Service manual

XL-HP505
4 – 3
FOCUS/TRACKING/
SPIN/SLED DRIVER
+B7
RCHO
LRVSS
LCHO
LVDD
RVDD
GND
GND
TR–
TR+
TR+
FO+
FO+
FO–
F C B A E VCC
PICKUP UNIT
TR–
VREF
MO_SPEED
CNP3
CNP5
CNP4 CNB1
CNP2
Q1
Q2
LDD VREF LDS DVDD XVDD AVDD1 AVDD2 DVDD VVDD
A
+5V
A
+5V
FIN EIN CIN AIN DIN BIN
+B8
+B8
– – + +
MO_SPEED/CONT6
MOT_A-/CONT4
TR– TR+ CAM– CAM+ +5V PHOTO DISC CLAMP TRAY_SW1
TRAY_SW2 D_GND
CD_RES
TRAY_SW2
PHOTO
D_GND
+5V A_+5V
+B4
+B8
+B8
CONT1
0.82µH
CD
DIGITAL SIGNAL PROCESSOR
LC78648E
IC1
MOT_A+/CONT5
MO_B+/CONT3
MO_B-/CONT2
SLDO
SPDO
FDO
TDO
XIN
XOUT
DRF
*RES
*WRQ
DO
DI
CL
CE
FROM DISPLAY SECTION
TO MAIN SECTION
D_GND
16.9344 MHz
XL1
+B4
R-CH
AGND L-CH
DGND
D_+5V
WRQ DRF CE DO DI CL CLAMP DISC
TRAY_SW1
+8V
M
M
34 33810 3231 2421
22 23 19 20
5
1
2
35 36
3
4 5 6
30 26
7
25 27
9
28
11 13 15 17
48 47 79 61 56 55 54 154046 28 25
19 20
26
13 49
1
27 60
80
7
8
9
10 15 14
36 21 22 23 24
65 64 66 67 68 63 62 45 41 42 43 44
1 2 3 5 4 6 7 8
1 2 3 4 5 6
13 12 11 10
9 8 7
14
1 2 3 4 5 6 7 8 9
10
11
1 2 3 4 5 6 7 8 9
10
11
6 4 3 1
35 36 70 74 75
2
VCONT6
VCONT5
VREFIN
SVCC
PVCC1
VO4– VO3+ VO3– VO4+
PGND1
SGND
PGND2
VO1– VO1+ VO2– VO2+
VIN2 VIN1 VIN4 VIN3
VO6+
VO6–
VO5+
VO5–
LA6261
IC2
REV5
FWD5
REV6
FWD6
PVCC2
SLED
MOTOR
SPINDLE
MOTOR
PICKUP-IN
–
+
–
+
M
M
TRAY
MOTOR
DISC
CLAMP
TRAY SW1
TRAY SW2
MAIN CAM
MOTOR
PHOTO INTERRUPTER
SW1A
M1A
M2A
M1
RX1
SW3
SW2
SW1
SW4
M2
Figure 4-3 BLOCK DIAGRAM (3/3)