JVC LT-Z37DX5 Service Manual

(No.YA362)1-25
5.1.6 DETAILS
Self check is performed for the following items:
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Detection item Display Detection content
Diagnosis
signal (line)
Detection timing
Low bias line short
protection
LOB Confirmation of operation of the low bais
(2.5V / 3.3V / 5V / 9V) protection circuit.
Q9801
, 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.
Abnormal rise of
temperature in audio
circuit
FAN Confirmation of the temperature of
audio circuit.
TH6661
[ANALOG SIGNAL PWB]
SDA Detection starts 3 seconds after the
power is turned on.
If the temperture of 90°C is detected for
3 seconds the power is turned off.
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 Not used. --- ---
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 Same as above.
AV select switch AVSW Same as above.
IC301
, IC501 [ANALOG SIGNAL PWB]
SDA Same as above.
3 dimensions YC
separator
YC Not used. --- ---
Multi sound process AIO Not used. --- ---
RF tuner TUN Confirmation of reply of ACK signal
which uses I
2
C communication.
TU3001
[RECEIVER PWB]
SDA If it checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.
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 process RGB 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.
DVI (Digital communication) DVI Not used. --- ---
Digital input HDMI Confirmation of reply of ACK signal
which uses I
2
C communication.
SDA If it checks whenever I
2
C communication
is performed and no reply of ACK signal
an error will be counted.

JVC LT-Z37DX5 Specifications

General

Brand	JVC
Model	LT-Z37DX5
Category	LCD TV
Language	English