Ic Pin Function Description - Sony CDP-CX57 Service Manual

7-12. IC PIN FUNCTION DESCRIPTION

• BD BOARD IC101 LA9241M (RF AMPLIFIER, FOCUS/TRACKING/SLED SERVO)
Pin No. Pin Name
1 FIN2
FIN1
2
3 E
4 F
5 TB
6 TE–
7 TE
8 TESI
9 SCI
10 TH
11 TA
12 TD–
13 TD
14 JP
15 TO
16 FD
17 FD–
18 FA
19 FA–
20 FE
21 FE–
22 AGND
23 SP
24 SPI
25 SPG
SP–
26
SPD
27
SLEQ
28
29 SLD
SL–
30
SL+
31
JP–
32
JP+
33
TGL
34
TOFF
35
TES
36
HFL
37
SLOF
38
CV–
39
I/O
Signal input (B+D) from the optical pick-up detector
I
Added with FIN1 to create RF signal, subtracted with FIN1 to create focus error signal
I
Signal input (A+C) from the optical pick-up detector
Signal input (E) from the optical pick-up detector
I
Subtracted with F to create tracking error signal
I
Signal input (F) from the optical pick-up detector
I Tracking error signal input for the tracking balance adjustment
I
Tracking error signal (invert signal) input terminal
O
Tracking error signal output terminal
TES (Track Error Sense) comparator input terminal
I
Tracking error signal is band-passed and input
I
Shock detection input terminal
I Time constant setting terminal for the tracking gain adjustment
O
TA amplifier output terminal
Creates a tracking phase compensation constant between TD (pin !£) and VR (pin %•) pins
I
O
Setting terminal for the tracking phase compensation
I
Setting terminal for the tracking jump signal (kick pulse) amplitude
Tracking coil (2-axis device) drive signal output to the LA6541 (IC103), and sled motor drive
O
signal output terminal
O
Focus coil (2-axis device) drive signal output to the LA6541 (IC103)
Creates a focusing phase compensation constant between FD (pin !§) and FA (pin !•) pins
I
Creates a focusing phase compensation constant between FD– (pin !¶) and FA– (pin !ª) pins
O
Creates a focusing phase compensation constant between FA (pin !•) and FE (pin @º) pins
I
O
Focus error signal output terminal
I
Focus error signal (invert signal) input terminal
— Ground terminal (analog system)
Single end output of the CV+ (pin $º) and CV– (pin #ª) pins signal
O
I
Spindle amplifier input terminal (invert input)
I
Gain setting resistor is connected when the spindle 12 cm mode
Works together with the SPD (pin @¶) to connect to the spindle phase compensation constant
I
O
Spindle motor (M101) drive signal output to the LA6541 (IC103)
I
Sled phase compensation constant is connected
O Sled motor (M102) drive signal output to the LA6541 (IC103)
I
Sled feeding signal input from the system controller (IC501)
I
Sled feeding signal input from the system controller (IC501)
I
Tracking jump control signal input from the DSP (IC102)
I
Tracking jump control signal input from the DSP (IC102)
I
Tracking gain control signal input from the DSP (IC102) Gain becomes low when TGL is "H"
Tracking off control signal input from the DSP (IC102)
I
Tracking becomes off when TOFF is "H"
O
Tracking error signal output to the DSP (IC102)
Tracking detection signal output to the DSP (IC102) HFL (High Frequency Level) is used to
O
determine whether the main beam is positioned on a pit or a mirror
Sled servo off control signal input from the DSP (IC102) Rough servo/phase control automatic
I
switching monitor input "H": rough servo, "L": phase servo
I
CLV error signal input from the DSP (IC102)
Function
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