Sanyo CDF-R800 Service Manual page 13

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CIRCUIT OPERATION DESCRIPTION
LA9240MS
#
PIN PORT NAME
DESCRIPTION
1 FIN2 Pickup photo-diode connecting pin. Forms RF signal by addition to FIN1 pin,and FE signal by
subtraction.
2 FINI Pickup photo-diode connecting pin.
3
E
Pickup photo-diode connecting Din. Forms TE sianal bv subtraction from F Din.
4 F Pickup photo-diode connecting pin.
5
TB Pin for inputting DC constituent of TE signal.
6
TE-
Pin for connecting gain setting resistance of TE sianal to TE Din.
7 TE
TE signal output pin.
8
TESI
TES(TRACK ERROR SENCE) comparator input pin. Band pass TE signal, and input.
9
Scl Input pin for
shock detection.
10
TH
Constant setting pin at the time of tracking gain.
of servo.
1 1
I 12 TD- 1 Pin for constituting; tr~ckina Dhase compensation constant between TD and
VR Din.
11
TA I Pin for connect~a hiah ~ass elimination condensor
~.
13 TD Pin for setting tracking ph;se compensation.
14 JP Pin for setting tracking jump signal (kick pulse) amplitude.
15 TO Tracking control signal output pin.
16
FD Focusing control signal output pin.
17 FD- Pin for constituting focussing phase compensation constant between FD and FA pin.
18 FA Pin for constituting facussing phase compensation constant between
FA- and FE- pin.
19 FA- Pin for constituting focussing phase compensation constant between
FA and FE pin.
20
FE
FE signal output
pin.
21 FE- Pin for connecting FE signal gain setting resistance to TE pin.
22 AGND
GND for analog signal.
23 SP Signal end output of CV+ and CV- pin input signal.
24 SPI Spindle amplifier input.
25
SPG Connecting pin for gain
setting resistance at the time of spindle 12cm mode.
26 sP- Connecting pin for spindle phase compensation constant together with SPD pin.
27 SPD Spindle control signal output pin.
28
SLEQ Connecting pin for sled phase compensation constant.
29 SLD
Sled control signal output pin.
30
SL- Input pin for sled delivery signal from micro computer.
31 SL+ Input pin for sled delivery signal from micro computer.
32 JP-
lnDut Din for trackina iumD signal from DSP.
33 JO+ Input pin for trackin~
~umpsi~nal from DSP.
34
TGL Input pin
for tracking gain control signal from DSP.Gain low in case of TGL=''H".
II from DSP.Off in case of TOFF=''H".
35
TOFF Input pin for tracking Gff control signs
36 TES Output pin of TES signal to DSP.
37 HFL (HIGH FREQENCY LEVEL) is used to judge whether main beam is located
above pit or above mirror.
38
SLOF Sled servo off control input pin.
39 cv-
Input pin for
CLV
error signal from
DSP.
40 Cv+ Input pin
for CLV
error signal from
DSP.
41 RFSM
RF output pin.
42 RFS- Pin for setting RF gain and EFM signal 3T compensation constant together with RFSM pin.
43 SLC (SLICE LEVEL CONTROL) is output pin for controlling data slice level by RF waveshape DSP.
44 SLI Int)ut
Din for controlling data slice level bv I?@D
,––-,–
J-r .
45
GND pin digital syste;.
.
DGND
46 FSC
For Foes Smoosing capacita output pin.
ZrT
TBC [ Tracking Balance control pin.
I
NO CONNECT.
andard clock input pin. DSP 4.231
51 CL I Micro computer command clock input pin.
48 NC
49 DEF Output pin for detecting disc defect.
50 CLK
St:
IMHZ is input.
52 DAT
put pin.
1
53 CE
I Mic '
r
I Micro commter command data in
:ro computer command chip enable input pin.
t 541
DRF
I [DEFECT RF) RF level detecting output.
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