Table Of Contents - JBL A6000GTi Service Manual

137159-1 Rev. 1
1. INTRODUCTION ..................................................................................................... 1-1
1.1. T A6000GT
HE
1.2. S ............................................................................................................... 1-1
COPE
1.3. W
ARRANTY
2. SPECIFICATIONS ................................................................................................... 2-1
2.1. O P
UTPUT OWER
2.2. P
ERFORMANCE
2.3. C
ONTROLS
2.4. I
NDICATORS
2.5. I /O
NPUT UTPUT
2.6. P
ROTECTION
3. THEORY OF OPERATIONS ................................................................................... 3-1
3.1. A S
UDIO IGNAL
3.1.1. Input Stage ................................................................................................ 3-1
3.1.2. Error Amplifier ............................................................................................ 3-2
3.1.3. Modulator .................................................................................................. 3-2
3.1.4. Triangle Generator..................................................................................... 3-2
3.1.5. Output ........................................................................................................ 3-3
3.1.6. Output Filter ............................................................................................... 3-4
3.2. P
ROTECTION AND
3.2.1. Current Monitor .......................................................................................... 3-5
3.2.2. Current Limiter ........................................................................................... 3-5
3.2.3. Display Circuitry ......................................................................................... 3-5
3.2.4. Thermal Limit Control (TLC) ...................................................................... 3-6
3.3. P S
OWER UPPLY
3.3.1. Switching Power Supply Operation ............................................................ 3-7
3.3.2. Switching Power Supply Protection Circuit ................................................ 3-7
3.3.3. (LVPS) Low Voltage Power Supply Operation ........................................... 3-7
4. MAINTENANCE ...................................................................................................... 4-1
4.1. W B
HERE TO
4.2. S M
URFACE
4.3. D
ISASSEMBLY FOR
4.3.1. Top Cover Removal ................................................................................... 4-2
4.3.2. Power Supply Discharge............................................................................ 4-4
4.3.3. Power Connection Housing Removal ........................................................ 4-5
4.3.4. Pip Assembly Removal .............................................................................. 4-6
4.3.5. Power Supply Assembly Removal ............................................................. 4-7
4.3.6. BCA Assembly Removal ............................................................................ 4-7
4.3.7 BCA Disassembly ...................................................................................... 4-8
4.4. T
ROUBLESHOOTING
4.4.1. Power Supply ............................................................................................ 4-9
4.4.2. Audio Section Trouble Shooting............................................................... 4-10
2003 Crown Audio, Inc.

Table of Contents

C A ........................................................................... 1-1
I AR MPLIFIER
......................................................................................................... 1-1
................................................................................................. 2-1
................................................................................................... 2-1
& C ................................................................................. 2-2
ONNECTORS
........................................................................................................ 2-2
.................................................................................................... 2-2
...................................................................................................... 2-3
P ............................................................................................ 3-1
ATH
C C
ONTROL IRCUITRY
.................................................................................................. 3-7
................................................................................................ 4-1
EGIN
T ........................................................................... 4-1
OUNT ECHNOLOGY
I & S
NSPECTION
............................................................................................. 4-9
................................................................ 3-5
............................................................ 4-2
ERVICE
A6000GTi Service Manual
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