Yamaha ysp-900 Service Manual

SERVICE MANUAL
DIGITAL SOUND PROJECTOR
YSP-900
■ CONTENTS
TO SERVICE PERSONNEL .......................................... 2
FRONT PANEL .............................................................. 3
REAR PANELS .............................................................. 3
BOTTOM PANEL ........................................................... 4
REMOTE CONTROL PANELS ...................................... 4
SPECIFICATIONS / 参考仕様 ........................................ 5
INTERNAL VIEW ........................................................... 5
SET MENU TABLE / セットメニュー ............................ 6
SERVICE PRECAUTIONS / サービス時の注意事項 ..... 7
DISASSEMBLY PROCEDURES/分解手順 ........... 7–12
UPDATING FIRMWARE/
ファームウェアの書き込み ..................................... 13–23
SELF DIAGNOSIS FUNCTION (DIAG)/
自己診断機能（ダイアグ）..................................... 24–40
DISPLAY DATA ........................................................... 41
IC DATA ................................................................. 42–43
BLOCK DIAGRAM ....................................................... 44
PRINTED CIRCUIT BOARDS................................ 45–53
PIN CONNECTION DIAGRAM .................................... 54
SCHEMATIC DIAGRAMS ...................................... 55–60
REPLACEMENT PARTS LIST .............................. 61–77
REMOTE CONTROL.............................................. 78–79
ADJUSTING SYSTEM PARAMETERS /
拡張メニューを設定する ........................................ 80–82
101035
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
P.O.Box 1, Hamamatsu, Japan
2006 All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
YSP-900
When transporting this unit, be sure to use the unit’s packing materials and box so as to protect
it against any damage, in particular, dents in the front grille during transportation.
本機を輸送する場合、輸送時の破損（特に、フロントグリルのへこみ）等を防ぐために必ず専用の梱
包箱を使用してください。
'06.08

Yamaha ysp-900 Specifications

General

Brand	Yamaha
Model	ysp-900
Category	Recording Equipment
Language	English

Summary

TO SERVICE PERSONNEL

Critical Components Information

Information on components requiring special characteristics for replacement.

Leakage Current Measurement

Procedure for measuring leakage current after service completion.

SPECIFICATIONS

Amplifier Section

Technical details of the amplifier's power and output characteristics.

Speaker Section

Specifications for the speaker units, including drivers and frequency response.

Input/Output/入力/出力

Details of input and output connectors for audio and video signals.

SET MENU TABLE

SERVICE PRECAUTIONS

Cautions for Disassembly and Reassembly

Important notes for safely disassembling and reassembling the unit to prevent damage or injury.

DISASSEMBLY PROCEDURES

DISASSEMBLY PROCEDURES (Continued)

UPDATING FIRMWARE

Required Tools and Software

Lists necessary software, PC requirements, and cables for firmware updates.

Preparation and Precautions

Steps and safety measures to follow before starting the firmware update process.

UPDATING FIRMWARE (Continued)

Operation Procedure: Writing of CPU

Step-by-step instructions for writing firmware to the CPU.

Selecting Data and Port for Transmission

Instructions for selecting firmware files, communication ports, and initiating the writing process.

Operation Procedure: Writing of DSP

Step-by-step instructions for writing firmware to the DSP.

Selecting Firmware and Executing Writing

Selecting firmware files and executing the writing process for DSP application and SPID.

Connecting Power and Activating DIAG Function

Steps to connect power and activate the DIAG function for firmware updates.

Checking SUM Value for Completion

Verifying SUM values after download to confirm successful firmware update.

Writing of DSP APPLICATION / SPID

Procedure for updating DSP application and SPID firmware.

Confirming Software Target and Downloading

Confirming the software target and initiating the firmware download process.

Checking Firmware Version

Verifying the firmware version after the update procedure is complete.

SELF DIAGNOSIS FUNCTION (DIAG)

DIAG MENU Items

Listing of main diagnostic menu items available for unit testing.

SUB MENU Items

Listing of sub-menu options for each diagnostic menu item.

SELF DIAGNOSIS FUNCTION (DIAG) Details

DIAG MENU Items Listing

Listing of additional main diagnostic menu items and their sub-menu options.

SELF DIAGNOSIS FUNCTION (DIAG) (Continued)

Starting DIAG Procedures

Procedure to activate the self-diagnosis function.

Menu Navigation and Functions

Navigating menus, available functions, and initial settings for DIAG mode.

Canceling DIAG

Steps to exit DIAG mode and reset settings.

Details of DIAG Menu

1. DSP THROUGH

Explanation of the DSP THROUGH menu and its signal distribution.

Details of DIAG Menu (Continued)

2. RAM THROUGH

3. PRO LOGIC / NEO6

4. MIC CHECK

8. FACTORY PRESET

Procedure to reset all parameters to factory default settings.

Tx Test

5. DISPLAY CHECK

6. MANUAL TEST

14. DSP CHECK

T1 CHECK

T1 Write

T2 CHECK

IC DATA

IC DATA (Continued)

BLOCK DIAGRAM

PRINTED CIRCUIT BOARDS

PRINTED CIRCUIT BOARDS (Continued)

Safety Measures

Critical safety measures regarding high voltages and capacitor discharge.

PIN CONNECTION DIAGRAM

SCHEMATIC DIAGRAMS

SCHEMATIC DIAGRAMS (Continued)

REPLACEMENT PARTS LIST

REPLACEMENT PARTS LIST (Continued)

P.C.B. DSP

Replacement parts specifically for the DSP P.C.B., including capacitors and connectors.

P.C.B. DSP (Continued)

Further replacement parts for the DSP P.C.B., including capacitors and diodes.

P.C.B. DSP and P.C.B. AMP

Replacement parts for both DSP and Amplifier PCBs, including ICs and connectors.

P.C.B. AMP

Replacement parts for the Amplifier P.C.B., including capacitors and transistors.

P.C.B. AMP and P.C.B. INPUT

Replacement parts for AMP and Input PCBs, including ICs, transistors, and connectors.

P.C.B. INPUT

Replacement parts for the Input P.C.B., including capacitors and resistors.

P.C.B. INPUT (Continued)

Further replacement parts for the Input P.C.B., including resistors, relays, and switches.

Chip Resistors

List of chip resistors available for replacement, with their values and part numbers.

Carbon Resistors

List of carbon resistors with their part numbers and values for different wattage types.

ADJUSTING SYSTEM PARAMETERS

Using the System Parameters

Setting the MEMORY PROTECT

Protecting saved settings from accidental erasure or modification.

Setting the MAX VOLUME

Setting the maximum volume level to prevent exceeding a limit.

ADJUSTING SYSTEM PARAMETERS (Continued)

Setting the TURN ON VOLUME

Setting the initial volume level when the unit is powered on.

Setting the DEMO MODE

Setting the FACTORY PRESET

Resetting all unit parameters to their factory default settings.