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JBL
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A6000GTi
JBL A6000GTi Service Manual
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A
60
00GTi
Car Audio
Power Amplifier
Ser
v
ice Manual
2003 by Crown Audio, Inc., P.O. Box 1000, Elkhart, Indiana 46515
-1000
U.S.A. Telephone: 574
-
294
-
8000. Trademark Notice:
Crown
is a
registered tradem
ark of
Crown International, Inc; JBL
is a registered
trademark of JBL. Other tradem
arks are t
he property of their respective
owners.
137159
-1
11/03
Rev. 1
2
Table of Contents
Table of Contents
5
Introduction
7
The A6000Gti Car Amplifier
7
Scope
7
Warranty
7
Specifications
9
Output Power
9
Performance
9
Controls & Connectors
10
Indicators
10
Input/Output
10
Protection
11
Theory of Operations
12
Audio Signal Path
12
Input Stage
12
Error Amplifier
13
Modulator
13
Triangle Generator
13
Output
14
Output Filter
15
Protection and Control Circuitry
16
Current Monitor
16
Current Limiter
16
Display Circuitry
16
Thermal Limit Control (TLC)
17
Power Supply
18
Switching Power Supply Operation
18
Switching Power Supply Protection Circuit
18
LVPS) Low Voltage Power Supply Operation
18
Maintenance
20
Where to Begin
20
Surface Mount Technology
20
Disassembly for Inspection & Service
21
Top Cover Removal
21
Power Supply Discharge
23
Power Connection Housing Removal
24
Pip Assembly Removal
25
Power Supply Assembly Removal
26
BCA Assembly Removal
26
BCA Disassembly
27
Troubleshooting
28
Power Supply
28
Audio Section Trouble Shooting
29
Fault Modes
29
Required Test Equipment
31
Electrical Checkout Procedure
31
Quiescent Current Draw
32
Sensitivity
32
Bridge Mono Operation
32
Frequency Response
32
Short Circuit Test
32
Output Power
32
Calibrations
33
Amplifier Power up
33
DC Offset Adjustment
33
Overlap Correction
33
Current Monitor Adjustment
33
Terms
34
Shipment
34
Mechanical Parts
34
Circuit Board Parts
35
Circuit Board and Schematic Part Numbers
35
Schematics
37
Other manuals for JBL A6000GTi
Owner's Manual
12 pages
Release Notes
3 pages
4
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JBL A6000GTi Specifications
General
Brand
JBL
Model
A6000GTi
Category
Car Amplifier
Language
English
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