Sony STRDG820 - STR AV Receiver, Руководство по обслуживанию

Страница: 2 / 96

STR-DG820
2
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
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, “metallized” 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 microamperes.).
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 manufacturers’ 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 “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
μ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
About area codes
The area code of the receiver you purchased is
shown on the lower right portion of the rear panel
(see the illustration below).
Any differences in operation, according to the area
code, are clearly indicated in the text, for example,
“Models of area code AA only”.
SPEAKERS
SPEAKERS
CENTER
SURROUND BACK
FRONT A FRONT B
L
R
SURROUND
L
R
L
L
R
R
Area code
AM tuner section
Tuning range
Antenna (aerial) Loop antenna
Intermediate frequency
450 kHz
5)
You can change the AM tuning scale to 9 kHz or
10 kHz. After tuning in any AM station, turn off
the receiver. While holding down TUNING
MODE, press POWER on the receiver. All preset
stations will be erased when you change the tuning
scale. To reset the scale to 10 kHz (or 9 kHz),
repeat the procedure.
Video section
Inputs/Outputs
Video: 1 Vp-p, 75 ohms
COMPONENT VIDEO:
Y: 1 Vp-p, 75 ohms
P
B
/C
B
: 0.7 Vp-p, 75 ohms
P
R
/C
R
: 0.7 Vp-p, 75 ohms
80 MHz HD Pass Through
Area code Tuning scale
10 kHz step 9 kHz step
CEL, CEK, ECE – 531 kHz –
1,602 kHz
U, CA 530 kHz –
1,710 kHz
5)
531 kHz –
1,710 kHz
5)
General
Power requirements
Power output (DIGITAL MEDIA PORT)
DC OUT: 5V, 0.7 A MAX
Power consumption
Power consumption (during standby mode)
0.7 W
(When “CTRL:HDMI” in
HDMI menu is set to
“CTRL OFF”)
Dimensions (width/height/depth) (Approx.)
17 × 6 1/4 × 12 5/8 inches
(430 × 157.5 × 318 mm)
including projecting parts
and controls
Mass (Approx.) 18 lb 12 oz (8.5 kg) (U, CA)
8.4 kg (CEL, CEK, ECE)
Supplied accessories
Operating instructions
Quick Setup Guide (1)
FM wire antenna (aerial) (1)
AM loop antenna (aerial) (1)
Remote commander (RM-AAP021) (1)
R6 (size-AA) batteries (2)
Optimizer microphone (ECM-AC2) (1)
Design and specifications are subject to
change without notice.
Area code Power consumption
U 250 W
CA 320 VA
CEL, CEL, ECE 230 W
Area code Power requirements
U, CA 120 V AC, 60 Hz
CEL, CEK, ECE 230 V AC, 50/60 Hz
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COM- POSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.