List Of Symbols - Pioneer PD-X99M Service Manual

PD-xSSM
6.3 LIST OF SYMBOLS
Tracking signal lead code detector
Output from 1/4 divider detectors used to detect RF and focus signals
Tracking signal end code detector
Error flag
IC9-64 : Error flag
IC9-65 Error flag
Carriage motor drive output
CRCF 1C9-20 |Sub-code Q error detection resuit output (synchronized with SCOR signal)
1C9-50 Chip select
RAM activator control signal
1C9-37~34 Data line RAM data line
32~29
D1~D8
DATA 1C9-78
Data
DAC playback signal data (serial)
[DEMP 1012-53 De-emphasis De-emphasis on/off signal (L: de-eemphasis ON)
Flags indicating when decoder LSI is correcting errors
1012-52
EXCK 1C9-21 External clock External clock input
Control signa! involved in single track jumping (control only while signal is at L level)
[FOoK IC5-1 Focus OK H level output to indicate that "in focus'' status is set when RF signal is obtained
lcrs | 1C9-28 GFS Frame sync lock'status output (H: locked)
GFS
leno GIN eae
iNSD Inside Detector signal indicating that pick-up has reached inside track
ene ee ee ce pee ee ee
KDO~KDS | IC11 9~12 Key data Key on/off matrix encoded data ;
15,17
1€201-11 Key strobe Output indicating that key has been pressed (L output when key is ON)
1012-44 Loading-in control signal
L:OUT 1012-45 Loading out Loading-out control signal
LD ON 112-56 Laser diode switching signa! (H: diode ON)
Loading motor drive voltage output
LRCK 1C9-80 LR clock Clock for switching decoder (DAC) left/right channels
23