Kenwood KACPS 811 D Service Manual
This is the 24 pages manual for Kenwood KACPS 811 D Service Manual.
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Extracted text from Kenwood KACPS 811 D Service Manual (Ocr-read)
Page 2
KAC-PS811D/X811D
BLOCK DIAGRAM
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RESET ROM ACCRESS
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COMPONENTS DESCRIPTION
0 PREAMPLIFIER UNIT (X08-4170-10)
SP OUT
P CON
BATT
GND
Rel. No Application / Function Operation / Condition / Compatibility
IC1 ISF Cutting super-low range of audio signal
IC2 (1/4~3/4) BRF Cutting bandwidth of audio signal
IC2 (4/4) INV Phase reversal of audio signal
IC3 OP amplifier Voltage amplification, Buffer
IC4 E-VOL Electronic volume
ICS LPF Cutting high-range of audio signal
IC6 LCD driver LCD driver
0 AUDIO UNIT (X09-5790-10)
Rel. No Application / Function Operation / Condition / Compatibility
IC1 Isolation amplifier Prevent noise from GND potential difference
IC2 (1/2) Triangular wave generation Reference signal for digitizing analog signal
IC2 (2/2) Error amplifier Error is compensated by the feedback from output
IC3 Comparator, Triangular wave generation Digitizing by comparison of analog signal and triangular wave