Sharp LC-52XS1E Service Manual page 40

LC-52XS1E/RU/LC-65XS1E/RU
4) Communication unusual details (Power blue LED blinking once + OPC (reservation) LED blinking)
4') STB communication abnormal details (Power green LED blinking once + OPC (reservation) LED blinking)
Kind of error OPC LED operation (1 cycle)
Initial communi- H: lighting
cation reception
abnormal
L: erase lighting
Blinking once
Start fixation H: lighting
reception abnor-
mal
L: erase lighting
Blinking twice
Regular commu- H: lighting
nication abnormal
Three time blink-
L: erase lighting
ing
H: lighting
L: erase lighting
Four time blinking
Other communi- H: lighting
cation abnormal
Five time blinking
L: erase lighting
5 Another abnormal details (Power blue LED blinking twice + OPC LED blinking)
5') STB another abnormal details (Power green LED blinking twice + OPC LED blinking)
Kind of error OPC LED operation (1cycle)
Monitor tempera- H: lighting
ture abnormal
L: erase lighting
Blinking once
Synchronization H: lighting
abnormal
Blinking twice
L: erase lighting
Main microcom- H: lighting
puter end demand
(main temperature,
L: erase lighting
others)
Three time blinking
* (only STB) H: lighting
FAN error (only
STB)
L: erase lighting
Four time blinking
H: lighting
Five time blinking L: erase lighting
Remarks
Basically the log of the debugging print sentence is analyzed and it
analyzes it by the bus monitor the communication log.
The first communication cannot be received. (Monitor part number
demand un-receiving.)
→communication line abnormal. Main CPU start trouble
The start reason fixation from main CPU cannot be received.
(The start communication to the start reason notification command is
un received.)
→Main CPU start trouble. Monitor microcomputer reception trouble.
The regular communication done every second at the normal operation
becomes interrupted.
→Main CPU operation trouble. Monitor microcomputer reception trou-
ble
The request demand command doesn't come from main CPU to
demand (PM_REQ=H) by the monitor microcomputer.
→Main CPU operation trouble. Monitor microcomputer reception trou-
ble.
Remarks
The pin is a monitor microcomputer pin.
CAUTION display of 60°C or more in temperature of panel by contin-
uation for 15 seconds or more (It depends on OSD (It is a red blinking
character in lower right).)
Error standby display of 60°C or more in temperature of panel by con-
tinuation for 25 seconds or more
(MONITOR MAX TEMP of process A on page 39/46: Change of
abnormal AD value of temperature):thermistor
FRC_DETECT(46pin) abnormal. Synchronizing signal abnormal.
Detection when operating (polling)
It is error standby at consecutive ten-time NG in a cycle of 100ms.
The state which received the forced-termination demand from a main
microcomputer.
Details are described to the reason of the error of the process menu
of the main microcomputer.
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