Cd Test Mode - Aiwa NSX-TR99 Service Manual

CD TEST MODE -1/1

CD TEST MODE
1. Starting CD Test Mode
While pressing and holding down the CD FUNCTION button, insert the AC plug to outlet.
When test mode starts, the message, CD TEST appears on the display.
2. Exiting CD Test Mode
Press the POWER button or other FUNCTION button, remove the AC plug from outlet.
3. Function of CD Test Mode
No Mode Function Key
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
∗
1 When Focus Search operates continuously more than 10 minutes, the protection circuit is activated due to heat generation of the
driver IC.
In this case, turn off the power, wait for approximately 10 minutes so that heat is released, and then restart.
∗
2 When the Forcus Search fails three times, the gain is switched for CD-RW at 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 pickup is
located in the innermost track or the outermost track.
Display
All lit. FL all lit.
READING LD constantly lit.
Focus search continuous
∗
movement 1, 2
Spindle motor continuous kick
Normal Normal playback
If TOC READ is unavailable,
focus search is continued.
Normal Tracking servo OFF/ON
OFF and ON is repeated by every
press of the PAUSE button.
CD TEST PU moves to the innermost position.
At the same time, lens is kicked
toward inner position.
CD TEST PU moves to the outermost position.
At the same time, lens is kicked toward
outer position.
All lit. When the button is pressed at the first
time, spindle motor rotates forward
(at rough speed).
At the second press, rotation is reversed.
At the third press, rotation stops.
-52-
Movement
FL check
Microcomputer check
APC circuit check
Laser current electricity measurement
Focus search waveform check
Focus error waveform check
(DRF is ignored during search mode.)
Each servo circuit check
DRF check
DRF waveform check (approx. 1.5Vp-p)
Tracking balance check
∗
3
Sled circuit check
Tracking circuit check
∗
Mechanism movement check
3
PU check
Spindle circuit check
Spindle motor check
Check