System Control - System Control Peripheral Circuit; System Control And Rf Modulator - Input Selection Block Interface; System Control - Video/Rp Block Interface; System Control - Audio Block Interface - Sony SLV-495 Service Manual

6-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE
(MA-289 board IC 160)
TO level
MA-289 Board
1Cc160 @ ea Normally "H'". "L" when service interruption detected or restored.
MA-289 Board
12C DATAI C160 @
MA-289 Board
12C CLOCK! 1Cc160 @ cal
MA-289 Board
MA-289 Board
12C CLOCK VIDEO | ic160 @
: MA-289 Board
MA-289 Board
6-4. SYSTEM CONTROL AND RF MODULATOR — INPUT SELECTION BLOCK
INTERFACE (MA-289 board IC501)
[Signal | __—PinNo.__| W/O | VO level
MA-289 Board eae
ANT SEL 1C160 @ L" when RF modulator through.
6-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTERFACE (MA-289 board IC160)
MA-289 Board
1C160 @
QVD
MA-289 Board
REC P 1c160 @
MA-289 Board
*1. Synchronized with drum rocation. 30Hz 50% duty pulse.
*2.__ Normal "L". "H" when video signal is not rgenerated.
*3, Composite sync signal (positive).
6-6. SYSTEM CONTROL — AUDIO BLOCK INTERFACE (MA-289 board IC 160)
2 STOP/FF TAPE TAPE REC
[simt | mane [uo | SRF | onto | uate | 2 | Re [tie
MA-289 Board
A MUTE 1C160 @ L L L L L
6-2