NAD T571C Service Manual page 4

3. DRIVE & RF CIRCUIT DIAGRAM
Tray Loading
Speed control
Turntable
not operate
Spindle Motor
Focus Servo Loop
Sled Servo Loop
Tracking Servo Loop Spindle Servo Loop
Turn Table Loop
Turn table
speed control
unstable Actuator spindle
sled not operate
WAVEFORM
4
DVD laser
not operate
CD laser
not operate
Servo fail
3-21 3-22
CD/DVD picture
abnormal
µ-com
Interface line
Focus
Servo fail
6
1
2
3
1
Tracking Servo fail
T571C/T571AH
DVD Mode fail DVD
Laser not operate