JBL TLX271P User manual

TLX271P
POWERED LOUDSPEAKER
SERVICE MANUAL
JBL Incorporated
250 Crossways Park Dr.
Woodbury, New York 797 REV 0 5/00

TLX271P
2
TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SPEAKER CONNECTIONS/OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SERVICE BULLETIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
COMPONENTS, AURAL SPECS, WIRING, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
PASSIVE SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
POWER TRANSFORMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
REVISION STATUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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Specifications

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Speaker Connections/Operation

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Speaker Connections/Operation (Cont.)

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Speaker Connections/Operation (Cont.)

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Trouble Shootin

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9
Components, Aural Specs, Wirin ,
Passive Schematic Dia rams

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Exploded View

TLX271P
Circuit Board
LINE1
LINE2
AC AC +
-
BR1
CT
+
JW4
C1 C28
+Q1
JW1
R41
R79
R65
R5
Q12
R59
JW7
R67
Q18
E
C
B
TH1
JW6
Q9
E
C
B
JW13
R63
Q11
R55
Q6 Q5
NC MC
C
K1
1
2
L1
Q4
R36
C19
+C43 +
LED
+-
C36
JW5
JW11 JW9
+
+
OFF ON
C
C23
AUTO SW1
C4
JW12
JW2
GND
AC-3 NORMAL
RCA1
C11
POT1
C24+
+C9
C15
JW5
MAIN PCB
CL1280
DV1
REV A
HLS
C31
SPEAKER IN
++C32
_
C27
C29
C7
C5
JW3
+
+SW2
LINE IN
SPKR IN
C2
+
TF1
Q7
JW10
CXT
C18
C12
CX2
C42
C8 R48
R49
Z2 R19 Z1
R16
C39 C38 J18
R12
R11
C16 Q6
IC3
C22
R32
R38
J8 R38
J7 R31 IC3
R14
R17
C17
R53
Q2
D4 C16
J11
R56
J4 R28
R33 R23
C37
D1
D2
R27
R5
Q2
J1 J16
R42
J5
R45 C34
R44
R59
J17
J13
R55
R38
IC4 J3
R1
R56
R56
J2
K4
J19
C2
Q12 R51
D14
J8
R15
Q7
J19
D16
IC8
IC2
R24
J8
C21
D17
R7
C18
R23
R8
C25
R12
C7
J12
IC1
R3
R8
C46
C41
00029
Q3
D6
J14
R18

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Electrical Parts List
Part# Description Ref Desi nator Quantity

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Electrical Parts List (Cont.)
Part# Description Ref Desi nator Quantity

TLX271P
4
Electrical Parts List (Cont.)
Part# Description Ref Desi nator Quantity

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5
Power Transformer
TERMINAL FASTON (3X)
AMP 2-520263-2 (3X)
0.187" X 0.020"
OR EQUIVALENT
(MATES WITH FASTON
TERMINAL 0.250" X 0.032")
WIRE LENGTH
(INCLUDES TERMINAL)
RED COLOR (2X)
RED COLOR WITH
YELLOW STRIPE AROUND
3.570
R0.188
(2X)
3.080
1.330
2.650
2.600
11.00
00016
INPUT
OUTPUT
115 V @ 60 HZ
NO LOAD
NOMINAL 33.3 V CT (SEC 1) 33.3 V CT (SEC 2)
WITH LOAD 30.12 V CT @ 2.0 Amps. (SEC 1)
30.12 V CT @ 2.0 Amps. (SEC 2)
PRI 5.06 Ohms MAX
SEC1 1.0 Ohms MAX
SEC2 1.0 Ohms MAX
115V CENTER TAP TO
BE RED WIRE WITH
YELLOW STRIPE
3
5
RED
RED
34V @ 2A
34V @ 2A
00017

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Schematic

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Revision Status