JVC XV-BP10J Service Manual page 44

When you turn on your BD-P, no message will be occur on front panel and it will
not boot-up normally.
1-7. Main board
1-7-1. Solution
Replace main board.
1-7-2. How to troubleshoot (Countermeasure)
1) Please remove IC101 and IC301~304
and then check the Impedance between each signal (DATA, ADDRESS, and so on.)
2) Please check the voltages of CM560, CN580 pin #15 and CN701 pin #6.
and then check the impedance between above 3 pins.
2) If there is some Impedance ( a few ohm or infinite ohm), PCB via or inner pattern might be broken.
And you'd better change MAIN board.
( In case of changing Main PCB, SA reset must be executed)
1-7-3. Service hint (Any picture / Remark)
COMPONENT REPAIR GUIDE
< Main board top view >
< Main board bottom view >
IC301
IC101
IC304
IC303
CN580
CM560
3-33
IC302
CN701