(No.YA387)1-31
5.1.6 DETAILS
Self check is performed for the following items:
5.1.6.1
PAGE 1 OF SCREEN
5.1.6.2
PAGE 2 OF SCREEN
Detection item
Display
Detection content
Diagnosis
signal (line)
Detection timing
X-ray protection
X-RAY
Not used.
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B1 over-current
protection
OCP
Not used.
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---
Low bias line short
protection
LOB
Not used.
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---
Timer (clock)
TIM
The power frequency is changed as
follows: 50Hz
→
60Hz / 60Hz
→
50Hz.
IC201
[MAIN PWB]
AC_IN
Detection starts 3 seconds after the
power is turned on. Periodically check the
power frequency by counting the AC
pulse and monitor whether or not the
frequency is changed.
Photo ditect
PHOTO
Not used.
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---
DTVM and TVM
communication
Hostlink
Communication error between the
digital TV microcomputer and the TV
microcomputer is detected.
IC201
[MAIN PWB]
SDA
Check communication errors by counting
the number of reset exception handling.
Fan lock
FAN
Not used.
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Detection item
Display
Detection content
Diagnosis
signal (line)
Detection timing
US audio multiplexing
decoder
MTS
Confirmation of reply of ACK signal
which uses I2C communication.
SDA
If it checks whenever I2C communication
is performed and no reply of ACK signal
an error will be counted.
Tone/volume control
TONE
Same as above.
SDA
Same as above.
AV select switch
AVSW
Same as above.
SDA
Same as above.
Component signal
select switch
CompSW Not used.
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A-D converter for
component signal
ADC
Confirmation of reply of ACK signal
which uses I2C communication.
SDA
If it checks whenever I2C communication
is performed and no reply of ACK signal
an error will be counted.
Tuner
TUNER
Same as above.
SDA
Same as above.
A-D converter for audio Audio ADC Not used.
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Digital input
HDMI
Not used.
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RGB/Def process
RGB/DEF Confirmation of reply of ACK signal
which uses I2C communication.
IC201
[MAIN PWB]
SDA
If it checks whenever I2C communication
is performed and no reply of ACK signal
an error will be counted.
Memory
A-EEPROM Confirmation of reply of ACK signal
which uses I2C communication.
IC702
[MAIN PWB]
SDA
Same as above.