MDS-J3000, MDS-J3000ES - Sony Audio Service Manual (repair manual). Page 4

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The special jig (J-2501-124-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.

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)

TEO : TRK error signal (Traverse adjustment)
VC

: Reference level for checking the signal

RF

: RF signal (Check jitter)

IOP

I + 3V

TEO

VC

RF

Mechanism deck

CN110

Jig

(J-2501-124-A)

The system microprocessor can be reset in the following way.
Use these methods when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.

Method :
Disconnect the power plug, short-circuit the land of RESET.

Short land

TP (RESET)

CN303

IC401