Hitachi UltraVision UT47V702, Service Manual

Page: 32 / 96

D8MW
31
...TROUBLESHOOTING FLOWCHARTS (continued)...
A : Picture Troubleshooting
No picture, no color or dark
Check the picture menu.
Are there problems?
No
Yes
No
It is trouble of IR/PW-SW PWB.
Please check EISP connector
No
Are there
signals(R,G,B,H,V) at
CE12-CE14,RE49 and
RE50 of Main PWB?
Adjust the picture
menu.
Are the voltage of
pin 7 and 9 (+5V) of PV01
(Main PWB) normal?
Yes
RGB input
HDMI input
Are there
signals(R(8bit),G(8bit),
B(8bit),H,V,DE,CLK) at
RH33,RH35,RH37 and
RH39 of Main PWB?
It is trouble of IA01
of Main PWB.
Please change.
Are there
signals(R,G,B,H,V) at
CE06-CE08 and
IW01(pin1, 13) of Main
PWB?
It is trouble of QE01-QE03
or IE01of Main PWB.
Please change.
Yes
Yes
No
Yes
It is trouble of EFFC connector,
Terminal PWB, or PW01 of
Main PWB.
No
Are there signals(TMDS)
at RH60-67 of Main PWB?
It is trouble of IH01
of Main PWB.
Please change.
No
Is there voltage at
pin 18 (+5V) of JH01 (Main
PWB) and is there
voltage(over +2.4V) at
pin19 of JH01?
It is trouble of IH02
of Main PWB.
Please change.
It is trouble of Q001, GH01
or DH03 of Main PWB.
Please change.
Yes
No
Yes