JBL Speaker System E250P User Manual

Models:

Northridge^™E-Series E250P

Performance Series P12SW

Powered Subwoofers

Service Manual

JBL Consumer Products

250 Crossways Park Dr.

Woodbury, New York 11797

Rev3 4/2006

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E250P/P12SW subwoofers

SAFETY INFORMATION

Warning

List of Safety Components

Requiring Exact Replacements

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

personal ONLY!

Part Number/

Designator

Description

Line Fuse Slo Blo 2.0A

5x20mm

093-105202-300

Caution

083-041802-009

250V UL approved SPT-2 or

better with polarized plug, UL

approved wired with the hot side

to fused

Early revisions of the unit did not have a power switch.

Hazardous voltages are resent within the unit whenever it

is plugged in.

side. Use with factory

replacement panel strain relief

(70305) only.

Before 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.

Power Transformer.

Use only factory

replacement.

PT1

042-010053-003

BR1

052-400080-000

Bridge diode. Use only

factory replacement.

Leakage/Resistance Check

3300uF 80V 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.

Before returning the unit to the customer, perform a

leakage or resistance test as follows:

Leakage Current. Note there is no power switch on early

revisions of 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.

C6,8

034-330780-300

Rear Amp Cover

Use only factory

replacement

063-531808-000

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.

Inductor

043-560200-000

L1 - Use only factory

replacement

WARNING! DO NOT return the unit to the customer if it

fails one of these tests until the problem is located and

corrected.

Inductor

043-300101-000

L2 - Use only factory

replacement

Inductor

043-700101-000

L3 - Use only factory

replacement

Critical Components

Inductor

043-324300-000

L4 - Use only factory

replacement

All components identified with the IEC

symbol in the parts list and schematic

diagram designate components in which

safety can be of special significance when

replacing identified with. Use only the

replacement parts designated in the parts list or parts

with the same rating of resistance, wattage or voltage.

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E250P

Packaging

1 5

Ref#

Part Number

Description

Qty

351249-002

351249-001

351249-003

350884-003

351252-001

351252-002

338381-001

352024-001

MANUAL, OWNER-E250P/E250P

CARTON,MASTER-E250P (BEECH MODEL)

CARTON,MASTER-E250P (BLACK MODEL)

CARTON,MASTER-E250P (CHERRY MODEL)

PAD,END,TOP-E250P

PAD,END,BOT-E250P

WARRANTY CARD,1/5YR,JBL

ASY, GRILLE, BLK, FRNT

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P12SW

Packaging

Ref#

Part Number

Description

Qty

361803-001

361813-001

351252-001

351252-002

338381-001

352024-003

P12SW Owner’s Manual

P12SW Outer Carton

Packing Foam (Top)

Packing Foam (Bottom)

Warranty Card

Front Grille

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E250P/P12SW subwoofers

JBL E250P/P12SW Powered Sub/ Plate Amp

LINE VOLTAGE

US 120vac/60Hz

EU 230vac/50-60Hz

Yes/No

Yes

Hi/Lo Line

108-132

207-264

Nom.

120

230

Unit

Notes

Vrms

Normal Operation

Normal operation, MOMS required

QA Test

Limits

Parameter

Specification

Unit

Conditions

Notes

Amp Section

Type (Class AB, D, other)

Load Impedance (speaker)

Rated Output Power (120VAC

Rated Output Power (230VAC

n/a

140

130

5.6

150

Ohms

Watts

Nominal

Domestic version only 120 VAC-60 Hz

EU Version only

230 VAC-50 Hz

Average RMS power, 3/20 Cycles 50 Hz, Driven

6dB above its input sensitivity sensitivity

145 Watts

AVG RMS Dynamic Power

THD @ Rated Power

THD @ 1 Watt

250

0.3

0.1

Watts

225

0.5

22k filter

@ Speaker Outputs

DC Offset

10 mV-DC

Measured at the speaker cable. 150 Watts @

THD < 0.1 % @ 50 Hz

Damping factor

>50

Measured at amplifier board

Input Sensitivity

Input Frequency

L&R

LFE input

Speaker/Hi Level Input

240

2.4

Nominal Freq.

To 150 Watts

mVrms

Vrms

±2dB

Single input driven

Single input driven, LFE switch ON

Single input driven

Signal to Noise

SNR-A-Weighted

SNR-unweighted

SNR rel. 1W-unweighted

dBA

dBr

relative to rated power

relative to 1W Output

A-Weighting filter

22k filter

Volume @max, using RMS reading Line level inputs must be terminated using

Residual Noise Floor

mVrms

DMM/VOM (or A/P) BW=20 Khz.

Volume @max, w/ A/P Swept

Bandpass Measurement (Line

freq.+ harmonics) (BW=20 Khz)

1KOHM

Line level inputs must be terminated using

1KOHM

1.5 mVrms(max)

Input Impedance

Line Input (L, R,LFE)

Speaker/Hi Level Input

10K

> 4.7K

ohms

n/a

Nominal

Filters

LP filter 4th order fixed

Subsonic filter (HPF) 3rd Orde

LFE Low pass 2nd order

60-180 Hz

Fixed

200>LP<1K Hz

± 10

2nd order variable + 2nd order fix-24 db/Octave

LFE input driven only

Speaker input driven - Speaker out

loaded with 4 Ohms

HP speaker out connector

200 Hz

100 Hz

± 10

(Applies only to 230V Model)

Maximum THD as a result of limiting.

Note: 120V Models do not

have speaker output

Speaker input driven - Speaker out

loaded with 8 Ohms

Limiter

THD at Max. Output Power

n/a

functional Maximum Output Power

Features

Volume pot Taper (lin/log)

Phase switch

LP Filter defeat switch

LOG

0-180

YES

deg

functional

A Taper

Disables LP filter, intended for LFE

Input Configuration

Line In (L,R) & LFE

Spkr/Hi Level In

functional

Dual RCA jack

YES

Binding post connector L&R

Signal Sensing (ATO)

Auto-Turn-On (yes/no)

ATO Input test frequency

ATO Level LFE Input

ATO Level Speaker in

YES

functional

Maximum acceptable level.

Amp connected and AC on, then

ATO Turn-on time

functional input signal applied

T before muting, after signal is

removed

Auto turn of time (T) must be 5 > T < 15

Minutes

Auto Mute/ Turn-OFF Time

Power on Delay time

15 minutes

sec.

AC Power Applied

Transients/Pops

ATO Transient

mV-peak

n/a

@ Speaker Outputs

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E250P/P12SW subwoofers

QA Test

Limits

2v-pp

Parameter

Turn-on Transient

Turn-off Transient

Specification

Unit

Conditions

@ Speaker Outputs

Notes

50 mV-peak

AC Line cycled from OFF to ON

AC Line cycled from ON to OFF

2v-pp

Efficiency

Nominal Line voltage 120 VAC

Maximum allowable input power under nominal

Input voltage and frequency, HOT or COLD

operation.

Stand-by Input Power

Power Cons. @ rated power

234

Watts

240

@ nom. line voltage

150 Watts @ 5.6 Ohms nominal line voltage

Protections

Amplifier should resume operation after short

circuit condition removal

Temperature rise in accessible metal parts

should not exceed 35K rise for domestic version

Short Circuit Protection

YES

functional Direct short at output

@1/8 max unclipped Power at 1.06 or 30K rise for European versions (refer to

Thermal Protection

functional times the input voltage

requirements sheet).

Design must insure no Offset at the speaker

output under any operating condition including

abnormal operation

DC Offset Protection

Line Fuse Rating

USA-Domestic

YES

DC present at Speaker Out leads

Amps

Type-T or Slo Blo-250 V

Type-T or Slo Blo-250 V, Low

Breaking capacity

Internal fuse with UL/SEMKO rated holder

1.25

4. ALL SPECS SHOULD BE MEASURED AT NOMINAL LINE VOLTAGE.

SPEAKER CONNECTION

When we designed the E150P, E250P, P10SW and P12SW powered subwoofers, our

goal was to offer the user the best possible performance combined with the most flexible

and complete installation options.

Please look over the following three examples to determine which description best

matches your system and follow the corresponding hookup instructions.

To use the binding-post speaker terminals with bare wire, unscrew the collar until the

hole through the center post is visible under the collar. Insert the bare end of the wire

through the hole in the post, then screw the collar back down until the connection is

tight. The holes in the center of the collars are intended for banana-type connectors.

Speakers and electronics terminals have corresponding positive (+) and negative (–)

terminals. It is important to connect both speakers identically: positive (+) on the speaker

to positive (+) on the amplifier and negative (–) on the speaker to negative (–) on the

amplifier. Wiring “out of phase” results in thin sound, weak bass and a poor stereo image.

NOTE: The speaker-level connection method described on the next page is not a

preferred connection and should only be resorted to if your receiver/processor does not

have a line-level or subwoofer output. The customer is responsible for proper

connections, and any damage to JBL or other equipment due to improper connections

will not be covered by your JBL warranty. Consult with your JBL dealer or an audio

installation expert if you have any questions about how to connect your subwoofer using

the speaker-level inputs.

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E250P/P12SW subwoofers

Analog Receiver/Processor – Speaker-Level Connections

Use this installation method

only with an analog receiver/

processor that does not have

digital processing or bass

management, and also does

not have a subwoofer output

or a volume-controlled preamp

(line-) level output:

the left high-level inputs on

the subwoofer. Insert the

speaker and left input on the

subwoofer, and then for the (+)

and (–) connections for the

right front speaker and right

high-level inputs on the sub-

woofer.

joined (twisted) wires into the

left front (+) terminal on your

receiver/amplifier. Connect the

free end of the (+) lead for the

left front speaker to the (+) ter-

minal on the back of the

speaker. Connect the free end

of the (+) lead for the left input

on the subwoofer to the left

binding-post terminal. Repeat

this process for the (–)

Connect your receiver or

amplifier’s center and sur-

round speaker terminals to the

corresponding terminals on

the back of your center and

surround speakers.

Connect the speaker wires for

both your main left and right

speakers, and for the sub-

woofer, to the same speaker

terminals on your receiver or

amplifier. The wires may be

joined by twisting together the

bare ends of the two leads

that will be connected to each

terminal on the receiver/

amplifier, as shown in the

diagram. This procedure

should be done only four times

(involving a total of eight bare-

wire ends), and only for those

wire ends that are being con-

nected to the terminals on

your receiver/amplifier. It is

important that you avoid join-

ing any other wires. Do not

twist together

connections for the left front

Left Front

Right Front

Center

–

Subwoofer

HIGH

LEVEL

–

Receiver

wire ends that

are being

Left Front

Center

Right Front

inserted into

terminals on any

–

speaker or on the

Tw is t

He re

Tw is t

He re

subwoofer. Do not twist

together wire ends that will be

used for any speakers other

than the front left and right

speakers or the subwoofer.

Refer to the connection dia-

gram for guidance.

Left Surround

Right Surround

–

Left Surround

Right Surround

Twist together the (+) leads at

one end of the speaker wires

that you have designated for

the left front speaker and for

–

To (+) terminal on

left speaker

To front left

(+) terminal on

receiver/amplifier

To (+) terminal of left

input on subwoofer

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E250P/P12SW subwoofers

Analog Receiver/Processor – Line-Level Connections

Use this installation method

with an analog receiver/

processor that does not have

digital processing or bass

management, and that is

equipped with a full-range

subwoofer output or a volume-

controlled preamp (line-) level

output:

may connect the subwoofer

output on your receiver/pre-

amplifier to either the left or

right line-level input on the

subwoofer. It makes no differ-

ence which jack you choose.

LEVEL

Max

NORMAL

Min

LFE

0º

Connect each speaker to

the corresponding speaker

terminals on your

180º

PHASE

Use RCA-type interconnect

cables to connect the line-

level subwoofer outputs on

your receiver or amplifier to

the line-level inputs on the

subwoofer.

receiver or amplifier.

CROSSOVER

FREQUENCY

Make sure your receiver

RECEIVER

150Hz

50Hz

or processor is config-

ured so that the sub-

woofer is “On.”

Subwoofer

Out

LINE LEVEL IN

Note for advanced

For LFE use L or R

IMPORTANT: Make sure that

the LFE toggle switch on the

subwoofer is in the “Normal”

position. Do not use the

“LFE” position with Dolby*

Pro Logic*-only processors.

users: If your receiver/

HIGH

LEVEL

processor has a built-in low-

pass crossover filter for the

subwoofer output, then the LFE

switch should be set to the

“LFE” position to bypass the

subwoofer’s internal

+ –

Note: If your receiver or

amplifier has only one sub-

woofer output jack, then you

crossover.

Digital Receiver/Processor – LFE Connection

Use this installation method

for Dolby Digital, DTS^®or other

digital surround processors

that have bass-management

programming, or for analog

receivers/processors that

have a filtered subwoofer

output:

the left or right line-level input

on the subwoofer. It makes no

difference which jack you

choose.

LEVEL

Max

Connect each speaker to

the corresponding speaker

terminals on your receiver or

amplifier.

Min

LFE

0º

NORMAL

180º

PHASE

IMPORTANT: Make sure that

the LFE toggle switch on the

subwoofer is in the “LFE”

position. Use the line-level

input jacks for the Low-

Frequency Effects channel.

Connect these jacks to the LFE

output or subwoofer output on

your receiver or amplifier.

Make sure that you have

configured your surround

sound processor for

“Subwoofer On” or

“LFE On.” The front,

center and surround

speakers should be

set to “Small” or “Large”

depending on their size and

frequency response. Consult

your receiver’s or processor’s

owner’s manual.

CROSSOVER

FREQUENCY

150Hz

50Hz

RECEIVER/PREAMPLIFIER

Subwoofer

Output/LFE

LINE LEVEL IN

For LFE use L or R

HIGH

LEVEL

Note: If your receiver or ampli-

fier has only one subwoofer

output jack, you may connect

the subwoofer output on your

receiver/preamplifier to either

+ –

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E250P/P12SW subwoofers

O P E R A T IO N

Power

When the unit is plugged in

and the power switch is on

and no signal is received, the

Note: It will take several min-

sumption is minimal when the

subwoofer is not receiving a

signal. Of course, the sub-

woofer can be turned off,

whenever desired, if you do

not wish to leave it in auto

(standby) mode.

utes for the LED to turn from

green to red after the input

signal to the subwoofer is

removed. Due to JBL’s unique

high-output, high-efficiency

amplifier design, power con-

LED on the top of the unit will

turn red. When a signal is

present, the LED will turn

green.

* E250P: LED is on the amplifier faceplate

Level Control

The subwoofer Level Control

adjusts the volume of the

subwoofer relative to the rest

of the system. Proper level

adjustment depends on sev-

eral variables such as room

size, subwoofer placement,

type of main speakers and

position. Adjust the subwoofer

level so that the volume of the

bass information is pleasing

to you.

Crossover Adjustments

The Crossover Frequency

Control determines the highest

frequency at which the sub-

woofer reproduces sounds. If

your main speakers can com-

fortably reproduce some low-

frequency sounds, set this

control to a lower frequency

setting, between 50Hz and

100Hz. This will concentrate

the subwoofer’s efforts on the

ultradeep bass sounds

required by today’s films and

music. If you are using smaller

bookshelf speakers that do not

extend to the lower bass fre-

quencies, set the low-pass

crossover control to a higher

setting, between 120Hz and

150Hz. This control is not used

when the LFE switch is in the

“LFE” position.

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E250P/P12SW subwoofers

Phase Control

The Phase Control determines

whether the subwoofer’s pis-

ton-like action moves in and

out in phase with the main

speakers or opposite the

main speakers. There is no

correct or incorrect setting.

Proper phase adjustment

depends on several variables

such as subwoofer placement

and listener position. Adjust

the phase switch to maximize

bass output at the listening

position.

If at some time in the future

you happen to rearrange your

listening room and move your

speakers, you should experi-

ment with the phase switch in

both positions, and leave it in

the position that maximizes

bass performance.

Remember, every system,

room and listener is different.

There are no right or wrong

settings; this switch offers the

added flexibility to adjust your

subwoofer for optimum per-

formance for your specific

listening conditions without

having to move your speakers.

T R O U B LE S H O O T IN G

If you used the high-level

(speaker) inputs and there

is no sound from any of the

speakers:

If there is low (or no) bass

output:

If you used the line-level

inputs and there is no sound

from the subwoofer:

• Make sure the connections

to the left and right “Speaker

Inputs” have the correct

polarity (+ and –).

•

Check that the receiver/

•

Check that the receiver/

amplifier is on and a source is

playing.

amplifier is on and a source

is playing.

• Make sure that the sub-

woofer is plugged into an

active electrical outlet and

switched on.

• Check that the powered

subwoofer is plugged into an

active electrical outlet and is

switched on.

• Check that the powered

subwoofer is plugged into

an active electrical outlet

and is switched on.

• Adjust the crossover point.

• Check all wires and

• Check all wires and connec-

tions between the receiver/

amplifier and the speakers.

Make sure all wires are con-

nected. Make sure none of

the speaker wires are frayed,

cut or punctured, or touching

each other, except for the

wires for the front left and

right speakers, which may be

joined with the wires for the

subwoofer at the receiver/

amplifier end only, if you are

using the speaker-level

connections between the

receiver/amplifier and the

subwoofer. Make sure all

wires are connected. Make

sure none of the wires are

frayed, cut or punctured, or

touching each other.

• Flip the Phase Control switch

to the opposite position.

• If you are using a Dolby

Digital/DTS receiver or

processor, make sure that the

subwoofer adjustments on

the receiver/processor are

set up correctly.

• Review proper operation of

your receiver/amplifier.

• Slowly turn the Level Control

clockwise until you begin to

hear the desired amount of

bass.

• Slowly turn the Level

Control clockwise until you

begin to hear the desired

amount of bass.

• Make sure that you have

configured your receiver/

processor so that the sub-

woofer/LFE output is on.

connections as described

on page 4.

• Review proper operation

of your receiver/amplifier.

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6 7

E250P

Amplifier – Not for Sale

Exploded View

Ref#

Part Number

Description

Qty

351348-001

338125-002

336486-001

763-31110-40

908302-012

903802-016

338128-002

336799-001

351307-001

333249-003

PLATE,LED/LOGO-E250P

ASY,LED-E250P/E250P

ASY,FOOT,PLSTC- E250P

SCREW, 8 X 2 1/2,TR,PH,PB,BLK ZINC,LCS (FOOT)

SCREW, PB,HXS,#6x.75,ZINC (LOGO PLATE)

SCREW, PB,HXS,#8x1",ZINC

(WOOFER)

ASY, WOOFER,12"

ASY, PORT TUBE

GRILLE, BLK, FRNT

DCR 4.8 Ω

CUP,GRILLE,TITANIUM, (BEECH MODEL) (CHERRY

MODEL)

333249-001

351243-001

903401-012

CUP,GRILLE (BLACK MODEL)

RING,TRIM,12"-E250P

SCREW, 6 X 3/4,PAN,PH,PB,BLK ZINC,LCS (AMPLIFIER)

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P12SW

Amplifier – Not for Sale

Exploded View

Ref#

Part Number

Description

Qty

352024-003

333249-001

882-41110-12

903802-016

351243-001

338128-002

336799-001

336486-001

883-31110-40

361872-001

ASY, GRILLE, BLK, FRNT

CUP,GRILLE

SCREW, 6 X 3/4,PAN,PH,PB,BLK ZINC,LCS (AMPLIFIER)

SCREW, PB,HXS,#8x1",ZINC

RING,TRIM,12"

ASY, WOOFER,12"

ASY, PORT TUBE

ASY,FOOT,PLSTC

(WOOFER)

DCR 4.8 Ω

SCREW, 8 X 2 1/2,TR,PH,PB,BLK ZINC,LCS (FOOT)

JBL LOGO

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E250P/P12SW subwoofers

TEST SET-UP AND PROCEDURE

General Function

UUT = Unit Under Test

1) Connect a pair of level input cables (RCA) from signal generator to either Right or Left Level input on UUT. LEVEL

control should be full counterclockwise (MIN). Make sure the LFE/Normal switch is in the NORMAL position.

2) Turn on generator, adjust to 100mV, 50Hz.

3) Plug in UUT; Turn Main Power switch ON. LED may be either Red or Green. Turn LEVEL control full clockwise

(MAX). Low Pass control should be set fully clockwise (150Hz).

4) LED should turn Green; immediately bass response should be heard and felt from port tube opening.

5) Turn off generator, turn LEVEL control fully counterclockwise (MIN), 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 1.0V, 50Hz. Turn LEVEL control full clockwise (MAX).

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 4.8 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.

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E250P/P12SW subwoofers

& P10SW

& P12SW

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E250P subwoofer

Service Bulletin

Service bulletin # JBL2005-01 December 2005

To: All JBL Service Centers

Warranty labor rate: MINOR repair

Model: E150P, E250P Subwoofers

Subject: “Chirp” Noise on Power-Up

In the event you receive an E150P or E250P with the complaint: “the subwoofer make a slight “chirp”

noise when it becomes active from the stand-by mode”, perform the following modification.

Synopsis: Change C65 PE capacitor from 470µf to 47µf.

1) Remove the amplifer from the enclosure.

2) Remove the cover.

3) Change C65 Electrolytic capacitor from 470µf,16V to 47µf,16V, JBL part# 034-470515-200. Observe

polarity.

4) Replace cover, replace amplifier in enclosure, test subwoofer.

JBL Incorporated

250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400

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E250P/P12SW subwoofers

TECH TIPS

Troubleshooting tips and solutions to common service problems

For models: E150P,E250P TIP# JBLTT2003-04 Rev2

P10SW, P12SW

PB10,PB12 (Revision 2) *

Subject: Replacing MOSFETS Q18, Q22

In the event you need to replace MOSFET transistors Q18 or Q22 as part of a repair, it is

important to use ONLY:

• JBL part# 051-640001-000

• Or JBL part# FE106401110

• Or only the brands: International Rectifier, or Fairchild.

Replace both Q18 and Q22 MOSFET’s in the circuit, even if only one seems to be damaged.

Do NOT mix & match these components from different manufacturers, or batches. They should be

identical.

* Late version PB10 or PB12 subwoofers (Revision 2 in the service manual) can be identified by:

•

Amplifier serial number starts with “HA”

Output transistors in the open, on a large black heatsink

Large plastic cup enclosing the rear of the amp assembly

Main PCB, bottom, solder-side contains all SMD devices

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E250P/P12SW subwoofers

DETAILED TROUBLESHOOTING

A. Power Amp Section

Resistance

Check

Resistance from S+ (SPK O/P) to GND should be >1M Ω (NO LOAD)

Resistance from V+ (C6 P+) to V- (C8 P-) gradually Fully CHARGED should read >10k Ω

Resistance from V+ (C6 P+) to S+ (SPK O/P) should read >1MΩ

Resistance from V- (C8 P-) to S+ (SPK O/P) should read >1M Ω

2. Power Up LED RED

With a 5mV signal to Low level input, LED should change to GREEN

-Voltage measurements (DVM)

OP AMP

LED

RED

GREEN

P-U4(1)

0Vrms

7.13Vrms

P-U4(7)

11.84VDC

-12.93VDC

3. D.C. Operation

-Voltage measurements (DVM) on CLASS D POWER AMP

Q10(C)

GND

Between

And This

Point

V+

Q4(E)

V-

Q1(C)

GND

U7(1)

GND

U7(2)

GND

U7(4)

GND

U7(6)

GND

U7(7)

GND

U7(8)

GND

Get this

Reading

71.7V

-71.7V

-71.7V -71.5V -71.2V

4.65V

4. Check Switching Frequency

•

Oscilloscope - USE THE PROBE TIP TO U6(7) TO GND

Reading 100kHz +/-10%,24Vp-p

B. Pre Amp Section

Line Level Input Sensitivity

-Set up

Turn level, X’OVER FREQ POT Fully CW and LFE switch off

Generator Set at 200mV@50Hz

Signal to Line level input

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E250P/P12SW subwoofers

DETAILED TROUBLESHOOTING (CONT'D)

- Voltage measurements

OP AMP

U3(1) U3(14) U3(8)

SPEAKER

O/P

23.33V

U2(1)

306.9mV

U2(14) U2(8)

460mV

U3(7)

658mV

U5(7)

2.02V

U5(1)

3.57V

461mV

628mV

598mV

2.326V

2. High Level Input Sensitivity

-Set up

Turn level, X’OVER FREQ POT Fully CW and LFE switch off

Set Generator at 1.3V@50Hz

Signal to High level input

-Voltage measurements 15.3V at speaker output

3. Low-Pass

-Set up

Set Generator at 200 mV@100Hz

Signal to Line level input

Measure voltage at S+ speaker output

-Voltage measurement

X’OVER FREQ. Setting

CCW

Output

14.03V

4.8V

4. LFE

-Set up

Set Generator at 200mV@200Hz

Signal to Line level input

Measure voltage at S+ speaker output

LFE switch Setting

Normal

LFE

Output

18.32V

See flow chart next page for diagnostics.

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E250P/P12SW subwoofers

DETAILED TROUBLESHOOTING (CONT'D)

FLOW CHART

CAUTION : SPEAKER OUTPUT IS FLOATING AND IS NOT PROTECTED AGAINST A SHORT

TO GROUND. ALL TEST INSTRUMENTS CONNECTED TO THE OUTPUT MUST

BE FLOATING. ATTACH THE SCOPE PROBE TIP TO S - and REFERENCE

LEAD TO S+.

(A 10mV signal may need from the input to trigger the Switch turn on)

START

Resistance check

(no load)

between V+ V-,

V+ O/P,V- O/P

and O/P to GND

is > 10K

Check +/-15V-MOD

+/-15V voltage at

U 6(8),U6(4)

Check

FB1,FB2,C45,

C50,C60,C63,

R81,R82

Replace

Q18,Q22

yes

I/P:10mv/50HZ

Check +15V/SW

Q4(E) TO V-

15V

Power up with no

signal input

LED RED

Discharge C37,

Check fuse

transformer, L4,

rectifier, C6 and C8

Check

MUTE(-12.9V),

And

yes

Q24,Q25,Q26

yes

Check

U7(1) = -58.3V

Check Q4(E)

TO V-

= 0V D.C.

Check

U7,Q16,Q17,

Q20,Q21,R87,

D26,D35,C64

Check

MUTE(+8V) and

Q24,Q25,Q26

yes

Use scope to

check O/P U7(6)

and GND

143Vp-p square

wave shown

Use scope to check

switching

frequency U6(7)

100KHz

+/-10% , ~24Vp-p

yes

Check

L2,L3,C71,C72,

C73,C74

CLASS D AMP OK

END

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E250P/P12SW subwoofers

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E250P/P12SW subwoofers

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E250P/P12SW subwoofers

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E250P/P12SW subwoofers

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E250P/P12SW subwoofers

E250P/P12SW (120v) Electrical Parts List

Part Number

Description

Reference Designator

Qty

Resistors

020-220497-120

021-100401-120

021-120403-020

021-120405-020

021-220202-120

022-500003-020

024-000098-120

024-100298-120

024-100398-120

024-100498-120

024-100598-120

024-100698-120

024-110598-100

024-120698-120

024-121598-100

024-137698-100

024-150498-120

024-180598-120

024-187698-100

024-200598-120

024-220398-120

024-220498-121

024-220598-120

024-220798-120

024-237598-120

024-243698-100

024-270498-120

024-300398-120

024-300598-120

024-330498-120

024-330598-120

024-332498-100

024-360498-120

024-390498-120

024-390598-120

024-430498-100

024-453598-100

024-470298-120

024-470398-120

024-470498-120

024-470598-120

Carbon Film

2K2 1/4W J

1K 1W J

R11

MOF Resistor

KNP Resistor

SMD Resistor

R103

1K2 3WS J 8x20

1K2 5WS J 8x25

22R 2W(S) J MB TYPE 15x8

0R05 3WS J FK TYPE

0R 1/8W J 0805

R10

R104

R125,126

10R 1/8W J 0805

100R 1/8W J 0805

1K 1/8W J 0805

R81,82

R62

R79,83,92,95,96,105,108,127,65

10K 1/8W J 0805

100K 1/8W J 0805

11K 1/8W F 0805

120K 1/8W J 0805

12K1 1/8W F 0805

137K 1/8W F 0805

1K5 1/8W J 0805

18K 1/8W J 0805

187K 1/8W F 0805

20K 1/8W J 0805

220R 1/8W J 0805

2K2 1/8W J 0805

22K 1/8W J 0805

2M2 1/8W J 0805

23K7 1/8W F 0805

243K 1/8W F 0805

2K7 1/8W J 0805

300R 1/8W J 0805

30K 1/8W J 0805

3K3 1/8W J 0805

33K 1/8W J 0805

3K32 1/8W F 0805

3K6 1/8W J 0805

3K9 1/8W J 0805

39K 1/8W J 0805

4K3 1/8W F 0805

45K3 1/8W F 0805

47R 1/8W J 0805

470R 1/8W J 0805

4K7 1/8W J 0805

47K 1/8W J 0805

R2,17,19,37,54,58,63,71,

R3,112,22-25

R98

R39

R38

R32

R67,68

R29

R45

R94

R90

R1,87,61

R118

R80,121

R48

R36

R73,64

R55

R56

R7,8,12-15,59

R4,5

R26,27,

R28

R93

R77

R78

R30

R101,102

R76,99,100

R85,86

R44,47,49,107

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E250P/P12SW subwoofers

Part Number

Description

Reference Designator

Qty

024-470698-120

024-470798-120

024-487498-100

024-510398-120

024-560598-120

024-620398-100

024-680498-120

024-680598-120

024-820598-120

025-010300-000

026-200595-269

026-500495-252

SMD Resistor

Thermister

470K 1/8W J 0805

4M7 1/8W J 0805

4K87 1/8W F 0805

510R 1/8W J 0805

56K 1/8W J 0805

620R 1/8W F 0805

6K8 1/8W J 0805

68K 1/8W J 0805

82K 1/8W J 0805

TSE-103 K L:50mm

R70

R60

R51,53

R57

R122

R16,18

R46,91,40,41,43,42

R33,34,31,50,52,66

R69

Freq Pot 20K

Level Pot 5K

PN:RD163121R03D-20KBx2(EJ) VR2

PN:RK163111R52B-5KA (EJ)

VR1

Capacitors

031-100244-100

031-100343-100

031-100344-100

031-100384-100R

031-220344-100

031-330444-300

031-470244-102

031-560243-100

031-560343-102

032-100484-200

033-470444-270

033-680464-270

034-100525-300

034-100625-300

034-220525-301

034-220615-301

034-330525-300

034-330615-300

034-330780-300

034-470415-301

034-470615-301

038-100363-300

038-150393-300

038-330393-300

039-100384-100

Ceramic Capacitor

SMD Capacitor

0u01/50V K 0805 X7R

100pF/50V J 0805 NPO

0u1/50V K 0805 X7R

0u1/250V K 1206 X7R

220pF/50V J 0805 NPO

3300pF/50V K 0805 X7R

0u047/50V K 0805 X7R

56pF/50V J 0805 NPO

560pF/50V J 0805 NPO

1uF/250V K P:15

C33,45,51,66,67,5,10

C36,58,16

SMD Capacitor

C11,42-44,46-49,52,54,55,60,63,71,74,77

SMD Capacitor

C3,7

SMD Capacitor

C20,21,19,14,15

SMD Capacitor

C40,34

SMD Capacitor

C62,59

SMD Capacitor

C57,61

SMD Capacitor

C56

Mylar Capacitor

C70,C70B

NPE Capacitor

4u7/50V K10 (R)8x13 SBE

6u8/100V K10 (R)1020 GNE

10uF/25V M (R)0511 P:5

100uF/25V M (R)6.3x11 P:5

22uF/25V M (R)5x11 P:5

220uF/16V M (R)0611 P:5

33uF/25V M (R)0511 P:5

330uF/16V M (R)0812 P:5

3300uF/80V M (R)22x48

4u7/50V M (R)0511 P:5

470uF/16V M (R)0812 P:5

0u1/100V J

C73

NPE Capacitor

C72

Electrolytic Capacitor

MPE Capacitor

C35

C64

C4,9,41,39,50,53

C37

C12,78

C6,8

C65 (See service bulletin)

C68,69,26,27,28,29,30

MPE Capacitor

0u15/63V J

C25

C31

MPE Capacitor

0u33/63V J

Safety Capacitor

HQX0.1K275VACx2 18x6x12mm CXAC1

Semiconductors

051-000600-100

051-003100-000

NPN Transistor

PN:MPSW06RLRA TO-92 (ON)

PN:TIP 31C TO-220 (MOSPEC)

Q2,Q16

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E250P/P12SW subwoofers

Part Number

Description

Reference Designator

Qty

051-005600-100

051-222200-100

051-290700-100

051-540101-000

051-555100-000

051-640001-000

052-400080-000

053-211100-000

054-000100-100

054-001002-100

054-001501-100

054-007200-100

054-007400-100

054-011400-100

054-033904-100

054-033906-100

054-045580-100

054-050601-100

054-414803-100

054-540100-100

054-555100-100

050-505200-001

PNP Transistor

NPN Transistor

PNP Transistor

NPN Transistor

MOSFET N-Channel

Bridge Regulator

IC;DIP,Driver

PN:MPSW56RLRA TO-92 (ON)

PN:MPS2222ARLRA TO-92

PN:MPS2907A RLRA TO-92

PN:2N5401 TO-92

Q21

Q19,23

PN:2N5551 TO-92

Q17

PN:IRF640N TO-220 (IR)

PN:RS804 400V,8A

Q18,22

BR1

PN:IR2111 Half-Bridge Driver

PN:ES1D 200V 1A

SMD Diode

D5,26,29,33,38

D35

SMD Zener Diode

PN:BZX84C10 10V SOT-23

PN:BZX84C15 15V SOT-23

D6,7,9

SMD IC; (Dual OP-Amp) PN:TL072CDR SO-8 (TI)

SMD IC;(Quad OP-Amp) PN:TL074CDR (TI)

U5,6

U2,3

SMD Transistor

PN:DTC114TKA SMT3

PN:MMBT3904LT1 SOT23

PN:MMBT3906LT1 SOT23

Q11,14,13,5,8,9

Q6,10,12,15

SMD IC; (Dual OP=Amp)PN:NJM4558M-TE3 DMP-8

SMD ZENER DIODE

SMD DIODE

PN:BZX84C5V6 5.6V SOT-23

PN:LL4148 (Wishay)

PN:MMBT5401 LT1 SOT-23

PN:MMBT5551 LT1

D24,36,37

D1-4,8,10-23,27,28,

Q20,24,26

Q25

SMD Zener Diode

LED

PN:LT-2402-21

D1B

Miscellaneous

065-050400-000

065-100200-000

082-022640-000

091-000182-000

044-100100-000

041-115001-000

042-010053-003

043-300101-000

043-324300-000

043-560200-000

043-700101-000

008-061215-000

008-062002-002

008-062002-012

008-063208-000

008-069304-000

061-020000-000

061-314002-000

061-400014-000

061-700044-000

Sleeve

φ3.5mm BLK F32 (125℃)

φ2.5 F32-2.5(blk) 125℃

L=400mm blk/wht 2P Hsing +5TT

PN:LED5-2A

UL Sleeve

Wire Set #26 UL1007

LED Holder

SMD Ferrite Bead

Bead Coil

PN:321611 600R/100MHz 1206

YT-10911

Transformer

Inductor

YT-10615-4

PT1

30uH YT-10033

Inductor

324uH YT-10778

Inductor

56uH YT-10779

Toroidal Inductor

Gasket C4305

Gasket

70uH YT-10682

12x15 t=5mm CR

L-32 200x20mm t=5mm PORON

200x20mm t=2mm CR4305

321x8 t=1mm CR

Gasket (PB10/12)

Gasket C4305

Knob ABS

93x4 t=1mm CR

φ20x15m/m UL94V-0 BLK

P/N SB4F-2

Strain Relief

Rubber Foot

Mylar

ID:6.2 OD:11.5 t=2mm blk

13x18mm TO-220

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E250P/P12SW subwoofers

Part Number

Description

Reference Designator

Qty

063-010012-000

063-321100-001

Brckt for pwr transistor P/N:TRK-1

E250P Faceplate 322x105.7x15mm BLK (94V0)ABS E250P

322x105.7x15mm BLK (94V0)ABS P12SW

063-321101-000ZR P12SW Faceplate

063-531808-000

071-100608-100

071-100851-000

072-010007-000

072-040039-000

072-040064-000

072-040096-000

072-040169-000

072-060170-000

073-032315-601

073-050001-000

074-020018-000

074-030002-000

074-300018-000

082-022241-001

083-041802-009

093-105202-300

181-911600-161

181-911655-135

181-921600-000

181-921699-000

Bucket

322x105.7x146.5mm blk (94VO)

OD=8mm ID=3.2 t=1 (red)

ID=5.1 OD=12 t=1m/m

SCJ-1020 2P(G) wht, red

PC205 (t=0.8m/m) T205MA

PC250(t=0.8),T250MA

(t=0.8mm) PC187(0.8)

2 PIN JS-1001-2 P:2.5mm

W / Accessory Parts

70x58x20mm

Fiber Washer

Washer

RCA Jack

Terminal

Terminal T187MA

Connector

AC1,AC3,T1,T2,AC2,SW2,SW4

B.P.

Black Anodized

Fuse Clip

P/N:CFFH1206

Rocker SW

PN:RF1003-BB4-0

Toggle SW

PN:L101-T2B4QE

SW5,SW6

Relay

PN:943-1C-48D

Wire set #22 UL1007

Power Cable

Fuse

L=410mm blk/wht

SPT-2 blk T187

FUSE:2A,250V,5*20mm

blk L=610mm

Wire #16AWG UL1007

blk wire #16 UL1015

wht wire #16 UL1015

green L=610mm

T187 L:140mm

T187 L:160mm

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E250P/P12SW subwoofers

Semiconductor Pinout Diagrams

2N5401

MOSFET IRF640

Q18, 22

OPAMP, QUAD

TL074CDR

U2, 3

3 Collector

1 Emitter

1. G

2. D

3. S

Base

MPSW06RLRA,

MPSW56RLRAMPQ,

MPS2222ARLRA,

2N2907A, 2N5551,

Q2, 16, 3, 21, 19, 23, 17

OPAMP, DUAL

TIP31C

TL072CDR SO-8,

NJM4558M-TE3

U5, 6, 4

3 Collector

Base

1 Emitter

BEVEL

MMBT3904LTI SOT23,

MMBT3906LTI SOT23,

DTC114EK SMT3,

MMBT5401 LTI,

MMBT5551 LTI

IR2111 HALF-BRIDGE

DRIVER

Q11, 14, 13, 5, 8, 9, 6, 10,

12, 15, 7, 20, 24, 26, 25

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E250P/P12SW subwoofers

SCHEMATICS

NOTE: THIS VOLTAGE IS

REFERENCED TO -V,

NOT CIRCUIT GROUND

P12SW Value of C65 = 47uf

See service bulletin for E250P

NOTE: THIS VOLTAGE IS

REFERENCED TO -V,

NOT CIRCUIT GROUND

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NOTE: THIS VOLTAGE IS

REFERENCED TO -V,

NOT CIRCUIT GROUND

E250P/P12SW subwoofers

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