JVC PD-Z50DX4, Руководство по обслуживанию

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1-30 (No.YA229)
5.1.6 DETAILS
Self check is performed for the following items:
< Page 1 of screen (RECEIVER UNIT) >
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.
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.
IC7501 [DIGITAL SIGNAL PWB]
WAKE If it checks whenever sync communication
with Chassis CPUperformed 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 process AIO Same as above.
IC3501 [RECEIVER PWB]
SDA Same as above.
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.
IC4001 [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 Same as above.
IC6101 [DIGITAL SIGNAL PWB]
SDA Same as above.
Digital input HDMI Confirmation of reply of ACK signal
which uses I
2
C communication.
IC8001 [DIGITAL SIGNAL PWB]
SDA Same as above.