Sanyo DC-F320, Service Manual

Page: 15 / 56

TAPE DECK ADJUSTMENTS
(3)Motor speed
NORMAL SPEED
1. Insert the
test tape (MTT-111 N) into Tape “A” or “B”.
2. Align to 3020 by
2980 at this condition.
Alignment
Adjust output to 700mV by which activating
BIAS circuit.
TAPE OUTPUT
TESTPOINT
CN373
BIAS-ADJUSTMENT
TAPE SPEED
L-CH
VR374
BIAS-ADJUSTMENT
BIAS-FREQUENCY
R-CH
ADJUSTMENT
VR384
2. CHECKING THE MECHANISM TORQUES
1. Clean the head, capstan and pinch roller before making any measurement.
2. Check the both normal and
reverse playback.
Measureent Take-up torque
Cassette
for PLAY
TW-211
measurement
TW-2231
PLAY
25
60
Back tension
PLAY TW-211
2.0
Tape tension
Drive-power cassette
70 gr or more
14