Components Description - Kenwood KDC-MP925 Service Manual

SUB CIRCUIT UNIT (X16-2080-10)
Ref No. Application / Functions
IC1 E2PROM
DISPLAY UNIT (X16-2530-11)
Ref No. Application / Functions
IC1 Panel microprocessor
IC2 ROM IC
IC4 AVR
IC5 AVR
IC6 Buffer IC
IC7 Buffer IC
IC8 Remote control IC
IC9 Logic IC
IC10 Analog IC
Q1 3.3V Regulator
Q2 2.5V Regulator
Q3,4 FL +B SW
Q5 3.3V SW
Q6,200 FL 3.3V SW
Q7,8 Remote control ON SW
Q9 FL BLK SW
Q11 Red LED SW
SWITCH UNIT (X16-2560-10)
Ref No. Application / Functions
Q1 DSI LED SW
Q2 KEY Illumination SW (Green)
Q3 KEY Illumination SW (Red)
Q4 KEY Illumination SW (Blue)
CD PLAYER UNIT (X32-5540-00)
Ref No. Application / Functions
IC1 Mechanism control microprocessor
IC2 DSP
IC3 Decoder IC
IC4 BTL driver
IC5 AVR
IC6 AVR
IC7 AVR
IC8 Selector IC

COMPONENTS DESCRIPTION

E2PROM for security
Panel control microprocessor
Graphic ROM
For 3.3V power supply
For 2.5V power supply
Level shift buffer IC (5V 3.3V)
Level shift buffer IC (3.3V 5V)
For Remote control sensor
Control for FL contrast
Spectrum analyzer IC
While PAN5V is applied when 3.3V regulator output is +3.3V
While PAN5V is applied when 2.5V regulator output is +2.5V
FL +B (VDD1) is turned on when Q3 base level goes H
SW3.3V is turned on when Q5 base level goes L
FL +3.3V (VDD1) is turned on when Q200 base level goes H
The power supply of IC8, 10 is turned on when Q10 base level goes H
VFD is turned on when Q9 base level goes H
Red LED is turned on when Q11 base level goes H
DSI LED blinks when Q1 base level goes H/L
KEY Illumination SW "ON" when the Q2 base level goes H
KEY Illumination SW "ON" when the Q3 base level goes H
KEY Illumination SW "ON" when the Q4 base level goes H
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CD signal processor, RF amp, Servo control
MP3/WMA decoder
Focus, Tracking coil, Feed and Spindle motor driver IC
SW3.3V AVR
BU3.3V AVR
BU2.5V AVR
Serial audio data selector
KDC-MP925/W8027
Operation / Condition / Compatibility
Operation / Condition / Compatibility
Operation / Condition / Compatibility
Operation / Condition / Compatibility
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