KDC-C467/Y/FM/FMA,C667/Y
3
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
IC1
UPD63711AGC
Servo IC
crossing and 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.
IC5
LA6576
Motor driver
VIN1 amplifier function(input selection and VREF selection)
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
UPD784214GC091
Mechanism MI-COM. Mechanism and servo control
BR24C02F-W
or CAT24WC02JI
IC8
or M24C02WMN6T
EEPROM
LPS data back-up memory
or S-24C02BFJA
or 24LC02BT-ISN
IC9
S-80830ANNP
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.
When audio mute of IC7 is activated, a base goes "Lo", and audio mute
drive signal is outputted.
Q9 is combined with IC5's pin 26 and 27 , and works as a driver of AVR.
While base goes "Lo", P-ON 5V is supplied to the microprocessor peripheral circuits.
When System Reset has activated, a base goes "Hi", and Q11 is turned on.
While CH CON or CH-CON2 mode is selected, a base goes "Hi", and Q13 is turned on.
When MUTE REQUEST to H/U is outputted, a base goes "Lo", and Q14 is turned on.
Q16 is combined with Q15(X92-), and works as a pre-driver of AVR.
When Q18's base goes "Hi", Q17 is turned on, and SVR 8V AVR is working.
Q19
DTC124EUA
7/9V SW
When a base goes "Hi", Q19 is turned on, and SVR 8V AVR is outp7V.
When a base goes "Lo", Q19 is turned off, and SVR 8V AVR is outp8.5V.
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 o5V.
Q22
2SC4081
Q21 and Q22 are inverted Darlington connection.
Q30
DTC114YUA
Eccentric disc SW
When an eccentric disc is detected, Q30 is turned on, and a preceding
beam is made to be delayed.
Q31
DTC124EUA
VIN SW
While spindle servo or disc loading/eject mode is selected, a base goes "Hi",
and Q31 is turned on.
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CD PLAYER UNIT (X32-5090-0X)
COMPONENT DESCRIPTION
www. xiaoyu163. com
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