Function (Ma-106 Board 1C502) - Sony SLV-595HF Service Manual

3-11. SERVO/SYSTEM CONTROL—MICROPROCESSOR PIN FUNCTION
(MA-106 BOARD IC502)
he Port vo Signal Function
1 | P85/PPOI3_ © | RF SWP Video switching pulse output
t 2 | pBapPot2 o |avo False VD pulse outpit 7 = —
| 3 | PB3/PPon1 [o {aup ENBL =e False HD voltage level control
4__| PB2/PPO10 © | AF REC P | "H" output when (
5 | PBI/PPOS 0 | REC P "H" output when video REC-PAUSE
6 | PBO/PPOB O |FEON _| Flaying erase ON/OFF output. — = m2
7 | pC7/RTOT © | REC CTL REC CTL output - a
| 8 | Pce/ATO6
O [inTVD
——_| Internal VD signal. Not used
9 | PCS/RTOS 0 | Rc CONT Not used a za aes
10 | PC4/RTO4 0 | NA RECP SH" when normal audio REC
11 | PC3/RTO3 oO | NAPB " H " when normal audio playback = =<
12 | PC2/PPO18 0 | cam CAM motor s
| 13 | PC1/PPO17
Oo | cw
Clockwise /coun
— .—.
14 | PCO/PPO16 0 | Load Load motor select = —
15 | PUT 1 | CIN/REC PRE Erasing protection tab, cassette IN detection input
"16 | PUG |) | ¢ DOWN Cassette up/down detection input
17 | PUS | | T SENS T end sensor input :
18 | Pu4 |
|S SENS
S end sensor input
|
i9_| Pus ~ | 0 | AF Mix "| hi-fi/normal audio MIX control =
20 | Pu2
© | ANT vTR
RF modulator ON/OFF control
SSS
| 21 | put |_| STEREO Tuner audio mode input
22 | PJO
1 [BLING
Not used
ae
23 ~| PD?
oO | TA MUTE
Tuner audio MUTE signal
ras
.
24 | PD6 oO | STEP PLS "H" when capstan step drive _ cae '
25 | PDS 0 | DESCRAMBLE Not used %
| 26 | Ppa ___|_0 | TUNER/BS Not used |
27 | PD3 © | BS MoniTOR ' | Not used
28 | PD2 oO | CTL REC *H" when CTR writing
29 | PDI o | ct step STEP motion control of CTL amp es
30 | PDO © | INDEX
Index control. "H" when playback index writing or erasing.
31 | PH7 o | F Mono Tuner forced monaural signal —-
32 | PHE
O | END LED
END sensor lamp drive output
mae
33 | PHS
| o | cap tpa2
Capstan current control. "L" when FF/REW= stop
> i f
34 | PHA : o | CaP TPa1 Capstan current control. "L" when slow down is
35 | PH3 ~ | 0 | NOR A MUTE | "H" when normal audio MUTE
36 | PH2
o. | FULL ERS " L " when
full erase head operation
37 (| PHI
oO | A mute
Audio MUTE output :
x
[ 36 | PHO
o | cap stop _
Capstan STOP signal output
_
| 39 [MP | MP Fixed at °L" level =
40 [RST .
1 | COSMO RST | System reset input
7
-
41 | Vss GND
42. | XTAL : XTAL ' ~y
= hea Sore -| system clock 12 MHz
| 44 | CSO 1 SMO Chipselectsignal = tst—"'—S™S:*='"' ; 3XTW*é'<CS;COC*@
45 | S10. = 1 | so ne a ee
46 S00
cai
0 | soo
Signal for serial communication
47 | SCKO ! SCKO
48 | PF7/AN11
1 | METER ()
| Level meter (L) input
C T otal]
a9 | PF6/ANIO. |__| METER (R) Leveimeter(R)input
= §t—