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Yamaha DSP-A2 Service Manual

Yamaha DSP-A2
84 pages
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Yamaha DSP-A2 Specifications

General IconGeneral
Frequency Response20Hz - 20kHz
Total Harmonic Distortion0.015%
TypeAV Amplifier
Input Sensitivity200 mV (Line)
Channel Separation60 dB
Speaker Load Impedance4-16 ohms
Video ConnectionsComposite, S-Video
Surround Sound FormatsDolby Digital, DTS
Signal-to-Noise Ratio100 dB
Dimensions435 x 171 x 476 mm
Damping Factor80 (8 ohms, 1kHz)
Digital Inputs2 Coaxial
DSP ModesCinema DSP
InputsPhono
OutputsSpeaker Outputs

Summary

TO SERVICE PERSONNEL

Critical Components Information

Information on critical components requiring exact replacement with specified parts.

Safety Warnings

Safety warnings regarding impedance selector usage and static discharge prevention.

REAR PANELS

Model-Specific Rear Panel Layouts

Rear panel connection layouts for R, T, B, and G models.

SPECIFICATIONS

Output Power Specifications

Minimum, maximum, and dynamic output power per channel.

Audio Characteristics

Tone control, filters, separation, and RIAA equalization.

Electrical and Physical Specs

Power supply, consumption, dimensions, and weight.

PARAMETER TABLE

DSP Programs and Parameters

Table of DSP programs with delay, room size, and other parameters.

SET MENU TABLE

Speaker and Digital Audio Settings

Settings for speaker configuration and digital audio formats.

Other Menu Settings

Settings for delay, initialization, memory guard, input, and dimmer.

SUPERIMPOSING

Superimposing Display Signal Settings

Settings related to superimposing display signals.

INTERNAL VIEW

Internal Component Identification

Diagram showing internal components with reference numbers.

DISASSEMBLY PROCEDURES

Component Removal Steps

Steps for removing top cover, bottom cover, and front panel.

SELF DIAGNOSIS FUNCTION

Starting and Displaying DIAG

Procedure to start diagnosis and how the menu is displayed.

Error Displays and Causes

Explanation of I PROTECTION, PS PRT, DC PRT, TMP PRT errors.

Protection History Management

Information on how protection history is stored and cleared.

DIAG Menu Navigation and Settings

Canceling DIAG and Menu Operation

Procedure to cancel DIAG and navigate menus.

DIAG Function Settings

Functions available and initial settings for DIAG.

DIAG Menu Details

ANALOG THR. Mode

Details of the analog through diagnostic mode.

DSP THROUGH Modes

Details of the DSP through diagnostic modes.

DSP FULL BIT Mode

Details of the DSP full bit diagnostic mode.

AC3/DTS THR. Mode

Details of the AC3/DTS throughput diagnostic mode.

PRO LOGIC Mode

Details of the Pro Logic diagnostic mode.

SPEAKERS SET Menu

Details of the speaker settings menu.

DISPLAY CHK Mode

Diagnostic check for the FL display section.

MANUAL TEST Mode

Diagnostic test using noise generator.

PRESET Menu

Menu for managing preset data and initialization.

AD DATA CHK Mode

Diagnostic check for A/D conversion values.

IF STATUS Modes

Displays status data from the sub-microprocessor.

SUM/VER/EXIT Menu

Checks DSP microprocessor checksum and software version.

AMP CHECK

Idling Current Confirmation

Procedure to confirm idling current and test points.

IC DATA

IC3: Main CPU Pin Details

Pin details for IC3 (HD64F3337YF16).

IC14: Sub CPU Pin Details

Pin details for IC14 (LC87F5164).

IC4: DSP Pin Details

Pin details for IC4 (YSS918).

IC10: Digital In Pin Details

Pin details for IC10 (PM4007A).

IC3: DIR Pin Details

Pin details for IC3 (YM3436DK).

IC611: Video Pin Details

Pin details for IC611 (LC74781-9626).

DISPLAY DATA

Grid Assignment and Pattern Area

Layout of grid segments and pattern area for display data.

PIN CONNECTION DIAGRAM

IC and Transistor Pinouts

Pinout diagrams for integrated circuits and transistors.

Diode Pin Connections

Pinout diagrams for diodes.

PRINTED CIRCUIT BOARD

Core Board PCB Layouts

PCB layouts for DSP, Digital In, and Function boards.

Peripheral Board PCB Layouts

PCB layouts for Video, Operation, and Main boards.

BLOCK DIAGRAM

Block Diagram Sections

Two-part overall block diagram illustrating signal flow.

SCHEMATIC DIAGRAM

Function Board Schematics

Circuit schematics for Function boards.

Digital In Schematic

Circuit schematic for the Digital In section.

DSP Schematic

Circuit schematic for the DSP section.

Video Board Schematics

Circuit schematics for Video boards.

Operation Board Schematics

Circuit schematics for Operation boards.

Main Board Schematics

Circuit schematics for Main boards.

PARTS LIST

Electrical Parts List

List of electrical components with part numbers and descriptions.

Carbon Resistors List

List of carbon resistors with values and part numbers.

Chip Resistors List

List of chip resistors with values and part numbers.

EXPLODED VIEW

Remote Control Exploded View

Exploded view of the remote control transmitter.

REMOTE CONTROL TRANSMITTER

Transmitter Schematic Diagram

Circuit schematic for the remote control transmitter.

Key Arrangement and Codes

Diagram of key layout and table of fixed codes.

Learning and Macro Key Functions

Explanation of learning, macro, and key action functions.

Remote Control Lighting and Control

Information on key lighting, control transmission, and macro transmission.

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