M-Track Move; Fine Search; Loading Control - Pioneer PDR-555RW Service Manual

PDR-555RW, PDR-V500, PDR-19RW, PDR-509

9.2.7 M-Track Move

Used for CD/Finalized CD-R only.
Sled drive
COUT (MIRR)
XBUSY (SENS)
202µsec
1
1
Starts the auto sequence (starts a jump).
2
Detects XBUSY (SENS) rising. (The auto sequence ends.)
3 Executes tracking ON processing after 200 ms

9.2.8 Fine Search

Used for CD-R/RW. There are two formats of Fine Search: M-
Track Move format and 2N-Track Jump format, which are used
depending on the conditions.
9.2.8.1 M-Track Move Format
KICK(D) KICK(F)
SL drive
TRK drive
COMP
(SENS)
XBUSY
(SENS)
JMPA
1
1
Starts Fine Search (starts a jump).
2
Detects COMP falling.
3 Detects XBUSY (SENS) rising. (The auto sequence ends.)
36
9.2.8.2 2N-Track Jump Format
SL drive
TRK drive
COMP
(SENS)
XBUSY
(SENS)
200msec
JMPA
2 3
1
2
3

9.2.9 Loading Control

State of the tray
<For load-in>
KICK(D)
<For OPEN>
9.2.9.1 Load-in Operation
Starts the load-in operation by setting LIN to "H."
2 3
Regards that CLOSE is finished if the TRAY(A/D) input becomes
lower than 1.25 V, and finishes the operation by setting LIN to "L."
9.2.9.2 Open Operation
Starts the open operation by setting LOUT to H."
Regards that OPEN is finished if the TRAY(A/D) input becomes
higher than 3.75 V, and finishes the operation by setting LOUT to
L."
KICK(D) KICK(F)
1
Starts Fine Search (starts a jump).
Detects COMP falling.
Detects XBUSY (SENS) rising. (The auto sequence ends.)
OPEN
5V
TRAY
(A/D input)
Time
L IN
L OUT
Starts
loading-in
L IN
L OUT
KICK(D)
2
3
Middle CLOSE
3.75V
1.25V
GND
Time
Starts opening