Pin
No.
Mark
I/O
Division
Function
19
RVDD 1
I
Power supply to internal
DRAM
20
RVSS 2
—
GND to internal DRAM
21
FODP
O
Focus drive (+) PWM signal
output terminal
22
FODM
O
Focus drive (-) PWM signal
output terminal
23
SPDP
O
Spindle drive (+) PWM
signal output terminal
24
SPDM
O
Spindle drive (-) PWM
signal output terminal
25
LDON
O
Laser power control output
terminal (1:ON, 0:OFF)
26
PVPP
DRAM1
—
Monitor to internal DRAM
output terminal (Not used,
open)
27
IVDD 0
—
Power supply terminal for I/
O pad
28
DVDD 0
—
Digital power supply
29
XI
I
Crystal oscillator input
terminal (F=16.9344MHz)
30
DVSS 0
—
Digital GND
31
XO
O
Crystal oscillator output
terminal (F=16.9344MHz)
32~34
STP10~STP12 I
Stepping motor status
input terminal (0~2)
35~37
STP00~STP02 O
Stepping motor drive
signal output terminal (0~2)
38 RFSWHL
O
Laser power control output
terminal (PIT/GRUVE
switching)
39 RFSWPG
O
Laser power control output
terminal (Reflectance
switching)
40
PEFMS
I
EFM signal input terminal
41 EFMPLLF
O
EFM PLL filter output
terminal
42
PEFM1
O
Loop filter terminal for
EFM data slicing (Not
used, open)
43
EFMFIL
O
Input filter switching for
EFM data slicing terminal
44 EFMIREF
I
Reference current setting
terminal for EFM PLL
47
Содержание SJ-MJ88
Страница 6: ...Fig 1 Fig 2 4 2 Grounding for electrostatic breakdown prevention 1 Human body grounding 6 ...
Страница 9: ...9 ...
Страница 10: ... Check the P C B as shown below 10 ...
Страница 11: ...5 2 Replacement for the lock unit open knob and intermediate cabinet Follow the Step 1 Step 3 of item 5 1 11 ...
Страница 12: ...12 ...
Страница 13: ...13 ...
Страница 14: ...14 ...
Страница 16: ...5 4 Replacement for the traverse motor Follow the Step 1 Step 3 of item 5 1 16 ...
Страница 17: ...17 ...
Страница 18: ...18 ...
Страница 19: ...19 ...
Страница 21: ...21 ...
Страница 22: ...22 ...
Страница 23: ...23 ...
Страница 24: ...24 ...
Страница 30: ...Fig 9 30 ...
Страница 34: ...34 ...
Страница 35: ...35 ...
Страница 36: ...36 ...
Страница 37: ...37 ...
Страница 38: ...38 ...
Страница 39: ...39 ...
Страница 40: ...40 ...
Страница 41: ...8 Schematic Diagram Notes 8 1 Type Illustration of IC s Transistors and Diodes 41 ...