MDS-JA20ES - Sony Audio Service Manual (repair manual). Page 7

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The special jig (J-2501-149-A) is useful for checking the waveform of the BD board. The manes of terminals and the checking items to be
performed are shown as follows.

GND : Ground
I + 3 V : 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)

RF

5P connector

6P connector

VC

TEO

IOP

I+3V

GND

RF
VC
TEO

MDM-3

MDM-5
MDM-6

IOP
I-3V

VC
RF
TEO
IOP
I+3V
GND

VC

RF

TEO

IOP

I+3V

GND

1

5

1

6