JBL Studio 2 88 IW User manual

1
Service Manual
JBL STUDIO 2 ARCHITECTURAL SPEAKER
SKU: JBL Studio 2 88IW
Studio 2 88 IW
CONTENTS
Safety Instruction .................................................................................................... 2
Technical Specifications........................................................................................... 5
Disassembly Instruction........................................................................................... 6
Circuit Diagram & PCBA Layout ............................................................................... 8
Mechanical Exploded View.....................................................................................10
Spare Parts List...................................................................................................... 11
Revision List...........................................................................................................12
Released by Global Quality harman/kardon, Inc. Ver. 1.0 July./2019
8500 Balboa Blvd.
Northridge,CA 91329

2
CAUTION
RISK OF ELECTRIC SHOCK. DO NOT OPEN.
THE LIGHTNING FLASH WITH AN ARROWHEAD SYMBOL,
WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO
ALERT THE USER TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” WITHIN THE PRODUCT’S
ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO
CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS.
THE EXCLAMA TION POINTWITHIN AN EQUILATERAL
TRIANGLE IS INTENDED TO ALERT THE USER TO
THE PRESENCE OF IMPORTANT OPERATING AND
MAINTENANCE (SERVICING) INSTRUCTIONS IN THE
LITERATURE ACCOMPANYING THEPRODUCT.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE.
Read theseinstructions.
Keep theseinstructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any ventilation openings.Install in accordance with the manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including
amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or grounding-type plug.A polarized plug has two blades with one
wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the
third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles and the
point where they exit from the apparatus.
Only use attachments/accessories specified by the manufacturer.
Use only with the cart, stand, tripod, bracket or table specified by the manufacturer or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid
injury from tip-over.
Unplug this apparatus during lightning storms or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen intothe
apparatus, or the apparatus has been exposed to rain or moisture, does not operate normally or has been dropped.
Do not expose this apparatus to dripping or splashing and ensure that no objects filled with liquids, suchas vases,
are placed on the apparatus.
Tocompletely disconnect this apparatus from the AC Mains, disconnect the power supply cord plug from the AC
receptacle.
The mains plug of the power supply cord shall remain readily operable.
Do not expose batteries to excessive heat such as sunshine, fire or the like.
Important Safety Instructions
For Products That Transmit and Receive RF Energy:
FCC Regulations (USA Only) FCC
Information For Users
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference; and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
Radio and Television Interference
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation. If this
equipment does cause interference to radio or television
reception, which can be determined by turning the equipment
off and then on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Increase the separation between the equipment and receiver.
• Connect the equipment to a different outlet so that the
equipment and receiver are on different branch circuits.
• Consult the dealer or an experienced radio/TV technician for
help.
NOTE: Changes or modifications not expressly approved by
Harman could void the user’s authority to operate the
equipment.
IC Statement and Warning (Canada Only)
This Class B digital apparatus complies with Canadian ICES-
03. Cet appareil numérique de la classe B est conforme à la
norme NMB-003 du Canada.
For Canadian Model
Modèle pour les Canadien
For Products with Radio Receivers That Can
Use an External Antenna:
CATV or Antenna Grounding
If an outside antenna or cable system is connected to this product,
be certain that it is grounded so as to provide some protection
against voltage surges and static charges. Section 810 of the
National Electrical Code,ANSI/NFPA No. 70-1984, provides
information with respect to proper grounding of the mast and
supporting structure, grounding of the lead-in wire to an antenna
discharge unit, size of grounding conductors, location of antenna
discharge unit, connection to grounding electrodes and
requirements of the groundingelectrode.
Note to CATV System Installer:
This reminder is provided to call the CATV (cable TV) system
installer’s attention to article 820-40 of the NEC, which provides
guidelines for proper grounding and, in particular, specifies that
the cable ground shall be connected to the grounding system of
the building, as close to the point of cable entry as possible.
For CD/DVD/Blu-ray Disc™ Players:
Caution:
This product uses a laser system.To prevent direct exposure to the
laser beam, do not open the cabinet enclosure or defeat any of the
safety mechanisms provided for your protection.
DO NOT STARE INTO THE LASER BEAM.To ensure proper use of this
product, please read the owner’s manual carefully and retain it for
future use. Should the unit require maintenance
or repair, please contact your local Harman Kardon service center.
Refer servicing to qualified personnel only.
For Products That Include Batteries:
Instructions for Users on Removal and Disposal of Used
Batteries.
CAUTION
Risk of e xplosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
Alkaline 0 tt ebraies are considered nonhazardous.
Rechargeable batteries (i.e., nickel cadmium, nickel metal-
hydride, lithium and lithium-ion) are considered hazardous
household materials and may pose an unnecessary health and
safety risk.
In the European Union and other locations, it is illegal to dispose
of any battery with household trash. All batteries must be
disposed of in an environmentally sound manner. Contact your
local waste management officials for information regarding the
environmentally sound collection, recycling and disposal of used
batteries.
To remove the batteries from your equipment or remote control,
reverse the procedure described for inserting batteries in the
owner’s manual.
For products with a built-in battery that lasts for the lifetime of the
product, removal may not be possible for the user. In this case,
recycling or recovery centers handle the dismantling of the
productandthe removal of the battery. If,for any reason, it
becomes necessary to replace such a battery, this procedure must
be performed by authorized servicecenters.
This Class B digital apparatus complies with Canadian
ICES-003.
Cet a ppareil numérique de la classe B est conforme àla
norme NMB-003 du Canada.

3
ELECTROSTATICALLY SENSITIVE(ES) DEVICES
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically
Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor "chip"
components.
The following techniques should be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body
by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strapdevice, whichshouldberemoved
for potentialshockreasons priorto applying powerto the unitunder test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent
electrostatic chargebuild-up or exposureof the assembly.
3. Use onlya grounded-tip solderingironto solderor unsolderES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficientto
damageES devices.
5. Do notuse freon-propelledchemicals. Thesecan generateelectrical changesufficientto damageES devices.
6. Do not remove a replacementES devicefrom its protectivepackageuntilimmediately beforeyou are readyto install it. (Mostreplacement ES devices
are packaged with leadselectrically shortedtogetherby conductive foam, aluminum foil or comparableconductivematerial.)
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassisor
circuit assembly into whichthe device willbe installed.
CAUTION : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimizebodily motionswhenhandling unpackaged replacementES devices. (Otherwise harmless motion such as the brushing together or your
clothesfabricor the lifting of your foot from a carpeted floor can generate static electricity sufficientto damagean ES devices.
POODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing.
Componentsidentifiedwiththe IEC symbol in the partslistare specialsignificanceto safety.When replacing a component identified with
, use only the replacement parts designated, or parts with the same ratings or resistance, wattage, or voltage that are designated in the parts list in
this manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably
insulated from the supply circuit before retuming the product to the customer.

4
SAFETY PRECAUTIONS
The following check should be performed for the continued
protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground (water pipe,
conduit, etc.) by connecting a leakage current tester between the
earth ground and all exposed metal parts of the appliance
(input/output terminals, screwheads, metal overlays, control
shaft, etc.). Plug the AC line cord of the appliance directly into a
120V AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed o.5mA.
Test all exposed
metal surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Leakage
current
tester
Reading should
not be above
0.5mA
Earth
ground
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.
Device
under
test

5
Item
Studio 2 88IW
Nominal Impedance
6-Ohm
Power RMS/Peak
60W/120W
Recommend amplifier power
10-150W
Frequency Response
30-20KHZ
Loudspeaker Sensitivity
88dB
Crossover Frequency
2.8KHz
Woofer
2 x 8” (203mm) Polyplas ®
Woofer
Tweeter
1" (25mm) Pivoting
CMMD ® Lite Tweeter
HARMAN International Industries, Incorporated
8500BalboaBoulevard,Northridge,CA91329USA
www.jbl.com
© 2017 HARMAN International Industries, Incorporated. All rights reserved. JBL is a trademark of HARMAN International Industries,
Incorporated, registered in the United States and/or other countries. Features, specifications and appearance are subject to change without
notice. The Bluetooth
®
word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by HARMAN
International Industries, Incorporated is under license. Other trademarks and trade names are those of their respective owners.The terms
HDMI, the HDMI logo, and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries. Les termes HDMI, le logo HDMI et High-Definition Multimedia Interface sont des marques commerciales ou des
marques commerciales déposées de HDMI Licensing LLC aux États-Unis et dans d’autres pays. Dolby, Dolby Audio and the double-D symbol are
trademarks of Dolby Laboratories. Dolby, Dolby Audio et le symbole du double D sont des marques commerciales de Dolby Laboratories. For DTS
patents, see http://patents.dts.com. Manufacturedunder license from DTS LicensingLimited. DTS, the Symbol,& DTSandthe Symboltogether are
registered trademarks, and DTS Digital Surround is a trademark of DTS, Inc. © DTS, Inc. All Rights Reserved. Features, specifications and
appearancearesubjecttochangewithoutnotice.
JBL STUDIO2

Disassembly instruction(main unit)
Note: In some service positions the components or copper patterns of one board may risk touching its neighbouring PCB boards or metallic parts. To prevent such short‐circuit use a piece of hard paper or other insulating material between them.
DISASSEMBLY INSTRUCTIONS (Main unit)
Crossover disassembly
a) Remove the grille
b) Take off the switch cover（there is glue）
c) Pull off connections of woofer and tweeter
d) Remove 6 screws
e) Remove crossover
(a) (b) (c) (d) (e)
Tweeter disassembly
a) Remove the 3 screws
b) Remove the tweeter
（a) (b)
6
1
2
3

Woofer disassembly Dog disassembly
a) Remove 8 screws a) Remove 8 screws
b) Remove woofer b) Remove 8 dogs
(a) (b)
7

Principle diagram of the crossover (Studio 2 88IW)
8

Principle diagram of the crossover (Studio 2 88IW)
9

Mechanical Exploded View (Main Unit) STUDIO2 88IW
Pos. No.
Part Name
SAP Description
Usage
1
NT-88IW-01
Grille
1
2
PC-6IC-01
Grille trim
1
3
FT-88IW-01
Grille scrim
1
4
PK-IW65-03
Foam gasket
2
5
SR-1845-88F
Dog screw
8
6
MG-0750-15P
Magnet
26
7
SW-IC65-02
Switch cover
1
8
AL-LCR5-05
Logo
1
9
FP-88IW-01
Baffle
1
10
PL-0023-01
Washer
26
11
PK-88IW-01
Gasket on baffle
2
12
PK-IW80-02
Gasket on baffle
2
13
SP-20356-05
Dog leg
8
14
SP-IW65-03
Dog cap
8
15
025D51604
Tweeter
1
16
FL-200I44401-01S
Crossover
1
17
200W41704
Woofer
2
18
LB-200I44401-01
Label
2
19
SR-0504-13
Screw for woofer
8
20
SR-2235-12
Screw for crossover
7
21
SR-0526-08B
Screw for switch
2
10

Spare Parts POR - JBL Studio 2 88IW
Brand
Product Name
Part Number
SAP Description
Usage
UoM
Pos. No.
JBL
Studio 2 88IW
200W41704
WOOFER STUDIO2 88IW
2
EA
17
JBL
Studio 2 88IW
025D51604
TWEETER STUDIO2 88IW
1
EA
15
JBL
Studio 2 88IW
FL-200I44401-01S
CROSSOVER PCB ASSEMBLY STUDIO2 88IW
1
EA
16
JBL
Studio 2 88IW
NT0552
GRILLE ASSEMBLY 88IW
1
EA
1,2,3,4
JBL
Studio 2 88IW
SW-IC65-02
BUTTON COVER STUDIO2 88IW
1
EA
7
JBL
Studio 2 88IW
AL-LCR5-05
LOGO BADGE STUDIO2 88IW
1
EA
8
JBL
Studio 2 88IW
FP88IW
FRONT COVER ASSEMBLY STUDIO2 88IW
1
EA
6,9,10,11,12,14
JBL
Studio 2 88IW
SP-20356-05
DOD LEG STUDIO2
8
EA
13
JBL
Studio 2 88IW
SR-1845-88F
DOG LEG SCREW STUDIO2 6IW/8IW/55IW/88IW
8
EA
5
JBL
Studio 2 88IW
BO-200I44401-01
BEAUTY BOX STUDIO2 88IW
1
EA
11

REVISION LIST
Version 1.0
* Initial release. July. 2019