ARC SUB10/DS-10

ARC SUB10/DS-10
ARC SUB10/DS-10
Powered Subwoofer
SERVICE MANUAL
JBL Consumer Products Inc.
250 Crossways Park Drive
Woodbury, N.Y. 11797
1-800-336-4JBL in the USA
A Harman International Company
Rev A 10/2000
Amplifier/Subwoofer
ARC SUB10/DS-10
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!
List of Safety Components Requiring
Exact Replacements
F1
Fuse SLO BLO 0.63A 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.
Caution
TRX
Transformer. Use only factory replacement.
This unit does not have a power switch. Hazardous
voltages are present within the unit whenever it is
plugged in.
DBR
Bridge diode. Use only factory replacement.
C1, 2
3300uF, 50V 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.
C6
10uF 50V ±20% Elect. Radial NP Safety Part
See Page 15 Service Bulletin
R29
470W 0.25W ±5% METAL OXIDE Safety Part
S53AMI
Power Amp module. Use only factory
replacement
CMC1
mc4438 Safety Part
L1
mc4436 Safety Part
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. Note there is no power switch on this unit.
When the power plug is plugged in, the unit is live. 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.
2
Amplifier/Subwoofer
ARC SUB10/DS-10
TABLE OF CONTENTS
SAFETY INFORMATION ...............................................2
SERVICE BULLETIN JBL9903 - APRIL 1999 ............14
TABLE OF CONTENTS.................................................3
SERVICE BULLETIN JBL2000-01
JANUARY 2000............................................................15
GENERAL SPECIFICATIONS .......................................3
DETAILED SPECIFICATIONS.......................................4
ARC SUB10/DS-10 CONTROLS AND
THEIR FUNCTION .........................................................6
CAUTIONS AND WARNINGS .......................................7
ARC SUB10/DS-10 BLOCK DIAGRAM ........................9
SPEAKER CONNECTIONS.........................................10
TROUBLESHOOTING .................................................11
ARC SUB10 / DS-10 TEST SET UP AND
PROCEDURE...............................................................12
ARC SUB10 / DS-10 POWER AMP
MODULE TESTING FLOW CHART ............................13
TROUBLESHOOTING TIPS AND SOLUTIONS
TO COMMON SERVICE PROBLEMS ........................16
CABINET EXPLODED VIEWS ....................................17
AMPLIFIER EXPLODED VIEW ...................................18
ARC SUB10/DS-10 PACKING EXPLODED VIEWS...19
ARC SUB10 Version 5 PCB........................................20
ARC SUB10/DS-10 Version 5.1 PCB..........................21
ARC SUB10/DS-10 ELECTRICAL PARTS LIST ........22
ARC SUB10/DS-10 INTEGRATED CIRCUITS &
TRANSISTORS ............................................................23
ARC SUB10/DS-10 SCHEMATIC................................24
GENERAL SPECIFICATIONS
Amplifier Power (RMS) . . . . . . . . 100 watts
Driver 10" . . . . . . . . . . . . . . High-Polymer Laminate
Inputs . . . . . . . . . . . . . . . . Line Level and Speaker Level
Outputs . . . . . . . . . . . . . . . Speaker Level (only active if Speaker Level Inputs are used)
High-Pass Frequency . . . . . . . . . High-Pass filter at 180Hz (only active if Speaker Level Inputs are used)
Frequency Response . . . . . . . . . 50Hz - 150Hz
(determined by crossover setting)
ARC SUB10
DS-10
Dimensions (H x W x D) . . . . . . . . 11-1/2 x 17-1/8 x 16-1/2"
(292 X 435 X 419mm)
14-1/4 x 14-1/4 x 16"
(362 x 362 x 406mm)
Weight . . . . . . . . . . . . . . . . 27 lbs/12.3 kg
27 lbs/12.3kg
3
Amplifier/Subwoofer
ARC SUB10/DS-10
DETAILED SPECIFICATIONS
Nom.
Unit
US 120vac/60Hz
LINE VOLTAGE
Yes
108-132
120
Vrms
Normal Operation
EU 230vac/50-60Hz
Yes
207-264
230
Vrms
Normal operation, MOMS required
QA Test
Limits
Conditions
Parameter
Yes/No
Hi/Lo Line
Specificatio
n
Unit
Notes
Notes
Amp Section
Type (Class AB, D,
other)
D
Load
Impedance
(speaker)
4
Rated Output Power
100
THD @ Rated (RMS)
Power
0.3
THD @ 1 Watt
0.1
10
DC Offset
Damping factor
50
n/a
Ohms
n/a
n/a
Watts
Class D Preferred...Sink required for Class
AB
Nominal
1 input driven
Z-curve required
Peak power
1
22k filter
%
0.5
22k filter
mV-DC
20
@ Speaker Outputs
40
Measured at amplifier board
50
Nominal Freq.
± 2dB
To Rated power/Vol @ Max
Single input driven Un-Balanced GND
Zo=600
± 2dB
To Rated power/Vol @ Max
Single input driven Un-Balanced GND
Zo=600
%
DF
50 Watts
Measure at amp board THD < 0.1% 50 Watts
@ 50Hz
Input Sensitivity
Input Frequency
Line input
Speaker/Hi Level Input
40
100
2.6
Hz
mVrms
Vrms
Signal to Noise
SNR-A-Weighted
100
dBA
70
relative to rated power
A-Weighting filter
SNR-unweighted
80
dBr
70
relative to rated power
22k filter
SNR rel. 1W-unweighted
65
dBr
55
relative to 1W Output
22k filter
1
mVrms
Residual Noise Floor
Residual Noise Floor
1.5
mVrms(max)
2
Volume @max, using DVM or A/P (BW=20 KHz)
2
Volume @max, w/ A/P Swept Bandpass
Measurement (Line freq.+ harmonics)
(BW=20 Khz)
Input Impedance
Line Input
10K
ohms
n/a
Nominal
Zin Minimum, (test frequency 1 Khz)
Speaker/Hi Level Input
4.7K
ohms
n/a
Nominal
Zin Minimum, (test frequency 1 Khz)
± 10
-3db Point
Filters
Speaker in LP 2nd order
variable
50-150
Subsonic filter (HPF)
2nd order
25
Hz
Hz
Speaker out HP filter
Left & Rigth
200
Hz
± 10
Speaker input - Spkr out 4 Ohms
Left & Rigth
100
Hz
± 10
Speaker input - Spkr out 8 Ohms
4
Amplifier/Subwoofer
ARC SUB10/DS-10
Limiter
THD at Max. Output
n/a
Power
Features
Volume pot Taper
(lin/log)
n/a
functional
—
functional
Maximum Output Power
Maximum THD as a result of limiting.
—
LOG
HP Speaker out
functional
Refer to filter section
Input Configuration
Line In & LFE
YES
—
functional
LR dual RCA jack
Spkr/Hi Level In
YES
—
functional
Spring type connector
Signal Sensing (ATO)
Auto-Turn-On
YES
functional
Auto - on selection switch in Auto
ATO Input test frequency
40
Hz
functional
“
ATO Line level in
5
mV
functional
"
ATO Level Speaker in
50
mV
functional
"
ms
functional
ATO Turn-on time
5
Auto Mute/ Turn-OFF
Time
15
Power on Delay time
0.1
minutes
17
sec.
5
Bicolor LED (Green=signal/ red= No signal)
Amp connected and AC on, then input signal
applied
T before muting, after signal is removed Auto turn of time (T) must be 3 > T < 15
Minutes
AC Power Applied
Transients/Pops
ATO Transient
5
mV-peak
50
Turn-on Transient
2
Vpk-pk
2
@ Speaker Outputs
AC Line cycled from OFF to ON
Turn-off Transient
2
Vpk-pk
2
@ Speaker Outputs
AC Line cycled from ON to OFF
65
%
64
Efficiency
Efficiency
Stand-by Input Power
Power Cons. @ rated
power
15
76
Watts
Watts
Nominal Line voltage 120 VAC / 230 VAC
18
@ nom. line voltage
80
@ nom. line voltage
Auto turn of time (T) must be 3 > T < 15
Minutes
75 Watts @ 4 Ohms nominal line voltage
Protection
Short Circuit Protection
YES
functional
YES
Thermal Protection
functional
Direct short at output
Amplifier should resume operation after short
circuit condition removal
@1/8 max unclipped Power IEC Noise Temperature rise in accessible metal parts
should not exceed 35K rise for 120v version
using driver load
or 30K rise for European versions (refer to
requirements sheet).
Line Fuse Rating
US (120v) version
Amps
0.6
Type-T or Slo Blo-250 V
Internal fuse
EU
Amps
TBD
Type-T or Slo Blo-250 V
External fuse with UL/SEMKO rated holder
5
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 CONTROLS AND THEIR FUNCTION
1. Volume Control - adjusts the level of volume of the
subwoofer relative to the rest of the system.
2. Power LED - This light will be RED when the unit is
plugged in and not receiving a signal; when the unit
receives a signal, the light will cycle to GREEN. If no
signal is received after 5 minutes the light will cycle
back to RED (standby) until a signal is present again.
3. Crossover Frequency - This controls the highest
frequency the subwoofer will reproduce. It allows a
seamless transition from the subwoofer to the
satellite speakers. When the control is at the “50”
position, very few high frequencies will be heard.
This position is best suited to large main speakers.
For most applications, the control should be set
somewhere near the mid position. For listeners using
very small speakers, best results will be obtained
with the control at the “150” position.
4. Low Level Input Jacks - These left and right Line
Level Inputs are normally used when the receiver/
processor has line-level “pre-amp out ” or “subwoofer
out” jacks.
5. High Level Inputs - These High Level Inputs are for
receivers that do not have line-level “pre-amp out”
or “subwoofer out” jacks. When a pair of main or
satellite speakers are attached to the OUTPUT
terminals, frequencies below 180 Hz are attenuated
by the high-pass filter.
Note: DS-10 controls
are shown here
1
Volume
Min
Max
2
Power
3
Crossover
Frequency
50
Low
Level
In
L
150
R
R
4
5
L
SPKR
IN
SPKR
OUT
6
Amplifier/Subwoofer
ARC SUB10/DS-10
CAUTIONS AND WARNINGS
BEFORE THIS AMPLIFIER IS PLUGGED IN, make sure its rated voltage corresponds to the voltage of the AC power
source to be employed. Failure to use the correct voltage could cause damage to the amplifier when the AC power
cable is plugged in. Do not exceed the rated voltage by more than 10%; operation below 90% will degrade
performance or cause the unit to shut off.
1. TROUBLE SHOOTING BEFORE OPENING
Check connections, control settings, driver and other possible
external problems. If there is Output, determine if all controls
and Inputs function properly. Rotate Pots over full range while
applying lateral and vertical oscillating forces to locate possible
intermittent function. High Level Inputs should be tested
individually both differentially (signal from "-" to "+" with normal
output) and in common mode (signal from low level ground to
both "+" and "-" shorted together, giving virtually no output).
While passing a signal, corner drop the enclosure a few inches
to expose possible intermittent problems. Check woofer for
rubbing of voice coil or tears in cone or surround. Check
cabinet for loose extraneous articles which may have been
pushed into port.
Verify AC plug is disconnected. See WARNINGS in section
2.
To prevent loose hardware from reducing safety spacings, it
is essential that all hardware be replaced in the same
manner as it was removed, with lock washers under all nuts,
proper torque on screws and thread locking sealer on the
transformer nuts.
If line core or strain relief are replaced, it is necessary to
seal them completely to panel with an approved conformal
coating to prevent air "whistling" through any openings from
woofer pressure.
2. REMOVING THE AMPLIFIER.
There are voltages and hot components at many points in
the amplifier which can, if contacted, cause personal injury.
Be extremely careful. Any adjustments or service
procedures that require operation of the amplifier out of its
enclosure should be performed only by trained service
personnel. Refer to PCB drawings for locations of hazards
and familiarize yourself with their locations before starting.
A. Remove the subwoofer grille.
B. Remove the (4) 1” Black PPH screws attaching the
woofer to the cabinet.
C. Remove the woofer, unplug the two connecting wires.
D. Remove the (8) ¾” screws black pph screws
attaching the ampifier assembly to the cabinet.
E. Remove the ampifier assembly.
F. For access to the input panel, first remove the three
outer screws. Remove knob and nuts from
potentiometers. Cut away the sealant securing the
cover to the faceplate. The input PCB should now
pull out completely.
3. TROUBLE SHOOTING AFTER REMOVAL
To reduce the risk or electric shock and/or fire,
replace items as marked on schematic with the
safety marking only with the exact replacements
listed in the safety component list, page 2. If
exact replacements are not available, order them from the
factory or an authorized service center.
A. Check fuse F1. If blown visually check transformer for
discoloration, and large capacitors (C1, C2) for bulges
or venting. Check for shorts with an Ohmmeter,
(see schematic).
B. With ohmmeter, verify voice coil of woofer is 3.9
ohms, and windings of transformer are continuous.
C. Examine board and wiring for obvious damage,
broken or poorly soldered connections, or
discoloration.
D. Repair or replace items identified above.
E. For live power testing, attach a 4 ohm 100 watt
resistor to the output wires.
F. If the LED is not on, check for fuse continuity and
then for cold solder joints on CMC1 and bridge diode.
G. With a signal present at the input, the output to the
power amp is at pin #8 of U1. If the signal is not
present at pin 8, there is a problem with preamp
section. Most likely, a cold solder joint will be the
7
Amplifier/Subwoofer
problem. Track back the signal path to locate
problem.
H. If signal present at pin 8, but still no sound, check
for cold solder joints on all power resistors, R4a and
R4b and the the power amp module. If C24 is
blown, C6 is not soldered or is defective. Check the
signal at R2. On the down signal side, the voltage
signal should be very small. If signal is similar on
both sides of R2, the amp module is likely defective.
I. If you hear a mechanical clicking noise from the amp
module, this indicates that the short circuit protection
has been engaged. Check that Q3, Q4 and Q5 are
soldered correctly. Also check that Q3 is not shorted
to power amp case.
J. If you have to replace the power module, be very,
very patient with the solder removal from this single
sided PCB. COMPLETELY REMOVE SOLDER
BEFORE TRYING TO REMOVE THE MODULE!
(See page 23)
K. Assembly notes. Top side soldering as below:
ARC SUB10/DS-10
RCA jack (chassis) to the line neutral of AC
cord. Resistance should be >100MW .
B) Hi-Pot Test
If a UL approved Hi-Pot tester is available, test
line & neutral of AC cord to outer shell of RCA
jack (chassis) at 1100VAC for 2 seconds.
Observe all of instrument manufacturer's
instructions and safety warnings in performing
this test.
Connect subwoofer system to a music source. Play at high
level while checking for air leaks around panel edge, driver,
panel jacks and controls, and voice coil problems such as
rubbing or loose turns. With the crossover "frequency" set
to 50Hz, very little of the voice content should be heard.
4. REASSEMBLY
Follow all disassembly instructions in reverse order. If the
input plate has been removed, it must be re-sealed with a
small bead of silicon seal or air leaks may result.
J5: solder both ends
J3: solder both ends
J1: solder both ends
R48: solder GND end
At junction of C7a/C7b: Pin to GND
Crossover pot Gnd wire from PDB pad to POT
barrel. (Only physical contact required between
pot body and faceplate).
After repair, inspect for possible safety hazards, including
loose hardware, missing lock washers, correct fuse and
lead dress of primary wires (these must be held in position
with cable ties so that they cannot touch secondary
components). With ohmmeter, check that panel is
connected to signal ground.
It is essential that the following safety insulation test be
performed prior to returning the Power SubWoofer to the
customer, using one of the following methods.
A) Insulation Resistance Test
With a 500VDC Insulation Tester, Check
insulation from the outer metal contact of the
8
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 BLOCK DIAGRAM
A
C
B
D
E
1
1
L
R
Low Level In
SPKR
In
2
L
SPKR
Out
R
High Level
Input
Low Level
Input
3
2
Summing
Circuit
Volume
Control
3
Equalization
4
4
Waveform
Recovery and
Fixed Low Pass
5
5
Crossover
Control
6
Power
Amplifier
Short Circuit
Protection
6
Woofer
7
7
A
B
C
D
E
9
Amplifier/Subwoofer
ARC SUB10/DS-10
SPEAKER CONNECTIONS
Note: DS-10 controls are shown here
RECEIVER/AMPLIFIER
Volume
Line Level
Note: Some receivers/amplifiers have
a single (mono) subwoofer output. In
this case, it is recommended that you
use a “Y”-connector (not included) to
connect to both right & left inputs and
maximize
the
subwoofers
performance.
SUBWOOFER OUT
Min
Max
RIGHT
LEFT
Power
MAIN SPEAKER OUTPUT
Crossover
Frequency
RIGHT
50
Low
Level
In
L
LEFT
150
R
R
L
SPKR
IN
SPKR
OUT
Speaker Level
Note: When using the speaker-level
connections, the built-in high-pass
filter will also limit the low
frequencies being sent to the
satellite speakers. This means that
your satellites won't have to try to
reproduce the information the
subwoofer is playing.
RIGHT
LOUDSPEAKER
LEFT
LOUDSPEAKER
Volume
Min
RECEIVER/AMPLIFIER
Max
Power
MAIN SPEAKER OUTPUT
LEFT
RIGHT
Crossover
Frequency
50
Low
Level
In
L
150
R
R
L
SPKR
IN
SPKR
OUT
LEFT
LOUDSPEAKER
RIGHT
LOUDSPEAKER
10
Amplifier/Subwoofer
ARC SUB10/DS-10
TROUBLESHOOTING
If you used the high-level (speaker) inputs and
there is no sound from any of the speakers, check
the following:
n
Receiver/amplifier is on and a source is playing.
n
Powered subwoofer is plugged in.
n
Check all wires and connections between
receiver/amplifier and speakers. Make sure all wires
are connected. Make sure none of the speaker
wires are frayed, cut or punctured.
n
Review proper operation of your receiver/amplifier.
If you used the line-level inputs and there is no
sound from the subwoofer, check the following:
n
Receiver/amplifier is on and a source is playing.
n
Powered subwoofer is plugged in.
n
Check all wires and connections between receiver/
amplifier and subwoofer. Make sure all wires are
connected. Make sure none of the wires are frayed,
cut or punctured.
n
Review proper operation of your receiver/amplifier.
If there is low bass output, check the following:
n
Make sure the connections to the left and right
“Speaker Inputs” have the correct polarity (+ and –).
n
Make sure that the subwoofer is plugged into an
active electrical outlet.
n
Adjust the crossover point.
n
If you are using a Dolby* Digital/DTSÒ receiver or
processor, make sure that the subwoofer
adjustments on the receiver/processor are set up
correctly.
n
Slowly turn the level Control clockwise until you
begin to hear the desired amount of bass.
11
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10 / DS-10 TEST SET UP AND PROCEDURE
Volume
AC VOLT METER ( 6V )
CD PLAYER
Min
LINE LEVEL
ARC SUB10 / DS-10
UNDER TEST
PRE AMP
FROM LINE-LEVEL
SOURCE
Power
Crossover
Frequency
50
Low
Level
In
AMPLIFIER
SPEAKER LEVEL
Max
L
150
R
SPEAKER OUTPUT
FROM AMPLIFIER
R
L
SPKR
IN
SPKR
OUT
General Function
UUT = Unit Under Test
1. Connect both right and left line level inputs (RCA) to signal generator and UUT. Use Y-cable if necessary from
mono source. VOLUME control should be full counterclockwise.
2.
Turn on generator, adjust to 50mV, 50 Hz.
3.
Plug in UUT; red LED should be ON. Turn VOLUME control full clockwise.
4.
LED should turn Green; immediate bass response should be heard and felt from port tube opening.
5.
Turn off generator, turn VOLUME control fully counterclockwise, disconnect RCA cables.
6.
Connect one pair of speaker cables to either high level input terminal on UUT. Cables should be connected to
an integrated amplifier fed by the signal generator.
7.
Turn on generator and adjust so that speaker level output is 2.0V, 50 Hz. Turn VOLUME control full clockwise.
8.
Green LED should light, immediate bass response should be heard and felt from the port tube opening.
Sweep Function
1.
Follow steps 1-4 above, using a sweep generator as a signal source.
2.
Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any
other noises. If any unusual noises are heard, remove driver and test.
Driver Function
1.
Remove driver from cabinet; detach + and - wire clips.
2.
Check DC resistance of driver; it should be 3.2 to 3.9 ohms.
3.
Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by
a signal generator and adjust so that speaker level output is 5.0V.
4. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
12
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10 / DS-10 POWER AMP MODULE TESTING FLOW CHART
START
Check V+,
V-, +/-15V
voltage to
module
Resistance
check
between V+
V- and O/P
O/P to GND
should > 5K
No
OK
Yes
No
OK
Replace
Module
Check
transformer,
CMC,
rectifier, C1,
C2, D9, D10,
R16, R17
Check 6V to
module
measure to V-
Yes
No
Power up with
no signal I/P
LED RED
OK
Check D6,
R9, R46
Yes
Check fuse
transformer,
CMC,
rectifier, C1,
C2
No
OK
Yes
Check I/P of
module to
GND 0V D.C.
Check S/D
voltage to
module (5V)
measure to VNo
OK
No
OK
Yes
Check
switching
frequency
100KHz
H
+/-10%
~1Vpp
Check C12
and Pre-AMP
Check D1,
R1, Q3, Q4,
Q5 and SCP
Yes
Check O/P to
module for
80Vpp square
wave
measure to
GND
No
OK
Yes
No
OK
Check L1,
L2, C6, C24
Yes
Power AMP
OK
END
13
Amplifier/Subwoofer
ARC SUB10/DS-10
SERVICE BULLETIN JBL9903 - APRIL 1999
To all JBL Service Centers
Model: ARC SUB10 / DS-10
This considered a Minor repair
Subject: Check Solder Joints in Event of Failure
Some performance related complaints in the ARC SUB10 / DS-10 powered subwoofer may be caused by cold
Solder connections between the 28 pins of the Power Amp Module and the main circuit board. When
troubleshooting, failure to check these joints can result in erroneous conclusions or wasted time.
In the event you receive a ARC SUB10 / DS-10 Subwoofer with the complaints “Dead, or No Output, or
Motorboating (Oscillation)”, perform the steps listed below first before any further troubleshooting takes
place:
1) Unplug all cables, lay the subwoofer on a padded surface.
2) Remove all Philips screws around the outer perimeter of the amplifier faceplate.
3) Remove amplifier assembly; you should be able to remove the amplifier far enough out of the cabinet to
service it without removing the woofer wires.
4) Locate the Power Amp Module; it is the large gray component with a metal case. On the Solder side of the
circuit board are the 28 Solder connections to the Module.
5) Regardless of whether you can visibly see breaks in any of the connections or not, carefully re-Solder all 28
pin connections, adding 60/40 rosin core Solder. Take care not “bridge” any connections on the board with
Solder.
6) Inspect the Solder joints to the main filter capacitors C1 and C2 on the main PCB and re-Solder if needed.
7) Replace the amplifier assembly back into the cabinet; replace the screws.
8) Test the unit by applying a signal from a music source, adjust the volume to a moderate level and confirm the
original problem has been corrected.
14
Amplifier/Subwoofer
ARC SUB10/DS-10
SERVICE BULLETIN JBL2000-01 - JANUARY 2000
To all JBL Service Centers
Model: ARC SUB10 / DS-10
Warranty labor rate: MINOR repair
Subject: Failure of C6
In the event you receive a JBL subwoofer corresponding to one of the above models with the complaint “no output” and
capacitor C6 (10uf 50v NPE) is damaged in the amplifier, replace with the following part: JBL part# 30712 (10uf 100v NPE)
General reference for location only; not all parts or designators may conform to these drawings
It is also recommended following the repair that the instructions included in bulletin #JBL9903 are followed.
Models
Serial number 120/230V
Status
Action
ARC SUB10 / DS-10
All serial numbers affected
Replace if damaged
Replace C6 with JBL part# 30712
15
Amplifier/Subwoofer
ARC SUB10/DS-10
TROUBLESHOOTING TIPS AND SOLUTIONS TO COMMON SERVICE PROBLEMS
For models: ARC SUB 8, ARC SUB 10
TIP# JBLTT2000-01
Complaint:
How do you replace or service any of the front panel components on the Subwoofer faceplate for model ARC
SUB 10 ?
Probable Cause:
The High level Input terminals, potentiometers, RCA jack, and switch(es) are behind a sealed cover to protect the
air-tight integrity of the cabinet enclosure.
Solution:
1) Unplug all external cables from the subwoofer; place the cabinet on a padded surface.
2) Remove any subwoofer grille; remove the woofer from the cabinet. Detach the two connections from the
woofer terminals.
3) Remove all Phillips screws holding the amplifier to the cabinet; remove the amplifier.
4) Remove all knobs, nuts, and Philips screws from the outer control section of the amplifier faceplate.
5) Locate the sealed cover on the inside of the amplifier faceplate (see illustration); the bead of adherent must
be broken to remove the main PCB with front panel components from the plastic faceplate. This is most
easily accomplished by CAREFULLY using a box cutter, exacto knife, or similar sharp instrument. First scrape
all excess material from the three surfaces; then force the blade into the groove between the rear cover and
the faceplate. DO NOT attempt to remove the rear cover from the main PCB.
6) When enough material is removed, the main PCB with cover can be pulled away from the faceplate,
exposing the components.
7) After servicing, a bead of “silicon seal” or similar adherent must be applied to all surfaces where it was
removed. Reassemble the rest of the components in reverse order.
16
LR 110113
~
SPKR
In
SPKR
Out
TO REDUCE THE RISK OF ELECTRIC SHOCK. DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
L
JBL CONSUMER PRODUCTS, INC.
NORTHRIDGE, CA MADE IN CANADA
XXXXXX-XXXXX
Serial No.
R
Discrete Digital AMPLIFICATION
ARC SUB 8
NRTL
120VAC
60Hz
110W
R
L
50
150
Power
Low Level In Crossover Frequency
Min
Volume
Max
DS-10 CABINET
EXPLODED VIEW
CABINET
(NOT FOR SALE)
~
NRTL
120VAC
60Hz
110W
LR 110113
SPKR
In
SPKR
Out
L
CAUTION
TO REDUCE THE RISK OF ELECTRIC SHOCK. DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
JBL CONSUMER PRODUCTS, INC.
NORTHRIDGE, CA MADE IN CANADA
XXXXXX-XXXXX
Serial No.
R
Discrete Digital AMPLIFICATION
ARC SUB 8
R
L
50
150
Power
Low Level In Crossover Frequency
Min
Volume
Max
Amplifier/Subwoofer
ARC SUB10/DS-10
CABINET EXPLODED VIEWS
ARC SUB10 CABINET
EXPLODED VIEW
SCREWS (8X)
GRILLE
#200110
CABINET
(NOT FOR SALE)
GRILLE
RETAINER
CUPS (4)
#201080
AMP ASSEMBLY
(NOT FOR SALE)
SCREWS (4X)
10" WOOFER
#200500
ARCSUB10 LABEL
#200160
GRILLE
#201010
GRILLE
RETAINER
CUPS (4)
#201080
SCREWS (8X)
SCREWS (4X)
WOOFER TRIM
RING #201060
AMP ASSEMBLY
(NOT FOR SALE)
KICKPLATE
with LOGO
#201070
SCREWS (4X)
10" WOOFER
#201000
DS-10 LABEL
#201150
17
Amplifier/Subwoofer
ARC SUB10/DS-10
AMPLIFIER EXPLODED VEIW
A
1
2
C
B
Description
Part #
1
70170
#4x0.5" screws to secure input jacks
3
2
70171
#10 x 1" machine screw bolts for
transformer 4 per unit
4
3
70172
#10 keps nuts for transformer
4
4
70173
#6 x 0.5" screws for fuse PCB
2
5
A70301
Hum shield Metal bracket mounted
on transformer
1
6
A70302
Knobs
2
10
80108
TRX Transformer #4340 SAFETY PART
1
11
80109
F1 250V, 0.63A, T type slo blo fuse
1
12
80105
Power cord, 2 conductor SAFETY PART
1
13
80106
Fuse PCB complete with connectors
SAFETY PART
1
14
80107
Main PCB Motherboard SAFETY PART
1
15
200603
ARCSUB10 Faceplate with labels
SAFETY PART
DS-10 Faceplate with labels
SAFETY PART
1
201003
ARC SUB10/DS-10
Amplifier Assembly
Exploded View
A70304
Air leak cover SAFETY PART
1
17
70305
Pwr cord strain relief SAFETY PART
1
18
108320
Dual RCA input jacks
1
19
108115
High level input and output terminals
1
4
5
Min
14
16
3
4
17
Max
15
Power
50
L
12
2
6
Crossover
Frequency
6
11
13
6
Volume
Low
Level
In
2
10
DS-10 Shown
5
1
3
1
16
4
E
Qty
Ref.#
3
D
5
150
R
18
6
1
R
19
L
7
SPKR
IN
A
7
SPKR
OUT
B
C
D
E
18
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 PACKING EXPLODED VIEWS
DS-10
PACKING
RUBBER FEET (4)
#101145
ARC SUB10
PACKING
RUBBER FEET (4)
#101145
WARRANTY CARD
#331993-001
WARRANTY CARD
#331993-001
OWNER'S MANUAL
#201030 (120V)
OWNER'S MANUAL
#200130 (120V)
STYROFOAM
CORNERS (8)
PER BOX
FOAM CORNER
PADS
ARC SUB10
D
E
DS-10
C
A
D
E
S
E
R
IE
S
PLASTIC BAG
PLASTIC BAG
FOAM CORNER
PADS
STYROFOAM
CORNERS (8)
PER BOX
CARTON
#201020
DS
-10
CARTON
#200120
AR
CS
UB
10
19
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10 Version 5 PCB
A
B
C
D
E
The PLAIN 5 PCB was used in ARCSUB10
1
1
PLAIN 5 - Component Side Trace
2
2
3
3
4
4
PLAIN 5 - Solder Side Trace Layer as viewed through the board
5
5
6
6
7
7
A
B
C
D
E
20
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 Version 5.1 PCB
A
B
C
D
E
PLAIN 5.1 - Component Side Trace
1
1
2
2
3
3
4
4
PLAIN 5.1 - Solder Side Trace Layer as viewed through the board
5
5
6
6
7
7
A
B
C
D
E
21
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 ELECTRICAL PARTS LIST
Ref. #
Part Number
Description
Qty
Ref. #
Part Number
Description
Qty
Product Safety Notice: Components identified by the IEC symbol in the part list
and on the schematic designate safety components in which safety can be of
special significance. When replacing a Active component with the symbol . Use
only replacement parts with the same rating hardware designated in the parts list.
R15, 42, 43, 57
40406
100kW
R16
40101
820W
R17
40407
330kW
0.25W ±5% carbon film
1
Capacitors
0.25W ±5% carbon film
1
0.25W ±5% carbon film
2W ±5% carbon film
4
2
R18
40423
270kW
3300uF 50V ±20% Elect. Radial Safety Part
2
R19
40422
1kW
C3, 4, 5, 8, 9,
30502
10, 14, 17, 18,
19, 20, 24
100nF 50V ±10% Mono-ceramic axial
12
R22
40410
2.2kW
0.5W ±5% carbon film
1
R26
40701
1.0MW
0.25W ±5% carbon film
1
C6
30705
10uF 100V ±20% Elect. Radial NP Safety Part1
See Page 15 Service Bulletin
R27
40411
24.9kW
0.25W ±1% metal film
1
C7A, B
30505
100nF 100V ±20% Metal Polyester Rad
2
R29
40103
470W
C7
30509
2.7nF 50V ±10% Mono-ceramic axial
1
R30
40413
274kW
0.25W ±1% metal film
1
C10
30504
100nF 50V ±10% Mono-ceramic axial
1
R31
40414
49.9kW
0.25W ±1% metal film
1
C11
30702
100uF 35V ±20% Electrolytic Radial
1
R32
40415
470kW
0.25W ±5% carbon film
1
C12
30714
10uF 35V ±20% Electrolytic Radial
1
C13
30506
1nF 50V ±10% Mono-ceramic axial
1
220uF 50V ±20% Electrolytic Radial Bipolar
2
C1, C2
C15, 16
30701
30704 or 30707
C21, 28
30507
10nF 50V ±20% Mono-ceramic axial
2
C25
30503
2.2nf 50V ±10% Mono-ceramic axial
1
DBR
50100
Bridge Rect 200V 4A Safety Part
1
D1
50101
1N5256B 30V ±5% 0.5W Zener
1
D3
50102
1N4749A 24V ±5% 1W Zener
1
D6
50103
1N5234B 6.2V ±5% 0.5W Zener
1
D7, 8
50104
1N4148 100V ±5% 0.1A
2
D9,10
50105
1N4744A 15V ±5% 1W Zener
2
LED 1 or 2
50106
Dual Cir LED (2 legged)
Diodes
60100
LM324 Quad OpAmp +/-15
1
FRQ pot
40401
100kW
0.25W ±10% Single Log Pot
1
VOL Level pot
40402
5kW
0.25W ±10% Single Linear Pot
1
R1
40403
2.2MW
0.25W ±5% carbon film
1
R2
40408
8.45kW
0.25W ±1% metal film
1
R3
40412
33.2kW
0.25W ±1% metal film
1
R4A, B
40105
0.1W
0.5W ±5% 2pcs.
2
R5, 6
40420
1kW
0.25W ±5% carbon film
2
R7
40718
3.3kW
0.25W ±5% carbon film
1
R8
40417
47kW
0.25W ±5% carbon film
1
R9
40421
3.9kW
5W ±5% 3W can be used
1
R10, 13
40748
2kW
R11, 12
40112
665W
0.5W ±5% carbon film
2
R14, 20
40405
4.7kW
0.25W ±5% carbon film
2
Resistors
2W ±5% carbon film
1
0.25W ±5% METAL OXIDE Safety Part 1
R35
40424
332kW
0.25W ±1% metal film
1
R36, 38, 40
40417
47kW
0.25W ±5% carbon film
3
R37
40418
22kW
0.25W ±5% carbon film
1
R39, 48
40419
6.04kW
0.25W ±1% metal film
2
R46
40111
4.7W
0.25W ±5% carbon film
1
R49
40431
68kW
0.25W ±5% carbon film
1
R53, 54, 55, 56
40106
100W
2W ±5% carbon film
4
Q1
60151
MPS A13 30V NPN(Darl) Transistor
1
Q2
60152
2N3906 40V PNP Transistor
1
Q3
60156
2N4401 40V NPN Transistor
1
Q4, 5
60154
MPS A56 80V PNP Transistor
2
S53AMI
60301
Power Amp module Safety Part
1
CMC1
80100
2.2mH Choke Safety Part
1
L1
80101
110uH Choke Safety Part
1
L2
80102
2.2uH Ferrite Bead
1
TRX
80108
TRANSFORMER #4338 Safety Part
1
F1
80109
FUSE 250V, 0.63A, T type Slo-Blo Safety Part 1
Transistors
Miscellaneous
Integrated Circuit
U1
0.5W ±5% carbon film
2
22
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 INTEGRATED CIRCUITS & TRANSISTORS
S53AMI/S64AMI - Power Amp module SAFETY PART
+6V 15
1
16
2
17
3
18
4
O/P 19
5
20
6
21
7
22
8
+15V 23
9
v+
V-
+6V
NOTE: THE FOLLOWING PROCEDURES MUST BE FOLLOWED
WHEN INSTALLING NEW S53AMI/S64AMI AMP MODULES:
FAILURE TO FOLLOW ONE OR MORE OF THESE STEPS MAY
RESULT IN THE INSTANT DESTRUCTION OF THE MODULE WHEN
POWERED UP.
v+
1) Align white indent marker on Amp Module with indent marker on main
O/P
PCB; alternately observe position of label on the top of the module;
incorrectly replacing the Module 180° in the PCB slot will result in its
destruction.
2) All AC powered test instruments (meters, oscilloscopes, etc.) must
V-
have a floating ground, i.e. be connected to an isolation transformer.
3) Align and position the Amp Module before soldering.
4) Attach the amp Module with the mounting screws before soldering or
+15V
SD 24
10 SD
FR 25
11 FR
I/P 26
12 I/P
GND 27
13 GND
-15V 28
14 -15V
powering up.
5) Use only rosin-core or non-acid core solder; thoroughly de-flux the
surfaces after soldering.
If the new S53AMI/S64AMI Amp Module has larger mounting hole(s) in
the case, and the stock screws no longer will fit, and screws of the
proper type cannot be obtained locally order:
(2) part# 60301S (screws)
(2) part# 60301N (nuts)
U1 - (LM324) Quad Op Amp
GND
IN 3 +
IN 3 -
OUT 3
14
13
12
11
10
9
8
-
IN 4 +
-
+
IN 4 -
+
+
OUT 4
+
4
-
1
2
3
OUT 1
IN 1 -
IN 1 +
Q4, 5 - (MPS A56)
80V PNP Transistor
4
V+
5
6
7
IN 2 +
IN 2 -
OUT 2
Q2 - (2N3906)
40V PNP Transistor
3 Collector
2 3
Q3 - (2N4401)
40V NPN Transistor
1
2 3
3 Collector
2
Base
2
Base
1 Emitter
Q1 - (MPS A13)
30V NPN(Darl) Transistor
3 Collector
3 Collector
2
Base
1
2
-
1
3
1 Emitter
1
2 3
2
Base
1 Emitter
1
2 3
1 Emitter
23
5
4
3
TERMINAL
High Level Out
A
C15
200uF
TERMINAL
High Level In
L
L
SPKR LEV IO
R
C16
200uF
R
SPKR LEV IO
R39
6k04
C19
R IP
RCA
L IP
RCA
R56 100r
13
12
R35
RCA Connector
14
LM324
U1
LINE LEVEL INPUT
R48
6k04
100nF
R54 100r
2
C18
100nF
R55 100r
332k
R53 100r
C20
100nF
10k
R44
10k
R45
R43 100k
HI-PASS / EQ
100nF
C10
ARC SUB10/DS-10
Schematic
B
B
R42 100k
1
A
C13
1nF
47k
R40
3
2
1
2
D8
1N4148
4k7
R14
V-
47k
R36
11
-15V
U1
+15V
C9
100nF
4
R20
R18
330k
4k7
C11
100uF
C
R32
470k
R22
2k2
LED
DRIVE
1000k
R26
Q2
2N3906
C17
100nF
3
1
D3
1N4749A
Q1
MPSA13
10k
R21
LED1
2 Clr LED
R19
1k
665r
V+
R10
2k
665r
R13
2k
R11
R12
D7
1N4148
10nF
7
C14
100nF
5k LOG
LEVEL
U1
R38
47k
C21
Control
6
5
2n7F
C7
100k
R57
24k9
R31
49k9
R30
274k
LOPASS CONTROL
100k Lin Pot
R27
LO-PASS
C
22k
R37
D
8
LM324
U1
DIODE CLIPPER
10
9
3n3F
C25
700Hz Lo-Pass
D
C1
3300uF
R2
8k45
100nF
GND
3300uF
C2
R49
68K
R17
820r
C5
100nF
10uF
C12
C4
100nF
R16
820r
1N5234B
D6
C8
+6V Supply
E
E
UVLO
V+
BR RECT
1N4744A
D9
1N4744A
D10
R1
2200k
D1
1N5256B
R9
3k9
47r
R46
-15V
GND
I/P
FR
S/D
+15V
V-
O/P
V+
+6V
V-
DA
2m2H
CMC
R3
33k2
100nF
C3
1N4735A
100nF
100nF
10k
R28
0.63A
To Power Cord
F
100k
R15
R6
1k
SPK+
QUICK FIT TERMINAL
C24 SPK100nF
QUICK FIT TERMINAL
G
QUICK FIT TERMINAL
QUICK FIT TERMINAL
G
QUICK FIT TERMINAL
AC Return
GND
AC Feed
To Power Cord
OUTPUT FILTER
10uF
C6
Q5
MPSA56
R4B
0.1R
L1 110uH
FUSE (On FUSE PCB)
TRX
C7B
R8
47k
See page 15
Service Bulletin
R4A
0.1R
R5
1k
Q4
MPSA56
2.2uH
C7A
10nF
C28
L2
2N4401
MCI 4338
Q3
3k3
R7
SHORT CIRCUIT PROTECT
TRANSFORMER IS MOUNTED ON FACEPLATE
To AC Return
To GND
To AC Feed
RS604
S53
MODULE
470R
R29
F
5
4
3
2
1
Amplifier/Subwoofer
ARC SUB10/DS-10
ARC SUB10/DS-10 SCHEMATIC
24
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