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TA-WR4 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - SURROUND AMPLIFIER SERVICE MANUAL - Sony

भाग संख्या TA-WR4
समारोह SURROUND AMPLIFIER SERVICE MANUAL
मैन्युफैक्चरर्स Sony 
लोगो Sony लोगो 
पूर्व दर्शन
1 Page
		
<?=TA-WR4?> डेटा पत्रक पीडीएफ

TA-WR4 pdf
TA-WR4
http://www.xiaoyu163.com
QQ 376315150Notes on chip component replacement
892498299TABLE OF CONTENTS
Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be
1. GENERAL ................................................................... 3
damaged by heat.
Flexible Circuit Board Repairing
Keep the temperature of the soldering iron around 270 °C
during repairing.
Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
Be careful not to apply force on the conductor when soldering
or unsoldering.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
2. DIAGRAMS
2-1. Block Diagram ................................................................ 5
2-2. Printed Wiring Board — RX AMP Board — ................. 6
2-3. Schematic Diagram — RX AMP Board (1/4) — ........... 7
2-4. Schematic Diagram — RX AMP Board (2/4) — ........... 8
2-5. Schematic Diagram — RX AMP Board (3/4) — ........... 9
2-6. Schematic Diagram — RX AMP Board (4/4) — ........... 10
2-7. Printed Wiring Boards — Power Section — .................. 11
2-8. Schematic Diagram — Power Section — ...................... 12
3. EXPLODED VIEWS
3-1. Overall Section ................................................................ 20
3-2. AMP Section ................................................................... 21
: LEAD FREE MARK
Unleaded solder has the following characteristics.
Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
Strong viscosity
TEL 13942296513Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
SAFETY-RELATED COMPONENT 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
4. ELECTRICAL PARTS LIST .................................. 22
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
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.
QQ 376315150 892498299Check 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)
To Exposed Metal
Parts on Set
AC
0.15 µF
1.5 k
voltmeter
(0.75 V)
www mx aoyu163 co. i
. Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
2
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अनुशंसा डेटापत्रक

भाग संख्याविवरणविनिर्माण
TA-WR4SURROUND AMPLIFIER SERVICE MANUALSony
Sony


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