Sony MICROFILM CDP-502ES Service Manual page 13

Command from master control IC (IC702) to
mechanism control IC (IC701).
CDP-502ES/620ES
When the INDEX key is
>
repeats play between that point and the point where
This command is sent out when the TOC data in the
mechanism control IC is desired, and is sent out during
Command
OPEN DF Opens disc compartment.
CLOSE CF Closes disc compartment.
AMS
A * * OIF
Perform AMS. If for the 5th selection:
AOSOIF
see
TRACK NO
INDEX
A *
* * * F
Perfroms
index search.
TRACK NO INDEX NO sent.
LOCATION B *¥ * %* %# #*° & * * «* OF
[em . asi) Op L4
TRACK NO INDEX NO MIN SEC FRAME
; B was pressed.
STOP 1F Stops spindle motor and sled motor.
manual search 4F-9F Sends out during FF and REW.
4F
FF during PAUSE.
Performs 40 track jump after a certain time passes. |
SF REW during PAUSE.
6F FF Performs 40 track jump after a certain time passes.
TF REW
8F, 9F not used
PAUSE 3F PAUSE
PLAY 2F normal PLAY command
TOC REQ eR ke Rk ek OR UK & (FD
ee ee ee
H L MIN SEC MIN SEC
\selection Nn? \setection N + v
The above signals are sent from CMDO-CMD3 to
the mechanism control IC.
The mechanism control IC executes these com-
mands.
Commands sent from the mechanism control IC
(IC701) to the master control IC (IC702).
TOC, Q data C * * *# * * * * & * & & & &
Ge ee fe ee, ee ed
TRACK NO INDEX NO MIN SEC FRAME MIN SEC
Coos at a,
elapsed time in elapsed time from
the track beginning of disc
TOC READ END A (F) Sent out when TOC data read-in is finished.
LEAD OUT B (F) Sent out when disc ends.
NO DISC E (F) Sent out when there is no disc in the disc compartment.
OPEN D(F) Sent out when the disc compartment is open.
The mechanism control IC (IC701) keeps the TOC
data and Q data read in from the disc; and sends it to
the master control IC (IC702) as required.
—15—
random access, when selection changes, etc.
FE TOC data or Q data is sent.