JBL BD 300 (serv.man2) Service Manual ▷ View online
No video display
Check ifR188 is on
Go
No
No Video display
Add R188
Replace the main board
Yes
Check If L456 is on
No
Add L456
Trouble shooting chart
5- 5
JBL
SB 300 Service Manual
Page 12 of 41
Can not connect to network by lan
Check if the P3 is ok
Or not
Go
No
No
Can not connect to
network
Yes
Fix all the resistor
Check
R580,R133,R134,R583,R
579 is on in main board
Change P3
Check if LFE8634 (U14)
is on in mainboard
No
Fix U14 in mainboard
Yes
Yes
Replace the main board
Trouble shooting chart
5- 6
JBL
SB 300 Service Manual
Page 13 of 41
No output by Optical in
Go
No
No output by
Optical
Yes
Replace R375 and
U8
Check the power of ,R375
and U8
Replace U8
Check the connector
of P4
No
Fix
P4
in mainboard
Yes
Trouble shooting chart
5- 7
JBL
SB 300 Service Manual
Page 14 of 41
No output by HDMI IN 1 or2
Go
No
No output by
HDMI IN 1 or2
Yes
Replace U5
Check the U5 have right
output (pin2,3of U5 should
output the TMDS clock)
Replace Main board
Check the connector
of HDMI in J6 J7
No
Fix
J6 J7
in mainboard
Yes
Trouble shooting chart
5- 8
JBL
SB 300 Service Manual
Page 15 of 41
Click on the first or last page to see other BD 300 (serv.man2) service manuals if exist.