1-26 (No.YA213)
5.1.6 DETAILS
Self check is performed for the following items:
< Page 1 of screen >
Detection item
Display
Detection content
Diagnosis
signal (line)
Detection timing
Low bias line short
protection
LOB
Confirm the operation of the low bais
(2.5V / 3.3V / 5V / 9V) protection circuit.
Q9822 [REGULATOR PWB]
LB_PRO
Detection starts 3 seconds after the
power is turned on.
If error continues between 400ms the
power is turned off.
Fan lock
FAN
Not used.
---
---
Presence of sync signal
SYNC Confirmation of presence of video
sync signal.
M : Main sync signal
S : Sub sync signal
HD : Component sync signal
IC201 [ANALOG SIGNAL PWB]
SDA
Confirmation of presence of sync signal
in video signal.
AC power input
TIM
Not used.
---
---
Main CPU
communication
MSM
Confirmation of ACK (response)
signal which uses sync communications
with Chassis CPU.
IC7601 [DIGITAL SIGNAL PWB]
WAKE
If it checks whenever sync communication
with SHM performed and no reply of ACK
signal an error will be counted.
Digital tuner
DIGI
Not used.
---
---
Main memory
MEM
Confirmation of reply of ACK signal
which uses I
2
C communication.
IC7602 [DIGITAL SIGNAL PWB]
SDA
If it checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.
AV select switch
AVSW Same as above.
IC301, IC501 [ANALOG SIGNAL PWB]
SDA
Same as above.
3 dimensions YC
separator
YC
Same as above.
IC1001 [DIGITAL SIGNAL PWB]
SDA
Same as above.
Multi sound processor
AIO
Same as above.
IC3101 [RECEIVER PWB]
SDA
Same as above.
RF tuner
TUN
Same as above.
TU3001 [RECEIVER PWB]
SDA
Same as above.
Ghost reduction
GCR
Not used.
---
---
DIST process
IP
Confirmation of reply of ACK signal
which uses I
2
C communication.
IC3001 [DIGITAL SIGNAL PWB]
SDA
If it checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.
RGB proccess
RGB
Same as above.
IC3001 [DIGITAL SIGNAL PWB]
SDA
Same as above.
DVI (Digital communication)
DVI
Not used.
---
---
Digital input
HDMI
Same as above.
IC8001 [DIGITAL SIGNAL PWB]
SDA
If it checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.
