Sony SLV-AV100B / SLV-AV100NP / SLV-AV100UX / SLV-AV100VC Service Manual ▷ View online
7-2
Signal
Pin No.
I/O
STOP
FF
REW
PB
SLOW
CUE
x 2
REVIEW
REC
REC CTL
IC201 7
O
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
CAP STOP
IC201 #∞
L
L
*3
STEP PLS
IC201 (ª
O
L
L
L
L
L
L
L
*2
L
L
L
L
L
CTL REC
IC201 &∞
O
L
L
L
L
L
L
L
L
L
L
L
H
L
H
CTL INDEX
IC201 &ª
O
L
L
L
L
L
L
L
L
L
L
L
L
L
H
PB CTL
IC201 ^¶
I
H
*6
*6
*1
H/L
*2
*6
*6
*6
*1
H
DRM PG
IC201 ^•
I
*4
*1
*1
*5
*5
*1
*1
*1
*1
*1
*1
*1
*1
DRM FG
IC201 ^ª
I
*4
*7
*7
*5
*5
*7
*7
*7
*7
*7
*7
*7
*7
CAP FG
IC201 &º
I
H/L
*6
*6
*5
*5
*6
H/L
*2
*6
*6
*6
*6
H/L
CAP DA
IC201 &£
O
*8
*8
*8
*8
*8
*9
*8
*8
*9
*9
*9
*9
*8
DRM DA
IC201 &¢
O
*10
*10
*10
*10
*10
*10
*10
*10
*10
*10
*10
*10
*10
CTL STEP
IC201 &§
O
L
L
L
L
L
L
L
*11
L
L
L
L
L
7-2. SYSTEM CONTROL – SERVO PERIPHERAL CIRCUIT INTERFACE (MA-283 BOARD IC201)
TAPE
THREAD-
ING
TAPE
UNTHREAD-
ING
PB •
PAUSE
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
HI-Z
(O.D)
O
(O.D)
*1. 25 Hz pulse.
*7. 300 Hz pulse.
*2. Pulse at tape running.
*8. Approx. 2 msec period "H" or "L" pulse.
*3. Reverse logic pulse of STEP PLS.
*9. Approx. 1.5 msec period "H" or "L" pulse.
*4. "L" when drum rotation stop.
*10. Approx. 3 msec period "H" or "L" pulse.
*5. Unstable period pulse.
*11. "H" when FWD direction STEP drive.
*6. Pulse of period in proportion to tape speed.
HI-Z
(O.D)
PB
INDEX
WRT/ERS
REC •
PAUSE
7-3
Signal
Pin No.
I/O
EJECTED
STOP
FF
REW
PB
SLOW
x 2
CUE
REVIEW
REC
CAM LOAD
IC201 !£
O
L
H
L
H
L
L
L
L
L
L
L
L
L
L
L
L
CAM UNLOAD
IC201 !¢
O
L
L
H
L
H
L
L
L
L
L
L
L
L
L
L
L
CAM 12V
IC201 #¡
O
H
L
H
L
MODE1
IC201 #º
I
H
L
L
*1
*1
H
H
H
H
H
H
H
H
L
H
H
MODE2
IC201 @ª
I
L
L
L
*1
*1
L
L
L
H
H
H
H
H
H
H
H
MODE3
IC201 @•
I
L
L
L
*1
*1
H
H
H
L
H
H
L
L
H
L
H
MODE4
IC201 @¶
I
L
H
H
*1
*1
H
L
L
L
L
L
L
L
L
L
L
C IN (REC PRF) IC201 !∞
I
L
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
*2
TREEL FG
IC201 ^¢
I
H/L
H/L
H/L
H/L
H/L
H/L
*3
*3
*3
H/L
*3
*3
*3
*3
*3
H/L
SREEL FG
IC201 ^£
I
H/L
H/L
H/L
*3
*3
H/L
*3
*3
*3
H/L
*3
*3
*3
*3
*3
H/L
T/E LED
IC201 #™
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
*4
CAP TRQ1
IC201 #¢
*1
CAP TRQ2
IC201 #£
L
*1
L
CAP TRQ3
IC201 8
H
H
*1
H
H
CAP STOP
IC201 #∞
L
L
L
H
H
L
H
H
H
L
*5
H
H
H
H
L
CAP RVS
IC201 &™
O
H
L
H
H/L
L
H
L
L
L/*5
L
L
H
L
L
CAP DA
IC201 &£
O
T SENS
IC201 ^¡
I
*4
*4
*4
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
S SENS
IC201 ^™
I
*4
*4
*4
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
*7
7-3. SYSTEM CONTROL – MECHANISM INTERFACE (MA-283 BOARD IC201)
TAPE
UNTHREAD-
ING
TAPE
THREAD-
ING
PB •
PAUSE
CASSETTE
LOADING
CASSETTE
UNLOADING
*1. Uncertainty.
*6. "L" when tape running and CAP RVS is "H".
*2. "L" when erasing protection tab is bent, "H" when not bent.
*7. Normally "L". 2 msec period "H" pulse when tape top or tape end is detected.
*3. Pause of period in proportion to reel rotating speed.
*4. Approx. 2 msec period "H" pulse.
*5. Pulse at tape running.
*4. Approx. 2 msec period "H" pulse.
*5. Pulse at tape running.
O
(O.D)
O
(O.D)
O
(O.D)
O
(O.D)
O
(O.D)
PB •
PAUSE
7-4
Signal
Pin No.
I/O
I/O level
ASURA RESET
IC201 $º
I
Normally "H", "L" when service interruption is detected or restored.
ASURA CS
IC201 $¢
I
Chip select signal from timer microprocessor. V period "L" pulse.
S IN 0
IC201 $∞
I
Serial communication data from timer microprocessor. V period "L" pulse.
S OUT 0
IC201 $§
O
Serial communication data to timer microprocessor. V period "L" pulse.
SCLK
IC201 $¶
I
Serial communication clock with timer microprocessor. V period "L" pulse.
7-4. SYSTEM CONTROL – SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-283 BOARD IC201)
Signal
Pin No.
I/O
PB
SLOW
x 2
CUE
REVIEW
REC
AF ENV
IC201 %ª
I
AF RF envelope signal input terminal for automatic tracking.
A MUTE
IC201 (™
L
L
L
*1
H
H
H
H
H
L
L
NAREC P
IC201 !¡
O
L
L
L
L
L
L
L
L
L
H
L
AF REC P
IC201 4
O
L
L
L
L
L
L
L
L
L
H
L
AF SWP
IC201
O
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
FULL ERS
IC201 #§
H
H
H
H
H
H
H
H
H
L
H
7-5. SYSTEM CONTROL – Hi-Fi AUDIO BLOCK INTERFACE (MA-283 BOARD IC201)
REC •
PAUSE
STOP/
FF/
REW
TAPE
LOADING
TAPE
UNLOADING
PB •
PAUSE
*1. 25 Hz 50% duty pulse approx. 5 msec delayed from RF SWP.
Signal
Pin No.
I/O
PB
SLOW
x 2
CUE
REVIEW
REC
NAPB
IC201 (∞
O
L
L
L
H
H
H
H
H
H
L
L
A MUTE
IC201 (™
L
L
L
*1
H
H
H
H
H
L
L
NA SP
IC201 (¢
O
*2
*2
*2
*3
*3
*3
*3
*3
*2
*2
*2
NAREC P
IC201 !¡
O
L
L
L
L
L
L
L
L
L
H
L
FULL ERS
IC201 #§
H
H
H
H
H
H
H
H
H
L
H
7-6. SYSTEM CONTROL – NORMAL AUDIO BLOCK INTERFACE (MA-283 BOARD IC201)
REC •
PAUSE
STOP/
FF/
REW
TAPE
LOADING
TAPE
UNLOADING
PB •
PAUSE
O
(O.D)
O
(O.D)
*1. 25 Hz 50% duty pulse approx. 5 msec delayed from RF SWP.
*2. Selected by REC mode selector. SP mode: "L".
*3. Selected by tape recording mode. SP mode: "L".
*2. Selected by REC mode selector. SP mode: "L".
*3. Selected by tape recording mode. SP mode: "L".
O
(O.D)
O
(O.D)
100
7-5
Signal
Pin No.
I/O
LINE1
IC201 *£
O
L
H
L
LINE2
IC201 *™
O
L
L
H
7-7. SYSTEM CONTROL – INPUT SELECTION BLOCK INTERFACE (MA-283 BOARD IC201)
TUNER
LINE 1
LINE 2
I/O level
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