Sony MINIDISC DECK MDS-S38, Service Manual, Page: 4 / 68

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SECTION 1
SERVICING NOTE
JIG FOR CHECKING BD BOARD WAVEFORM
The special jig (J-2501-124-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.
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)
IOP
I + 3V
TEO
VC
RF
Mechanism deck
CN110
Jig
(J-2501-124-A)
FORCED RESET
The system microprocessor can be reset in the following way.
Use these methods when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.
Method :
Disconnect the power plug, short-circuit JW143 and JW164 on the main board with a pincette or etc.
[MAIN BOARD] (Component Side)
S301
CN302
JW143 JW164
C001