Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
MCD 36 / MCD 40
GRUNDIG Service
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
MCD 36 / MCD 40
LA9240MS
VCC1
LDS
LDD
BHI
PHI
LF2
VR
REF1
VCC2
NC
DRF
CE DAT CL CLK
DEF
FD– FA FA– FE FE–
AGND
SP SPI SPG SP– SPD
SLEQ
SLD
SL– SL+
JP–
FIN2
I/V
APC
VCA
REF
SLC
RF
AMP
RF DET
VCA
∝
-COM
INTERFACE
F.SERVO &
F.LOGIC
SPINDLE
SERVO
SLED SERVO
BAL
TE
T.SERVO &
T.LOGIC
FIN1
E
F
TB
TE–
TE
TESI
SCH
TH
TA
TD–
TD
JP
TO
FD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
NC
NC
NC
DGND
SLI
SLC
RFS–
RFSM
CV+
CV–
SLOF
HFL
TES
TOFF
TGL
JP+
64
63 62
61 60
59 58 57 56 55 54 53 - 50 49
17 18 19 20 2122 23 24 25 26 27 28 29 30 31 32
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
DESCRIPTION
Pickup photo-diode connecting pin. Forms RF signal by addition to FIN1 pin,and FE signal by
subtraction.
Pickup photo-diode connecting pin.
Pickup photo-diode connecting pin. Forms TE signal by subtraction from F pin.
Pickup photo-diode connecting pin.
Pin for inputting DC constituent of TE signal.
Pin for connecting gain setting resistence of TE signal to TE pin.
TE signal output pin.
TES(TRACK ERROR SENCE) comparator input pin. Band pass TE signal, and input.
Input pin for shock detection.
Constant setting pin at the time of tracking gain.
Pin for connecting high pass elimination condensor of servo.
Pin for constituting tracking phase compensation constant between TD and VR pin.
Pin for setting tracking phase compensation.
Pin for setting tracking jump signal (kick pulse) amplitude.
Tracking control signal output pin.
Focusing control signal output pin.
Pin for constituting focussing phase compenstion constant between FD and FA pin.
Pin for constituting focussing phase compensation constant between FA- and FE- pin.
Pin for constituting focussing phase compensation constant between FA and FE pin.
FE signal output pin.
Pin for connecting FE signal gain setting resistance to TE pin.
GND for analog signal.
Signal end output of CV+ and CV- pin input signal
.
Connecting pin for spindle phase compensation constant together with SPD pin.
Spindle control signal output pin.
Connecting pin for sled phase compensation constant.
Sled control signal output pin.
Input pin for sled delivery signal from micro computer.
Input pin for sled delivery signal from micro computer.
Input pin for tracking jump signal from DSP.
Input pin for tracking jump signal from DSP.
Input pin for tracking gain control signal from DSP.Gain low in case of TGL="H".
Input pin for tracking off control signal from DSP.Off in case of TOFF="H".
Output pin of TES signal to DSP.
(HIGH FREQENCY LEVEL) is used to judge whether main beam is located
above pit or above mirror.
Sled servo off control input pin.
Input pin for CLV error signal from DSP.
Input pin for CLV error signal from DSP.
RF output pin.
Pin for setting RF gain and EFM signal 3T compensation constant together with RFSM pin.
(SLICE LEVEL CONTROL) is output pin for controlling data slice level by RF waveshape DSP.
Input pin for controlling data slice level by DSP.
GND pin digital system.
For Focs Smoosing capacita output pin.
Tracking Balance control pin.
NO CONNECT.
Output pin for detecting disc defect.
Standard clock input pin. DSP 4.23MHz is input.
Micro computer command clock input pin.
Micro computer command data input pin.
(DEFECT RF) RF level detecting output.
Micro computer command chip enable input pin.
Spindle amplifier input.
Connecting pin for gain setting resistance at the time of spindle 12cm mode.
PORT NAME
FIN2
FIN1
E
F
TB
TE-
TE
TESI
SCI
TH
FIN1
TA
TD-
TD
JP
TO
FD
FD-
FA
FA-
FE
FE-
AGND
SP
SPI
SPG
SP-
SPD
SLEQ
SLD
SL-
SL+
JP-
JO+
TGL
TOFF
TES
HFL
SLOF
CV-
CV+
RFSM
RFS-
SLC
SLI
DGND
FSC
TBC
NC
DEF
CLK
CL
DAT
CE
DRF
55
56
57
58
59
60
61
62
63
64
Focs serch select pin.
VCC pin for servo system and digital system.
Connection pin for standard voltage capacitor.
Standard voltage output pin.
Pin for setting constant at the time of detecting disc defect.
Pin for connecting condensor for RF signal peak hold.
Pin for connecting condensor for RF signal bottom hold.
APC circuit output pin.
APC circuit input pin.
RF system VCC pin.
FSS
VCC2
REF1
VR
LF2
PH1
BH1
LDD
LDS
VCC1
LA 9240 MS
S-81250HG-RD
OUT
3
2
1
V
IN
V
REF
GND
S-8054HN
OUT
1
2
7
VDD
VSS
NJM2100M
V+
8
4
1,7
2,6
3,5
–INPUT
+INPUT
V–
OUTPUT
IC-Innen-Beschaltungen / IC Block Diagrams
2 - 12
2 - 11
