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Digital Signal Processor section
Modulation High Density Linear
(A/D conversion) Converter
Demodulation High Density Linear
(D/A conversion) Converter (Advanced
Pulse D/A converter)
Sampling 48 kHz
frequency
Surround LFE MIX
MUTE, Ð20 ~ 0 dB, 0.5
dB step
D.RANGE COMP
OFF, 0.1 ~ 0.9, STD,
MAX
REAR level
Ð20 ~ +10 dB, 0.5 dB
step
CENTER level
Ð20 ~ +10 dB, 0.5 dB
step
SUB WOOFER level
Ð20 ~ +10 dB, 0.5 dB
step
WALL
17-step adjustable
SEAT
L/R 17-step adjustable
F/R 17-step adjustable
EFFECT
21-step adjustable
REVERB time
17-step adjustable
Equalizer Band
BASS/TREBLE
Turnover frequency
BASS: 99 Hz ~ 992 Hz
TREBLE: 1.0 kHz ~
8.6 kHz
Level
±10 dB, 0.5 dB step
+0.5
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FM tuner section
Tuning range 87.5 - 108.0 MHz
Antenna 75 ohms, unbalanced
terminals
Sensitivity Mono: 18.3 dBf, 4.5 µV
Stereo: 38.3 dBf, 45 µV
Usable sensitivity 11.2 dBf, 2 µV (IHF)
S/N Mono: 76 dB
Stereo : 70 dB
Harmonic Mono: 0.3 %
distortion at Stereo: 0.5 %
1 kHz
Separation 45 dB at 1 kHz
Frequency 30 Hz - 15 kHz dB
response
Selectivity 60 dB at 400 kHz
AM tuner section
Tuning range With 10 kHz interval*:
530 - 1710 kHz
US, Canadian model
With 9 kHz interval:
531 - 1710 kHz
US, Canadian model
531 - 1602kHz
Australian model
Antenna Loop antenna
Usable sensitivity 50 dB/m (at 1,000 kHz or
999 kHz)
S/N 54 dB (at 50 mV/m)
Harmonic 0.5 % (50 mV/m,
distortion 400 kHz)
Selectivity At 9 kHz: 35 dB
At 10 kHz: 40 dB
* You can change the AM tuning interval be-
tween 9 kHz and 10 kHz. After tuning in any
AM station, turn off the receiver. While hold-
ing down the PRESET + button, press the
POWER switch. When you change the inter-
val, all the preset stations will be erased. To
reset the interval, repeat the same procedure.
US, Canadian modelVideo section
Inputs VIDEO:
1 Vp-p 75 ohms
S-VIDEO:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
Outputs VIDEO:
1 Vp-p 75 ohms
S-VIDEO:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
General
System Tuner section:
PLL quartz-locked
digital synthesizer sys-
tem
Preamplifier section:
Low-noise NF type
equalizer
Power amplifier section:
Pure-complimentary
Parallel P.P.
Power Australian models:
requirements 240 V AC, 50 Hz
US, Canadian models:
120 V AC, 60 Hz
Power Australian models: 430 W
consumption US models: 385 W
Canada models: 550 VA
AC outlets Australian models:
1 switched, total 100 W
US, Canadian models:
2 switched, total 120 W
Dimensions 430 ´ 160 ´ 435 mm
(17 ´ 6
3/8 ´ 17 1/4 inches)
Mass (Approx.) 16.0 kg (35 lb 4 oz)
Supplied ¥ FM wire antenna (1)
accessories ¥ AM loop antenna (1)
¥ Remote commander
(remote) (1)
(remote for US and
Canadian models:
RM-H501)
(Remote for Australian
model: RM-VR101)
¥ Size AA (R6) batteries
(2)
¥ IR repeater (1)
Design and specifications are subject to change
without notice.
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TABLE OF CONTENTS
1. GENERAL
................................................................... 4
2. DISASSEMBLY .......................................................... 5
3. ELECTRICAL ADJUSTMENTS ......................... 7
4. DIAGRAMS
4-1. IC Pin Function Description ............................................ 9
4-2. Printed Wiring Boards Ð DISPLAY Section Ð ................ 27
4-3. Schematic Diagram Ð DISPLAY Section Ð .................... 31
4-4. Schematic Diagram Ð VIDEO Section Ð ......................... 36
4-5. Printed Wiring Boards Ð VIDEO Section Ð .................... 41
4-6. Schematic Diagram
Ð INPUT/TUNER/POWER Section Ð ............................. 45
4-7. Printed Wiring Boards
Ð INPUT/TUNER/POWER Section Ð ............................. 49
4-8. Schematic Diagram Ð DIGITAL Section Ð ...................... 54
4-9. Printed Wiring Board Ð DIGITAL Section Ð .................. 59
4-10. Schematic Diagram Ð AMP/OUTPUT Section Ð ............ 63
4-11. Printed Wiring Boards Ð AMP/OUTPUT Section Ð ....... 67
5. EXPLODED VIEWS ................................................ 75
6. ELECTRICAL PARTS LIST ................................ 79
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE
WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL
OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
Ë LA SƒCURITƒ!
LES COMPOSANTS IDENTIFIƒS PAR UNE MARQUE ! SUR
LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES
PIéCES SONT CRITIQUES POUR LA SƒCURITƒ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIéCES SONY DONT LES NUMƒROS SONT
DONNƒS DANS CE MANUEL OU DANS LES SUPPLƒMENTS
PUBLIƒS PAR SONY.
MODEL IDENTIFICATION
Ð BACK PANEL Ð
US Model : 0 ¹ Canadian Model : 1 ¹ Australian Model : 2 ¹
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, ÒmetallizedÓ knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturersÕ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The ÒlimitÓ indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k W 0.15 µF AC
voltmeter
(0.75 V) To Exposed Metal
Parts on Set
Earth Ground
4-991-373-
