This is the 46 pages manual for sony str k 700 service manual. Read or download the pdf for free.
If you want to contribute, please mail your pdfs to info@audioservicemanuals.com.
Page: 1 / 46
Extracted text from sony str k 700 service manual (Ocr-read)
Page 1
2
STR-K700
Notes on chip component replacement
-Never reuse a disconnected chip component.
-Notice that the minus side of a tantalum capacitor may be
damaged by heat.
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)
: 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
Unleaded 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.
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.
CENTER FRONT L RL R
+ +
Area code
MODEL IDENTIFICATION
-“ Rear Panel -“
Model Part No.
US model 2-661-458-0[]
Canadian model 2-661-458-1[]
Parts No.
General
Power requirements
Power consumption
Power consumption (during standby mode)
0.2 W
Dimensions (w/h/d) (Approx.)
17 × 5 6/8 × 12 1/8 inches
including projecting parts
and controls
Mass (Approx.) 16 lb 9 oz 120 V AC, 60 Hz
Area code Power consumption
US 210 W
Canadian 290 VA
Design and specifications are subject to
change without notice.
Page 2
3
STR-K700
TABLE OF CONTENTS
1. GENERAL
................................................................... 4
2. TEST MODE ............................................................... 10
3. DIAGRAMS
3-1. Block Diagram -“ MAIN Section -“ .................................. 12
3-2. Block Diagram -“ DISPLAY/POWER Section -“ ............. 13
3-3. Printed Wiring Board -“ DIGITAL Board (Side A) -“ ...... 14
3-4. Printed Wiring Board -“ DIGITAL Board (Side B) -“ ...... 15
3-5. Schematic Diagram -“ DIGITAL Board (1/3) -“ .............. 16
3-6. Schematic Diagram -“ DIGITAL Board (2/3) -“ .............. 17
3-7. Schematic Diagram -“ DIGITAL Board (3/3) -“ .............. 18
3-8. Printed Wiring Board -“ MAIN Board -“ ......................... 19
3-9. Schematic Diagram -“ MAIN Board (1/3) -“ ................... 20
3-10. Schematic Diagram -“ MAIN Board (2/3),
HEADPHONE Board -“ ................................................... 21
3-11. Schematic Diagram -“ MAIN Board (3/3), ADCC Board,
STANDBY Board -“ ......................................................... 22
3-12. Printed Wiring Boards
-“ ADCC Board, HEADPHONE Board -“ ........................ 23
3-13. Printed Wiring Board -“ STANDBY Board -“ ................. 24
3-14. Printed Wiring Boards
-“ DISPLAY Board, POWER Board -“ ............................. 25
3-15. Schematic Diagram
-“ DISPLAY Board, POWER Board -“ ............................. 26
4. EXPLODED VIEWS
4-1. Front Panel Section ......................................................... 34
4-2. Chassis Section ................................................................ 35
5. ELECTRICAL PARTS LIST .................................. 36 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.
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 -„¦ 0.15 µF AC
voltmete r (0.75 V) To Exposed Metal
Parts on Set
Earth Ground
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
Ã- LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.