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SAVA-D900/D900FR/
D900R/SS-T900
US Model
SERVICE MANUAL
DVD HOME THEATER
ACTIVE SPEAKER SYSTEM
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
Mechanism Type
CDM53J-DVBU1
Base Unit Type
DVBU1
Optical Pick-up Type
KHM-220AAA
Front Speaker
SAVA-D900FR
Center/Rear Speaker
SS-T900
Woofer Speaker
SAVA-D900R
Main Unit
SAVA-D900
This set is composed of the following table.
-- Continued on next page --
(Photo : SAVA-D900FR)
(Photo : SAVA-D900R)
(Photo : SAVA-D900)
(Photo : SS-T900)
Ver 1.2 2002. 06
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-929-278-13
2002F1600-1
© 2002.06


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SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks 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
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 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 2V AC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
0.15
µF
To Exposed Metal
Parts on Set
1.5k
AC
voltmeter
(0.75V)
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
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.
Flexible Circuit Board Repairing
· Keep the temperature of 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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
This caution
label is located
inside the unit.


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NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the "S curve check" in "CD section adjustment" and check
that the S curve waveform is output several times.
1. GENERAL ......................................................................... 4
2. DISASSEMBLY
2-1. Grille Frame (B) Assy ................................................... 6
2-2. Amplifier Assy .............................................................. 6
2-3. Amplifier Chassis .......................................................... 7
2-4. AMP Board ................................................................... 7
2-5. Power Transformer (T900) ............................................ 8
2-6. PS Board ........................................................................ 8
2-7. Mechanism Section ....................................................... 9
2-8. Video Board ................................................................... 9
2-9. Main Board and DVD Board ....................................... 10
2-10. Mechanism (CDM53J-DVBU1) ................................. 10
2-11. Base Unit (DVBU1) .................................................... 11
2-12. Magnet Assy ................................................................ 11
2-13. Tray (SUB) .................................................................. 12
2-14. Chassis (Mold B), Stocker, Slider (Selection) ............. 12
2-15. How to Assemble the Gears ........................................ 13
2-16. How to Attach the Slider (Selection) ........................... 13
2-17. How to Attach the Stocker ........................................... 14
2-18. How to Attach the Chassis (Mold B) ........................... 14
3. TEST MODE ..................................................................... 15
4. ELECTRICAL ADJUSTMENT ................................. 26
4-1. Adjustment of Video System ....................................... 26
4-2. Adjustment Related Parts Arrangement ...................... 27
5. DIAGRAMS
5-1. Circuit Boards Location .............................................. 28
5-2. Block Diagrams ........................................................... 30
­ DVD Section ­ ......................................................... 30
­ Main Section ­ ......................................................... 31
5-3. Printed Wiring Board ­ DVD Section ­ ...................... 32
5-4. Schematic Diagram ­ DVD (1/12) Section ­ .............. 34
5-5. Schematic Diagram ­ DVD (2/12) Section ­ .............. 35
5-6. Schematic Diagram ­ DVD (3/12) Section ­ .............. 36
5-7. Schematic Diagram ­ DVD (4/12) Section ­ .............. 37
5-8. Schematic Diagram ­ DVD (5/12) Section ­ .............. 38
5-9. Schematic Diagram ­ DVD (6/12) Section ­ .............. 39
5-10. Schematic Diagram ­ DVD (7/12) Section ­ .............. 40
5-11. Schematic Diagram ­ DVD (8/12) Section ­ .............. 41
5-12. Schematic Diagram ­ DVD (9/12) Section ­ .............. 42
5-13. Schematic Diagram ­ DVD (10/12) Section ­ ............ 43
5-14. Schematic Diagram ­ DVD (11/12) Section ­ ............ 44
5-15. Schematic Diagram ­ DVD (12/12) Section ­ ............ 45
5-16. Printed Wiring Board ­ TK Section ­ ......................... 46
5-17. Schematic Diagram ­ TK Section ­ ............................ 47
5-18. Schematic Diagram ­ MAIN Section ­ ...................... 48
5-19. Printed Wiring Board ­ MAIN Section ­ ................... 49
5-20. Schematic Diagram ­ AMP Section ­ ........................ 50
5-21. Printed Wiring Board ­ AMP Section ­ ...................... 51
5-22. Schematic Diagram ­ VIDEO Section ­ ..................... 52
5-23. Printed Wiring Board ­ VIDEO Section ­ .................. 53
5-24. Schematic Diagram ­ DISPLAY Section ­ ................. 54
5-25. Printed Wiring Board ­ DISPLAY Section ­ .............. 55
5-26. Schematic Diagram ­ MOTOR Section ­ ................... 56
5-27. Printed Wiring Board ­ MOTOR Section ­ ................ 57
5-28. Printed Wiring Board ­ PS Section ­ .......................... 58
5-29. Schematic Diagram ­ PS (1/2) Section ­ .................... 60
5-30. Schematic Diagram ­ PS (2/2) Section ­ ................... 61
5-31. Printed Wiring Board ­ POWER Section ­ ................. 62
5-32. IC Pin Functions .......................................................... 63
5-33. IC Block Diagrams ...................................................... 67
TABLE OF CONTENTS
6. EXPLODED VIEWS
6-1. Overall Section ............................................................ 72
6-2. Main Unit (SAVA-D900) Section ................................ 73
6-3. Main Chassis Section .................................................. 74
6-4. Amplifier Chassis Section ........................................... 75
6-5. Mechanism Section-1 (CDM53J-DVBU1) ................. 76
6-6. Mechanism Section-2 (CDM53J-DVBU1) ................. 77
6-7. Woofer Speaker (SAVA-D900R) Section .................... 78
6-8. Front Speaker (SAVA-D900FR) Section ..................... 79
6-9. Center/Rear Speaker (SS-T900) Section ..................... 80
7. ELECTRICAL PARTS LIST
................................. 81


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SECTION 1
GENERAL
This section is extracted
from instruction manual.


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