Table Of Contents; Specifications - IBM 19K1902 Service Manual

Speaker/usb hub
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SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
OPERATING INSTRUCTIONS ................................ 4
BLOCK DIAGRAM ................................................... 7
DESCRIPTION OF BLOCK DIAGRAM.....................8
TROUBLESHOOTING GUIDE ................................ 9
1. Audio Specifications
RMS Audio Ootput
Input Sensitivity
Speaker Impedance
Distortion
2. USB Specifications
USB Standard
Downstream power supply : 100mA for each(maximum)
Communication speed
USB port
3. POWER SUPPLY
Power Input

SPECIFICATIONS

: 1W+1W(Right+Left)
: 0.7Vrms
: 4Ω
: Less than 2% at 50mW output
: Rev. 1.1 Compliant BUS-
powered hub
: 12Mbps(full), 1.5Mbps(low)
: 1Upstream port /
4Downstream ports
: DC 12V 0.5A
CONTENTS
PRINTED CIRCUIT BOARD................................... 13
EXPLODED VIEW...................................................16
REPLACEMENT PARTS LIST ...............................18
PIN CONFIGURATION............................................20
SCHEMATIC DIAGRAM ......................................... 21
4. ENVIRONMENT
4-1. Operating Temperature: 10°C~35°C (50°F~95°F)
4-2. Relative Humidity
5. DIMENSIONS (with TILT/SWIVEL)
Width
Depth
Height
- 2 -
: 10%~80%
(Non-condensing)
: 397 mm (15.62'')
: 49.4 mm (1.94'')
: 63.5 mm (2.50'')

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19k1901T860

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