Table of Contents
Advertisement
6.3
DC voltage block diagram
DC VOLTAGE
DIAGRAM (Unit: Volt)
17.3V
@
@
(41.7 V)
iJ
Power trans.
6.4
MPX filter
Apply a signal of 400 Hz-20 dB to the LINE IN terminals and adjust the RECORD
LEVEL control until an output
of -2:5 dB is obtained from the LINE OUT terminals (with the OUTPUT
LEVEL control at maximum). Then apply
a signal of 19 kHz -20 dB to the LINE
IN terminals and adjust L502 for minimum output.
600 2
600 2
LINE IN
LINE OUT
6
=
6.5
Bias oscillator frequency
Connect a frequency counter to the terminals of the erase head and adjust the oscillator block to an oscillating
frequency of 80 kHz + 5 kHz.
Erase Head
Counter
6.6
Head azimuth
Play back the test tape (MTT-114) and adjust for maximum output.
OSCILOSCOPE
Adjsuting Nut
2 Side 1
DECK
under Test
Head Phase Check Setup
|
Head Azimuth Adjustments Location
13
Advertisement
Table of Contents
