MDS-JE480 - Sony Audio Service Manual (repair manual). Page 6

6

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-7S1A

I+3V

CN105

Iop

TE

VC

GND

FE

RF