Denon UD-M31, Service Manual

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16
16 UD-M31
LA9241M(IC802)
LA9241M Terminal Function
Pin No. Symbol Contents
1 FIN2
Pickup photodiode connection pin. Added to FIN1 pin to generate the RF signal, subtracted from FIN1 pin to generate
the FE signal.
2 FIN1 Pickup photodiode connection pin.
3 E Pickup photodiode connection pin. Subtracted from F pin to generate the TE signal.
4 F Pickup photodiode connection pin.
5 TB TE signal DC component input pin.
6
TE
-
Pin which connects the TE signal gain setting resistor between this pin and TE pin.
7 TE TE signal output pin.
8 TESI TES (Track Error Sense) comparator input pin. The TE signal is input through a bandpass filter.
9 SCI Shock detection input pin.
10 TH Tracking gain time constant setting pin.
11 TA TA amplifier output pin.
12
TD
-
Pin for configuring the tracking phase compensation constant between the TD and VR pins.
13 TD Tracking phase compensation setting pin.
14 JP Tracking jump signal (kick pulse) amplitude setting pin.
15 TO Tracking control signal output pin.
16 FD Focusing control signal output pin.
17
FD
-
Pin for configuring the focusing phase compensation constant between the FD and FA pins.
18 FA Pin for configuring the focusing phase compensation constant between the FD- and FA- pins.
19
FA
-
Pin for configuring the focusing phase compensation constant between the FA and FE pins.
20 FE FE signal output pin.
21
FE
-
Pin which connects the FE signal gain setting resistor between this pin and FE pin.
22 AGND Analog signal GND.
23 NC No connection
24 SP CV+ and CV- pins input signal single-end output.
25 SPG 12-cm spindle mode gain setting resistor connection pin.
26
SP
- Spindle phase compensation constant connection pin, along with the SPD pin.
27 SPD Spindle control signal output pin.
28 SLEQ Sled phase compensation constant connection pin.
29 SLD Sled control signal output pin.
30
SL
-
Input pin for sled movement signal from microprocessor.
31
SL
+
Input pin for sled movement signal from microprocessor.
NC
TBC
FSC
DGND
SLI
SLC
RFS
RFSM
CV
CV
SLOF
HFL
TES
TOFF
TGL
JP
FD
FA
FA
FE
FE
AGND
NC
SP
SPG
SP
SPD
SLEQ
SLD
SL SL
JP
FIN2
FIN1
E
F
TB
TE
TE
SCI
TH
TA
TD
TD
JP
TESI
TO
FD
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VCC
1
LDS LDD BH1 PH1 LF2 VR
REFI
VCC
2
FS
S
DRF CE DAT CL CLK DEF
-
-
+
- -
-
- - -
+
-
+
-
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 55 56 57 58 59 60 61 62 63 64
APC
RF DET
REF
I/V
VCA
VCA BAL
-com
INTER FACE
T. SERVO & T.LOGIC
F.SERVO & F.LOGIC
SPINDLE
SERVO
SLED SERVO
TE
SLC
RF Amp
FIN2
FIN1
E
F
TB
TE
TE
SCI
TH
TA
TD
TD
JP
TESI
TO
FD
-
-
FD
FA
FA
FE
FE
AG
ND NC
SP
SPG
SP
SPD
SLEQ
SLD
SL SL JP
+
-
-
-
- -
-
NC
TBC
FSC
DGND
SLI
SLC
RFS
RFSM
CV
CV
SLOF
HFL
TES
TOFF
TGL
JP+
-
+
-
VCC
1
LDS LDD BH1 PH1 LF2 VR REF
I
VCC
2
FSS DR
F
CE DAT CL CLK DEF