Flash Rom - Kenwood KVT-727DVD Service Manual

KVT-727DVD/727DVDY
Ref. No. Application / Function
IC10 DIR
IC11 OP amp
IC12 Analog switch
IC18 Logic IC
IC19 3-terminal regulator
IC20,21 3-terminal regulator
Q13 Digital transistor
Q14,15 Transistor for audio muting
DVD UNIT (X37-1070-00)
Ref. No. Application / Function
IC1 RF signal processing IC
IC2 Driver
IC3

FLASH ROM

µ-com built-in optical DISC control IC
IC4
IC5 Voltage detection IC
IC8 Voltage detection IC
IC9 S1.5V power supply IC
IC10 S3.3V power supply IC
IC11 EEPROM
Q1 MOS-FET
Q2 MOS-FET
Q7 APC transistor
Q8 APC transistor
Q9 MOS-FET
Q10 MOS-FET
Q11 Resistor built-in transistor
Q12 Resistor built-in transistor
Q13 Resistor built-in transistor
Q14 Resistor built-in transistor
14
COMPONENTS DESCRIPTION
Conversion of S/PDIF format data to digital audio format
For audio signal amplification (Front)
Switching audio signal (Sub-woofer) and A4V
Inverter for generating clock
1.25V his output from 3.3V
3.3V is output from 5V
Comes ON at the time of momentary power down, resetting, and in audio muting timing
Comes Mute at the time of momentary power down, resetting, and in audio muting timing
RF signal processing
Driver for motorists/pickup actuators
FW maintenance for optical DISC control IC
Optical DISC control in general/ATAPI interface
For reset of optical DISC control IC
For monitoring power supply voltage
S5V → S1.5V
S5V → S3.3V
Data storage for optical DISC control IC
DVD laser diode ON/OFF control
CD laser diode ON/OFF control
CD laser diode light emission amount control
DVD laser diode light emission amount control
For CD laser diode protection
For DVD laser diode protection
LO-MUTE signal control
FG signal control
BMS signal control
DRMU signal control
Operation / Condition / Compatibility
Operation / Condition / Compatibility