Read JBL PSW-D115 Service Manual online
JBL Consumer Products Inc.
250 Crossways Park Drive
Woodbury, N.Y. 11797
1-800-336-4JBL in the USA
A Harman International Company
Rev C 11/2000
PSW-D115
Powered Subwoofer
SERVICE MANUAL
SAFETY INFORMATION
Warning
Any person performing service of this unit will be exposed to
hazardous voltages and the risk of electric shock. It is
assumed that any person who removes the amplifier from
this cabinet has been properly trained in protecting against
avoidable injury and shock. Therefore, any service
procedures are to be performed by qualified service
personnel ONLY!
Caution
Before the amplifier is plugged in, be sure its rated voltage
corresponds to the voltage of the AC power source to be
used. Incorrect voltage could cause damage to the
amplifier when the AC power cord is plugged in. Do not
exceed rated voltage by more than 10%: operation below
90% of rated voltage will cause poor performance or may
shut the unit off.
Leakage/Resistance Check
Before returning the unit to the customer, perform a leakage
or resistance test as follows:
Leakage Current. Connect the unit to its rated power
source. Using an ammeter, measure the current between
the neutral side of the AC supply and chassis ground of the
unit under test. if leakage current exceeds 0.5mA, the unit
is defective. Reverse the polarity of the AC supply and
repeat.
Resistance. Measure the resistance from either side of the
line cord to chassis ground. If it is less than 500k ohms, the
unit is defective.
WARNING! DO NOT return the unit to the customer if it fails
one of these tests until the problem is located and corrected.
Critical Components
All components identified with the IEC symbol
in the parts list and the schematic diagram
designate components in which safety can be
of special significance when replacing a
component identified with
. Use only the
replacement parts designated in the parts list or parts with
the same rating of resistance, wattage or voltage.
List of Safety Components Requiring
Exact Replacements
(
all parts POWER AMP PCB except TR2
)
F1
Fuse SLO BLO 3.0A 250V T type.
UL approved
PWRCORD SPT-2 or better with polarized plug, UL
approved wired with the hot side to fused
side. Use with factory replacement panel
strain relief only.
TRX1
Transformer. Use only factory replacement.
C1, 2
2200uF, 100V electrolytic filter caps. Be sure
replacement part is at least the same
working voltage and capacitance rating.
Also the lead spacing is important.
Incorrect spacing may cause premature
failure due to internal cabinet pressure and
vibration.
C5
100nF 50 20 mono-ceramic axial
C6
4.7uf 100V 80/-20% Electrolytic radial NP
TR2
MPS A13 30V NPN(Darl)
DBR
Bridge Rect 200V 4A
R1
10M
W
0.25W 5% carbon film
R4a/b/c
0.1
W
0.5W 5% metal film
R9
3.9k
W
5W 5% ceramic wirewound
R15
100k
W
0.5W 5% carbon film
R16, 17
2.4k
W
5W 5% ceramic wirewound
R33, 50
332
W
0.5W 5% carbon film
R52, 57
2.7k
W
5W 5% ceramic wirewound
R61
5.1k
W
2W 5% carbon film
S64AMI
Power output module. Use only factory
replacement
Faceplate
Faceplate. Use only factory replacement
CMC1
Use only factory replacement
L1
Use only factory replacement
Fuse PCB
Use only factory replacement
Main PCB
Use only factory replacement
2
Amplifier/Subwoofer
PSW-D115
3
Amplifier/Subwoofer
PSW-D115
TABLE OF CONTENTS
SAFETY INFORMATION ...............................................2
TABLE OF CONTENTS.................................................3
GENERAL SPECIFICATIONS .......................................3
PSW-D115 DETAILED SPECIFICATIONS ...................4
PSW-D115 CONTROLS AND THEIR FUNCTION .......6
OPERATION...................................................................7
SPEAKER CONNECTIONS...........................................8
TROUBLESHOOTING .................................................10
SERVICE BULLETIN JBL9903 - APRIL 1999...........11
PSW-D115 TEST SET UP AND PROCEDURE .........12
PSW-D115 POWER AMP MODULE
TESTING FLOW CHART.............................................13
CABINET EXPLODED VIEWS ....................................14
AMPLIFIER EXPLODED VIEW ...................................15
PSW-D115 MECHANICAL PARTS LIST ....................16
PACKING EXPLODED VIEWS....................................17
PSW-D115 Version 3.21 PCB (Component Side) ......18
PSW-D115 Version 3.21 PCB (Solder Side) ..............19
PSW-D115 ELECTRICAL PARTS LIST......................20
PSW-D115 INTEGRATED CIRCUITS.........................22
PSW-D115 SCHEMATIC 1 of 3 ..................................23
PSW-D115 SCHEMATIC 2 of 3 ..................................24
PSW-D115 SCHEMATIC 3 of 3 ..................................25
GENERAL SPECIFICATIONS
Amplifier Power (RMS). . . . . . . . 350 watts
Driver 15" . . . . . . . . . . . . . High-Polymer Laminate
Inputs . . . . . . . . . . . . . . . Line Level and Speaker Level
Outputs . . . . . . . . . . . . . . Line Level and Speaker Level
Low-Pass Frequency . . . . . . . . Continuously variable from 60Hz – 180Hz
High-Pass Frequency . . . . . . . . Continuously variable from 60Hz – 180Hz
Driver 15" . . . . . . . . . . . . . High-Polymer Laminate
Inputs . . . . . . . . . . . . . . . Line Level and Speaker Level
Outputs . . . . . . . . . . . . . . Line Level and Speaker Level
Low-Pass Frequency . . . . . . . . Continuously variable from 60Hz – 180Hz
High-Pass Frequency . . . . . . . . Continuously variable from 60Hz – 180Hz
when using line-level inputs
150Hz when using speaker-level inputs
Frequency Response . . . . . . . . 25Hz – low-pass crossover setting
Dimensions (H x W x D) . . . . . . . 20 x 20 x 21-3/4"
(508 x 508 x 552mm)
Weight . . . . . . . . . . . . . . . 53 lbs/24.1 kg
NOTE: CERTAIN DRAWINGS AND CONNECTIONS WERE DEPICTED INCORRECTLY IN SOME EARLY COPIES
OF THE PSW-D112/115 OWNER'S MANUALS.
THEY INCLUDE:
1. DRAWING OF RCA LINE LEVEL INPUT/OUTPUT JACKS ON PAGES 3, 4, & 5; ALL CHANNELS - RIGHT SIDE
SHOULD BE “LINE OUT”, LEFT SIDE SHOULD BE “LINE IN”.
2. CONNECTION ON PAGE 4 OF OWNER'S MANUAL - SINGLE CABLE DIRECT INPUT (FOR DOLBY DIGITAL OR
DTS SURROUND); SINGLE CABLE FROM YOUR RECEIVER/PROCESSOR SHOULD CONNECT TO THE “CENTER
CHANNEL LINE IN” JACK ON YOUR SUBWOOFER.
THOSE DRAWINGS ARE CORRECT IN THIS DOCUMENT, SEE PAGES 8 & 9.
LINE VOLTAGE
Yes/No Hi/Lo
Line
Nom.
Test
Limits
Unit
Notes
US 120vac/60Hz
Yes
108-132
108-13
2
120
Vrms
Normal Operation
Parameter
Specifi-
cation
Unit
Nom.
Test
Limits
Conditions
Notes
Amp Section
Type (Class AB, D,
Type (Class AB, D,
other)
D
D
n/a
Class D
Preferred...Sink
required for Class AB
Load Impedance
(speaker)
8
Ohms
8
n/a
Nominal
Z-curve required
Rated Output Power
350
Watts
202
190
1 input driven
RFQ Spec.
THD@ Rated Power
0.3
%
194
1
22k filter
200W (Power
Bandwidth 30-100Hz)
@ 120 VAC
THD @ 1 Watt
0.5
%
0.066
0.8
22k filter
DC Offset
<20
mV-DC
0.5
10mV
@ Speaker Outputs
Damping factor
>80
DF
80
>50
Measured across
amplifier outputs
Input Sensitivity
Input Frequency
35
Hz
Nominal Freq.
1 input driven
Line Input
200
mVrms
200
±2dB
To Rated Power/ Vol
@ Max
1 input driven: AP
source Z = 600 ohms
Speaker/Hi Level Input 7
Vrms
6.963
±2dB
To Rated Power/ Vol
@ Max
1 input driven: AP
source Z = 25 ohms
Signal to Noise
SNR-A-Weighted
SNR-A-Weighted
100
dBA
102
90
Relative to rated
output
A-Weighting filter
SNR-unweighted
75
dBr
85
70
Relative to rated
output
22k filter
SNR rel.
1W-unweighted (22k)
65
dBr
67
55
relative to 1W Output
22k filter
Residual Noise Floor
1.5
mVrms
<1
1.5
Volume @max, using Audio Precision) , BW
=22KHz
Residual Noise Floor
1.5
mVrms(ma
x)
1
2
Volume @max, w/ A/P Swept Bandpass
Measurement (Line freq.+ harmonics) ,
BW<20Khz
Input Impedance
Line Input
10K
ohms
46.8K
n/a
Nominal
Speaker/Hi Level Input 5K
ohms
24.0K
n/a
Nominal
Filters
0dBr = 1w @ 50Hz
Low Pass (fixed or
variable)
Variable
Low Pass filter (point
or range)
60-180
Hz
±2dB
-3dB Point
Slope
24
dB/Octav
e
n/a
Q
1
Damping
n/a
Subsonic filter (HPF)
25
Hz
±2dB
-3dB Point
Slope
12
dB/Octav
e
n/a
Q
1
Damping
n/a
AV Boost
YES
—
4
Amplifier/Subwoofer
PSW-D115
PSW-D115 DETAILED SPECIFICATIONS
