Aiwa XR-MD510 Service Manual page 82

CD TEST MODE
1. Starting Up the CD Test Mode
While pressing the "CD" button, connect the AC plug to the power outlet. When the CD test mode starts up, all
displays turn on.
2. How to Release the CD Test Mode
To release the CD test mode, press the "POWER" button or the function buttons other than the "CD" button, or
disconnect the AC plug from the power outlet.
3. Function Description of the Test Mode
MODE Operation
Start mode CD key + AC
plug IN
Focus search mode STOP key
Play mode PLAY key
Traverse mode PAUSE key
Sled mode F.SKIP key
B.SKIP key
Note: If the focus search operation is continued for 10 minutes or longer, the driver IC heats up sufficiently to trigger the
protection circuit, which stops the CD system. Turn off the main power and re-start operation about 10 minutes
later.
Indication on
Function and movement
display
All indicators light • CD TEST mode starts
• All indicators light
CD • LD lights
• Continuous focus search
• Continuous spindle motor
kick
Track No. and • Normal playback
playing time • When TOC reading is not
(spectrum analyzer) possible, the focus search
continues
Track No. and • Tracking servo is turned off
playing time
CD TEST • The pickup moves to the
innermost track
• The pickup moves to the
outermost track
15
Check item
• Check all indicators light
• Microprocessor
• DATA BUS LINE
• APC circuit
• LASER current
• Check the focus search
waveform
• Check the focus error
waveform
• Focus servo circuit
• DRF output
• Spindle servo line
• Same checks as shown in the
above column
• Each servo circuit
• Check the tracking error
waveform
• Tracking circuit
• Sled circuit
• Mechanism (gear and motor)