Published by Sony Engineering Corporation
FM STEREO FM-AM RECEIVER
-- Continued on next page --
Ver 1.1 2004.10
Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic" and the double-D symbol are trademarks of
"DTS" and "DTS Digital Surround" are registered trademarks of
Digital Theater Systems, Inc.
· STR-K665P is the tuner and the amplifier
section in HT-DDW665.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
With 6 ohm loads, both channels driven, from
- 20,000 Hz; rated 55 watts per channel
minimum RMS power, with no more than 0.7%
total harmonic distortion from 250 milliwatts to
(6 ohms 1 kHz, THD 10%)
FRONT2): 85 W/ch
CENTER2): 85 W
SURR2): 85 W/ch
(6 ohms 100 Hz, THD 10%)
SUB WOOFER2): 85 W
1) Measured under the following conditions:
2) Depending on the sound field settings and the
source, there may be no sound output.
120 V AC, 60 Hz
Sensitivity: 800 mV
Impedance: 50 kiloohms
Reproduction frequency range:
- 20,000 Hz
±6 dB, 1 dB step
Impedance: 75 ohms
FM tuner section
87.5 - 108.0 MHz
FM wire antenna
75 ohms, unbalanced
Design and specifications are subject to change without notice.
AM tuner section
With 10-kHz tuning scale: 530 - 1,710 kHz3)
With 9-kHz tuning scale: 531 - 1,710 kHz3)
3) You can change the AM tuning scale to 9 kHz or
10 kHz. After tuning in any AM station, turn off the
receiver. While holding down PRESET TUNING +
or TUNING +, press ?/1. All preset stations will be
erased when you change the tuning scale. To reset
the scale to 10 kHz (or 9 kHz), repeat the procedure.
120 V AC, 60 Hz
Power consumption (during standby mode)
Dimensions (w/h/d) (Approx.)
× 145 × 301.5 mm
× 5 6/8 × 11 7/8 inches)
including projecting parts
6.5 kg (14 lb 6 oz)
TABLE OF CONTENTS
1. GENERAL ··································································· 4
2. TEST MODE ······································································ 8
3-1. Circuit Board Location ················································· 9
3-2. Block Diagrams MAIN Section ··························· 10
DISPLAY/POWER Section ································· 11
3-3. Printed Wiring Board
DIGITAL Board (Side A) ····································· 12
3-4. Printed Wiring Board
DIGITAL Board (Side B) ····································· 13
3-5. Schematic Diagram DIGITAL Section (1/2) ······· 14
3-6. Schematic Diagram DIGITAL Section (2/2) ······· 15
3-7. Printed Wiring Board MAIN Section ··················· 16
3-8. Schematic Diagram MAIN Section (1/2) ············· 17
3-9. Schematic Diagram MAIN Section (2/2) ············· 18
3-10. Printed Wiring Board SUB WOOFER Board ······ 19
3-11. Schematic Diagram SUB WOOFER Board ········· 19
3-12. Printed Wiring Board POWER Section ··············· 20
3-13. Schematic Diagram POWER Section ·················· 21
3-14. Printed Wiring Board FRONT PANEL Section ··· 22
3-15. Schematic Diagram FRONT PANEL Section ······ 23
3-16. IC Pin Function Descriptions ····································· 27
4. EXPLODED VIEWS
4-1. Front Panel Section ···················································· 29
4-2. Chassis Section ·························································· 30
5. ELECTRICAL PARTS LIST ····································· 31
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.
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
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.
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
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
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.
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 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
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.
To Exposed Metal
Parts on Set
Fig. A. Using an AC voltmeter to check AC leakage.
This section is extracted
from instruction manual.
A.F.D. (button/indicator) 7 (17,
18, 19, 30)
AM ws (13, 14)
DIMMER 3 (15)
DISPLAY 2 (15, 31)
Display 5 (15)
DVD wf (13)
ENTER qa (10, 24)
FM wd (13, 14)
FM MODE w; (13)
Input buttons qh (13, 20, 23, 24)
INPUT MODE qs (20)
(receptor) 4 (25, 31)
MAIN MENU qg (11, 20, 22, 24)
-/+ q; (12,
MEMORY ql (14)
MOVIE (button/indicator) 8
MUSIC (button/indicator) 9 (19,
PHONES (jack) wa (13, 16, 30)
-/+ qj (14,
-/+ qk (13, 33)
VIDEO wg (13)
2CH (button/indicator) 6 (17,
+/- qd (11, 20, 22, 24)
</> qf (11, 20, 22, 24)
?/1 (power) 1 (10, 12, 33)
A - L
M - Z
NUMBERS AND SYMBOLS
67 8 9
To select the AM band.
Selects output signal
from the antenna
terminal: TV signal or
Changes the sound to
Multiplex or Bilingual.
Turns the audio and
video components on or
Selects preset stations.
Selects preset channel.
Adjusts the tracking
when distortion occurs.
CLEAR wa DVD PLAYER/
Press if you make a
mistake when you press
the numeric button or
press to return to
continuous play etc.
displayed on the TV
Enters direct tuning
To watch DVD
Enters the selection.
The tables below show the settings of each
Selects the decoding
mode for audio sound.
ANT MOVIE/MUSIC T.TONE