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Sony DPS-V77 Service Manual

Sony DPS-V77
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SERVICE
MANUAL
DPS-V77
US
Model
Canadian
Model
AEP
Model
Australian
Model
SPECIFICATIONS
AID
Converter
DI
A Converter
Sampling
Frequency
Analog Input
Jack
type
XLR-3-31
PHONE
1 Bit /
64
times oversampling
(24
bit resolution)
Advanced
PULSE
0/
A converter (20 bit resolution)
Analog
input
48
kHz
Digital
input
44.1/48
kHz
(auto-switching)
reference
maximum
input
input
level
input
level
impedance
circuit type
+4 dBs
+21
dBs 20
kilohms
balanced
-20
dBs
-2dBs
50
kilohms
unbalanced
or
+4
dEs
or
+21.dEs
o
dBs::::
0.775 Vrms
XLR-3-31 connectors
(1
:
GND
2:
HOT
3:
COLD)
Analog Output
reference
maximum
load
Jack
type·
output
level
output
level
impedance circuit type
XLR-3-32
+4 dBs
+21
dEs
600
ohms
balanced
or
more
PHONE
~20
dEs
-2
dBs 10
kilohms
unbalanced
or
+4
dEs
or
+21
dEs
or
more
o dBs
::::
0.775 Vrms
XLR-3-32 connectors
(1
: GND
2:
HOT
3:
COLD)
DigitallnputlOutput
Terminal type: 8
pin
mini DIN
Pedal Input
Use optional cables RK-V77 A (for AES/EBU)
or
RK-V77S (for SPDIF)
Terminal type:
Standard
PHONE
type
(assignable control terminals x
2)
MlDllnput/Output
Jack: 5 pin DIN (IN x
1,
OUT
/THRU
x
1)
OUT
/THRU
can be set to either OUT
or
THRU
Frequency Response 10 -
22
kHz
+0
,
-1
:0
dB
Signal-to-Noise
Ratio
Dynamic
Range
Distortion
Memory
Power Source
Greater
than
97 dB
Greater than 97 dB
Less then 0.003% (1 kHz)
Preset 198 locations
(99
location preset
bank
x
2)
User 198 locations (99 location
user
bank
x
2)
AC 120 V,
60
Hz
AC 230
V,
50/60
Hz
Power Consumption
23
W (120
V)
25
W (230
V)
Dimensions
Mass
482 x
44
x
32001111
(WxHxD not including
projections)
approx. 4.7 kg
Design
and
specifications subject to change
without
notice.
MUL
TI·EFFECT
PROCESSOR
SONY.

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Sony DPS-V77 Specifications

General IconGeneral
A/D Conversion20-bit
D/A Conversion20-bit
Frequency Response20 Hz - 20 kHz
Digital InputsAES/EBU, S/PDIF
Digital OutputsAES/EBU, S/PDIF
TypeDigital Effects Processor
Total Harmonic Distortion< 0.05%
Input ConnectorsXLR, 1/4" TRS
Output ConnectorsXLR, 1/4" TRS
Inputs2
Outputs2
EffectsReverb, Delay, Chorus, Flanger, Pitch Shift
THD+N< 0.05%
MIDIIn, Out, Thru
Power Supply100-240V AC, 50/60Hz

Summary

SPECIFICATIONS

SAFETY CHECK-OUT (US Model)

Leakage Test Procedure

Procedures for measuring AC leakage current from exposed metal parts to earth ground.

Getting Started

Front and Rear Panel Controls

Identifies and describes the functions of the front and rear panel controls and connectors.

Understanding Signal Flow and Structure

Explains how audio signals are processed through internal blocks and structures.

Analog Input/Output Details

Details analog input/output handling, including priority and level adjustment.

Bypass and Mute Operation Modes

Explains the functionality and usage of bypass and mute modes for signal routing.

Hooking Up

Basic Connection Examples

Demonstrates typical connection methods for instruments and mixers.

Digital Connection Methods

Explains how to use digital I/O connectors for recording and digital signal input.

Choosing an Effect

Recalling Effects from Memory Banks

Step-by-step guide to select and load effects from preset and user memory.

Bypass and Mute Operation

How to activate bypass or mute functions to output original or no sound.

Setting Up Morphing Effects

Configuration for seamless transitions between effects using the morphing feature.

Processing Effects (EDIT)

Editing Effect Parameters

Procedure for modifying effect parameters to create custom sounds.

Efficient Editing Techniques

Tips for faster parameter editing, such as linking channels or tap tempo.

Modifying Effect Structure

How to alter the signal path configuration of effect blocks.

Verifying Structure in Play Mode

How to identify the current effect structure configuration displayed on the unit.

Direct Editing from PLAY Mode

How to edit up to six parameters directly from the main play screen.

Assigning Active Parameters for Editing

Procedure for designating which parameters appear for direct editing on the PLAY screen.

Real Time Control (RTC) Setup

Assigning MIDI controllers to adjust effect parameters in real-time.

Saving Processed Effects (SAVE)

Saving Custom Effects

Steps to store user-created effect settings into memory banks.

User Memory Protection

How to lock user memory numbers to prevent accidental overwrites or deletions.

Managing User Memory Contents

Procedures for copying, moving, exchanging, and deleting user memory effects.

Setting the System Environment

System Clock Configuration

Setting the internal clock for date and time, used for saving effects.

Noise Gate Parameter Setup

Adjusting noise gate attack, release, and threshold for noise reduction.

Dry Sound Cutoff Control

Method to mute the direct input signal, outputting only the effect sound.

Pedal Function Configuration

Assigning functions to external pedals connected to PEDAL 1 or PEDAL 2 jacks.

Additional System Settings

References to other system settings like Bypass, Input, MIDI, User Memory, and Morphing.

Display Mode and Contrast Adjustment

Customizing the display format and contrast for readability.

Using MIDI

Basic MIDI Setup Configuration

Setting MIDI channel, OMNI mode, and OUT/THRU settings.

MIDI Program Table Configuration

Defining how MIDI program change numbers affect memory banks and effects.

Bulk MIDI Data Transmission

Procedure for transmitting all or selected memory data via MIDI.

MIDI Receive Switch Setup

Configuring which MIDI messages (exclusive, program change, control) are received.

Additional Information

Troubleshooting Common Issues

Solutions for common operational problems like no sound or unmodifed effects.

System Block Diagram Overview

High-level schematic showing the main functional blocks of the unit.

SECTION 2 TEST MODE

How to Enter Test Mode

Steps to access the unit's self-test and diagnostic functions.

Function Inspection Test - Part 1

Tests for battery voltage, pedal inputs, jog/shuttle, and switches.

Function Inspection Test - Part 2

Checks for error messages, MIDI port, LCD, and LED functionality.

Completing the Test Mode Procedure

Steps to exit test mode and resume normal operation.

SECTION 3 CLOCK CONSTRUCTION

Unit Clock Source Identification

Identifies the clock sources for the CPU and other internal ICs.

Digital Audio System Clock Configuration

Explains clock conditions for digital audio interface input (external vs. internal).

SECTION 4 IC TERMINAL EXPLANATIONS

DSP IC Terminal Descriptions

Detailed pin assignments and descriptions for the DSP ICs.

Other IC Terminal Descriptions

Pin assignments and descriptions for other integrated circuits used in the unit.

SECTION 5 DIAGRAMS

System Block Diagram Overview

High-level schematic showing the main functional blocks of the unit.

Internal Circuit Board Layout

Identifies the physical location of various circuit boards within the unit.

Printed Wiring Board Layouts

Detailed diagrams of the component placement on printed circuit boards.

Main Schematic Diagram (Part 1)

Detailed electronic schematic of the unit's circuitry (first part).

Main Schematic Diagram (Part 2)

Detailed electronic schematic of the unit's circuitry (second part).

Integrated Circuit Block Diagrams

Specific block diagrams for individual integrated circuits.

SECTION 6 EXPLODED VIEWS

Exploded View: Front Panel Assembly

Diagram showing disassembled front panel components and their part numbers.

Exploded View: Chassis Assembly

Diagram showing disassembled chassis components and their part numbers.

SECTION 7 ELECTRICAL PARTS LIST

Main Electrical Components List

Comprehensive list of electronic components, including part numbers and descriptions.

Hardware Fasteners List

List of screws, bolts, and other hardware used in the unit.

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