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Onkyo TX-DS838 Service Manual

Onkyo TX-DS838
37 pages
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Onkyo TX-DS838 Specifications

General IconGeneral
BrandOnkyo
ModelTX-DS838
CategoryReceiver
LanguageEnglish

Summary

SAFETY-RELATED COMPONENT WARNING!!

SPECIFICATIONS

AMPLIFIER SECTION

Technical specifications for the amplifier circuitry and output power.

TUNER SECTION

Technical specifications related to FM and AM tuning capabilities.

GENERAL

General specifications including power supply, dimensions, and weight.

SERVICE GUIDE

Replacing the fuses

Procedure for safely replacing fuses in the unit.

To Initialize the unit

Steps to reset the unit to factory default settings.

Safety-check out

Safety checks required after servicing the unit.

Change of voltage

Instructions for changing the unit's voltage setting for different power supplies.

Memory preservation

Explanation of the unit's memory backup system and maintenance.

Setting the tuning step frequency

How to adjust the AM tuning step for different regions.

Changing the band step

Procedure for changing the AM band step frequency.

TUNEDR SECTION BLOCK DIAGRAM

VIDEO SECTION BLOCK DIAGRAM

POWER SUPPLY SECTION BLOCK DIAGRAM

MAIN MICROPROCESSOR CONNECTION DIAGRAM

MICROPROCESSOR-TERMINAL DESCRIPTIONS (PAGE 8)

SUB MICROPROCESSOR CONNECTION DIAGRAM

MICROPROCESSOR-TERMINAL DESCRIPTIONS (PAGE 11)

ADJUSTMENT PROCEDURES

Preparation

Initial steps for performing adjustments, including input signal setup.

Idling Current Adjustment

Procedure for setting the idling current on the main amplifier.

ADJUSTMENT PROCEDURES

FM ADJUSTMENT

Detailed steps for adjusting FM reception parameters.

AM ADJUSTMENT

Detailed steps for adjusting AM reception parameters.

SCHEMATIC DIAGRAM

MAIN CIRCUIT PC BOARD PARTS LIST

DSP CIRCUIT PC BOARD PARTS LIST

AC-3 TERMINAL PC BOARD PARTS LIST

FRONT AND CENTER MAIN AMP. PC BOARD PARTS LIST

TRANSISTOR TERMINAL PC BOARD PARTS LIST

BIAS TRANSISTOR PC BOARD PARTS LIST

HEADPHONE TERMINAL PC BOARD PARTS LIST

AC OUTLET TERMINAL PC BOARD PARTS LIST

POWER SUPPLY CIRCUIT PC BOARD PARTS LIST

SECONDARY CIRCUIT PC BOARD PARTS LIST

SPEAKER TERMINAL PC BOARD PARTS LIST

VOLUME CIRCUIT PC BOARD PARTS LIST

PRE., OUTPUT PC BOARD PARTS LIST

TONE CONTROL CIRCUIT PC BOARD PARTS LIST

RI/MR TERMINAL PC BOARD PARTS LIST

SURROUND AMPLIFIER PC BOARD PARTS LIST

S VIDEO CIRCUIT PC BOARD PARTS LIST

ON SCREEN CIRCUIT PC BOARD PARTS LIST

DISPLAY CIRCUIT PC BOARD PARTS LIST

TUNER CIRCUIT PC BOARD PARTS LIST

EXPLODED VIEW

EXPLODED VIEW-PARTS LIST

PACKING VIEW

Accessory bag assembly

Contents of the accessory bag provided with the unit.

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