Reel Drive Block Diagram - Panasonic AG-MD830E Service Manual

REEL DRIVE BLOCK DIAGRAM
P2901 P2702
Il l . ..
S-REEL YM
,.
[
1 1
,.
DC-DC
Ill... P2901 P2702 T-REEL YM
3 3
,.
S REEL RSF
T REEL RSF
S REEL FT
TREELFT
VREF
TQV
~~~~~~"----------------1-~~-t-+-+----~~--t-t----O+5V
f-='-f-----_----~rrY"'---_v_o 12V
CHANGE
S-REELFB
T-REEL FB
S REEL FO
TREEL FO
SF PHOTO
+5V
TO
~ SOLENOID
SF PHOTO
~
~
SR PHOTO
IC2706 (1/2)
8 ,..
.~
...
P2501 P2701
,.
[
"11
11 11
SERVO
...
P2501
P2701
"11
8
8
SF PHOTO
SR PHOTO
IC2705 (AMP)
r
~----t-:i8
10
IC2703 (AMP)
6 (112)
SUPPLY FWD SENSOR
r------,
I
!D~
!
I
tG\ :
I
~'" ~:
L ______
.J
r-------,
I
5V
! 0 -()
1
I tG\
I
:
~'"
m:
L ______
.J
SUPPLY REV SENSOR
- - - - - - - - - - -
14
13
QR2701
r::-.!.2...,
I.--'VVIr-~:£.:Jkl
r _
h
5
IC2704 (1/2)
24
+5V
+5V
24 20 23 19 15
r-1
RIPPLE
Il
TORQUE
L
CANCELLER CONTROL
~~~ ~~~
k1
I
DIFFERENTIAL AMP DIFFERENTIAL AMP
I-<
~
r-
• • .=--
-......r
POSITION SIONAL
I
TORQUE DIRECTIONJ
CONTROL
I
IC2701 f3
+5V
I
IC2702
(T REEL DRIVE)
20 23
PRDCESS
5 8 7 8 9 10
+5V
19 14
+
12
16
l
TORQUE
I
CONTROL
~~~ ~~ ~
k1
r:~L
I
DIFFERENTIAL AMP DIFFERENTIAL AMP
1--<"
~ r-H~~---+------'
15
• • .=--
' T
.1
I
~
U
TORQUE DIRECTION
I
POSITION SIONAL
L
CONTROL
PROCESS L-______________
--J-*
I
13
2 5 6 7 8 9 10 12 ' -_____ -+-1.:..1 - ,
,
,IP
11
VFO+
VFG-
IC2705 (AMP)
/ . FO-
2..-/
+1-:
5 ,....."""-----"--
L -____________ ~~--~
~
_ FO+
(1/2) """
f-
4
,.--'w,----
I
Q2701 (REO)
+5V
I 1-
,
I
I
.I..
Ml
M2
M3
VFO+
VFO-
IC2705 (AMP)
1 / + 7
FO-
(1~6
FO+
I