Sony DPIF-3000 Service manual

DP-IF3000

SERVICE MANUAL

Ver 1.1 2004. 02

• The DP-IF3000 is the digital surround processor that comprises the MDRDS3000.

Manufactured under licence from Dolby Laboratories and Digital Theater Systems, Inc. “Dolby,” “Pro Logic” and the double-D symbol a are trademarks of Dolby Laboratories. “DTS” and “DTS VIRTUAL ” are trademarks of Digital Theater Systems, Inc.

• MDR-DS3000 consists of the following models respectively.

Cordless stereo headphones MDR-IF3000 Digital surround processor DP-IF3000

US Model

Canadian Model

AEP Model

UK Model

E Model

Tourist Model

SPECIFICATIONS

Decoder functions Dolby Digital

Virtual sound function OFF

Modulation System FM-IM (Based on IEC) Secondary carrier wave frequency

Transmission distance Approx. 7 m (23 ft.) to the front Transmission range 20 – 20,000 Hz Distortion rate 1% or less (1 kHz) Audio inputs Optical input

Power requirements DC 9 V (from the supplied AC power

Dimensions Approx. 145 x 150 x 146 mm

Mass Approx. 370 g (14 oz.)

Dolby Pro Logic II DTS

CINEMA MUSIC

Right channel 2.8 MHz Left channel 2.3 MHz

(rectangular-type) x 1 Analogue input (pin jack left/right) x 1

adaptor)

(5 3/4 x 6 x 5 3/4 in.) (w/h/d)

DIGITAL SURROUND PROCESSOR

Sony Corporation

Personal Audio Company Published by Sony Engineering Corporation

DP-IF3000

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 leadfree 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.

TABLE OF CONTENTS

1. GENERAL ............................................................................ 3

2. DISASSEMBLY

2-1. Cabinet (Lower) Assy, Luminous Window Assy,

IF Board ............................................................................... 5

2-2. Digital Board ........................................................................ 6

3. ELECTRICAL ADJUSTMENTS

Oscillation Frequency Adjustment .......................................... 7

RF Level Adjustment............................................................... 7

4. DIAGRAMS

4-1. Block Diagrams ................................................................... 9

4-2. Printed Wiring Board – Digital Section (Side A) – ........... 10

Printed Wiring Board – Digital Section (Side B) – ........... 11

4-3. Schematic Diagram – Digital (1/2)Section – .................... 12

4-4. Schematic Diagram – Digital (2/2)Section – .................... 13

4-5. Printed Wiring Board – IF Section – ................................. 14

4-6. Schematic Diagram – IF Section –.................................... 15

4-7. IC Pin Function Description ............................................. 16

4-8. IC Block Diagram ............................................................. 20

5. EXPLODED VIEW

5-1. Processor Section .............................................................. 21

6. ELECTRICAL PARTS LIST......................................... 22

Repair DP-IF3000 with MDR-IF3000.

SECTION 1

GENERAL

Location and Function of Parts

Front Panel

DP-IF3000

This section is extracted from instruction manual.

INPUT SELECT

DIGITAL

1 Infrared emitte r

Set the emitter in a position so that there is a straight, unobstructed path to the sensor.

2 CHG indica tor

Lights red while charging.

3 INPUT SE LECT switch

Slide to select the input source (DIGITAL/ANALOG) .

ANALOG

CHG

DECODE MODE

DOLBY DIGITAL

DOLBY PRO LOGIC II

DTS

EFFECT

4 DECODE MODE indica tor 5 EFFECT switch

Slide to select the sound field (OFF/ CINEMA/MUSIC).

MUSICCINEMAOF F

DP-IF3000

This section is extracted from instruction manual.

Rear Pane l

1 ATT (attenu ator) switch

Set this switch to “0dB” if the volume is too low at analogue input. Normally, this switch should be set to “-8dB”

2 LINE IN jacks

Connect the audio output jacks on audio or video component (sold separately), such as a video cassette player or TV, to these jacks.

ATT

0dB- 8dB

LINE IN

DIGITAL IN

3 DIGITAL IN jack

Connect a DVD player, or other digital component (sold separately) to this jack.

4 DC IN 9V jack

Connect the supplied AC power adaptor to this jack. (Be sure to use the supplied AC power adaptor. Using products with different plug polarity or other characteristics can cause a malfunction.)

DC IN 9V

SECTION 2

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

SET

CABINET (LOWER) ASSY,

LUMINOUS WINDOW ASSY,

IF BOARD

DIGITAL BOARD

Note : Follow the disassembly procedure in the numerical order given.

DP-IF3000

2-1. CABINET (LOWER) ASSY, LUMINOUS WINDOW ASSY, IF BOARD

cabinet (upper)

IF board

luminous window assy

four screws (+B2.6)

connector (CN501)

cabinet (lower) ass

two screws (+B2.6)

four screws (+B2.6)

DP-IF3000

)

2-2. DIGITAL BOARD

DIGITAL board

claw

screw (+B3

cabinet (lower)

claw

SECTION 3

ELECTRICAL ADJUSTMENTS

DP-IF3000

Notes:

1. These adjustments are performed in the order that they are described.

2. Adjustment and measurement are performed for each channel unless otherwise specified.

3. Adjustment is made for the left channel first and then the right channel.

4. The power voltage is supplied with 9V.

Oscillation Frequency Adjustment

setting:

digital frequenc counter

IF board

TP513 (L-ch) TP514 (R-ch)

Adjustment method:

• Perform this adjustment without signal.

1. S202(INPUT SELECT) is set on the DIGITAL side, and there is no input signal in IC001(DIGITAL IN)(to set the mute state).

Note:

Adjustment can’t be done any more because the luminosity of LED stops when condition without an input signal lasts for more than ten minutes. Move S202(INPUT SELECT) to the ANALOG side, and move ATT SW(S051) in your making LED light sent out again.

2. Connect a digital frequency counter to TP513 for L-ch and TP514 for R-ch on the IF board.

3. Adjust L503 (L-ch) and L501 (R-ch) on the IF board so that the reading on the digital frequency counter is each within 2.3 MHz (L-ch) and 2.8 MHz (R-ch).

RF Level Adjustment

setting:

digital voltmete

IF board

TP513 (L-ch) TP514 (R-ch)

Adjustment method:

• Perform this adjustment without signal.

1. S202(INPUT SELECT) is set on the DIGITAL side, and there is no input signal in IC001(DIGITAL IN)(to set the mute state).

Note:

2. Connect a digital volmeter to TP513 for L-ch and TP514 for R-ch on the IF board.

3. Adjust RV501 (L-ch) and RV502 (R-ch) on the IF board so that the reading on the digital volmeter is 490mV.

Specified Value:

L-ch RV501 487.5 to 492.5 mV

R-ch RV502 487.5 to 492.5 mV

Specified Value:

L-ch L503 2.298 to 2.302 MHz

R-ch L501 2.798 to 2.802 MHz

Adjustment Location:

RF Level Adjustment

– IF board (side A) –

TP514

TP513

RF Level Adjustment

RV502

(R-CH)

RV501

(L-CH)

L501 Oscillation Frequency Adjustment (R-CH)

CN501

L503 Oscillation Frequency Adjustment (L-CH)

DP-IF3000

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.)

SECTION 4

DIAGRAMS

WAVEFORMS

– DIGITAL BOARD –

for schematic diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and specified.

•%: indicates tolerance.

• C : panel designation.

• A : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 9 V and fed with regulated dc power supply from external power voltage jack.

•Voltage is dc with respect to ground under no-signal (detuned) conditions.

•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

• Signal path.

F : ANALOG J : RF c : DIGITAL

for printed wiring boards:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.

These are omitted.

W or less unless otherwise

IC002 wa XOUT

12.288 MHz

IC201 ia X1

250 nsec

IC1201 ol MCLK

80 nsec

IC1201 LRCK0

3.5 Vp-

VOL/DIV : 1V AC TIME/DIV : 50nsec

3.5 Vp-p

VOL/DIV : 1V AC TIME/DIV : 0.1

3.2 Vp-p

VOL/DIV : 1V AC TIME/DIV : 50nsec

108

sec

21 µsec

– IF BOARD –

Q501 E

0.44 µsec

Q507 E

0.36 µsec

3.5 Vp-

VOL/DIV : 1V AC TIME/DIV : 5

VOL/DIV : 0.5V AC TIME/DIV : 0.2

VOL/DIV : 0.5V AC TIME/DIV : 0.2 µsec

1.7 Vp-p

1.7 Vp-

sec

4-1. BLOCK DIAGRAMS

LF051

DP-IF3000

AMP

BATT-SHORT

• Signal Path

: ANALOG

: RF

: DIGITAL

+ 19 hidden pages