Standard Operation Chart - Yamaha CDC-775 Service Manual

CDC-775

STANDARD OPERATION CHART

Press OPEN/CLOSE key.
Forced feed return operation.
Clamp down operation.
Disc table reset.
Tray open.
Tracking Offset auto ADJ.
Focus Offset auto ADJ.
Load a disc in "DISC 1".
Press PLAY key or push the tray.
Tray closed.
Table rotate.
Disc research.
Disc mechanism unit clamped up.
Feed inward switch research.
Laser ON.
Disc scan.
FOCUS Gain rough ADJ.
FOCUS Search operation.
FOCUS LOCK servo ON.
Spindle motor accelerated.
TRACKING servo ON.
Disc servo ON
VCO lock.
Tracking Gain rough ADJ.
Tracking Balance ADJ. (only Tray OPEN/CLOSE)
FOCUS BALANCE ADJ.
A
7
"OPEN" appears on the display.
"TRV" signal is output until detection of LIMIT switch.
Proceeds to next step after detection of CLAMP switch. (SW400)
Stop after detection of LOADING switch. (SW401)
"DISC" flash.
Proceeds to next step after detection of LOADING switch. (SW401)
DISC "1" is turned to DM clamp position.
"DISC" from flashing to lighting.
Proceeds to next step after detection of CLAMP switch (SW401)
if FLSW = L (IC301, pin 21) Proceed to next step.
LSON = "H" (IC1, pin 3)
FLOCK = "H" → "L" (IC301, pin 8)
TLOCK = "H" → "L" (IC301, pin 7)