SONY HCDC770 - Service Manual Immediate Download

SERVICE MANUAL

SACD/DVD RECEIVER

US Model

Canadian Model

HCD-C770/C990

AEP Model

Australian Model

HCD-C770

HCD-C770/C990

Ver 1.6 2004.09

9-874-059-07

Sony Corporation

2004I05-1

Audio Group

Published by Sony Engineering Corporation

SPECIFICATIONS

HCD-C770/C990 is the amplifier, DVD/CD

player and tuner section in DAV-C770/C990.

Model Name Using Similar Mechanism

NEW

Mechanism Type

CDM69-DVBU16

Base Unit Name

DVBU16

Optical Traverse Unit Name

DBU-1

AUDIO POWER SPECIFICATIONS (C770: US model)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 3 ohm loads, both channels driven, from 150 10,000 Hz; rated

70 watts per channel minimum RMS power, with no more than 1 %

total harmonic distortion from 250 milliwatts to rated output.

Amplifier section

Stereo mode (C770)

90 W + 90 W (3 ohms at 1 kHz, THD 10 %)

Surround mode (C770)

Front: 90 W + 90 W

Center*: 90 W

Rear*: 90 W + 90 W (3 ohms at 1 kHz, THD 10 %)

Subwoofer*: 100 W (3 ohms at 100 Hz, THD 10 %)

* Depending on the sound field settings and the source, there may be no sound output.

Inputs (Analog)

VIDEO 1, 2:

Sensitivity: 150 mV

Impedance: 50 kilohms

Inputs (Digital)

VIDEO 2 (optical):

Sensitivity:

Outputs (Analog)

VIDEO 1 (AUDIO OUT):

Voltage: 2 V

Impedance: 1 kilohms

PHONES:

Accepts low- and high-impedance headphones

AUDIO POWER SPECIFICATIONS (C990: US model)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 3 ohm loads, both channels driven, from 150 10,000 Hz; rated

75 watts per channel minimum RMS power, with no more than 1 %

total harmonic distortion from 250 milliwatts to rated output.

Stereo mode (C990)

100 W + 100 W (3 ohms at 1 kHz, THD 10 %)

Surround mode (C990)

Front: 100 W + 100 W

Center*: 100 W

Rear*: 100 W + 100 W (3 ohms at 1 kHz, THD 10 %)

Subwoofer*: 100 W (3 ohms at 100 Hz, THD 10 %)

Continued on next page

Photo: HCD-C770

HCD-C770/C990

Note: Refer to the "5. TEST MODE" (page 22) for another self-diagnosis

function.

Self-diagnosis Function

(When letters/numbers appear in the

display)

When the self-diagnosis function is

activated to prevent the system from

malfunctioning. In this case a five-character

service number (e.g., C 13 00) with a

combination of a letter and digits appears on

the screen and the front panel display. Refer

to the following table.

First three

characters of

the service

number

C 13

C 31

E XX

(xx is a number)

Cause and/or Corrective

Action

The disc is dirty.

, Clean the disc with a soft

cloth.

The disc is not inserted

correctly.

, Re-insert the disc

correctly.

To prevent a malfunction, the

system has performed the self-

diagnosis function.

, Contact your nearest Sony

dealer or local authorized

Sony service facility and

give the 5-character

service number.

Example: E 61 10

C:13:00

SELF DIAGNOSIS FUNCTION

Super Audio CD/DVD system

Laser

Semiconductor laser

(Super Audio CD/DVD:

= 650 nm)

(CD:

= 780 nm)

Emission duration: continuous

Signal format system

NTSC or NTSC/PAL

Frequency response (at 2 CH STEREO mode)

DVD (PCM): 2 Hz to 22 kHz (

±1.0 dB)

CD: 2 Hz to 20 kHz (

±1.0 dB)

Signal-to-noise ratio

More than 80 dB (VIDEO 1 (AUDIO) connectors only)

Harmonic distortion

Less than 0.03 %

FM tuner section

System

PLL quartz-locked digital synthesizer system

Tuning range

North American model:

87.5 108.0 MHz (100 kHz step)

Other models:

87.5 108.0 MHz (50 kHz step)

Antenna

FM wire antenna

Antenna terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz

AM tuner section

System

PLL quartz-locked digital synthesizer system

Tuning range

North American model:

530 1,710 kHz (with the interval set at 10 kHz)

531 1,710 kHz (with the interval set at 9 kHz)

European model:

531 1,602 kHz (with the interval set at 9 kHz)

Other models:

531 1,602 kHz (with the interval set at 9 kHz)

530 1,710 kHz (with the interval set at 10 kHz)

Antenna

Loop antenna

Intermediate frequency

450 kHz

Video section

Inputs

Video: 1 Vp-p 75 ohms

Outputs

Video: 1 Vp-p 75 ohms

S video:

Y: 1 Vp-p 75 ohms

C: 0.286 Vp-p 75 ohms

COMPONENT:

Y: 1 Vp-p 75 ohms

PB/CB, PR/CR: 0.7 Vp-p 75 ohms

General

Power requirements

North American model:

120 V AC, 60 Hz

European model:

230 V AC, 50/60 Hz

Australian model:

220 240 V AC, 50/60 Hz

Power consumption (C770)

135 W (120 V AC) 135 W (230 V AC)

1 W (120 V AC) 2 W (230 V AC)

Dimensions (approx.)

× 70 × 335 mm (14 × 2

7/8 × 13 1/4 inches) (w/h/d)

incl. projecting parts

Mass (approx.)

4.4 kg (9 lb 12 oz)

Operating temperature

5°C to 35°C (41°F to 95°F)

Operating humidity

5 % to 90 %

Design and specifications are subject to change without notice.

355

Power consumption (C990)

140 W (120 V AC)

1 W (120 V AC) (at the Power Saving Mode)

(at the Power Saving Mode)

HCD-C770/C990

Notes on chip component replacement

·Never reuse a disconnected chip component.

· Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

Flexible Circuit Board Repairing

·Keep the temperature of the soldering iron around 270 °C dur-

ing 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.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation exposure.

ATTENTION AU COMPOSANT AYANT RAPPORT

À 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 QUE PAR DES PIÈCES SONY DONT LES

NUMÉROS SONT DONNÉS DANS CE MANUEL OU

DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

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 PUB-

LISHED BY SONY.

This appliance is classified as a

CLASS 1 LASER product. The label

is located on the bottom exterior.

This label is located on the bottom

exterior.

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow-

ing 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 pas-

sive 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

voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

HCD-C770/C990

TABLE OF CONTENTS

SELF DIAGNOSIS FUNCTION ....................................

SERVICING NOTES ...............................................

GENERAL

Location of Controls ......................................................

DISASSEMBLY

3-1. Disassembly Flow ..........................................................

3-2. Front Panel (AL) Section, Side Panel (L)/(R) ............... 10

3-3. Mechanism Deck (CDM69-DVBU16) .......................... 10

3-4. POWER SW Board ........................................................ 11

3-5. AUDIO Board, VIDEO Board ....................................... 11

3-6. AMP Board .................................................................... 12

3-7. POWER Board ............................................................... 12

3-8. DVD Board ..................................................................... 13

3-9. Optical Pick-up (DVBU16) ........................................... 13

3-10. Pick-up Unit (TDP022W) .............................................. 14

3-11. SW Board, Bracket (Top) assy ...................................... 14

3-12. RELAY Board ................................................................ 15

3-13. Motor (Stocker) Assy (Stocker) (M781) ....................... 15

3-14. Motor (Stocker) Assy (Roller) (M771) ......................... 16

3-15. Motor (Stocker) Assy (Mode) (M761) .......................... 16

3-16. Rubber Roller (Slider) Assy .......................................... 17

3-17. Timing Belt (Front/Rear) ............................................... 17

3-18. Cam (Gear) ..................................................................... 18

3-19. SENSOR Board .............................................................. 18

ASSEMBLY

4-1. How to Install the Cam (Eject Lock) ............................. 19

4-2. How to Install the Cam (Gear) ....................................... 19

4-3. How to Install the Gear (Mode 2) .................................. 20

4-4. How to Install the Gear (Mode Cam) ............................ 20

4-5. How to Install the Rotary Encoder (S702),

Gear (Stocker Communication) ..................................... 21

4-6. How to Install the Cam (Stocker U/D) .......................... 21

4-7. How to Install the Stocker Assy ..................................... 22

4-8. Phase Adjustment Between Pinions (Slider)

And Slider-1 to 5 (L/R) .................................................. 23

TEST MODE ............................................................. 24

ELECTRICAL ADJUSTMENT ........................... 31

DIAGRAMS

7-1. Block Diagram RF SERVO Section ....................... 32

7-2. Block Diagram AUDIO (DSP) Section .................. 33

7-3. Block Diagram AUDIO OUT, PANEL Section ..... 34

7-4. Block Diagram VIDEO Section ............................. 35

7-5. Block Diagram

CHANGER, POWER SUPPLY Section ................. 36

7-6. Note for Printed Wiring Boards and

Schematic Diagrams ...................................................... 37

7-7. Printed Wiring Boards RF Section ......................... 38

7-8. Schematic Diagram RF Section .............................. 39

7-9. Printed Wiring Boards CHANGER Section ........... 40

7-10. Schematic Diagram CHANGER Section ............... 41

7-11. Printed Wiring Board

DVD Board (Component Side) ............................... 42

7-12. Printed Wiring Board

DVD Board (Conductor Side) ................................. 43

7-13. Schematic Diagram DVD Board (1/10) ................. 44

7-14. Schematic Diagram DVD Board (2/10) ................. 45

7-15. Schematic Diagram DVD Board (3/10) ................. 46

7-16. Schematic Diagram DVD Board (4/10) ................. 47

7-17. Schematic Diagram DVD Board (5/10) ................. 48

7-18. Schematic Diagram DVD Board (6/10) ................. 49

7-19. Schematic Diagram DVD Board (7/10) ................. 50

7-20. Schematic Diagram DVD Board (8/10) ................. 51

7-21. Schematic Diagram DVD Board (9/10) ................. 52

7-22. Schematic Diagram DVD Board (10/10) ............... 53

7-23. Printed Wiring Board AMP Section (1/2) .............. 54

7-24. Printed Wiring Boards AMP Section (2/2) ............. 55

7-25. Schematic Diagram AMP Section (1/2) ................. 56

7-26. Schematic Diagram AMP Section (2/2) ................. 57

7-27. Printed Wiring Boards AUDIO Section ................. 58

7-28. Schematic Diagram AUDIO Section ...................... 59

7-29. Printed Wiring Board VIDEO Section ................... 60

7-30. Schematic Diagram VIDEO Section ...................... 61

7-31. Printed Wiring Boards

DC-DC CONVERTER Section ............................... 62

7-32. Schematic Diagram

DC-DC CONVERTER Section ............................... 63

7-33. Printed Wiring Boards CONTROL Section ........... 64

7-34. Schematic Diagram CONTROL Section ................ 65

7-35. Printed Wiring Board FL Board ............................. 66

7-36. Schematic Diagram FL Board ................................ 67

7-37. Printed Wiring Boards POWER Section (1/2) ....... 68

7-38. Printed Wiring Boards POWER Section (2/2) ....... 69

7-39. Schematic Diagram POWER Section .................... 70

7-40. IC Pin Function Description .......................................... 88

EXPLODED VIEWS

8-1. General Section ............................................................. 107

8-2. Front Panel Section-1 .................................................... 108

8-3. Front Panel Section-2 .................................................... 109

8-4. Chassis Section-1 .......................................................... 110

8-5. Chassis Section-2 .......................................................... 111

8-6. Chassis Section-3 .......................................................... 112

8-7. Mechanism Deck Section-1 (CDM69-DVBU16) ........ 113

8-8. Mechanism Deck Section-2 (CDM69-DVBU16) ........ 114

8-9. Mechanism Deck Section-3 (CDM69-DVBU16) ........ 115

8-10. Mechanism Deck Section-4 (CDM69-DVBU16) ........ 116

8-11. Mechanism Deck Section-5 (CDM69-DVBU16) ........ 117

8-12. Mechanism Deck Section-6 (CDM69-DVBU16) ........ 118

8-13. Optical Pick-up Section (DVBU16) ............................. 119

ELECTRICAL PARTS LIST ............................. 120

Ver 1.5

HCD-C770/C990

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro-

static 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 emis-

sion, observe from more than 30 cm away from the objective lens.

extension cable

(RF board-DVD board)

(Part No. J-2501-217-A)

extension cable

(DVD board-AMP board)

(Part No. J-8000-024-A)

extension cable

(DVD board-AMP board)

(Part No. J-2501-198-A)

extension cable

(relay board-DVD board)

(Part No. J-2501-143-A)

RELEASING THE DISC SLOT LOCK

The disc slot lock function for the antitheft of an demonstration

disc in the store is equipped.

Releasing Procedure:

1. Press two buttons of [DISC 1] and x simultaneously for five

seconds.

2. The message "UNLOCKED" is displayed and the slot is un-

locked.

Note: When "LOCKED" is displayed, the slot lock is not released by

turning power on/off with the [POWER] button.

CHECKING

OPERATIONS

WITH

REMOTE

COMMANDERS OF DIFFERENT MODELS

Some of the signal of remote commander vary between generation

of player.

Between DAV-S400/S500/S800/C450/C700/C900 and DAV-S550/

S880/C770/C900, remote commander signal codes of

"FUNCTION", "BAND", "ST/MONO" and "MEMORY" are

different.

Take notice of the above when you check the operation with remote

commanders of different models.

Ver 1.6

NOTE OF REPLACING THE DVD BOARD

When replacing the DVD board, since the adjustment value is not

set up correctly, "Drive Auto Adjustment" can't be performed.

In this case, initialize Memory in the following procedures.

Procedure:

1. Set the test mode. (See page 25)

2. Press the [2] key of the remote commander, and set the "DRIVE

MANUAL OPERATION". (See page 26)

3. Press the [6] key of the remote commander, and set the "2-6,

Memory Check". (See page 28)

4. Press the [CLEAR] key of the remote commander, and initial-

ize Memory.

JIG ON REPAIRING

When repairing this set, etc., connect the extension cable as the

figure shown below.