Sanyo TRC-860-C Service manual

FILE NO.

Service Manual

Compact Cassette Recorder

TRC-860C

(XE)

Contents

Tape adjustments ............................................................ 1

Exploded view .................................................................. 2

Parts list ........................................................................... 3

Schematic diagram .......................................................... 4

Wiring diagram ................................................................. 5

PRODUCT CODE No.
164 100 03

REFERENCE No.

SM5810648

TAPE ADJUSTMENTS

a. Adjusting Azimuth

• Be sure to clean the heads before attempting to make any adjustment.

• After completion of the adjustment, apply the threadlock (TB-1401B) to the azimuth adjustment screws to fix them securely.

(1) Load an azimuth adjustment test tape (VTT-703 etc., 10 kHz)

in tape deck.

(2) Press the PLAY button.

(3) Use a cross-tip screwdriver to turn the screw for azimuth

adjustment so that the left and right outputs are maximized.

(4) Press the STOP button.

b. Replacing the Head

• After replacing the head, demagnetize the head by using a

degausser.

• All wiring should be returned to the original position after work is

completed.

HEAD AZIMUTH ADJUSTMENT

PLAY

R / P HEAD

WHITE

EARTH

c. Adjusting Tape Speed

• Use a plastic screwdriver for adjustment.

(1) Inset the test tape (TCC-119 etc., 3000 Hz).

(2) Press the PLAY button.

(3) Use a flat-tip screwdriver to turn the VR403 to adjust so that

the frequency counter becomes 3000 Hz.

d. Checking the Mechanism Torques

• Clean the head, capstan and pinch roller before making any measurement.

Measurement Take-up torque Back tension Tape tension

Cassette for PLAY : TW-2111A

measurement F.FWD / REW : TW-2231 TW-2412

PLAY 23~50 gr.cm 1.0~5.0 gr.cm 30 gr or more

F.FWD 55 gr.cm more -- - -- -

REW 55 gr.cm more -- - -- -

PLAY : TW-2111A

MOTOR SPEED
ADJUSTMENT

Drive-power cassette

2.4 4.8
SPEED

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