JBL EON Power10 User Manual

Introduction and General Information
11
This manual has been prepared to assist technicians with the repair and maintenance of
the JBL EON line of portable performance systems. The procedures described in this man-
ual require advanced technical experience and equipment to perform.
WARNING
There are no user-serviceable parts inside these products
. Opening these
products or attempting to service may expose the user to electrical shock.
Refer servicing to qualified personnel.
Substitutions
Although many of the electronic components used in these products may be available from
electronic suppliers, some components are JBL replacements only. A product repaired with-
out JBL specified components may not meet the factory specifications. The product war-
ranty may be voided by a repair using unapproved JBL components.
Test Equipment
1) Audio Precision System One, or
Distortion Analyzer
Function Generator
2) 20MHz Oscilloscope
3) Desoldering Equipment
4) Digital Multimeter
5) High Power Load Bank
6) Variac
The complexity of the product under repair requires professional audio service equipment.
Do not attempt to repair this product without this equipment.
Factory Repair
In the U.S. and Canada: In the event that an EON product must be returned to the factory
for service, contact JBL Professional Service at (818) 895-3479 for return instructions. Do
not return any merchandise without prior authorization.
Outside the U.S.: Contact the JBL Professional Distributor in your area for service
information.

JBL EON Power10 Specifications

General

Brand	JBL
Model	EON Power10
Category	Music Equipment
Language	English

Summary

Transducer Repair

Cone Replacement Procedure

Details the process and necessary tools for replacing a speaker cone.

Recone Procedure

Step-by-step guide for reconing a speaker, including inspection and assembly.

Rediaphragm Instructions 2418H

Procedure

Step-by-step instructions for performing the 2418H rediaphragm replacement.

Signal Input Assembly Trouble-shooting EON Power15 and EON15P-1/230

Gain and Response Tests

Amp Assembly Trouble-shooting EON Power15 and EON15P-1/230

Low and High Frequency Chain Confirmation

Confirms signal levels and performance in low and high-frequency audio chains.

Power Tests and Supply Verification

Low Frequency Power Amp Test

Evaluates the performance and power output of the low-frequency power amplifier.

Voltage Amp Test

Low Frequency Filter Test

Bias Set Procedure

Details the steps for correctly setting the amplifier bias.

High Frequency Power Amp Test

Evaluates the performance and power output of the high-frequency power amplifier.

High Frequency Filter Test

Signal Input Assembly Trouble-shooting EON PowerSub

Amp Assembly Trouble-shooting EON PowerSub

Chain Confirmation and Power Tests

Amplifier Muting Test

Bias Reference Test

Tests the bias reference circuit that sets quiescent current for output transistors.

Signal Input Assembly Trouble-shooting EON Power10

Amp Assembly Trouble-shooting EON Power10

Setup, Loop, and Chain Tests

High Frequency Chain and Power Tests

Supply Test

Amplifier Muting and Power Amp Tests

Tests muting circuits and evaluates power amplifier performance.

Input Assembly Trouble-shooting EON 15PAK

Setup, Power, and Gain Tests