Sony ZS-M7 Service Manual page 4

ABOUT THE BD BOARD WAVEFORM CHECKING JIG
The special jig (J-2501-124-A) is highly convenient when check-
ing the waveform of the BD board of the MD section. Pin names
and items to check are as follows:
I+3V : for IOP measurement (check for depleted optical pickup
laser)
IOP : for IOP measurement (check for depleted optical pickup
laser)
TEO : TRK error signal (traverse adjustment)
VC : Standard level for checking signals
RF : RF signal (jitter check)
RF
VC
TEO
IOP
I + 3V
Jig
(J-2501-124-A)
ABOUT THE HARDWARE RESET
It is possible to reset the system microcomputer by pressing the
RESET button located on the rear with a pointed object. Use this
button when the unit cannot be operated properly due to such prob-
lems as microcomputer errors, etc.
DG board
CN110
– 4 –
MD block section
BD board
RESET button