Aiwa CX-NHG2MD, Service Manual

Page: 30 / 42

- 30 -
3. CD Test Mode functions
* Note 1: The driver IC (IC501) 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 RWD button is being pressed even if
the pick-up is located in the innermost track or the outermost track.
4. Overview of Operation
The each mode can be operated one after another using each button in the order that is shown by the arrow mark in the illustration
from the “Start” mode.
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.
Play mode
Start mode
All display lights
Search mode Traverse mode
Mode
Start mode
Search
mode
Play mode
Traverse
mode
Sled mode
Operation FL display
All lit
1 Tr
Normal time
display
Normal time
display
CD TEST
Operation
• LD lights
• Continuous focus search
*1
• Normal playback
• If TOC cannot be read, focus
search of “2” is continued
• Turning off/on repeats each
time tracking servo OFF/ON
is pressed
• Pickup moves to the
outermost track *2
• Pickup moves to the
innermost track (normal
operation during playback
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
• Mechanism
No
1
2
3
4
5