Focus On Waveform; Spindle Control Waveform (No Disc Condition) - LG DP391B Service Manual

4. FOCUS ON WAVEFORM

FOSO(U401 PIN11)
F+(U401 PIN8)
F-(U401 PIN9)

5. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)

DMSO(U401 PIN12)
SP-(U401 PIN15)
SP+(U401 PIN14)
LGE Internal Use Only
FIG 4-1
FIG 5-1
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