JVC InteriArt LT-17E31 BJG, Service Manual

Page: 23 / 123

(No. YA031) 1-23
SECTION 5
TROUBLESHOOTING
Does the LED
light up
Next
No
LED display is
amber
Is it entering into
power saving mode
Restart PC signal
to ensure H. V.
sync are not
absent
End
Reset the MCU(I004)
by pushing the power
key or replugging the
DC 12V cable
MCU (I004) Hangs
No
Replace I004
End
The Voltage of
L100;L083 is 12V
No
The Voltage of
I041 #6 is 12V Replace L100
& L083
The Voltage of
L041#2 is 5V
Replace I041 & D027
The Voltage at #44
of I004 is 5V
No
No
No
Yes
Yes
Yes
Yes
Yes
Replace I004
Check I004 socket is
loosened
Replace F001
End
No picture Appear
No
Yes
Yes
Picture
shows
Still no
Picture
Next
The Voltage of I002
#2 is 2.5V
No
The Voltage of I001
#2 is 3.3V
No
The Voltage of I003
#2 is 1.8V
No
The Voltage of I011
#2 is 3.3V
The Voltage of I012
#2 is 3.3V
End
Replace I034
(TP6760)
No
Replace I017 The Voltage of I017
#2 is 3.3V
No
Replace I012
No
Replace I011
Replace I003
Replace I001
Replace I002
Yes
Yes
Yes
Yes
Yes
Yes
Are the output of
TP6760(CLK,H,V ,
DE) normal
Ti ghten two flex
cables at P008
End
End
Are the input
waveforms of
TP6760 normal
Are flex cable
attached firmly at
the LCD panel
connectors
Are flex cable
attached firmly at
P008
Yes Y es
Ti ghten flex cable at
P008
End
Replace V901 (LCD
panel)
End
Replace I034
(TP6760)
The Ver. Or Hor.
Sync. Does not hold
No
No
Yes No
Yes