1-48 (No.YA098)
LB_PRO
---
SDA
---
WAKE
---
SDA
SDA
SDA
SDA
SDA
---
SDA
SDA
---
---
Confirm the operation of the low bais
(2.5V / 3.3V / 5V / 9V) protection circuit.
Q9822 [REGULATOR PWB]
Not used.
Confirmation of presence of video
sync signal.
M : Main sync signal
S : Sub sync signal
HD : Component sync signal
IC201 [ANALOG SIGNAL PWB]
Not used.
Confirmation of ACK (response)
signal which uses sync
communications with Chassis CPU.
IC7501 [DIGITAL SIGNAL PWB]
Not used.
Confirmation of reply of ACK signal
which uses I
2
C communication.
IC7602 [DIGITAL SIGNAL PWB]
Same as above.
IC301, IC501
[ANALOG SIGNAL PWB]
Same as above.
IC1001 [DIGITAL SIGNAL PWB]
Same as above.
IC3501 [RECEIVER PWB]
Same as above.
IC3001 [RECEIVER PWB]
Not used.
Confirmation of reply of ACK signal
which uses I
2
C communication.
IC3001 [DIGITAL SIGNAL PWB]
Same as above.
IC4001 [DIGITAL SIGNAL PWB]
Not used.
Not used.
Detection starts 3 seconds after the power is
turned on.
If error continues between 400ms, the power
is turned off.
Not used.
Confirmation of presence of sync signal in
video signal.
Not used.
If it checks whenever sync communication with
SHM performed , and no reply of ACK signal,
an error will be counted.
Not used.
If it checks whenever I
2
C communication is
performed, and no reply of ACK signal, an error
will be counted.
Same as above.
Same as above.
Same as above.
Same as above.
Not used.
If it checks whenever I
2
C communication is
performed, and no reply of ACK signal, an error
will be counted.
Same as above.
Not used.
Not used.
5.1.6 DETAILS
Self- check is performed for the following items.
Detection item
Item
name
Detection
signal (line)
Detection timing
Low bias line short
Fan lock
Presence of sync
signal
AC power input
Main CPU
communication
BS digital tuner
Main memory
AV select switch
3 dimensions YC
separator
Multi sound
processor
RF tuner
Ghost reduction
DIST process
RGB proccess
DVI (Digital
communication)
HDMI input
LOB
FAN
SYNC
TIM
MSM
DIGI
MEM
AVSW
YC
AIO
TUN
GCR
IP
RGB
DVI
HDMI
Detection content
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