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Sanyo MCD-ZX500F Service Manual page 5

Cd portable radio cassette recorder
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TAPE DECK ADJUSTMENTS
1. HEAD REPLACEMENT
After replacement, demagnetize. the heads by using a degausser.
Be sure to clean the heads before attempting to make any adjustments.
All wiring should be returned to the original position after work is completed.
2. HEAD AZIMUTH ADJUSTMENT
(1) Load the test tape(VTT-703, etc., 10 KHZ) for azimuth
adjustment.
(2) Press the PLAY button.
(3) Use a cross-tip screwdriver to turn the screw for azimuth
adjustment so thae the left and right output are maximized
(4) Press the STOP button.
(5) After completion of the adjustment, use thread lock(TB-1401B)
to secure the azimuth-adjustment screw.
3 MOTOR REPLACEMENT
4 AC BIAS FREQUENCY ADJUSTMENTS
(1) connect counter to T201(BS);
(2) R/P swith in recording state;
(3)Adjusting T801 use a plastic screw,AC bias frequency: 80KHZ..
5 MOTOR SPEED ADJUSTMENT
(1) Insert the test tape(MTT-111N, etc., 3,000 HZ)
(2) Press the PLAY button.
(3) Use a flat-tip screwdriver to turn the SVR(located inside the
rear of the motor) to adjust SVR so that the frequency counter
become 3,000 HZ
6. CHECKING THE MECHANISM TORQUSE AND TENSION
Clean the head, capstan and pinch roller making any measurement.
Measurement
Cassette ofr
measurement
PLAY
F.FWD
REW
Take-up torqe
PLAY:TW-211A
F.FWD/REW:TW-2231
30-60 gr.cm
55-120 gr.cm
55-120 gr.cm
- 3 -
HEAD AZIMUTH
ADJUSTMENT
TEST TAPE
(Reference figure)
Back tension
PLAY: TW-2111A
2.0 - 4.5 gr. cm
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PLAY
(Reference figure)
MOTOR SPEED
ADJUSTMENT
Tape tension
Drive-power cassette
TW-2412
60 gr or more
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