Read Sony MDS-JB940 Service Manual online
6
JIG FOR CHECKING BD BOARD WAVEFORM
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.
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)
VC
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)
FE
: FOCUS error
SECTION 1
SERVICE NOTE
CN105
RF
VC
TE
IOP
I+3V
GND
Mechanism deck
RF
VC
for
MDM-7
MDM-7
IOP
TE
I+3V
GND
VC
RF
TE
IOP
I+3V
GND
1
7
FE
FE
FE
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