Off
Red flashes 3 times
Off
Mounting discrimination con-
nector unplugged
nector unplugged
ROM data failure
Green/Red flash
alternately
alternately
Off
Green/Red flash
alternately
alternately
Off
Start-up after failing version
upgrade (*2)
upgrade (*2)
<Flashing example for customers>
Power
<Flashing example for service persons>
Power
OPC
(Displayed by the
specific operation)
(Displayed by the
specific operation)
300ms
300ms
1500ms
300ms
1500ms
300ms
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