– 33 –
1
FIN2
I
Connects to the pickup's photo diode; adding this pin to pin FIN1 generates RF signal,
and subtracting it generates FE signal.
2
FIN1
I
Connects to the pickup's photo diode.
3
E
I
Connects to the pickup's photo diode; subtracting this pin from pin F generates TE signal.
4
F
I
Connects to the pickup's photo diode.
5
TB
I
Input for DC component of TE signal.
6
TE–
I
Connects to the resistor between this pin and TE pin for setting the gain of TE signal.
7
TE
O
Output for TE signal.
8
TESI
I
Input for TES (Track Error Sense) comparator, TE signal is band-passed and inputted.
9
SCI
I
Input for shock detection.
10
TH
I
For setting tracking gain time constant.
11
TA
O
TA amplifier output pin.
12
TD–
I
For constructing tracking phase compensation constant between TD and VR pins.
13
TD
O
For setting tracking phase compensation.
14
JP
I
For setting the amplifier of tracking jump signal (kick pulse).
15
TO
O
Output for tracking control signal.
16
FD
O
Output for focusing control signal.
17
FD–
I
For constructing focusing phase compensation constant between FD and FA pins.
18
FA
O
For constructing focusing phase compensation constant between FD– and FA– pins.
19
FA–
I
For constructing focusing phase compensation constant between FA and FE pins.
20
FE
O
Output for FE signal.
21
FE–
I
Connects to the gain-setting resistor of FE signal between this pin and FE pin.
22
A-GND
–
GND for analog signals.
23
SP
O
Single end output of CV+ and CV– pin input signal.
24
SPI
25
SPG
I
Connects to the gain-setting resistor during spindle 12cm mode.
26
SP–
I
Connects to spindle phase compensation constant together with SPD pin.
27
SPD
O
Output for spindle control signal.
28
SLEQ
I
Connects to sled phase compensation constant.
29
SLD
O
Output for sled control signal.
30
SL–
I
Input for sled-sending signal from microcontroller.
31
SL+
I
Input for sled-sending signal.
32
JP–
I
Input for tracking-jump signal from DSP.
33
JP+
34
TGL
I
Input for tracking gain control signal from DSP; gain is low if TGL = "H".
35
TOFF
I
Input for tracking off control signal from DSP; off if TOFF = "H".
36
TES
O
Outputs TES signal to DSP.
37
HFL
O
HIGH FREQUENCY LEVEL; used to determine whether the main beam is on a pit or
on a mirror.
38
SLOF
I
Input for sled servo off control.
Pin No.
Pin Name
I/O
Description
IC, LA9241ML
www.freeservicemanuals.info
9/3/2014
Global electronic heritage manuals
