Cd Test Mode - Aiwa XR-MP50 Service Manual

CD TEST MODE

1. How to Activate CD Test Mode
While pressing the CD function button, insert the AC plug to
the outlet. The message "CD TEST" appears on the display.
2. How to Cancel CD Test Mode
Exit the CD test mode by any of the following procedures.
• Press the function button (except the CD function button.)
• Press the power button.
• Disconnect the AC plug.
3. CD Test Mode functions
No Mode
1 Start mode
Search
mode
2
Play mode
3
Traverse
mode
4
Sled mode
5
* Note 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 cannot be performed correctly.
In such a case, turn off the main power. After cooling down, restart the unit.
* Note 2: Be careful not to damage the gear because the sled motor rotates while the FF or FWD button is being pressed
even if the pick-up is located in the innermost track or the outermost track.
4. Overview of Operation
The operation of each mode is carried out in the direction of the arrows from the start mode as indicated in the following
illustration.
Operation FL display
Activation All lit
Normal time
display
s (READING)
Normal time
display
x c
Normal time
a display
CD TEST
f
g
All display lights
Search mode
Operation
• Test mode is activated
• CD block is power ON
• FL lights
• Continuous focus search*1
• Normal playback
• If TOC cannot be read, focus
search of "2" is continued
• Tracking servo OFF/ON.
• Each time a is pressed, the
tracking servo repeats turning
off/on
• Pickup moves to the
outermost track
• Pickup moves to the
innermost track (normal
operation during playback
Start mode
Play mode
– 48 –
Checking item
• FL item
• Microprocessor
• APC circuit
• Laser current
• Focus search waveform
• Focus error waveform
(FOK and FZC are not
monitored in the search mode)
• Focus servo
• Tracking servo
• Sled servo
• Spindle servo
• FOK
• RF waveform
• Tracking servo
• Traverse waveform
• Sled circuit
*2 • Mechanism
Traverse mode