Sanyo DC-F430AV Service Manual page 14

TAPE DECK ADJUSTMENTS
(3)Motor speed
a. HIGH SPEED
-
1. Insert the test tape (TCW-211 or etc. 1,500 Hz optional)
into Tape "A" or "B".
2. Press the "FM MODE& SOUND PRESET" buttons at the
same time.(o)
3. Press the TAPE STOP button.(@)
4. Press the COMPUTER REC "HIGH" button.(@)
(Service mode : High speed)
5. AdjustVR311 (Tape "A")orVR313 (Tape "6) so that the
frequency counter show a reading of 3,000 Hz.
6. Press the
STOP
button.
~lON @
(Cancel service mode)
FM MODE 6)
/
H
CO*
NORivlAL
SPEED (@)
1~
b. NORMAL SPEED
1.
Insert the test tape (TCW-111 or etc. 3,000 Hz) into Tape
,,Al, or ,,B,,
2.
Press the COMPUTER REC "NORMAL" button.(@)
I
\
(Service mode : Normal speed)
TAPE STOP @ SOUND PRESET @l
3. Adjust VR312 (Tape "A') or VR314 (Tape "B") so that the
frequency counter show a reading of 3,000 Hz.
4. Press the STOP button.
5. To cancel service mode,
press the "~/ON " button. (@)
6L
,W06 ~ :%; AL
J3005
SPEED
?
1
TAPE "A"
n
SPEED
%;'
HIGH SPEED
TEST POINT
VR314
VR313
NORMAL
D
=5
,1
TAPE "B"
J3002
/
HIGH'SPEED
TEST POINT
—
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.
v
Measurement Take-up torque
Back tension Tape tension
Cassette for PLAY :TW-211 lA(FWD) PIAY:TW-211 lA(FWD) Drive-power cassette
measurement PIAY : TW-2121A(REV) PIAY : TW-2121A(REV) TW-2412(FWD)
F. FWDIREW : TW-2231 TW-2422(REV)
PLAY 28- 63gr.cm 2.0- 4.5gr.cm 70 gr or more
F. FWD/REW
60- 120gr.cm
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