Cd Test Mode - Aiwa CSD-TD49LHW Service Manual

CD TEST MODE -1/1

1. How to Start the CD Test Mode
While pressing the FUNCTION button, insert the AC plug to the power outlet.
When the test mode is started, the message [All indicators light] is displayed.
2. How to Exit the CD Test Mode
Press the POWER button, push other FUNCTION button or disconnect the AC plug.
* Pressing any other function key during PLAY, aborts the test mode.
3. Function Descriptions and Application of the CD Test Mode
No Mode Operation
1 Start mode
2 Search STOP button
mode
3 Play mode
4 Traverse
mode
5 Sled mode FF button
RWD button
6 Spindle
mode
*1: The driver IC heats up and the protection circuit starts working when the focus search is continued for 10 minutes or longer. There
can be a case that operations can not be performed correctly.
In such a case, turn off the main power. After cooling down the machine, restart the machine.
*2: After the focus search is executed three times, the gain is changed to the CD-RW gain from the fourth time.
*3: Be careful not to damage the gear because the sled motor rotates while the FF or RWD button is being pressed even if the pick-up
is located in the innermost track or the outermost track.
Display
All indicators light
Normal
PLAY/ Normal
PAUSE
button
PLAY/ Normal
PAUSE
button
All indicators light
All indicators light
REC All indicators light
Function
• All FL indicators light
• LD illuminates all the time
• Focus search continuous
operations *1,*2
• Spindle motor continuous kick
• Normal playback
• If TOC cannot be read, focus
search is continued
• Tracking servo OFF/ON
• Released by pressing the STOP
button.
• Pickup moves to the inner
circumference *3
At the same time, lens kicks to
the inner circumference
• Pickup moves to the outer
circumference *3
At the same time, lens kicks to
the outer circumference
• The spindle motor rotates
forward (rough speed) by
pressing the button and rotates
backward by pressing one more
time and stops by pressing again
-40-
Checking item
• FL check
• Microprocessor check
• APC circuit check
• Laser current measurement
• Focus search waveform check
• Each servo circuit is checked
• Tracking balance check
• Sled circuit check
• Tracking circuit check
• Mechanism operation check
• Pickup check
• Spindle circuit
• Spindle motor