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3 . 2
GENERAL I N FORMATIONS
3 . 2 . 1
Connections
Note:
Unless otherwise specified, only signal input flow is
indicated.
Connection arrows indicate only signal outputs.
: Connector
: D irect connection
: Board in connector
: Connected pattern in the board .
Abbreviations
V : Video
S : Servo
VS : Signal flow from
video to servo.
3 . 2 . 2
Indications
AUX : Active only at hig h .
AUX : Active only a t low.
AUX : Active only at middle.
AUX : Active only at open.
@ E§
� - - :
@ �
�
: Low pass filter.
G
: High pass filter.
�
: Band pass filter.
: Limiter.
CE]
: Detector
[fil
: Amplifier.
ill
: Mixer stage.
3-2
R egulator
R
M : Mechacon
A
: Audio
�
ctive only at low for
electronic switch .
Active only a t high for
electronic switch .
3 . 2 . 3
Digital transistor
Note:
The digital transistor includes built in resistors.
It features small size and high reliability.
Both PNP and NPN types are available.
Uses:
I nverter, Interface, driver circuits.
3 . 2 . 4
Siganl flow in the schematic
..
�
Recording signal path
c::>
Playback signal path
REC /PB signal path
3 . 2. 5
Schematic diagram values
U n less otherwise s
1 . All resistanE�_values are i n ohms, 1 /6 W , 1 /8 W , (refer
to parts l i st) .
2 . All c apacitance values are i n µF, (P; P F ) .
3 . All inductance values a r e i n µ H , (m; m H ) .
4 . All diodes are 1 SS 1 33 o r MA 1 65, (refer to parts list ) .
5. Voltages a r e DC-measured (reference to groun d ) with a
digital voltmeter during recording (SP model and playback
(SP mode) w ith a lignment tape. Where voltages differ
between recording and playback, the voltage during
playback is shown i n parentheses.
6. Waveforms (VIDEO System) are measured (reference to
g rounq) w ith a color bar during recording (SP mode) and
playback (SP mode) w ith alignment tape.
7.
Waveforms (AUDIO System) are measured (reference to
ground) with 1 kHz ( - 8 dBs) during recording and
playback w ith alignment tape ( 1 kHz ) .
8 . S haded (
parts are critical for safety.
Replace only with specified parts numbers.
DTA1 1 4T
T mark only
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