Table of Contents
Advertisement
Check the initial operation
(Power-on state)
Sled move to inside.
Spindle motor rotate.
Laser On.
Focus up / Down.
Laser Off / Spindle Stop.
2 times iteration
Spindle
Motor
STEP Motor
U
V
W
HB
HU+ , HU-
HV+ , HV-
HW+ , HW-
Check the Spindle signal
•
Check FG input
•
Check the Hall signal
•
(pin 1, 2, 3, 4, 5, 6 of IC501).
Check the Laser.
Check the operation of Focus
(From pin 1 of CN402)
Optical
/SL EDIN_SW
Pick-up
KRS-340B
34
35
9
B-
B+
11
18
7
BD7907FS
,
1
2
,
3
4
,
5
6
(pin 24 of IC501 : SPIN).
(pin 20 of IC101).
IC 401
MT1516
104
ALPC
General port use
101
36
37
22
CTL1
A-
A+
CTL2
IC 501
6Ch Servo
DRIVE
• Check the operating signal of Sled
(pin 28, 29 of IC501 : SLIN1, 2).
• Check the output signal of Sled
(pin 34, 35, 36, 37 of IC501).
• Check /SLEDIN_SW.
(pin 104 of IC401).
• Check the control signal of Driver
IC(pin 22, 23 of IC501).
• Check the power of DRIVE IC
and VC.
Check SCLK, SDATA, XLAT
(pin 122, 123, 124 of IC401).
SCLK
122
SDATA
123
XLA T
124
102
23
28
SLIN1
29
SLIN2
24
SPIN
21
FG
1.4 V
27
VC
65
63
62
IC 101
MT1518
DSP
I / F
Micro
Processor
26
FMO
27
FMO2
25
DMO
20
FG
53
Advertisement
Table of Contents
