Sony MDS-SD1 service manual Section Servicing Note, Jig For Checking Bd Board Waveform

SECTION 1

SERVICING NOTE

JIG FOR CHECKING BD BOARD WAVEFORM

The special jig (J-2501-149-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)
TEO	: TRK error signal (Traverse adjustment)
RF	: RF signal (Check jitter)
VC	: Reference level for checking the signal

Mechanism deck

CN110

6P connector

5P Connector

VC

RF

TEO

IOP

I+3V

GND

	1	RF
RF		VC
		TEO MDM-3
VC		IOP
TEO	5	I+3V
IOP	1	VC
I+3V		RF
		TEO	MDM-5
		IOP
GND	6	I+3V
		GND

– 6 –