![background image](http://html1.mh-extra.com/html/viewsonic/vx900-2/vx900-2_service-manual_1020039044.webp)
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14
Lin 2
I
Light channel input 2
15
Lin 1
I
Light channel input 1
16
LIN
I
Audio processor left channel input
17
Lout
O
Gain output & input selector for left channel
18
Bin _L
I
Left bass controller input channel
19
Bout _L
O
Left bass controller output channel
20
Bin _R
I
Right bass controller input channel
21
Bout _R
O
Right bass controller output channel
22
RRout
O
Right rear speaker output
23
LRout
O
Left rear speaker output
24
RFout
O
Right front speaker output
25
LFout
O
Left front speaker output
26 Dgnd
-
Digital
ground
27 Date
I
IIC
Date
28 Clk
I
IIC
Clk
ICA1 control & regulate the voltage (12Vto9V )to the ICA2
Volume signal through ICA2 pin24(right)pin25(left) into audio amplifier
ICA3
2.2 Audio amplifier:
ICA3(TDA1517) is an integrated class-B dual output amplifier ,
It contains two identical amplifier differential input stages. The gain
Of each amplifier is fixed at 20 dB.
Pins 1 and 9 are right and left channel inputs respectively. Pins 4 and 6 are
right and left channel outputs which connect to two 4 OHM speakers.
Pin 8 is the mute/stand-by
Pin 7 is the voltage input for ICA1
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4
:
ViewSonic Corporation
Confidential – Do Not Copy
VX900-2
Summary of Contents for VX900-2
Page 58: ...6 Mechanical Assembly 64 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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Page 64: ...Sechmatic Daigrams 6 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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