Table of Contents
Advertisement
5.1.6 DETAILS
Self check is performed for the following items:
< Page 1 of screen >
Detection item
Display
Low
bias
line
short
protection
Abnormal
rise
of
temperature
in
audio
circuit
Presence of sync signal
SYNC Confirmation of presence of video
AC power input
Main CPU
MSM
communication
Digital tuner
Main memory
MEM
AV select switch
AVSW Same as above.
3 dimensions YC
separator
Multi sound processor
RF tuner
Ghost reduction
DIST process
RGB proccess
DVI (Digital communication)
Digital input
HDMI
1-24 (No.YA204)
Detection content
LOB
Confirmation of operation of the low bais
(2.5V / 3.3V / 5V / 9V) protection circuit.
Q9822 [REGULATOR PWB]
FAN
Confirmation of the temperature of
audio circuit.
sync signal.
M : Main sync signal
S : Sub sync signal
HD : Component sync signal
IC201 [ANALOG SIGNAL PWB]
TIM
Not used.
Not used.
DIGI
Not used.
Confirmation of reply of ACK signal
2
which uses I
C communication.
IC7602 [DIGITAL SIGNAL PWB]
IC301, IC501 [ANALOG SIGNAL PWB]
YC
Not used.
AIO
Not used.
TUN
Confirmation of reply of ACK signal
2
which uses I
C communication.
TU3001 [RECEIVER PWB]
GCR
Not used.
IP
Confirmation of reply of ACK signal
2
which uses I
C communication.
IC3001 [DIGITAL SIGNAL PWB]
RGB
Confirmation of reply of ACK signal
2
which uses I
C communication.
IC3001 [DIGITAL SIGNAL PWB]
DVI
Not used.
Not used.
Diagnosis
Detection timing
signal (line)
LB_PRO
Detection starts 3 seconds after the
power is turned on.
If error continues between 400ms the
power is turned off.
SDA
Detection starts 3 seconds after the
power is turned on.
If error continues between 3 seconds
the power is turned off.
SDA
Confirmation of presence of sync signal
in video signal.
---
---
---
SDA
If it checks whenever I
is performed and no reply of ACK signal
an error will be counted.
SDA
Same as above.
---
---
SDA
If it checks whenever I
is performed and no reply of ACK signal
an error will be counted.
---
SDA
If it checks whenever I
is performed and no reply of ACK signal
an error will be counted.
SDA
If it checks whenever I
is performed and no reply of ACK signal
an error will be counted.
---
---
---
---
---
2
C communication
---
---
2
C communication
---
2
C communication
2
C communication
---
---
Advertisement
Chapters
Table of Contents
