Spindle Control; Erasing (Cd-Rw Only); Last-Track-Erase Operation; All-Track-Erase Operation - Pioneer PDR-555RW Service Manual

9.2.10 Spindle Control

9.2.10.1 Spindle Control
The spindle is controlled using the PWM output from the SPSP
terminal.
The microcomputer controls it only for CAV control.
64µs
1
t1
2
t1
3
t1
1 Kicking
The current velocity is slower than the target velocity.
(The velocity decreases upon spindle start-up, searching the
inner periphery or in CAV.)
2 Neutral
The target velocity and the current velocity are the same.
(In STOP, or during CAV lock)
3 Breaking
The current velocity is faster than the target velocity.
(The velocity increases upon spindle breaking, searching the
outer periphery or in CAV.)
9.2.10.2 Spindle Servo Mode Switching
Spindle mode switching in CD-R STOP → PLAY → Search →
STOP operations is shown below:
Number of
rotation of
the spindle
CLV
ECLV
Spindle
S A W A W E
mode
Operation
Setup
Plays the
first tune
Searches for
the first tune
Spindle mode: S = STOP (in stop state)
A = CAV
W = Wobble CLV
E = EFM CLV
PDR-555RW, PDR-V500, PDR-19RW, PDR-509
t2
t2
t2
A W E A W E A
Stop
Plays the Plays the
tenth tune first tune
Searches for Searches for
the tenth tune the first tune

9.3 ERASING (CD-RW ONLY)

9.3.1 Last-Track-Erase Operation

The Last-Track-Erase function is to erase the last track of a partial
CD-RW disc.
∗ Writing to PMA is performed when the tray is opened or at the
next opportunity of PMA writing.

9.3.2 All-Track-Erase Operation

9.3.2.1 All-Track-Erase of a Partial CD-RW Disc
This function is to erase all tracks of a partial CD-RW disc.
∗ Writing to PMA is performed when the tray is opened or finished
with the next PMA writing.
9.3.2.2 All-Track-Erase of a Finalized CD-RW Disc
This function is to return a finalized CD-RW disc to the state of a
blank CD-RW disc so that recording can be made on it again.

9.3.3 TOC-Erase Operation

TOC-Erase is the function to restore a finalized CD-RW disc to a
partial CD-RW disc so that additional recording can be made on it
again.

9.3.4 All-Disc-Erase Operation

All-Disc-Erase is the function to restore the recorded CD-RW disc
(with pits on it) to the state of a blank CD-RW disc (with no pits).

9.3.5 PCA-Erase Operation

PCA-Erase is the function to automatically erase PCA when the
PCA-area runs out in PCA recording.

9.4 RID CODES

S
With an audio CD recorder code, the Recorder Identification (RID)
codes are recorded in subcode Q channel mode 3 of a disc.
The content written in RID code is the maker code, type code
(product model number), and identification code (serial number).
37