Read Sony SA-RV900 Service Manual online
3
3
SA-RV900
SECTION 1
GENERAL
• Location of controls
SECTION 2
DIAGRAMS
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
• C : panel designation.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
•
: B+ Line.
•
: B– Line.
• Voltages are dc with respect to ground under no-signal con-
ditions.
no mark : Power on
no mark : Power on
• Voltages are taken with a VOM (Input impedance 10MΩ).
Voltage variations may be noted due to normal preduction
tolerances.
tolerances.
• Signal path.
K
: AUDIO
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
Note:
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
• Abbreviation
E2
: Central and South America model
E3
: Middle and Near East model
E51 : Chilean and Peruvian model
SP
SP
: Singapore model
MX
: Mexican model
AUS : Australia model
ON/OFF
SUBWOOFER
ON/OFF
ON/OFF
POWER ON/OFF
indicator
indicator
LINE IN
SPEAKER IN
SPEAKER OUT
VOLTAGE SELECTOR
(E2,E3,E51,SP model only)
(E2,E3,E51,SP model only)
LINE IN
VOL
REVERSE
PHASE
NORMAL
VOL
PHASE
SPEAKER
IN
L
R
SPEAKER
OUT
L
R
120V
220V
230 - 240V
VOLTAGE SELECTOR
– Front view –
– Rear view –
2-1. IC BLOCK DIAGRAMS
IC201
NJM2072D (MAIN BOARD)
1
2
3
4
8
7
6
5
GND
AMP OUT
GAIN CONT
INPUT
VCC
OUTPUT2
OUTPUT1
RECOVERY
TIME CAP
TIME CAP
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