HT-6900DP, HT-9900M, HT-9950M, SA-WMSP69 - Sony Audio Service Manual (repair manual)

ht-6900dp, ht-9900m, ht-9950m, sa-wmsp69 service manual
Model
HT-6900DP HT-9900M HT-9950M SA-WMSP69
Pages
11
Size
772.58 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ht-6900dp-ht-9900m-ht-9950m-sa-wmsp69.pdf
Date

Read Sony HT-6900DP / HT-9900M / HT-9950M / SA-WMSP69 Service Manual online

SERVICE MANUAL
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
US Model
SUB WOOFER
9-879-650-01
2005E04-1
© 2005.05
Ver. 1.0  2005.05
SPECIFICATIONS
SA-WMSP69
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6 ohm loads, from 28 – 200 Hz; rated 120
watts, minimum RMS power, with no more than
0.8% total harmonic distortion from 250
milliwatts to rated output.
Speaker system
Active subwoofer,
magnetically shielded
Speaker unit
250 mm cone type
Enclosure type
Acoustically loaded bass
reflex
RMS output
160 W (6 ohms, 100 Hz,
THD 10%)
Input
LINE IN (input pin jacks)
Power requirements
120 V AC, 60 Hz
Power consumption
120 W
Dimensions (w/h/d) (Approx.)
337 
× 410 × 366 mm
(13
 1/4
 
× 16
 1/8
 
× 14
 1/2
 inches)
including front panel
Mass (Approx.)
13.0 kg (28 lb 11 oz)
Design and specifications are subject to change without
notice.
• SA-WMSP69 is the subwoofer section
in HT-6900DP/9900M.
2
SA-WMSP69
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.
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 viscous (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.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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 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” indica-
tion 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)
TABLE OF CONTENTS
1.
DIAGRAMS
1-1.
Circuit Boards Location ..................................................
3
1-2.
Schematic Diagram – Main Section – .............................
5
1-3.
Printed Wiring Boards – Main Section – .........................
6
2.
EXPLODED VIEWS
2-1.
Front Section ...................................................................
7
2-2.
Rear Section ....................................................................
8
3.
ELECTRICAL PARTS LIST
..................................
9
(Fig. A)
3
SA-WMSP69
SECTION 1
DIAGRAMS
1-1. CIRCUIT BOARDS LOCATION
MAIN board
CONTROL board
INPUT board
POWER TRANS board
SWITCH board
4
SA-WMSP69
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
• A : B+ Line.
• B : B– Line.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
   no mark : Power on
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Signal path.
F
: AUDIO
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams:
Note:
• All capacitors are in µF unless otherwise noted.  (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 
1
/
4
 
W or less unless otherwise
specified.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
For printed wiring boards:
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
: Pattern from the side which enables seeing.
Page of 11
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Here you can read online and download Sony HT-6900DP / HT-9900M / HT-9950M / SA-WMSP69 Service Manual in PDF. HT-6900DP / HT-9900M / HT-9950M / SA-WMSP69 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HT-6900DP / HT-9900M / HT-9950M / SA-WMSP69 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.