Denon DVM-4800 Service Manual page 39

1 2
SERVO BLOCK DIAGRAM (2/2)
IC2001 (ODC/DSC)
A
TRSDRV
67
TRTRV
114
DAC1
115
SPDRV
68
TIL TP
70
TILT
71
FG 69
FG ENB 56
IN SW
61
B
3 4
IC2501
(MOTOR DRIVE)
TRIN
26
BIAS1
VIN1
2
VIN2
3
VIN3
23
OPOUT
6
FROM LDIN
24
IC6001-27,28PIN
BIAS2
CH3
27
MUTE
CH1,2
9
MUTE
FG
SW2601
5
RF SIGNAL
LEVEL
SHIFT
-
+
LEVEL
SHIFT
+
-
-
+
LEVEL
SHIFT
-
+
LEVEL
SHIFT
-
+
6 7
MOTOR DRIVE SIGNAL TRACKING ERROR SIGNAL
VO4+
15
-
+
M2502
TRAVERS MOTOR
VO4-
16
-
+
OPIN+
4
VO3+
17
-
+
M2501
SPINDLE MOTOR
VO3-
18
-
+
OPIN-
5
OPTICAL PICK UP UNIT
IC2511-11,12,13,14
7.2Vp-p(20usec./div.)
-
VO1+ ACT T+
+ 14
VO1- ACT T-
13
-
+
VO2+ ACT F+
12
VO2- ACT F-
- 11
+
-
+
IC6001
(SUB CPU)
LD CNT TRAY/TRV
CNT 28 47
MUTE4 TRAY/MUT
CH4
20 31
MUTE
TRAY CLOSE
38
TRAY OPEN
FROM
37
P6002-1PIN
SERVO BLOCK DIAGRAM
DVM-4800
8
FOCUS ERROR SIGNAL
A
B
ACTUATOR
FOCUS
COIL
C
TRACKING
COIL
D
E
39