Cd Test Mode - Aiwa XR-MD811 Service Manual

CD TEST MODE

1. How to Start the CD Test Mode
While pressing the function CD button, insert the AC plug to the
wall outlet. All the indicators on the display light, which means
that the test mode starts up.
3. Function Descriptions and Application of the CD Test Mode
No Mode
1 Start mode
2 Search
mode
3 Play mode
4 Traverse
mode
5 Sled 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 cannot be performed correctly.
In such a case, turn off the main power. After cooling down the machine, restart the machine.
*2: Before performing the visual check of the lens operation, slightly open the CD lid by hand. If you press the OPEN button and open the CD
lid, the search mode exists.
*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.
4. Overview of Operation
Each operation mode can be operated one mode after another using each button in the order starting from the "Start" mode that is shown by the
arrow mark in the illustration.
Operation FL indication
All indicators light
s CD
d
Normal time
display
a
Normal time
display
f
CD TEST
g
Search mode
2. How to Exit the CD Test Mode
Disconnect the AC plug.
Function
• LD lights
• Continuous focus search
• 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 *3
• Pickup moves to the innermost
track (normal operation during
playback)
Start mode
All indicators light
Play mode
– 52 –
Checking item
• Checking FL
• Checking microprocessor
• APC circuit
*1 *2 • 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
Traverse mode