Sharp SG-315H Service Manual page 2

Receiver with : cassette tape-deck and record player
Table of Contents

Advertisement

—_ ©
CABINET
DISASSEMBLY
. Remove
the turntable by pulling upward.
. Lift up the player board at the lefthand and slide the player board to the left.
. Remove
four (4) slide volume knobs and tuning knob.
. Remove
the cabinet bottom retaining screw.
Remove
the screw retaining the control panel.
. Lift up the control panel at this side and pull out the panel.
retaining the power transformer bracket.
DIAL
CORD
STRINGING
DIAL
POINTER
TUNING
SHAFT
2.5TURN
Figure
1
CHECK
AND
ADJUSTMENT
= TAKE-UP TORQUE IN FAST FORWARD MODE (Refer to Figure 2)
1. Place a test reel on a take-up reel spindle.
. Put a tension gauge on the test reel.
. Set the unit in fast forward mode by depressing the FAST FORWARD button.
. Turn the gauge slowly to counterclockwise direction and read the gauge.
. The reading on the tension gauge should be 60 — 90gr.
nr
WD
m= REWIND TORQUE IN REWIND MODE (Refer to Figure 2)
1. Place a test reel on a supply reel spindle.
2. Put a tension gauge on the test reel.
3. Set the unit in rewind mode.
4. Turn the gauge slowly to clockwise direction and read the gauge.
5. The reading on the tension gauge should be 55 — 90gr.
TAKE-UP TORQUE IN PLAY MODE (Refer to Figure 2)
1. Do the same steps | and 2 in "TAKE-UP TORQUE IN FAST FORWARD MODE".
2. Set the unit in playback mode by depressing the PLAY button.
3. Check the take-up torque.
4. The reading on the tension gauge should be 30 — 60gr.
PINCH ROLLER
PRESSURE (Refer to Figure 3)
1. Set the unit in playback mode.
2. Hook the tension gauge at the pinch roller shaft.
3. Read the gauge when the pinch roller separates from the capstan about 0.5mm distance.
4. The pinch roller pressure should be 400 — S40gr.
TURN
TABLE
20¢ (25/32'')
MEASURING
REEL
TENSION
GAUGE
Figure 2

Advertisement

Table of Contents
loading

Table of Contents