67
DV-444, DV-440
Diagnosis of JACB Assy
6
1
Remove the Rear Panel (Screws
×
7).
2
Remove the JACB Assy, MJKB Assy and the POWER
SUPPLY Unit (Screws
×
10)(PCB Support
×
1).
3
4
5
Short-circuit W284 (GND of audio and video) on the JACB Assy
as shown in the right figure. (Audio does not come out from
output terminal that does not short-circuit.)
Note: If diagnosis was completed, be sure to remove a wire.
6
POWER SUPPLY
Unit
JACB Assy
MJKB Assy
DVDM Assy
Connection Cable
for Service
(GGD1222)
3
Loading Mechanism Assy
4
Short point of the JACB Assy
SIDE B
Short-circuit W284
W284
W284
W284
4
Connect two Connection Cables for Service (GGD1222)
between DVDM Assy and JACB Assy.
Reverse the JACB Assy and POWER SUPPLY Unit,
and arrange as figure below.
Playback with a test disc, and diagnose the JACB Assy.