SONY SLV-777, SLV-777HF VCR, VER, SLV-777HF Service Manual
MA-327 (REC/PB AMP) SCHEMATIC DIAGRAM
K
— Ref. No.: MA-327 Board; 1,000 Series —
SLV-777HF/778HF/788HF
MA-327 BOARD
CJ570 A-3
CN101 C-7
CN102 E-2
CN103 I-4
CN104 H-11
CN105 J-12
CN161 H-11
CN260 B-9
CN261 B-7
CN301 B-4
CN302 B-5
CN341 C-10
CN423 C-12
CN602 F-1
CN603 H-1
CNJ980 A-2
CNJ981 A-2
D103 F-6
D109 H-3
D161 I-8
D162 I-8
D370 C-10
D379 B-13
D521 D-1
D560 B-3
D561 A-10
D611 J-1
D612 J-1
D614 J-1
D702 F-12
D980 A-2
D981 A-2
D982 B-1
D983 A-1
D984 A-1
IC101 I-3
IC160 H-9
IC161 I-10
IC162 I-10
IC201 D-5
IC202 E-5
IC260 B-8
IC301 B-5
IC340 B-10
IC360 B-11
IC521 D-1
IC601 E-12
IC733 H-13
IC980 B-1
PH101 H-8
PH102 H-4
Q101 F-1
Q102 F-10
Q103 F-5
Q201 C-3
Q202 C-3
Q208 D-4
Q209 E-4
Q210 E-5
Q211 D-6
Q212 D-2
Q260 B-7
Q301 C-5
Q331 C-6
Q379 A-13
Q386 A-12
Q387 A-12
Q523 C-2
Q524 C-2
Q525 C-1
Q526 D-1
Q560 B-2
Q603 J-3
Q604 J-6
Q605 I-3
Q606 J-2
MA-327
1
2
CN261 1 REC
3
4
5
BOARD
IC260 4 REC
1V/Div
0.1µsec/div
IC260 #º REC
0.5V/Div
0.1µsec/div
IC260 @• REC
20mV/Div
0.1µsec/div
IC260 @™ PB
200mV/Div
0.1µsec/div
IC260 !• REC/PB
H
2.3Vp-p
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
• For printed wiring boards.
• b : Pattern from the side which enables seeing.
Caution :
Pattern face side: Parts on the pattern face side
(Conductor Side) seen from the pattern face are
indicated.
Pattern face side: parts on the parts face side seen
(Component Side) from the parts face are indicated.
• For schematic diagrams.
• Caution when replacing chip parts.
New parts must be attached after removal of chip.
Be careful not to heat the minus side of tantalum
capacitor, because it is damaged by the heat.
• All resistor are in ohms, 1/4W unless otherwise noted.
Chip resistor are 1/10W unless otherwise noted.
kΩ: 1000Ω, MΩ, : 1000kΩ.
• All capacitors are in µF unless otherwise noted. pF : µ
µF. 50V or less are not indicated except f or electrolytics
and tantalums.
• C: panel designation.
•
• A: B+ Line. *
• B: B– Line. *
• J : IN/OUT direction of (+,–) B LINE. *
• Circled numbers refer to waveforms. *
• Readings are taken with a color-bar signal input.
• Voltage are dc between ground and measurement
• Readings are taken with a digital multimeter (DC10MΩ).*
• Voltage v ariations may be noted due to normal production
: internal component.
points.*
tolerances.*
MA-327
REC/PB AMP , VIDEO, AUDIO,
SERVO/SYSTEM CONTROL,
TUNER
JK-162
(LINE-2 IN)
FR-138
(MODE CONTROL)
6
IC260 !¶ REC/PB
CN261 3 REC/PB
POWER BLOC
DM-80
(OPERATION SWITCHES)
5Vp-p
30Hz
4-5
4-6 4-7
When indicating parts by reference number, please
include the board name.
• * : indicated by the color red.
REC/PB AMP
MA-327 (1/8)
SLV-777HF/778HF/788HF
MA-327 (VIDEO, NORMAL AUDIO) SCHEMATIC DIAGRAM
— Ref. No.: MA-327 Board; 1,000 Series —
• See page 4-3 for MA-327 BOARD printed wiring board.
MA-327
7
CN261 2 PB
8
9
!º
BOARD
IC201 !∞ PB
200mV/Div 0.1µsec/div
IC201 !¶ PB
200mV/Div
0.1µsec/div
IC201 @∞ REC
H
IC201 @• REC
0.5Vp-p
!£
IC201 #• REC/ PB
H
!¢
IC201 $∞ PB
H
!∞
IC201 %§ REC
3.579545MHz
550mVp-p
!∞
IC201 %§ PB
2Vp-p
500mVp-p
H
!¡
IC201 #∞ REC
H
!™
IC201 #¶ REC/PB
1Vp-p
3.579545MHz
500mVp-p
!§
IC201 $• REC
IC201 %º REC
1Vp-p
H
!§
IC201 $• PB
IC201 %º PB
H
4Vp-p
H
340mVp-p
0.23Vp-p
VIDEO, NORMAL AUDIO
MA-327 (2/8)
4-8 4-9 4-10
SLV-777HF/778HF/788HF
MA-327 (SERVO/SYSTEM CONTROL) SCHEMATIC DIAGRAM
— Ref. No.: MA-327 Board; 1,000 Series —
• See page 4-3 for MA-327 BOARD printed wiring board.
MA-327
!¶
IC160 !• REC/PB
!•
IC160 !ª
!ª
IC160 #• REC/PB
@º
IC160 $¡ REC/PB
BOARD
(HiFi STEREO MODEL)
5Vp-p
30Hz
2.3Vp-p
16MHz
2Vp-p
32.768kHz
@¢
IC160 *∞ REC/ PB
@∞
IC160 *§ REC/PB
@§
IC160 *¶ REC/PB
4Vp-p 360Hz
4.4Vp-p
1.078kHz
4.5Vp-p
30Hz
@¡
IC160 &¶ REC/PB
@™
IC160 &• REC/PB
@£
IC160 *¢ REC/PB
H
5Vp-p
62.5kHz
5Vp-p
62.5kHz
4Vp-p
@¶
IC160 (™ REC
@•
IC160 (¡ REC
4Vp-p 30Hz
4Vp-p
30Hz
4-11 4-12 4-13
SERVO/SYSTEM CONTROL
MA-327 (3/8)
SLV-777HF/778HF/788HF
SLV-777HF/778HF/788HF
MA-327 (ON SCREEN DISPLAY) SCHEMATIC DIAGRAM
— Ref. No.: MA-327 Board; 1,000 Series —
• See page 4-3 for MA-327 BOARD printed wiring board.
MA-327
@ª
BOARD
IC521 8, !º REC/PB
H
2Vp-p
ON SCREEN DISPLAY
MA-327 (4/8)
4-15 4-16
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