Sony MDS-JA20ES Service Manual page 7

JIG FOR CHECKING BD BOARD WAVEFORM
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
VC
TEO
IOP
I+3V
GND
RF
VC
TEO
IOP
I+3V
GND
– 7 –
6P connector
5P connector
1
RF
VC
TEO MDM-3
IOP
5 I-3V
1
VC
RF
TEO
MDM-5
IOP
MDM-6
I+3V
6
GND