Bose FreeSpace IZA 190-HZ Service Manual

3
SAFETY INFORMATION
CAUTION: The Bose
®
FreeSpace
®
Integrated Zone Amplifier and Zone Amplifier contain
no user-serviceable parts. To prevent warranty infractions, refer servicing to
warranty service stations or factory service.
PROPRIETARY INFORMATION
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF
BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT
BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF
THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR
USED FOR ANY OTHER PURPOSE.
The Bose FreeSpace Integrated Zone Amplifier and Zone Amplifier are covered by
a 5-year limited warranty.
WARRANTY
1. Parts that have special safety characteristics are identified by the symbol on schematics
or by special notes on the parts list. Use only replacement parts that have critical characteristics
recommended by the manufacturer.
2. Make leakage current or resistance measurements to determine that exposed parts are
acceptably insulated from the supply circuit before returning the unit to the customer.
Use the following checks to perform these measurements:
A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord
directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leak-
age current tester or a metering system that complies with American National Standards Institute
(ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL) 6500 / IEC
60056 paragraph 9.1.1. With the unit AC switch first in the ON position and then in OFF position,
measure from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal parts
of the unit (antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control
shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chas-
sis. Any current measured must not exceed 0.5 milliamp. Reverse the unit power cord plug in
the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED
HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE
RETURNING THE UNIT TO THE CUSTOMER.
B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper
wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure
the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic
cabinet part on the unit. When testing 3 wire products, the resistance measured to the product
enclosure should be between 2 and infinite MOhms. Also, the resistance measured to exposed
input/output connectors should be between 4 and infinite MOhms. When testing 2 wire products,
the resistance measured to exposed input/output connectors should be between 4 and infinite
MOhms. If it is not within the limits specified, there is the possibility of a shock hazard, and the
unit must be repaired and rechecked before it is returned to the customer.

Bose FreeSpace IZA 190-HZ Specifications

General

Amplifier class	D
RMS rated power	90 W
Channels quantity	1 channels
Audio output channels	- channels
Peak power per channel	- W
Signal-to-Noise Ratio (SNR)	- dB
Total Harmonic Distortion (THD)	1 %
XLR in	Yes
Line inputs (RCA)	2
Line outputs (RCA)	1
Speakers connectivity type	RCA
Product color	Silver
Rack capacity	1U
Volume control	Rotary
Connectivity technology	Wired
AC input voltage	230 V
AC input frequency	50 - 60 Hz
Power protection features	Overheating, Short circuit
Power consumption (typical)	15 W
Package weight	4100 g

Weight and Dimensions

Depth	310 mm
Width	214 mm
Height	45 mm
Weight	3200 g