Sony STR-DB790 Service Manual

SERVICE MANUAL
FM STEREO FM/AM RECEIVER
SPECIFICATIONS
STR-DA1000ES/DB790
Photo: STR-DA1000ES
Ver. 1.5 2006.11
US Model
Canadian Model
STR-DA1000ES
AEP Model
UK Model
E Model
Australian Model
Chinese Model
STR-DB790
– Continued on next page –
This receiver incorporates Dolby* Digital and Pro
Logic Surround and the DTS** Digital Surround
System.
* Manufactured under license from Dolby
Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are
trademarks of Dolby Laboratories.
**“DTS” and “DTS Digital Surround” are registered
trademarks of Digital Theater Systems, Inc.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(Models of area code U only)
With 8 ohm loads, both channels driven, from
20 – 20,000 Hz; rated 100 watts per channel minimum
RMS power, with no more than 0.09% total harmonic
distortion from 250 milliwatts to rated output.
Amplifier section
POWER OUTPUT
STR-DA1000ES:
Rated Power Output at Stereo Mode
(8 ohms 20 Hz – 20 kHz, THD 0.09%) 100 W + 100 W
(4 ohms 20 Hz – 20 kHz, THD 0.09%) 80 W + 80 W
Reference Power Output
(8 ohms 20 Hz – 20 kHz, THD 0.09%)
FRONT
1)
: 100 W + 100 W
CENTER
1)
: 100 W
SURR
1)
: 100 W + 100 W
SURR BACK
1)
:
100 W + 100 W
(4 ohms 20 Hz – 20 kHz, THD 0.09%)
FRONT
1)
: 80 W + 80 W
CENTER
1)
: 80 W
SURR
1)
: 80 W + 80 W
SURR BACK
1)
:
80 W + 80 W
(8 ohms 1 kHz, THD 0.7%)
FRONT
1)
: 100 W + 100 W
CENTER
1)
: 100 W
SURR
1)
: 100 W + 100 W
SURR BACK
1)
: 100 W
(4 ohms 1 kHz, THD 0.7%)
FRONT
1)
: 90 W + 90 W
CENTER
1)
: 90 W
SURR
1)
: 90 W + 90 W
SURR BACK
1)
: 90 W
(8 ohms 20 Hz – 20 kHz, THD 0.09%)
FRONT
1)
: 90 W + 90 W
CENTER
1)
: 90 W
SURR
1)
: 90 W + 90 W
SURR BACK
1)
: 90 W
(4 ohms 20 Hz – 20 kHz, THD 0.09%)
FRONT
1)
: 80 W + 80 W
CENTER
1)
: 80 W
SURR
1)
: 80 W + 80 W
SURR BACK
1)
: 80 W
1) Depending on the sound field settings and the
source, there may be no sound output.
2) Measured under the following conditions:
3) Measured under the following conditions:
Frequency response
Inputs (Analog)
Area code Power requirements
S
CN
P, MY, CEL, CEK, AU, 230 V AC, 50 Hz
TW 110 V AC, 60 Hz
Area code Power requirements
KR 220 V AC, 50 Hz
PHONO RIAA equalization curve
±0.5 dB
MULTI CH IN, CD/
SACD, MD/TAPE, DVD,
TV/SAT, VIDEO 1, 2, 3
10 Hz – 100 kHz
+0.5/–2 dB (when
ANALOG DIRECT is
selected)
PHONO Sensitivity: 2.5 mV
Impedance: 50 kilohms
S/N
3)
: 86 dB (A, 2.5
mV
4)
)
MULTI CH IN, CD/
SACD, MD/TAPE, DVD,
TV/SAT, VIDEO 1, 2, 3
Sensitivity: 150 mV
Impedance: 50 kilohms
S/N
4)
: 96 dB
(A, 150 mV
5)
)
STR-DB790:
Rated Power Output at Stereo Mode
(8 ohms 1 kHz, THD 0.7%) 90 W + 90 W
3)
(4 ohms 1 kHz, THD 0.7%) 80 W + 80 W
3)
Reference Power Output
2)
9-877-370-06
2006K05-1
© 2006.11
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Sony STR-DB790 Specifications

General

Dimensions (WxDxH)	430 x 401 x 161 mm
Power requirements	230 V, 50/60 Hz
Supported radio bands	FM, MW
Radio Data System (RDS)	Yes
I/O ports	5.1 Analogue Input - 1.0 Audio Input - 3.0 Audio Input Front - 1 AV, S-Video Audio Output - 1.0 Control A1 / A1 II Digital Input: coaxial - 1.0 Digital Input: optical - 4.0 Digital Output: optical - 1.0 Headphone Output Monitor Output (Picture): FBAS - 1.0 Monitor Output (Picture): S-Video - 1.0 Phono Input Speaker Selector A S-Video Input - 4.0 S-Video Output - 1.0 Video Input - 5.0 Video Output - 2.0
Connectivity technology	Wired
Power consumption (standby)	0.5 W
Power consumption (typical)	290 W

Weight and Dimensions

Weight	12500 g

Summary

Receiver Specifications

Audio Power Output and Distortion

Details amplifier power output and total harmonic distortion across different load and frequency conditions.

Safety and Service Notes

Safety Check-Out Procedures

Outlines essential safety checks to perform after service before releasing the unit to the customer.

AC Leakage Test

Specifies the procedure and limits for measuring AC leakage current from exposed metal parts to earth ground.

Disassembly Procedures

Servicing Notes

Model Identification

Identifies different model variations (STR-DA1000ES, STR-DB790) and their corresponding part numbers.

Error Messages and Troubleshooting

Explains error codes displayed by the unit and provides guidance for troubleshooting specific issues like DEC. EROR and PROTECT.

General Information

Front Panel Controls Overview

Illustrates and labels the controls and indicators on the front panel of the receiver.

Remote Commander Operations

STR-DA1000ES Remote Commander Functions

Explains the functions of each button on the RM-LG112 remote commander for the STR-DA1000ES.

STR-DB790 Remote Commander Functions

Explains the functions of each button on the RM-PP412 remote commander for the STR-DB790.

Test Modes

DSP Test Mode Parameters

Electrical Adjustment

Bias Adjustment Procedure

Details the procedure for adjusting bias voltage using a digital voltmeter on MAIN or SBL boards.

Diagrams

IC Block Diagrams

IC Pin Function Descriptions

Details the pin names, I/O, and descriptions for key ICs like the digital interface receiver, signal processor, and system controller.

Electrical Parts List

Service Manual Supplement-1

MAIN Board Change (Suffix-15) and Bias Adjustment Update

Details changes to the MAIN board (suffix-15) and updated bias adjustment values.