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os
3. Removing the pickup
(Singapore)
1. Turn over the mechanism and short the short land of
the pickup (@).
2. Disconnect the two connectors (
@).
1. Description of components
1-1. CD PLAYER UNIT (X32-1500-11)
Use/Function
Operation/Condition/Compatibility
NJM4565D
Power Supply
For analog circuit of DAC.
NJM4565D
NJM4580D
IN Converter
Conversion of D/A converter current output into voltage from. (Refer to
D.P.A.C at page 15)
Power supply (+5V)
For oscillation (IC10), Digital filter {1C9) and HIC.
SM5813AP
Digital filter
Convert 16bit FS to 20bit 8FS.
TC74HCUO4AP
Oscillation
Oscillation master clock 16.9344MHz and applied clock signal to 1C9,11,
and 13.
IC11
CXD11650
Digital signal processor
All digital signal processing operation, Including the EFM data demodulator,
error correction, interpolation circuit, PLL, CLV, Digital output jitter free.
For 1C11,15 and 1C14 of PLL and CLV.
Bit converter
Add 2bit to 18bit DAC and 18bit to 20bit jitter free. (refer to circuit descrip
tion at page 40)
1014
NJM4565D.
PLL, CLV servo
Servo amplifier for disk motor and control VCO freq. by phase comparation
signal.
1C15
TC74HCOOAP
icio1_ | _NJMa558D
Power supply (+5V)
1C102
pPD4053BC
Defect circuit
If RF signal defect (1C104 Defection), servo circuit is open and playback goes
on.
1C103
CXA1244S
Servo signal processor
Control of focusing error tracking servo and feed servo pulses for servo
control.
1C104
CXA1081S
RF amplifier
Focusing error signal generator, tracking error signal generator, RF signal
generator and phase componsation.
NJM4558D
For motor of OPEN/CLOSE and one of UP/DOWN.
Buffer amplifier
For EFM signal to signal processor.
Amplifier
For sled drive of pickup travel.
For focus actuator drive and disk motor.
For headphone.
Power supply (+)
For analog circuit.
Q2
2SD1266
Power supply {(-)
For analog circuit.
Inter face
For emphasis and micro processor.
1a4
|
_2sci74os_
Inter face
For relay, micro processor and relay drive.
| os,6
| 28c2878
i
Switch
For emphasis.
For sample-hold circuit and inter face of clock signal.
Power suppl
When Q7, 8 are off condition, Q11, 12 are off.
2SK152
Switch
Control the gate Q7~10. If on, sample mode. If off, hold mode.
2SC3940A
Power supply (+5)
For DAC.
For digital filter {IC9).
| aie {| _2SC3940A
Power supply (+5V)
For oscillation (IC10).
2SA1534A
| Power supply (-5V)
For PLL and CLV.
2SC3940A
| Power supply {+5V}
For PLL, CLV and signal processor.
2SK246
Power supply (+5V)
_
Q20
2SA933S
Muting amplifier
Controt output of optical when power on. Buffer amplifier for optical output.
Q21
2SC733 (A)
:
3. Remove the two screws ( @), then remove the MD
assembly.
4. Remove the screw, then remove the gear (Q).
5. Remove the stopper (@).
6. Remove the pickup in the direction of the arrow(@).
Note : When installing the pickup, in the reverse order
of disassembly.
Unsolder
the short land after connecting
the
connector.
Qio1
For servo circuit.
Q102
For servo circuit.
103
For FL-indicator.
| 104 | ~~ 2SA1534A
Power supply {-30V)
For Fl.-indicator.
2SA1534A
Buffer
Drive motor of VOLUME,
2SC3940A
28A1534A
Buffer
Drive motor of tray.
8
2SC3940A
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