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Digital integrated loudspeaker system
SERVICE MANUAL
®
Index
2
Technical Specification.
3
Amplifier Test Procedures & Adjustment.
4
OS Upload & Upgrade Instructions, Reset Memory and OS Model Inquiry.
5
Pegasus/Poseidon Test Procedures.
7
RSC Serial Converter, Block Diagram.
8
Input & Controls, Display, Interface, AD/DA Converter and DX Board Schematics.
9
Input & Controls, Display, Interface, AD/DA Converter and DX Board Layouts.
10
Supply and Amplifier Board Schematics.
11
Supply and Amplifier Board Layouts.
12
Spare Part List.
Notice
✔
Service must be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period
will forfeit the right to guarantee.
✔
For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.
✔
To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
All components marked by this symbol have special safety characteristics, when replacing any of these components use only
manufacturer's specified parts.
✔
The (µ) micro symbol of capacitance value is substituted by U.
✔
Ω
The (
) omega symbol of resistance value is substituted by E.
✔
The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified.
✔
All resistors are 1/8W unless otherwise specified.
✔
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
✔
Soldering point.
✔
Male connector.
✔
Female connector.
✔
M/F faston connector.
ATTENTION
✒
GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12
code 270282
¤
Phone +39(0)541/959511 - Fax +39(0)541/957404 - Internet: www.generalmusic.com
Supply voltage.
Logic supply ground.
Test point.
Analog supply ground.
Flag joined with one or more flags
Chassis ground.
with the same signal name inscribed.
Earth ground.
Observe precautions when handling electrostatic sensitive devices.
1 1 1 1 1
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Summarization of Contents
General Notice and Precautions
Safety and Handling Precautions
Outlines important safety measures and handling advice for servicing and operating the equipment.
Technical Specifications
Pegasus 212 Specifications
Detailed technical specifications for the Pegasus 212 loudspeaker system.
Pegasus 118 Specifications
Detailed technical specifications for the Pegasus 118 loudspeaker system.
Poseidon 212 Specifications
Detailed technical specifications for the Poseidon 212 loudspeaker system.
Poseidon 218 Specifications
Detailed technical specifications for the Poseidon 218 loudspeaker system.
Important Repairing Notes
General Precautions for Repair
Essential precautions to follow before and during any repair procedure.
Repair Remarks and Advice
General remarks, module configuration advice, and technical notes for repair.
Visual Inspection Guide
Steps for visually checking the equipment for any potential damage.
Mosfet Replacement Guidance
Notes and procedures for correctly replacing MOSFET components.
OS Upload and Test Procedures
Bias Adjustment Procedure
Procedure for adjusting the bias settings of the amplifier.
Amplifier Check Procedure
Steps for checking the amplifier's functionality and output.
Bandwidth Check Procedure
Procedure to verify the frequency response bandwidth of the amplifier.
General Advice for Repairs
General advice and tips for troubleshooting common issues.
Control Panel Test
Tests to verify the functionality of the amplifier's control panel buttons and LEDs.
EEPROM Test
Test to check the integrity and functionality of the EEPROM memory.
RAM Test
Test to verify the Random Access Memory (RAM) of the unit.
Fan Test
Procedure to test the operation of the cooling fan.
NTC Test
Test to verify the Negative Temperature Coefficient (NTC) thermistor.
RS232 Serial Port Test
Test to confirm the functionality of the RS232 serial communication port.
RS485 In Serial Port Test
Test to verify the RS485 input serial port communication.
RS485 Out Serial Port Test
Test to verify the RS485 output serial port communication.
Functional Test
Overall functional test of the amplifier module after repairs or setup.
Amplifier Module Specific Tests (General)
CH1 Low Amplifier Test
Procedure for testing the low-frequency channel 1 amplifier output.
CH2 High Amplifier Test
Procedure for testing the high-frequency channel 2 amplifier output.
Signal to Noise Ratio Test
Test to measure the signal-to-noise ratio of the amplifier.
Burn-in Test Procedure
Procedure for performing a burn-in test to ensure stability.
Acoustic Test Procedure
Procedure for testing the amplifier's acoustic performance with speakers.
Pegasus 118 Power Amplifier Module Test Procedures
Pegasus 118 Control Panel Test
Control panel tests specific to the Pegasus 118 amplifier module.
Pegasus 118 EEPROM Test
EEPROM test for the Pegasus 118 amplifier module.
Pegasus 118 RAM Test
RAM test for the Pegasus 118 amplifier module.
Pegasus 118 Fan Test
Fan test for the Pegasus 118 amplifier module.
Pegasus 118 NTC Test
NTC test for the Pegasus 118 amplifier module.
Pegasus 118 RS232 Serial Port Test
RS232 serial port test for the Pegasus 118 amplifier module.
Pegasus 118 RS485 In Serial Port Test
RS485 input serial port test for the Pegasus 118 amplifier module.
Pegasus 118 RS485 Out Serial Port Test
RS485 output serial port test for the Pegasus 118 amplifier module.
Pegasus 118 Functional Test
Functional test for the Pegasus 118 amplifier module.
Amplifier Module Specific Tests (Continued)
CH1 Low Amplifier Test (Poseidon)
Procedure for testing the low-frequency channel 1 amplifier output for Poseidon.
CH2 Low Amplifier Test
Procedure for testing the low-frequency channel 2 amplifier output.
Signal to Noise Ratio Test (Continued)
Continued testing of the signal-to-noise ratio for amplifier modules.
Burn-in Test Procedure (Continued)
Continued burn-in testing for amplifier modules.
Acoustic Test Procedure (Continued)
Continued acoustic testing for amplifier modules.
Poseidon 218 Power Amplifier Module Test Procedures
Poseidon 218 Control Panel Test
Control panel tests specific to the Poseidon 218 amplifier module.
Poseidon 218 EEPROM Test
EEPROM test for the Poseidon 218 amplifier module.
Poseidon 218 RAM Test
RAM test for the Poseidon 218 amplifier module.
Poseidon 218 Fan Test
Fan test for the Poseidon 218 amplifier module.
Poseidon 218 NTC Test
NTC test for the Poseidon 218 amplifier module.
Poseidon 218 RS232 Serial Port Test
RS232 serial port test for the Poseidon 218 amplifier module.
Poseidon 218 RS485 In Serial Port Test
RS485 input serial port test for the Poseidon 218 amplifier module.
Poseidon 218 RS485 Out Serial Port Test
RS485 output serial port test for the Poseidon 218 amplifier module.
Poseidon 218 Functional Test
Functional test for the Poseidon 218 amplifier module.
System Block Diagram and Schematics
System Block Diagram
Overall block diagram illustrating the system architecture and component connections.
RSC Serial Converter Schematic
Schematic diagram for the RSC Serial Converter module.
RS232/485 Converter Board Schematic
Schematic diagram for the RS232/485 Converter Board.
Component Board Schematics
DX Board Schematic
Schematic diagram for the DX Board.
AD/DA Converter Board Schematic
Schematic diagram for the AD/DA Converter Board.
Interface Board Schematic
Schematic diagram for the Interface Board.
Input & Controls Board Schematic
Schematic diagram for the Input & Controls Board.
Display Board Schematic
Schematic diagram for the Display Board.
Component Board PCB Layouts
DX Board PCB Layout
Printed circuit board layout for the DX Board.
Display Board PCB Layout
Printed circuit board layout for the Display Board.
Interface Board PCB Layout
Printed circuit board layout for the Interface Board.
AD/DA Converter Board PCB Layout
Printed circuit board layout for the AD/DA Converter Board.
Amplifier and Supply Schematics
Power Amplifier Assembly Schematic
Schematic diagram for the main power amplifier assembly.
Supply Board Schematic
Schematic diagram for the power supply board.
Amplifier Board Schematic
Schematic diagram for the amplifier board.
Amplifier and Supply PCB Layouts
Supply & Amplifier Board PCB Layout
Printed circuit board layout for the supply and amplifier boards.
Dual Amplifier Module PCB Layout
Printed circuit board layout for the dual amplifier module.
Spare Part List
Accessories
List of general accessories available for the systems.
Optional Accessories
List of optional accessories for enhanced functionality.
Pegasus 118 Spare Parts
Specific spare parts listing for the Pegasus 118 model.
Poseidon 212 FLY Spare Parts
Specific spare parts listing for the Poseidon 212 FLY model.
Pegasus 212 Spare Parts
Specific spare parts listing for the Pegasus 212 model.
Poseidon 218 Spare Parts
Specific spare parts listing for the Poseidon 218 model.
Amplifier Module Spare Parts
Spare parts specific to the amplifier modules across models.
Spare Part Description Notes
Notes and explanations regarding spare part descriptions and codes.
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