Pioneer FX-K99DK WG Service Manual page 41

Function and Operation
Data output pin for serial data transfer.
Data input pin for serial data transfer.
Dolby NR circuit control output pin.
OFF: "L" level
Output| B: "H" level
C: High impedance
Auto chrome detector switch input pin.
METALS Input "H" level output obtained from METAL pin when ''H" level is applied to this pin. (Only operates
during ATSC mode).
Equalizer circuit time constant switching output pin.
METAL Output}
The output differs according to the METALS pin input. (Only operates during ATSC mode, the
tput normally being held).
outp r y ig }
Output Pre-muting Post-muting
Mechanical deck
operations
Key in! 50ms '50ms
Loading motor contro! output. ''H" level output generated when loading mechanism is switched to
EJECT operation.
Muting
Loading motor control output. ''H'"' level output generated when loading mechanism is switched to
LOADING operation.
Deck audio circuit power supply ON/OFF switching control pin. ''H'' level output generated deck and
LOADING operations.
Head amplifier direction switching signal output.
"L' level for forward, "Ht" level for reverse.
End detection reel motor rotation pulse input pin. End is ''detected" when 'H"' level is applied
continuously for one second.
Loading operation switching input pin. If there is no cassette in the tape transport mechanism (pin 30
at ''L" level) LOADING is started when ''H" level is applied to this pin. And if ''L'' level is appliéd
to this pin during EJECT operation, EJECT-operation is stopped.
Normally GND.
Power supply pin. 5V + 10%
MS operation filter switching output pin. ''H" level for PLAY mode, "'L" level for FF, REW, and
MS modes.
System controller reference signal output pin. During PD4022 operation, a 100Hz, 50% duty oupust
signal is generated. :
48