KDC-C519FM/C719/Y
4
CD PLAYER UNIT (X32-5470-0x)
Ref. No.
Component Name
Application/Function
Operation/Condition/Compatibility
RF amplifier built in digital servo and data processor IC. Focusing, tracking, sled
and spindle servo processing. Detection of dropout, anti-shock, track crossing and
IC1
UPD63711AGC
Servo IC
off-track conditions.
Automatic adjustment (focusing, tracking, gain, offset and balance) operations.
Digital signal processing (DSP, PLL, sub-codes, CD-TEXT decode, CIRC error
correction, audio data interpolaration) operations.
IC4
KIA78L05F
+5V AVR
Analogue output circuit power supply for D/A converter.
Focusing coil, tracking coil, spindle motor and sled motor driver.
VO1~VO4 and VOL outputs ON/OFF function.
While MUTE1 goes "Hi", VO1 outputs are turned on.
While MUTE2 goes "Hi", VO2~VO4 and VOL outputs are turned on.
VIN1 amplifier function (input selection and VREF selection)
IC5
LA6576
Motor driver
1. Input selection.
While VIN SW terminal goes "Lo", IC pin 15, 16 and 17 inputs are selected.
While VIN SW terminal goes "Hi", IC pin 15, 18 and 19 inputs are selected.
2. VREF selection.
While VIN SW terminal goes "Lo", internal VREF (2.5V typical) is selected.
While VIN SW terminal goes "Hi", external VREF (IC pin 30 input) is selected.
IC7
UPD784214GC098
Mechanism MI-COM.
Mechanism and servo control.
IC8
BR24C02F-W
EEPROM
LPS data back-up memory.
IC9
S-80830CNNP
Reset IC
When BU 5V voltage is less than 3.0V, IC outputs "Lo".
IC11
LC3564BT-70
S RAM
CD-TEXT data memory.
Q1
MCH6101
APC
Laser diode auto power control.
Q4
DTA124EK
0 bit mute (L CH.)
When 0 bit mute is activated, an emitter goes "Hi", and Q4 outputs "Hi".
Q5
DTA124EUA
0 bit mute (R CH.)
When 0 bit mute is activated, an emitter goes "Hi", and Q5 outputs "Hi".
Q6
DTC343TK
Mute SW (L CH.)
When 0 bit mute or A mute drive is activated, a base goes "Hi", and L channel audio
signal is muted.
Q7
DTC343TK
Mute SW (R CH.)
When 0 bit mute or A mute drive is activated, a base goes "Hi", and R channel audio
signal is muted.
Q8
DTA124EK
A mute drive
When audio mute of IC7 is activated, a base goes "Lo", and audio mute drive signal
is outputted.
Q9
2SB1202
Servo 5V AVR
Q9 is combined with IC5's pin 26 and 27 , and works as a driver of AVR.
Q10
2SB1295
P-ON 5V SW
While base goes "Lo", P-ON 5V is supplied to the microprocessor peripheral circuits.
Q11
DTC124EK
Reset SW
When System Reset has activated, a base goes "Hi", and Q11 is turned on.
Q13
DTC124EUA
CH CON SW
While CH CON or CH-CON2 mode is selected, a base goes "Hi", and Q13 is turned on.
Q14
DTA143EUA
CH MUTE SW
When MUTE REQUEST to H/U is outputted, a base goes "Lo", and Q14 is turned on.
Q16
2SC4081
SRV 8V AVR
Q16 is combined with Q15 (X92-), and works as a pre-driver of AVR.
Q17
DTA143EK
SRV 8V AVR SW
When Q18's base goes "Hi", Q17 is turned on, and SVR 8V AVR is working.
Q18
DTC124EUA
Q19
DTC124EUA
7/9V SW
When a base goes "Hi", Q19 is turned on, and SVR 8V AVR is outputting +7V.
When a base goes "Lo", Q19 is turned off, and SVR 8V AVR is outputting +8.5V.
Q20
DTC124EK
BU DETECTION SW
While BACKUP is applied, a base goes "Hi", and Q20 is turned on.
When momentary power down has detected, a base goes "Lo", and Q20 is turned off.
Q21
2SB1202
BU 5V AVR
While BACKUP is applied, AVR outputs +5V.
Q22
2SC4081
Q21 and Q22 are inverted Darlington connection.
COMPONENT DESCRIPTION
