KYE Systems Corp. Genius SP-F350

Need help?

Do you have a question about the KYE Systems Corp. Genius SP-F350 and is the answer not in the manual?

Summary

Getting Started

Conventions Used in this Guide

Explains special notations like Pay Special Attention and Caution for clear understanding.

Safety Precautions

Details crucial precautions for handling speakers, environment, and maintenance to prevent damage or injury.

Handling Defective Returns

Overview of Defective Returns Process

Flowchart illustrating the process of receiving, verifying, analyzing, and returning defective speakers.

Common Speaker Problems Identified

Lists common issues like no sound on L/R channels and no power.

Troubleshooting L;R Channels No Sound

Provides causes and solutions for the L/R channels no sound issue, including checking circuits and components.

Troubleshooting No Power

Outlines causes and solutions for the no power issue, involving circuit checks and component replacement.

Important Notes for Service

Packing Requirements for PCB Assembly

Guidelines for securely packing PCB assemblies for post to prevent damage and static electricity.

Handling Shortage of Spare Parts

Recommendation on how to manage spare parts when multiple systems are awaiting repair.

This document serves as a service guide for the SP-F350 speaker system, providing detailed information for troubleshooting, repair, and maintenance. It covers various aspects from general overview and specifications to detailed exploded views, part lists, and schematic diagrams. The guide is intended for service personnel to effectively handle defective returns and perform necessary repairs.

Function Description

The SP-F350 is a speaker system designed to output audio. It features left and right channels for stereo sound and includes controls for tone, 3D effect, and volume. The system comprises a host unit (woofer) and satellite speakers. The host unit houses the main circuitry, transformer, and controls, while the satellite speakers are responsible for delivering the primary audio output. The system is designed for general audio playback, likely for use with computers or other audio sources.

Important Technical Specifications

The service guide provides specifications for the satellite speakers at 1KHz:

Out Power at THD 10%: 9 ± 0.5 W
Sensitivity: 400 ± 40 mV
Freq Response (Ref: -3dB): 50 ~ 20K Hz
Separation: > 30 dB
S/N ratio: > 40 dB
Hum & Noise (Vol: max): < 5 mV

Key components identified in the part list include:

Speaker Unit: A-309, 3" 4 OHM/5W (two units)
IC: TDA2007 (one unit)
VR+SW SWITCH: B50K (one unit)
Transformer: 230V:15V AC / 0.7A (one unit)
Rotary Switch: B50K (one unit)

The system also includes various cables for audio input (2ST to 0 ST, 1RCA to 0RCA, 1ST to 1 ST 30cm) and a power cord (BLCK, EU).

Usage Features

The SP-F350 speaker system is designed for straightforward audio playback. Users can adjust the sound output using the "TONE," "3D," and "VOLUME" controls located on the host unit. The system is equipped with a power switch for turning it on and off. The design includes an iron net and a front shell for protection and aesthetics. The exploded view indicates a "Push button" on the host unit, which could be for power or another function.

Maintenance Features

The service guide is primarily focused on maintenance and repair. It outlines a systematic approach to handling defective returns, starting from verifying problems and proceeding with necessary tests.

Troubleshooting Flowcharts: The guide provides flowcharts for common issues:

L/R channels no sound:
- Causes: Broken or short circuit, defective components (U1, VR1, VR2, PhoneJK, various capacitors and resistors), speaker cable disconnect, or damaged speaker.
- Solutions: Check solder points on PCB, check and replace defective IC or components, re-connect speaker cable, or replace defective speakers.
No power:
- Causes: Broken or short circuit, defective components (D1~D4, C16, Power SW, Transformer), speaker cable disconnect, or damaged speaker.
- Solutions: Check solder points on PCB, check and replace defective components, re-connect speaker cable, or replace defective speakers.

Safety Precautions for Maintenance:

Place speakers on a flat, stable surface.
Avoid environments with mist, smoke, vibration, excessive dust, salty/greasy air, or corrosive gases.
Do not drop or jolt speakers.
Prevent objects from falling into the subwoofer ventilator to avoid electric shock or fire.
Ensure adequate heat dissipation by placing the unit away from other equipment.
Always disconnect the AC power cord before maintenance.
Do not perform maintenance with wet hands.
Prevent foreign substances (water, liquids, chemicals) from entering speakers during maintenance.

Packing Requirements for PCB Assembly:

PCB assemblies are sophisticated electronic circuit boards and require careful packing when sent by post.
Each PCB assembly should be packed in a separate static protecting bag to prevent static electricity damage.
Reliable external packing is crucial to prevent loss or damage during transit.

Spare Parts Management:

In situations where spare parts are scarce for multiple speaker systems awaiting repair, it is recommended to salvage necessary parts from one system to repair others, maximizing the number of functional units.

The guide includes detailed diagrams such as an exploded view of both the host (woofer) and satellite speakers, a part list with descriptions, quantities, units, and part numbers, and a schematic diagram for in-depth electrical troubleshooting. These resources are essential for technicians to identify, replace, and repair components effectively.