Servo Circuit Waveforms - Sanyo VHR-757G Service Manual

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J
|
F SERVO CIRCUIT WAVEFORMS
4 TEST LOCATION
WAVEFORM & MODE/LEVEL TEST LOCATION
WAVEFORM & MODE/LEVEL
sini
SLOW PB
a
REC
|
= (H.A.SWITCHING)
jo—_—+—— ot
(CTL PULSE)
}~-—__—_»}2——>
ALWAY
20msec 20msec 24msec 16msec GN
PB !
G
Pin 15
oe eat a
5.0V
5.0V
T
CTL PULSE
B.66KHz | ( Vacee
i REC
Pin 41, 44, 1
Pin 21
6V
PLT tH Ths
(PWM)
(CTL HEAD-)
F
69.27KHz a
24msec 16msec
Ch
Pin 3
at Pin 22
ALWAY
IF
FSC INPUT
eae CTL HEAD:
|
+
(
4.43MHz *
5
PB ;
Pi Pin 26
E in 5 5 OV in
(ROTARY) See mar (CTL AMP OUT)
20msec 20msec
L 2msec
= .
Pin8 Pin 28
m0
yf A f f 2.5V
oe
VUE
OmVp-p
D-PG MM C-FG INPUT
D
(
aecan
ac {
0.66msec
Pin 9 S71 fw Pin 29
7 (RF SW PULSE) }+——>}0——>} f (D-FG INPUT)
20msec 20msec 1.33msec
Cc Pin 10 ee Pin 30
n
5.0V in = apa ome | [e5omve-p
(AF SW PULSE) }~—_——> (D-PG INPUT)
20msec 20msec 40msec
=
SLOW PB
B (COMPOSITE
-— 4.2V
(ENV.SW INPUT)
zy
SYNC INPUT) T=20msec 20msec 20msec
P Pin 14 7] PDs
C-FG PULSE }+——+
( 1513Hz +
A
WF-S-TP4
1
3 4
5 6
7 8