Sony STR-DB840 Manuals

SERVICE MANUAL FM STEREO/FM-AM RECEIVER US Model Canadian Model AEP Model UK Model STR-DB840/DB940 E Model Australian Model Chinese Model STR-DB940 SPECIFICATIONS STR-DB840/DB940 Photo: STR-DB940 (AEP and UK models) (Black type) – Continued on next page – Manufactured under license from Dolby laboratories. “Dolby”, “AC- 3”, “Pro Logic” and the double-D symbol ; are trademarks of Dolby Laboratories. Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other worldwide patents issued and pending. “DTS” an d “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc. 2 • Abbreviation AU : Australian model CA : Canadian model CED: AEP and UK models CN : Chinese model SP : E model U : US model 3 MODEL IDENTIFICATION – Rear View – 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 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. Fig. A. Using an AC voltmeter to check AC leakage. 1.5 kΩ 0.15 µF AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground 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) Part No. Model DB940: US model DB940: Canadian model E model Chinese model Australian model DB940: AEP and UK models DB840: US model DB840: AEP and UK models DB840: Canadian model Part No. 4-227-151-0s 4-227-151-1s 4-227-151-2s 4-227-151-3s 4-227-151-4s 4-227-151-5s 4-227-151-7s 4-227-151-8s 4-227-151-9s 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.

4-229-127-13(1) FM Stereo FM-AM Receiver Operating Instructions  2000 Sony Corporation STR-DB940 STR-DB840 2 WARNING To prevent fire or shock hazard, do not expose the unit to rain or moisture. For customers in the United States This symbol is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. This symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. INFORMATION This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: – Reorient or relocate the receiving antenna. – Increase the separation between the equipment and receiver. – Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. – Consult the dealer or an experienced radio/TV technician for help. CAUTION You are cautioned that any changes or modification not expressly approved in this manual could void your authority to operate this equipment. Note to CATV system installer: This reminder is provided to call CATV system installer’s attention to Article 820- 40 of the NEC that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical. Owner’s Record The model and serial numbers are located on the rear of the unit. Record the serial number in the space provided below. Refer to them whenever you call upon your Sony dealer regarding this product. Model No. STR-DB940/DB840 Serial No. ENERGY STAR® is a U.S. registered mark. As an ENERGY STAR® partner, Sony Corporation has determined that this product meets the ENERGY STAR® guidelines for energy efficiency. For customers in Canada CAUTION TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE. For customers in Europe To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only. Do not install the appliance in a confined space, such as a bookcase or built-in cabinet. Precautions On safety Should any solid object or liquid fall into the cabinet, unplug the receiver and have it checked by qualified personnel before operating it any further. On power sources • Before operating the receiver, check that the operating voltage is identical with your local power supply. The operating voltage is indicated on the nameplate at the rear of the receiver. • The unit is not disconnected from the AC power source (mains) as long as it is connected to the wall outlet, even if the unit itself has been turned off. • If you are not going to use the receiver for a long time, be sure to disconnect the receiver from the wall outlet. To disconnect the AC power cord, grasp the plug itself; never pull the cord. • One blade of the plug is wider than the other for the purpose of safety and will fit into the wall outlet only one way. If you are unable to insert the plug fully into the outlet, contact your dealer. • AC power cord must be changed only at the qualified service shop. On placement • Place the receiver in a location with adequate ventilation to prevent heat buildup and prolong the life of the receiver. • Do not place the receiver near heat sources, or in a place subject to direct sunlight, excessive dust or mechanical shock. • Do not place anything on top of the cabinet that might block the ventilation holes and cause malfunctions. On operation Before connecting other components, be sure to turn off and unplug the receiver. On cleaning Clean the cabinet, panel and controls with a soft cloth slightly moistened with a mild detergent solution. Do not use any type of abrasive pad, scouring powder or solvent such as alcohol or benzine. If you have any question or problem concerning your receiver, please consult your nearest Sony dealer. 3 Conventions • The instructions in this manual describe the controls on the receiver. You can also use the controls on the supplied remote if they have the same or similar names as those on the receiver. For details on the use of your remote, refer to the separate operating instructions supplied with the remote. • The following icon is used in this manual: z Indicates hints and tips for making the task easier. This receiver incorporates Dolby* Digital and Pro Logic Surround and the DTS** Digital Surround System. * Manufactured under license from Dolby Laboratories. “Dolby”, “AC-3”, “Pro Logic” and the double-D symbol ; are trademarks of Dolby Laboratories. Confidential unpublished Works. © 1992-1997 Dolby Laboratories. All rights reserved. **Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other worldwide patents issued and pending. “DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc. © 1996 Digital Theater Systems, Inc. All rights reserved. 4-XXX-XXX-XX AA 4 Ω 8 Ω B A L R L IMPEDANCE SELECTOR REAR FRONT CENTER AC OUTLET FRONT SPEAKERS IMPEDANCE USE 4 – 16Ω R L L R PRE OUT REAR SUB WOOFER CENTER About This Manual The instructions in this manual are for models STR-DB940 and STR-DB840. Check your model number by looking at the lower right corner of the front panel. In this manual, the STR-DB940 is used for illustration purposes unless stated otherwise. Any difference in operation is clearly indicated in the text, for example, “STR-DB940 only.” Type of differences Model DB940 DB840 Feature 5 audio inputs z 4 audio inputs z TABLE OF CONTENTS Hooking Up the Components 4 Unpacking 4 Antenna Hookups 5 Audio Component Hookups 6 Video Component Hookups 8 Digital Component Hookups 9 5.1CH Input Hookups 11 Other Hookups 12 Hooking Up and Setting Up the Speaker System 15 Speaker System Hookup 16 Performing Initial Setup Operations 18 Multi Channel Surround Setup 19 Before You Use Your Receiver 23 Location of Parts and Basic Operations 26 Front Panel Parts Description 26 Enjoying Surround Sound 31 Selecting a Sound Field 32 Understanding the Multi-Channel Surround Displays 36 Customizing Sound Fields 38 Receiving Broadcasts 43 Storing FM Stations Automatically (AUTOBETICAL)*** 44 Direct Tuning 45 Automatic Tuning 45 Preset Tuning 46 Using the Radio Data System (RDS)*** 47 ***Models of area code CED only. Other Operations 50 Naming Preset Stations and Program Sources 51 Recording 51 Using the Sleep Timer 52 Adjustments Using the SET UP Button 53 CONTROL A1 Control System 54 Additional Information 56 Troubleshooting 56 Specifications 58 Glossary 61 Tables of Settings Using SUR, LEVEL, EQ, and SET UP buttons 62 Index (Back cover) About area codes The area code of the player you purchased is shown on the lower portion of the rear panel (see the illustration below). Any differences in operation, according to the area code, are clearly indicated in the text, for example, “Models of area code AA only”. Area code 4 Hooking Up the Components This chapter describes how to connect various audio and video components to the receiver. Be sure to read the sections for the components you have before you actually connect them to the receiver. Unpacking Check that you received the following items with the remote: • FM wire antenna (1) • AM loop antenna (1) Models of area code U, CA only • Audio/video/control S connecting cord (1) • Control S connecting cord (1) STR-DB940 only • Remote commander RM-LJ304 (remote) (1) • LR6 (size-AA) alkaline batteries (3) STR-DB840 only • Models of area code CED only – Remote commander RM-PP404 (remote) (1) – R6 (size-AA) batteries (2) • Models of other area codes – Remote commander RM-LP204 (remote) (1) – LR6 (size-AA) alkaline batteries (3) Inserting batteries into the remote Insert batteries with the + and – properly oriented in the battery compartment. When using the remote, point it at the remote sensor on the receiver. For details, refer to the operating instructions supplied with your remote. z When to replace batteries Under normal conditions, the batteries should last for about 3 months. When the remote no longer operates the receiver, replace all batteries with new ones. Notes • Do not leave the remote in an extremely hot or humid place. • Do not use a new battery with an old one. • Do not expose the remote sensor to direct sunlight or lighting apparatuses. Doing so may cause a malfunction. • If you don’t use the remote for an extended period of time, remove the batteries to avoid possible damage from battery leakage and corrosion. • This remote is designed for use with alkaline batteries only. Do not use a combination of different battery types. Before you get started • Turn off the power to all components before making any connections. • Do not connect the AC power cord until all of the connections are completed. • Be sure to make connections firmly to avoid hum and noise. • When connecting an audio/video cord, be sure to match the color-coded pins to the appropriate jacks on the components: yellow (video) to yellow; white (left, audio) to white; and red (right, audio) to red.