Advertisement
DP-7010
CIRCUIT DESCRIPTION
1. Description of components
1-1, OPERATION UNIT (X25-3510-01}
Ref. No.
Part No.
Use/Function
Operation/Condition/Compatibility
1C1
LB1433N
| Level meter IC
FL tube level indicator driver.
rai
2SC3666
Ripple filter
+5.6V regulated power supply.
Q2~6
DTC124EN
Digital transistors
Level indicator selection switch.
Q7~11
2S$C1740S(Q,R}
Drivers
Drivers of grids G2, G3, G4, G5 and G8.
Q12~15
2SC1740S(Q,R)}
Orivers
1-2. CONTROL CIRCUIT UNIT (X29-1890-05)
Drivers of each mode lamp.
Part No.
Use/Function
Operation/Condition/Compatibility
C1
CXA1081M
RF amplifier
Generation of focus error signal, generation of tracking error signal,
generation of RF signal and its phase compensation, and auto asymme-
try correction.
2SA1426
LD switch
Laser diode B line supply switch.
2SC945(AQ,P)
FE switch
—T Focus error amplifier bias selection switch.
1-3. CD PLAYER UNIT (X32-137X-XX)
0-11: ,P
0-21: U,M,UE
2-71: X,T.E
Ref. No.
Part No.
Use/Function
Operation/Condition/Compatibility
ICt
TC74HCOOP
Digital out driver
Digital output buffer amplifier, and power ON/OFF reset signal genera-
tion.
1€2,3
NJM4565D
LV conversion
(1/2) : Conversion of D/A converter current output into a voltage form.
(2/2) : Headphone amplifier.
IC4
NJM4565D
Operation amplifier
(1/2) : Roh 20kHz LPF.
(2/2) : Reh output buffer amplifier.
1c5
NJM4565D
Operation amplifier
(1/2) : Leh 20kHz LPF
{2/2) : Lch output buffer amplifier.
Icé6
M5218P
Operation amplifier
Error amplifier of +12V regulated power supply.
IC7,8
PCM58P
O/A converter
Conversion of 18-bit digital data into an analog form.
Ico
M§218P
Operation amplifier
{1/2) : Error amplifier of -12V regulated power supply.
{2/2) : Error amplifier of +5V regulated power supply.
1C10
CXA1244S
Servo IC
For each of focus, tracking and sled servo controls.
Ic11
~ | NUM4558D
PLL
(1/2) : The phase comparison signal from pin 11 (PDO) of the digital signal
processing LSI (CXD1125Q2Z) is input in try state, and this !C
controls the varicap voltage by that output.
CLV servo
(2/2) : This IC controls the disc motor speed by four outputs MON, MDP,
MDS and FSW of the digital signal processing LSI (CXD1125Q2).
MON ..... Disc motor ON/OFF
Disc motor rough control and phase control
|
Disc motor speed control
FSW.....
Disc motor filter time constant selection
IC12
M5218P
Operation amplifier
Error amplifier of +5V regulated power supply (for IC19 (D.P.A.C)).
IC13
TC74HCO4P
Clock pulse oscillation
Generation of master clock pulse (16.9344MHz).
C14
| SM5813AP
Digital filter
8x over-sampling (18-bit).
IC15
NJM4558D
Operation amplifier
(1/2) : Tray OPEN/CLOSE voltage control.
|=
(2/2) : Focus actuator phase compensation amplifier.
IC16
wPD75212ACW-052
| Microprocessor
Display, each key input process and servo IC control.
(C18
CXK5816SP-15L
Static RAM
EFM demodulation data time axis correction 16K S-RAM.
{C19
TC17G008AF-8060
O.P.A.C
|_ Digital Pulse Axis Control (Refer to page 42.}.
1C20
CXD11250
Digitat signal processing IC
Bit clock pulse regeneration by EFM-PLL circuit, EFM data demodula-
C€XD11250Z
tion, and frame sync signal detection, protection and interpolation.
1C22
NJM4558D
Operation amplifier
(1/2) ; Electrically driven VR up/down voitage generation.
190) . Trasking actustar deve bother
13
14
DP-7010
CIRCUIT DESCRIPTION
Ref. No.
Part No.
Use/Function
Operation/Condition/Compatibility
Qi
288941
| Driver
Focus actuator drive current booster.
Q2
| 2SC3940A
Driver
| Focus actuator drive current booster.
Q3
2SD1266(Q,P)
Driver
Disc motor drive current booster.
Q4
2SA1534A
Driver
Disc motor drive current booster.
a5
DTC124EN
Switch
Controls the bias switch of the focus error signal by signal SENS, and also
controls the focus gains FS3 of the servo IC.
a6
2SK246(Y,GR)
Switch
Controlled by the defect control switch (Q8). When flaw is detected, 06
turns OFF to open the focus servo loop.
|
Q7
2SK246(Y,GR}
{ Switch
Controlled by the defect control switch (Q8) in the same manner as Q6.
When flaw is detected, Q7 turns OFF to open the tracking servo loop.
as
2SA733(AN(Q,P)
Switch
Controls the defect detection switch, and the switches Q6 and Q7 for
2SA933S(Q,R)
focus and tracking errors.
When flaw is detected : OFF, At normal play : ON
(Inverted logic of signal DEFECT)
ag
2SC945(A}(Q,P)
; Switch
Inputs the tracking error signal to pin ATSC (anti-shock) through BPF to
28C€1740S(Q,R)
prevent sound jump due to shock by external disturbance.
Q10
2SA733(ANQ,P)
Power supply
FL tube reference voltage supply {(-30V).
2SA933S(Q,R)
Qi1
2SA1534A
Power supply
FL tube reference voltage supply (-30V).
|
Q12
2SA733(A)(Q,P)
Power supply
-5V digital power error amplifier.
2SA933S(Q,R}
Q13,14
2SA954(L,K)
Ripple filter
For -5V regulated power supply.
Q15,16
2SC945(ANQ, P)
Reset
Power ON/OFF reset pulse generation.
2SC1740S(Q,R)
Q17
2SA733(AQ,P)
Switch
Output muting relay driver.
Q18
2SC2003(L,K)
i Ripple filter
For +12V regulated power supply.
Q19
2SC2003(L,K)
} Oriver
Headphone amplifier driver (Lch).
|.a20 | 2scz003(L.K)
| Driver
|
Headphone amplifier driver (Roh).
Q30
2SA954(L,K)
Ripple filter
For -12V regulated power supply.
Q31
2SC3666
Driver
Electrically driven VR current booster.
Q32
2SA1426
Driver
Electrically driven VR current booster.
033,34
2S8C2878(B)
Switch
De-emphasis switch, which is controlled by digital transistor Q35.
{De-emphasis "'H" : ON)
Q35
DTA124EN
Digital transistor switch
Controlled by pin 14 of microprocessor. {At emphasis : ON)
Q36
2SB722(Q,P,E)
| Ripple filter
For +5V regulated power supply.
Q37
2SC2003{L, K)
Ripple filter
For +5V regulated power supply (for D.P.A.C).
Q38
| 2SD1266(Q,P)}
i Ripple filter
For +5V regulated power supply.
a39
2SD1266(Q,P)
i Ripple filter
For +7.5V regulated power supply.
2SC2003iL,K}
| Ripple filter
For -12V regulated power supply.
Q41
STA341M
Driver
(1/3) : Tray motor driver.
!
(2/3) : Feed motor driver.
(3/3) : Tracking coil driver.
Advertisement
