Sony TRINITRON KV-21V5A Service Manual page 47

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3-4. SYSTEM CONTROL-SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA7 BOARD IC402)
Signal Pin No. | VO VO Level
ASURA RESET 1c402 @ || Normally "H"."L" when service interruption is detected or restored.
ASURA CS 1c402 @ 1 | Chip select signal from the timer microprocessor.V period "L" pulse.
SINO 1c402@ | 1 | Serial communication data from the timer microprocessor. V period "L" pulse.
SOUTO 1c402 @ Serial communication data to the timer microprocessor.V period "L" pulse.
SCiK 1c402@ | 1 | Serial communication clock with the timer microprocessor.V period "L" pulse.
3-5. SYSTEM CONTROL-AUDIO BLOCK INTERFACE (MA7 BOARD IC402)
ae Ziltent TAPE Hosa PB. PICTURE SEARCH REC.
Signal PinNo. | vO | STOP FF REW _| THREADING |UNTHRL Pp | PAUSE | SLOW | x2 cue [Review] REC | PAUSE
'AF ENVELOP 1c402@ | | | AF RF envelope signal input pin for auto tracking.
NAPB tc402 ® | O L L L L ie H H H H H H L L
AMUTE iewee@ |}
L L L L
4 H H H H H
L L
(0.0)
WASP (c402@ | O 2 "2 "2 2 2 3 3 "3 3 3 "2 2 *2
NA REC.P (c402@ | 0 L L L L L L L L L L L H L
*4| AF REC.P
tc4o2@ | O L L L L L
L L t L L
L H L
+4] AF SWP icaoz@ | O|
11 4 4 4 4
a 4 4 4 "
4 4
AF SWPOSITION | 1402 @ | 1 | Input pin for AF switching position adjustment.
"4 beste
Ic402 @ bes H H
H H y H H
H H 4 H H
L
{OPH
eae Ee
re Ee Lee
*1, 25Hz 50% duty pulse approximately 5 msec. delayed from RF SW P.
*2, Selected according to SP/LP selector. "L" in the SP mode, "H" in the LP mode.
+3, Selected according to the tape recording mode. "L" in the SP mode, "H" in the LP mode.
*4. Not used.
3-6. SYSTEM CONTROL-RF MODULATOR, INPUT SELECTION BLOCK INTERFACE (MA7 BOARD IC402)
VO Level
Signal PinNo. | VO | TUNER LINE 1 LINE 2
LINE 4 tca02@ | 0 ul H L
*1| LINE 2 1c402 @ ° L G. H
*1. Not used.