6
JIG FOR CHECKING BD BOARD WAVEFORM
The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be
performed are shown as follows.
GND : Ground
I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser)
IOP : For measuring IOP (Check the deterioration of the optical pick-up laser)
TE
: TRK error signal (Traverse adjustment)
VC
: Reference level for checking the signal
RF
: RF signal (Check jitter)
FE
: Focus error signal
I+3V
Iop
GND
TE
FE
VC
RF
I+3V
IOP
GND
TE
FE
VC
RF
1
7
for
MDM-7A
I+3V
CN105
IOP
TE
VC
GND
FE
RF
Summary of Contents for MDS-JE440 - Md Player
Page 42: ...MDS JE440 42 42 6 10 SCHEMATIC DIAGRAM MAIN SECTION 3 3 See page 47 for IC Block Diagrams ...
Page 43: ...MDS JE440 43 43 6 11 PRINTED WIRING BOARD POWER SECTION ...
Page 44: ...MDS JE440 44 44 6 12 PRINTED WIRING BOARD DISPLAY SECTION ...
Page 45: ...MDS JE440 45 45 6 13 SCHEMATIC DIAGRAM DISPLAY SECTION See page 34 for Waveforms ...