Sony SLV-K867CH / SLV-K867PS / SLV-K877MN / SLV-K877PS / SLV-K877TK / SLV-KH7ME / SLV-KH7PS / SLV-KH7TK Service Manual ▷ View online
SLV-K867CH/K867PS/K877MN/K877PS/KH7ME/KH7PS
3-9. TUNER BLOCK DIAGRAM
3-21
3-22
SLV-K867CH/K867PS/K877MN/K877PS/KH7ME/KH7PS
3-10. POWER SUPPLY BLOCK DIAGRAM
3-23
3-24E
5-1
SECTION 5
INTERF
ACE, IC PIN FUNCTION DESCRIPTION
SL
V
V
-K867CH/K867PS/K877MN/K877PS/KH7ME/KH7PS
5-1. SYSTEM CONTROL — VIDEO BLOCK INTERFACE (MA-306 BOARD IC161)
Signal name
RF SWP (SW30)
QVD
V SYNC
NT JUDGE
Pin No.
MA-306 IC161 1
MA-306 IC161 4
MA-306 IC161 ^§
MA-306 IC161 &ª
I/O
O
O
I
O
STOP/
FF/
REW
✽1
L
✽4
L
TAPE
THREAD-
ING
✽1
L
✽6
L
TAPE
UNTHREAD-
ING
✽1
L
✽6
L
PB
✽1
✽2
✽6
L
PB ·
PAUSE
✽1
✽3
✽6
L
SLOW
✽1
✽3
✽6
L
×
2
✽1
✽3
✽6
L
CUE
✽1
✽3
✽6
L
REVIEW
✽1
✽3
✽6
L
REC
✽1
L
✽6
L
REC ·
PAUSE
✽1
L
✽6
L
✽1. 25 Hz pulse with 50 % duty cycle. Synchronized with rotation of drum.
✽2. Normally “L”. “H” when CTL signal is not generated.
✽3. V peicd “H” pulse.
✽4. Selected by REC mode. “H” at LP mode.
✽5. Selected by the tape recording mode.
✽6. Composite sync signal (positive polarity).
✽2. Normally “L”. “H” when CTL signal is not generated.
✽3. V peicd “H” pulse.
✽4. Selected by REC mode. “H” at LP mode.
✽5. Selected by the tape recording mode.
✽6. Composite sync signal (positive polarity).
5-2. SYSTEM CONTROL — SERVO PERIPHERAL CIRCUIT INTERFACE (MA-306 BOARD IC161)
*1. 25Hz (PAL), 30Hz (NTSC) pulse.
*2. Pulse at tape running.
*3. Reverse logic pulse of STEP PLS.
*4. “L” when drum rotation stop.
*5. Unstable period pulse.
*6. Pulse of period in proportion to tape speed.
*7. 300Hz (PAL). 360Hz (NTSC) pulse.
*2. Pulse at tape running.
*3. Reverse logic pulse of STEP PLS.
*4. “L” when drum rotation stop.
*5. Unstable period pulse.
*6. Pulse of period in proportion to tape speed.
*7. 300Hz (PAL). 360Hz (NTSC) 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” when FWD slow, “H” when RVS slow.
*9. Approx. 2 msec period “H” or “L” pulse.
*10. Approx. 1.5 msec period “H” or “L” pulse.
*11. “L” when FWD slow, “H” when RVS slow.
Signal
REC CTL
CAP STOP
STEP PLS
PB CTL
DRM PG
DRM FG
CAP FG
CAP DA
DRM DA
CTL RESET
Pin No.
MA-306 IC161 7
MA-306 IC161 #¢
MA-306 IC161 (ª
MA-306 IC161 ^¶
MA-306 IC161 ^•
MA-306 IC161 ^ª
MA-306 IC161 &º
MA-306 IC161 &£
MA-306 IC161 &¢
MA-306 IC161 !º
I/O
O
O (O.D)
O
I
I
I
I
O
O
I/O
STOP
Hi-Z
L
L
H
*4
*4
H/L
*8
*10
Hi-Z
FF
Hi-Z
Hi-Z (O.D)
L
*6
*1
*7
*6
*8
*10
Hi-Z
REW
Hi-Z
Hi-Z (O.D)
L
*6
*1
*7
*6
*8
*10
Hi-Z
TAPE
THREADING
Hi-Z
Hi-Z (O.D)
L
*5
*5
*5
*8
*10
Hi-Z
TAPE
UNTHREADING
Hi-Z
Hi-Z (O.D)
L
*5
*5
*5
*8
*10
Hi-Z
PB
Hi-Z
Hi-Z (O.D)
L
*1
*1
*7
*6
*9
*10
Hi-Z
PB PAUSE
Hi-Z
L
L
H/L
*1
*7
H/L
*8
*10
Hi-Z
SLOW
Hi-Z
*3
*2
*2
*1
*7
*2
*8
*10
*11
CUE
Hi-Z
Hi-Z (O.D)
L
*6
*1
*7
*6
*9
*10
Hi-Z
x 2
Hi-Z
Hi-Z (O.D)
L
*6
*1
*7
*6
*9
*10
Hi-Z
REVIEW
Hi-Z
Hi-Z (O.D)
L
*6
*1
*7
*6
*9
*10
Hi-Z
REC
*1
Hi-Z (O.D)
L
*1
*1
*7
*6
*9
*10
Hi-Z
REC PAUSE
Hi-Z
Hi-Z (O.D)
L
H
*1
*7
H/L
*8
*10
Hi-Z
5-2
5-4. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-306 BOARD IC161)
Signal
ASURA RESET
ASURA CS
S IN 0
S OUT 0
S CLK
Pin No.
MA-306 IC161 $º
MA-306 IC161 $¢
MA-306 IC161 $∞
MA-306 IC161 $§
MA-306 IC161 $¶
I/O
I
I
I
O
I
I/O Level
Normally “H”, “L” when service interruption is detected or restored.
Chip select signal from timer microprocessor. V period “L” pulse.
Serial communication data from timer microprocessor. V period “ L” pulse.
Serial communication data to timer microprocessor. V period “L” pulse.
Serial communication clock from timer microprocessor. V period “L” pulse.
5-5. SYSTEM CONTROL — Hi-Fi AUDIO BLOCK INTERFACE (MA-306 BOARD IC161)
*1. 25 Hz (PAL), 30Hz (NTSC) 50 % duty pulse approx. 5 msec delayed from RF SW P.
5-3. SYSTEM CONTROL — MECHANISM INTERFACE (MA-306 BOARD IC161)
*1. Uncertainly.
*2. “L” when erasing protection tab is bent. “H” when not bent.
*3. Pause of period in proportion to real rotating speed.
*4. Approx. 2 msec period “H” pulse.
*5. Pulse at tape running.
*6. Normally “L”. 2 msec period “H” pulse when tape top or tape
*2. “L” when erasing protection tab is bent. “H” when not bent.
*3. Pause of period in proportion to real rotating speed.
*4. Approx. 2 msec period “H” pulse.
*5. Pulse at tape running.
*6. Normally “L”. 2 msec period “H” pulse when tape top or tape
end is detected.
Signal
CAM2
CAM1
MODE 1
MODE 2
MODE 3
MODE 4
C IN REC PRF
T REEL FG
S REEL FG
T/S LED
CAP STOP
CAP RVS
T SENS
S SENS
Pin No.
MA-306 IC161 9
MA-306 IC161 8
MA-306 IC161 @™
MA-306 IC161 @¡
MA-306 IC161 @º
MA-306 IC160 !ª
MA-306 IC161 !¶
MA-306 IC161 ^¢
MA-306 IC161 ^£
MA-306 IC161 #∞
MA-306 IC161 #¢
MA-306 IC161 &™
MA-306 IC161 ^¡
MA-306 IC161 ^™
I/O
O
O
I
I
I
I
I
I
I
O (O.D)
O (O.D)
O
I
I
EJECTED
Hi-Z
L
H
H
L
L
H
H/L
H/L
*4
L
L
*4
*4
CASSETTE
LOADING
H
L
L
L
L
H
*2
H/L
H/L
*4
L
*4
*4
CASSETTE
UNLOADING
L
L
L
L
L
H
*2
H/L
H/L
*4
L
*4
*4
TAPE
THREADING
H
L
*1
*1
*1
*1
*2
H/L
*3
*4
H
H
*6
*6
TAPE
UNTHREADING
L
L
*1
*1
*1
*1
*2
H/L
*3
*4
H
L
*6
*6
STOP
*7
L
H
H
H
L
*2
H/L
H/L
*4
L
H/L
*6
*6
FF
*7
L
H
H
L
H
*2
*3
*3
*4
H
H
*6
*6
REW
*7
L
H
H
L
H
*2
*3
*3
*4
H
L
*6
*6
PB
*7
L
H
L
L
L
*2
*3
*3
*4
H
H
*6
*6
PB PAUSE
*7
L
H
L
L
L
*2
H/L
H/L
*4
L
H
*6
*6
SLOW
*7
L
H
L
L
L
*2
*3
*3
*4
*5
H/*5
*6
*6
x 2
*7
L
H
L
L
L
*2
*3
*3
*4
H
H
*6
*6
CUE
*7
L
H
L
L
L
*2
*3
*3
*4
H
H
*6
*6
REVIEW
*7
L
L
L
H
L
*2
*3
*3
*4
H
L
*6
*6
REC
*7
L
H
L
L
L
*2
*3
*3
*4
H
H
*6
*6
REC
PAUSE
*7
L
H
L
L
L
*2
H/L
H/L
*4
L
H
*6
*6
*7. When transition to UNLOADING direction : L.
When transition to LOADING direction : H.
When CAM motor is stopped : Hi-Z.
When CAM motor is stopped : Hi-Z.
*8. When RVS slow : mode 1; L.
When RVS slow : mode 2; L.
When RVS slow : mode 3; H.
When RVS slow : mode 4; L.
When RVS slow : mode 3; H.
When RVS slow : mode 4; L.
Signal
AF ENV
A MUTE
AF REC P
AF SWP
FULL ERS
Pin No.
MA-306 IC161 %ª
MA-286 IC160 !•
MA-306 IC161 2
MA-306 IC161 `⁄‚‚
MA-306 IC161 #§
I/O
I
O (O.D)
O
O
O (O.D)
STOP/FF/
REW
L
L
*1
H
TAPE
LOADING
L
L
*1
H
TAPE
UNLOADING
L
L
*1
H
PB
*1
L
*1
H
PB PAUSE
H
L
*1
H
SLOW
H
L
*1
H
x 2
H
L
*1
H
CUE
H
L
*1
H
REVIEW
H
L
*1
H
REC
L
H
*1
L
REC PAUSE
L
L
*1
H
AF RF envelope signal input terminal for automatic tracking.
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