Sony SLV-469 / SLV-478 / SLV-677HF / SLV-678HF / SLV-688HF / SLV-L47 / SLV-L48 / SLV-L57 / SLV-L58 / SLV-L67HF / SLV-L68HF / SLV-L77HF / SLV-L78HF / SLV-X50 / SLV-X60HF Service Manual ▷ View online
SLV-478/677HF/678HF/688HF/L47/L48/L57/
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
MA-317 (TUNER) SCHEMATIC DIAGRAM
— Ref. No.: MA-317 board; 1,000 series —
• See page 4-3 for MA-317 BOARD printed wiring board.
4-19
4-20
TUNER
MA-317 (6/7)
SLV-478/677HF/678HF/688HF/L47/L48/L57/
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
MA-317 (POWER SUPPLY) SCHEMATIC DIAGRAM
— Ref. No.: MA-317 board; 1,000 series —
4-21
4-22
• See page 4-3 for MA-317 BOARD printed wiring board.
POWER SUPPLY
MA-317 (7/7)
SLV-478/677HF/678HF/688HF/L47/L48/L57/
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
DS-79 (OPERATION SWITCHES) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
— Ref. No.: DS-79 board; 1,000 series —
JK-161 (LINE IN 2) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
— Ref. No.: JK-161 board; 2,000 series —
4-23
4-24E
OPERATION SWITCHES
DS-79
/
LINE IN 2
JK-161
IF702
DS-79
(OPERATION SWITCHES)
(OPERATION SWITCHES)
JK-161
(LINE IN 2)
SLV-688HF/L57/L58/
L77HF/L78HF/X50
(LINE IN 2)
SLV-688HF/L57/L58/
L77HF/L78HF/X50
MA-317
REC/PB AMP, VIDEO,
SERVO/SYSTEM CONTROL,
AUDIO, MODE CONTROL,
TUNER, POWER SUPPLY
REC/PB AMP, VIDEO,
SERVO/SYSTEM CONTROL,
AUDIO, MODE CONTROL,
TUNER, POWER SUPPLY
ACE ASSEMBLY
5-1
SLV-478/677HF/678HF/688HF/L47/L48/L57/
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
SECTION 5
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1. SYSTEM CONTROL — MECHANISM BLOCK INTERFACE (MA-317 board IC160)
5-2. SYSTEM CONTROL — SERVO PERIPHERAL CIRCUIT INTERFACE
(MA-317 board IC160)
*1.
30 Hz pulse
*2.
Pulse of period in propotion to tape speed.
*3.
30 Hz “H” pulse.
*4.
720 Hz pulse.
*5.
Unstable period pulse.
*6.
DC voltage 1 ~ 5V.
*7.
Hi-Z (2.5V).
Signal
CW
MODE 1
MODE 2
MODE 3
MODE 4
REC PRF
T REEL
S REEL
END LED
T SENS
S SENS
Pin No.
MA-317 Board
IC160 %•
MA-317 Board
IC160 @ª
MA-317 Board
IC160 @•
MA-317 Board
IC160 @¶
MA-317 Board
IC160 @§
MA-317 Board
IC160 #º
MA-317 Board
IC160 *º
MA-317 Board
IC160 &ª
MA-317 Board
IC160 @º
MA-317 Board
IC160 7
MA-317 Board
IC160 6
IC160 %•
MA-317 Board
IC160 @ª
MA-317 Board
IC160 @•
MA-317 Board
IC160 @¶
MA-317 Board
IC160 @§
MA-317 Board
IC160 #º
MA-317 Board
IC160 *º
MA-317 Board
IC160 &ª
MA-317 Board
IC160 @º
MA-317 Board
IC160 7
MA-317 Board
IC160 6
I/O
O
I
I
I
I
I
I
I
O
I
I
EJECTED
*5
—
—
—
—
L
H/L
H/L
L
*3
*3
CASSETTE
LOARDING
H
—
—
—
—
*1
H/L
H/L
*3
*3
*3
TAPE
THREADING
H
—
—
—
—
*1
H/L
*2
*3
*4
*4
TAPE
UNTEREADING
L
—
—
—
—
*1
H/L
*2
*3
*4
*4
STOP
*5
H
L
H
H
*1
H/L
H/L
*3
*4
*4
FF
*5
H
L
H
L
*1
*2
*2
*3
*4
*4
REW
*5
H
L
H
L
*1
*2
*2
*3
*4
*4
PB
*5
H
H
L
L
*1
*2
*2
*3
*4
*4
REC
*5
H
H
L
L
*1
*2
*2
*3
*4
*4
CASSETTE
UNLOARDING
L
—
—
—
—
*1
H/L
H/L
*3
*3
*3
Signal
CTL IN+
DRUM PG
DRUM FG
CAP FG
CAP RVS
CAP ERR
DRUM ERR
Pin No.
MA-317 Board
IC160 (™
MA-317 Board
IC160 *§
MA-317 Board
IC160 *¶
MA-317 Board
IC160 *∞
MA-317 Board
IC160 !§
MA-317 Board
IC160 &¶
MA-317 Board
IC160 &•
IC160 (™
MA-317 Board
IC160 *§
MA-317 Board
IC160 *¶
MA-317 Board
IC160 *∞
MA-317 Board
IC160 !§
MA-317 Board
IC160 &¶
MA-317 Board
IC160 &•
I/O
O
I
I
I
O
O
O
STOP
*7
*3
*4
H/L
H/L
L
*6
FF
*7
*3
*4
*2
L
*6
*6
REW
*7
*3
*4
*2
H
*6
*6
REC
*1
*3
*4
*2
L
*6
*6
TAPE
THREADING
*7
*3
*4
*5
L
*6
*6
TAPE
UNTHREADING
*7
*3
*4
*5
H
*6
*6
PB
*7
*3
*4
*2
L
*6
*6
*1.
“L” When erasing protection tab is bent. “H” when not bent.
*2.
Pulse of period in proportion to reel rotating speed.
*3.
Approx. 2 msec period “H” pulse when tape top or end is detected.
*4.
Normally “L”. 2 msec period “H” pulse when tape top or end is detected.
*5.
Hi-Z
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