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STR-K880/K900
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. MODEL IDENTIFICATION
-“ Rear Panel -“
Model Part No.
US model 2-663-098-0
[]
Canadian model 2-663-098-1[]
AEP, UK models 2-663-098-2[]
E51 model 2-663-098-3[]
SP, SP6 models 2-663-098-4[]
AUS model 2-663-098-5 []
Parts No.
-Abbreviation
AU S: Australian model
CND : Canadian model
E51 : Chilean and Peruvian models
SP : Singapore model
SP6 : Singapore and Malaysia models
Reproduction frequency range
28 - 20,000 Hz
T one
FM tuner sectionTun i ng range 87.5 - 108.0 MHz
Ante nna FM wire antenna
Ante nna terminals 75 ohms, unbalanced
Intermediate frequency 10.7 MHz
AM tuner sectionTun i ng ra nge
Models of area code US, CND
With 10-kHz tuning scale:
530 -“ 1,710 kHz
3)
With 9- kHz tuning scale:
531 -“ 1,710 kHz 3)
Antenna Loop antenna
Intermediate frequency
4 50 kHz
3)Yo u c a n change th e 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 ?/1. All preset stations will be
erased when you change the tuning scale. To reset
th e scale to 10 kHz (or 9 kHz), repeat the
procedure.
Video sectionInputs/Outputs
Vid e o: 1 Vp-p, 75 ohms
COMPONENT VIDEO:
Y: 1 V p - p, 75 ohms
P
B/CB/B-Y: 0.7 Vp-p,
75 ohms
P
R/CR/R-Y: 0.7 Vp-p,
75 ohms
80 MHz HD Pass Through
Gain levels ±6 dB, 1 dB step
GeneralPower requirements Power consumption
Power consumption (during standby mode)
0.2 W
Dimensions (w/h/d) (Approx.) 430 157.5 316 mm
( 167 /8 62 /8 124/ 8
inc hes) including
projecting parts and
controls
Mass (App rox.) 8.0 kg (17 lb 11 oz)
Area code Power requirements
US, CND 120 V AC, 60 Hz Area code Power consumption
US 170 W
CND 230 VA
Mo
dels of area code E51
With 10-kHz tuning scale:
530 -“ 1,610 kHz
3)
With 9-kHz tuning scale:
531 -“ 1,602 kHz 3)
Models of area code AEP, UK, AUS, SP, SP6
With 9- kHz tuning scale:
531 -“ 1,602 kHz Antenn
aL oop antenna
Intermediate frequency
450 kHz
AEP, UK 230 V AC, 50/60 Hz
AUS 2 40 V AC, 50 Hz
SP, SP6 230 -“ 240 V AC,
50/ 60 Hz
E51 1 20/220/240 V AC,
50/ 60 Hz
AEP, UK, AUS, SP,
SP6, E51 2
00 W
×
×× ×
Design and specifications are subject to
change without notice.
Ve r.
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STR-K880/K900
TABLE OF CONTENTS
1. GENERAL
................................................................... 4
2. TEST MODE ............................................................... 12
3. DIAGRAMS ................................................................. 14
3-1. Block Diagram -“ MAIN Section -“ .................................. 16
3-2. Block Diagram -“ DISPLAY/POWER Section -“ ............. 17
3-3. Printed Wiring Board -“ DIGITAL Board (Side A) -“ ....... 18
3-4. Printed Wiring Board -“ DIGITAL Board (Side B) -“ ....... 19
3-5. Schematic Diagram -“ DIGITAL Board (1/5) -“ ............... 20
3-6. Schematic Diagram -“ DIGITAL Board (2/5) -“ ............... 21
3-7. Schematic Diagram -“ DIGITAL Board (3/5) -“ ............... 22
3-8. Schematic Diagram -“ DIGITAL Board (4/5) -“ ............... 23
3-9. Schematic Diagram -“ DIGITAL Board (5/5) -“ ............... 24
3-10. Printed Wiring Board -“ MAIN Board -“ .......................... 25
3-11. Schematic Diagram -“ MAIN Board (1/3) -“ .................... 26
3-12. Schematic Diagram -“ MAIN Board (2/3) -“ .................... 27
3-13. Schematic Diagram -“ MAIN Board (3/3) -“ .................... 28
3-14. Printed Wiring Boards -“ DISPLAY Board, POWER Board -“ ............................. 29
3-15. Schematic Diagrams -“ DISPLAY Board, POWER Board -“ ............................. 30
3-16. Printed Wiring Boards -“ STANDBY Board, AC SELECT Board -“ .................... 31
3-17. Printed Wiring Board -“ SPEAKER Board -“ ................... 32
3-18. Schematic Diagram -“ SPEAKER Board, STANDBY Board, AC SELECT Board -“ ....................... 33
3-19. Printed Wiring Board -“ SPEAKER B Board -“ ............... 34
3-20. Printed Wiring Boards -“ ADCC Board, VIDEO 3 Board -“ ................................. 35
3-21. Schematic Diagrams -“ SPEAKER B Board, ADCC Board, VIDEO 3 Board -“ .................................... 36
3-22. Printed Wiring Boards -“ VIDEO Board, HEADPHONE Board -“ ....................... 37
3-23. Schematic Diagram -“ VIDEO Board, HEADPHONE Board -“ ....................... 38
3-24. Printed Wiring Board -“ HDMI Board -“ .......................... 39
3-25. Schematic Diagram -“ HDMI Board -“ ............................. 40
4. EXPLODED VIEWS
4-1. Front Panel Section ......................................................... 49
4-2. Chassis Section-1 ............................................................ 50
4-3. Chassis Section-2 ............................................................ 51
5. ELECTRICAL PARTS LIST .................................. 52
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
PA RT 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
Q UE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
About area codes
Th e 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.
SPEAKERSFRONT B
L
R
L
R
CENTER
SURROUND BACK
SURROUND FRONT A R
R L
L +-“+-“
SPEAKERS
+-“
Area code
