Kenwood KVT-719DVD Service Manual page 13

Ref. No. Application / Function
IC54 SDRAM
IC55,56 Logic IC for port extension
IC57 3ch video amplifi er
IC60 Power supply for 5.0V
Q1 Transistor with internal resistor
Q2 Transistor with internal resistor
Q3 Transistor with internal resistor
Q4 Transistor with internal resistor
Q10 Front end transistor for APC
Q11 Front end transistor for APC
Q12 Rear end transistor for APC
Q13 Rear end transistor for APC
Q14 MOS-FET
Q15 MOS-FET
Q20 MOS-FET for level shifter
Q21 MOS-FET for level shifter
Q24 MOS-FET
Q25 Transistor with internal resistor
Q27 Transistor with internal resistor
Q28 Transistor for APC
Q29 Transistor for APC
COMPONENTS DESCRIPTION
To retain data for one chip LSI (Nonvolatile memory)
For port extension
With built-in fi lter +6dB amplifi er for component/RGB video output
8V 5V (Exclusively for audio DAC)
→
LO_MUTE control
For FG signal
For BMS
DRMUTE control
Control of CD laser diode emission
Control of DVD laser diode emission
Control of CD laser diode emission
Control of DVD laser diode emission
ON/OFF control of CD laser diode
ON/OFF control of DVD laser diode
Level shifter for I2C clock
Level shifter for I2C data
For Iop measurement
IFSEL control
HFM ON/OFF control
For CD laser diode protection (Current limiter)
For DVD laser diode protection (Current limiter)
KVT-719DVD/729DVD
/729DVDY/739DVD
Operation / Condition / Compatibility
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