Circuit Adjustment - Sharp Rt-W600H Serviceanleitung

SETTING
Dolby NR Switch: off
POSITION
Deck 1 Tape Selector Switch: Normal
OF SWITCH
Deck 2Tape Selector Switch: Normal
AND KNOB
Source Switch: Line
ITEM
INPUT
BIAS
OSCILLATOR
FREQUENCY
BIAS
CURRENT
ERASE
CURRENT
DECK 1 Test tape
PLAY BACK MTT-150
SENSITIVITY
DECK 2 Test tape
PLAYBACK
MTT-150
SENSITIVITY
PLAY BACK
recorded
SENSITIVITY
tape
400 Hz
- 1 3 d B
Table *
1
Voltmeter reads
More than 594 mV
Less than 473 mV
Dubbing Speed: Normal
L: VR301 Normal: 11.4V
Metal : 36 f 4V
See that the electronic
voltmeter reading is
within the range from
473 mV to 594 mV.
If not, take the
procedures shown in
the Table 1.
l
1. Adjust the record level
knobs so that the elec-
375 mV.
2. Playback the normal
tape recorded and ad-
just the semi-variable
resistor so that the
electronic volt-meter
read 375 mV.
Procedures
Cut the resistor Rl 11, R211
Cut the resistor R 109, R209
Ground
Figure 8-l BIAS OSCILLATOR FREQUENCY
TP301
Record Mode
Figure 8-2 BIAS/ERASE CURRENT
Playback Mode
Unit
Figure 8-3 DECK l/DECK 2 PLAYBACK SENSlTiVlTY
LINE
IN
Low Frequency
Electronic
Figure 8-4 RECORD/PLAYBACK SENSITIVITY
Electronic
Electronic
Voltmeter
LINE
Ground
Non-recorded
Tape
MTT-502