JVC HD-52Z575 사용자 설명서
(No.YA092B)1-35
5.1.6 DETAILS
Self-check is performed for the following items.
Self-check is performed for the following items.
Check item
Display
Description of detection
Diagnosis
signal (line)
Means of detection
Low bias line short
protection
protection
LOB
Low bias line (9V / 5V) short protector
activated.
Confirm the operation of the low bais
Confirm the operation of the low bais
protection circuit.
[Q2802 /Q2801] (REGULATOR PWB)
[Q2802 /Q2801] (REGULATOR PWB)
Protector
Detection starts 3 seconds upon power
on Turns off power if NG is detected
within 400ms.
Fan lock (stop)
FAN
Confirmation of operating stop of heat
cooling fan.
[IC8005 : 1 / 2 / 4 / 5-pin]
(FAN CONTROL PWB)
[IC8005 : 1 / 2 / 4 / 5-pin]
(FAN CONTROL PWB)
Protector
Detection starts 3 seconds upon power
on Turns off power if NG is detected
within 250ms.
AC timer clock
TIM
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)
signal.
M : Main sync signal
S : Sub sync signal
HD : Component sync signal
[IC201] (ANALOG SIGNAL PWB)
SDA
Confirmation of presence of video sync
signal.
signal.
MAIN CPU
communication
communication
MSM
Confirmation of ACK (response) signal
which used sync communications with
Chassis CPU.
[IC7601] (DIGITAL SIGNAL PWB)
which used 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.
communication with SHM performed and
no reply of ACK signal an error will be
counted.
Digital tuner
DIGI
Not used
---
---
Memory for chassis CPU MEM
Confirmation of reply of ACK signal which
used I
used I
2
C communication.
[IC7602] (DIGITAL SIGNAL PWB)
SDA
If checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.
an error will be counted.
AV switch
AVSW
Same as above
[IC501] (ANALOG SIGNAL PWB)
[IC501] (ANALOG SIGNAL PWB)
SDA
Same as above
3D YC separation
YC
Same as above
[IC1001] (DIGITAL SIGNAL PWB)
[IC1001] (DIGITAL SIGNAL PWB)
Audio process
AIO
Same as above
[IC1140] (RECEIVER PWB)
[IC1140] (RECEIVER PWB)
RF tuner
TUN
Same as above
[TU1101] (RECEIVER PWB)
[TU1101] (RECEIVER PWB)
Ghost reduction
GCR
Not used
---
---
DIST process
IP
Confirmation of reply of ACK signal which
used I
used I
2
C communication.
[IC3001] (DIGITAL SIGNAL PWB)
SDA
If checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.
an error will be counted.
RGB process
RGB
Same as above
[IC4001] ((DIGITAL SIGNAL PWB)
[IC4001] ((DIGITAL SIGNAL PWB)
DVI transmission
DVI
Not used
---
---
Digital input receive
HDMI
Confirmation of reply of ACK signal which
used I
used I
2
C communication.
[IC8001] (DIGITAL SIGNAL PWB)
SDA
If checks whenever I
2
communication is
performed and no reply of ACK signal
an error will be counted.
an error will be counted.