Hitachi CDH-LE32FD14, Руководство по обслуживанию

Страница: 74 / 98

Y
N
Y
Y
Y
Y
Y
Y
N
N
N
N
N
Y
N
N
Y
Y
Y
Y
Y
Y
N N
N
N
N
N
N
Y N
No audio & No backlight
Led indicator “red” on
Check the 5VSTB on “FB5” Press the “ON/OFF” on keyboard &
remote control, led turns green
Check the AC input on
power supply board
Upgrade the software
Change the
AC line
Check the
fuse on main
board
Done
Change
the fuse
Change the
Mainboard
Done Done
Upgrade the
software
Check the 5V, & 12V on
the mainboard
Change the
main board
Check the
“ON/OFF” voltage
on “R15”, should be
greater than 2.7V
Check “Q1” &
“U100” Pin A3(R19)
if it works well.
Change
the panel.
Done
Upgrade the
software
Change the “Q1”
or “U100”
Change the
“U100”
Done
Done
Done
Done
Upgrade the
software
Done
Done
Change the EEPROM
U101 “24C04”
Done
Done
Check all DC power
supply on “U100”
Change the power
supply IC for “U100”
Change the Main
IC “U100”
Change the
Mainboard
Done
Done
Done