Sony RMT-V267B, Service Manual

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5-1
SLV-999HF/M11HF/M91HF
SECTION 5
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1.
SYSTEM CONTR
OL —
VIDEO BLOCK INTERF
A
CE (MA-360 BO
ARD IC161)
*1
Sync
hr
oniz
ed with dr
um r
otation. 30Hz 50% duty c
ycle.
*2
Normally “L“. “H“ when CTL signal is not generated.
*3
V period “H“ pulse.
*4
Selected by REC mode. “H“ in LP mode.“
*5
Composite sync signal (positi
v
e).
Signal
RF SWP QVD V SYNC HA SWP
Pin No.
1 4 *™ (™
I/O
O O
I
O
ST
OP
FF/REW
*1
L
*4 *1
T
APE
THREADING
*1
L
*5 *1
T
APE
UNTHREADING
*1
L
*5 *1
PB
*1 *2 *5 *1
PB P
A
USE
*1 *3 *5 *1
SLO
W
*1 *3 *5 *1
CUE
*1 *3 *5 *1
x 2
*1 *2 *5 *1
REVIEW
*1 *3 *5 *1
REC
*1
L
*5 *1
REC P
A
USE
*1
L
*5 *1
5-2.
SYSTEM CONTR
OL — SER
V
O
PERIPHERAL CIRCUIT INTERF
A
CE (MA-360 BO
ARD IC161)
*1.
30Hz pulse.
*2.
Pulse at tape running.
*3.
Re
v
er
se lo
gic pulse of STEP PLS
.
*4.
“L” when drum rotation stops.
*5.
Unstable period pulse.
*6.
Pulse in period in proportional to tape speed.
*7.
360Hz pulse.
*8.
Pulse at tape running.
*9.
Approx. 2 msec period “H” or “L” pulse.
*10.
Approx. 1.5 msec period “H” or “L” pulse.
*11.
“L
” w
hen FWD SLO
W
,
“H” w
hen R
VS SLO
W
.
Signal
CAP ST
OP
STEP PLS DRM PG DRM FG CAP FG CAP D
A
DRM D
A
Pin No.
#£ (ª $∞ $§ $¶ &• &ª
I/O
O (O.D)
O
I I I
O O
ST
OP
L L
*4 *4
H/L
*8
*10
FF
Hi-Z (O.D)
L
*1 *7 *6 *8
*10
REW
Hi-Z (O.D)
L
*1 *7 *6 *8
*10
T
APE
THREADING
Hi-Z (O.D)
L
*5 *5 *5 *8
*10
T
APE
UNTHREADING
Hi-Z (O.D)
L
*5 *5 *5 *8
*10
PB
Hi-Z (O.D)
L
*1 *7 *6 *9
*10
PB P
A
USE
L L
*1 *7
H/L
*8
*10
SLO
W
*3 *2 *1 *7 *2 *8
*10
CUE
Hi-Z (O.D)
L
*1 *7 *6 *9
*10
x 2
Hi-Z (O.D)
L
*1 *7 *6 *8
*10
REVIEW
Hi-Z (O.D)
L
*1 *7 *6 *9
*10
REC
Hi-Z (O.D)
L
*1 *7 *6 *9
*10
REC P
A
USE
Hi-Z (O.D)
L
*1 *7
H/L
*8
*10