Cd Test Mode - Aiwa NSX-SZ900 Service Manual

CD TEST MODE

1. How to Activate CD Test Mode
While pressing the FUNCTION button, insert the AC plug to the power outlet.
When the test mode is started, the message “ TEST” is displayed.
2. How to Exit CD Test Mode
Press the POWER button, push other FUNCTION buttons or disconnect the AC plug.
3. Function Descriptions and Application of CD Test Mode
No Mode Operation
1 Start Mode
2 Search Mode STOP button
3 Play Mode PLAY button
4 Traverse PAUSE
Mode button
5 Sled Mode FF button
RWD button
6 Spindle Mode REC/REC
MUTE button light.
*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 where operations cannot be performed correctly.
In such a case, turn off the main power. After cooling down the machine, restart the machine.
*2 : Be careful not to damage the gear because the sled motor rotates while the FF or RWD button is pressed even when the pickup
is located at the innermost track or the outermost track.
Display Function
All indicators • All FL indicators light.
light.
Reading • LD illuminates all the time.
• Focus-search continuous
operations. *1
• Spindle motor continuous kick.
Normal • Normal playback.
• If TOC cannot be read, focus
search is continued.
Normal • Tracking Servo OFF/ON.
• Each time PAUSE button is
pressed, the Tracking Servo
repeats turning OFF/ON.
TEST • Pickup moves to the inner
circumference. *2
At the same time, the lens is kicked • Mechanism operation check
to the inner circumference.
TEST • Pickup moves to the outer
circumference. *2
At the same time, the lens is kicked
to the outer circumference.
All indicators • 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
• Focus-error waveform check
(DRF is ignored during search
mode)
• Each servo circuits is checked
• DRF check
• Tracking balance check
• Sled circuit check
• Tracking circuit check
• Pickup check
• Spindle circuit check
• Spindle motor check