Sharp WF-T738H Serviceanleitung Seite 12

WF-T738H/E
@ CIRCUIT ADJUSTMENT
(AUDIO
SETTING • Tape selector
POSITION • Function
OF *ITCH
• Beat cancel
AND KNOB
ITEM INPUT
BIAS OSCI.
LLATION
FREQUENCY
ERASE
CURRENT
PLAYBACK Test tape
AMPLIFIER MTT-118
SENSITIVITY
SECTION)
switch: Normal
selector switch: Tape
switch: A
ADAJST-
MENT REMARKS (CHECK)
POINT
(A = 91 ± 4 kHz)
(B = A+8 kHz ± 1.5 kHz)
(C = A+12 kHz ± 2 kHz)
(Normal: 60 ± 10 mV)
(3.0 V ± 3 dB)
E.v: ELECTRONIC VOLTMETER
Record
Record/ Playback
Heed
100 ohm
unit
GND
Figure 14— 1 BIAS OSCILLATION
Record
Erase
Head
I ohm
Unit
GND
Figure 14—2 ERASE
EXT.
Playbeck J651
Test Tepe
Unit
MT T.118
Record/Ptayb•ck
Head
Figure 14—3 PLAYBACK AMPLIFIER
Oscilloscope
Frequency
Coun ter
FREQUENCY
Oscilloscope
E.V.
CURRENT
oscope
SP E.V.
GND
4 ohms
SENSITIVITY