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Extracted text from sony hcd rxd 6av service manual (Ocr-read)
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AM tuner sectionTuning range 530 - 1,710 kHz
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
GeneralPower requirements 120 V AC, 60 Hz
Power consumption 190 W
Dimensions (w/h/d) Approx. 280 ´ 340 ´ 390 mm
(11
1/8 ´ 13 1/2 ´ 15 3/8 in.)
Mass: Approx. 9.4 kg
(20 lb 12 oz.)
Supplied accessories: AM loop antenna (1)
Remote (1)
FM lead antenna (1)
Speaker cords (2)
Center speaker pads (4)
Design and specifications are subject to change without notice.
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.
SAFETY CHECK-OUT
(US model only)
After correcting the original service problem, perform the
following safety checks 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
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 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 2V AC range are suitable. (See
Fig. A)
Earth GroundAC
voltmeter
(0.75V) 1.5k
½ 0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
To Exposed Metal
Parts on Set
ATTENTION AU COMPOSANT AYANT RAPPORT
Ë LA SƒCURITƒ!
LES COMPOSANTS IDENTIFƒS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT
CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY
DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU
DANS LES SUPPƒMENTS PUBLIƒS PAR SONY.
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SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
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.
Flexible Circuit Board Repairing
¥ Keep the temperature of the soldering iron around 270 ûC dur-
ing 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. NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
1. SERVICING NOTES ááááááááááááááááááááááááááááááááááááááááááááááááááá\
3
2. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááá 4
3. DISASSEMBLY
3-1. CD door ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááááááá 6
3-2. CD Mechanism Deck ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááá 6
3-3. Front Panel ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááááááá 7
3-4. Main Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááááááá 7
3-5. Key Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááááááááá 8
3-6. Mech Deck ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááááááá 8
3-7. Front Panel (B) ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááá 9
3-8. Front Board, H/P Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááá 9
3-9. Front AMP Board, AMP Board, Photo Socket Board, Fuse
Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááááááááá 10
3-10. CD Tray ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááááá 10
3-11. CD Decord Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááá 11
3-12. Base Unit ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááá 12
3-13. Cassette Lid (A)/(B) ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááá 12
4. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááá 13
5. MECHANICAL ADJUSTMENTS áááááááááááááááááááááááááá 14
6. ELECTRICAL ADJUSTMENTS ááááááááááááááááááááááááááá 14
7. DIAGRAMS
7-1. Block Diagrams
Tuner CD Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááá 19
Main Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááá 20
7-2. Circrit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\
á 21
7-3. Printed Wiring Board Main Section áááááááááááááááááááááááááááááá 22
7-4. Schematic Diagram Tuner Section áááááááááááááááááááááááááááááááá 23
7-5. Schematic Diagram Dolby Section ááááááááááááááááááááááááááááááá 24
7-6. Schematic Diagram Tape Power Section ááááááááááááááááááááááá 25
7-7. Printed Wiring Board Front Section áááááááááááááááááááááááááááááá 26
7-8. Schematic Diagram Front Section ááááááááááááááááááááááááááááááááá 27
7-9. Printed Wiring Board FLD Section ááááááááááááááááááááááááááááááá 28
7-10. Schematic Diagram FLD Section áááááááááááááááááááááááááááááááááá 29
7-11. Printed Wiring Board CD Section ááááááááááááááááááááááááááááááááá 30
7-12. Schematic Diagram CD Section áááááááááááááááááááááááááááááááááááá 31
7-13. Printed Wiring Board Center/Rear AMP Section áááááááááá 32
7-14. Schematic Diagram Center/Rear AMP Section ááááááááááááá 33
7-15. Schematic Diagram Front AMP Section ááááááááááááááááááááááá 34
7-16. Printed Wiring Board Front AMP Section áááááááááááááááááááá 35
7-17. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááá 36
7-23. IC PIN Function Description áááááááááááááááááááááááááááááááááááááááááááá 40
8. EXPLODED VIEWS
8-1. Cabinet Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááá 42
8-2. Front Panel Section-1 ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááá 43
8-3. Front Panel Section-2 ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááá 44
8-4. CD Mechanism Deck Section-1 ááááááááááááááááááááááááááááááááááááááá 45
8-5. CD Mechanism Deck Section-2 ááááááááááááááááááááááááááááááááááááááá 46
8-6. Base Unit Section (KSM-213ECM) ááááááááááááááááááááááááááááááááá 47
9. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááá 48
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