Hitachi DZ-GX5020A K Service Manual page 52

Troubleshooting > Trouble Diagnosis
Message "DISC ACCESS" does not disappear
even if a normal DVD is loaded.
Replace the DVD drive unit.
Message "Disc is not formatted. Format the disc
now?" appears even if a formatted DVD is loaded.
Replace the DVD drive unit
No image appears on LCD monitor.
Is video signal output
No
from the AV output
jack?
Yes
No
Does backlight turn on?
Yes
Set to service position (B).
No
TL7026 (C8.5V):
8.5V DC
Yes
No
TL7025 (LCD-G):
Video signal
Yes
Replace the LCD unit.
Refer to "No video
signal from the AV
output jack".
Replace the LCD unit.
List of check points
Circuit board
Symptom
(side)
TL7025 MAN (B)
TL7026 MAN (B)
Replace the DVD drive
unit.
Replace the MAN
circuit board.
4 - 24
Message "Write protected. Check disc" appears
even if a DVD with no write-protect is loaded.
Replace the DVD drive unit.
Lead wire
Location on
soldered
circuit board
or not
7D Need
7D Need