CMT-CP505MD, HCD-CP505 - Sony Audio Service Manual (repair manual). Page 10

10

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.

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)

TE

: TRK error signal (Traverse adjustment)

VC

: Reference level for checking the signal

RF

: RF signal (Check jitter)

FE

: Focus error signal

I+3V

Iop

TE

VC

GND

FE

RF

CN105

I+3V
Iop
GND
TE
FE
VC
RF

I+3V
Iop
GND
TE
FE
VC
RF

1

7

for MDM-7S2C

If the disc tray does not open and the message “LOCKED” appears,
press the two buttons of  ENTER/START  and  Z DVD  at the same
for 5 seconds or longer.
Then the lock is released, the message “UNLOCKED” appears for
2 seconds and the disc tray opens.