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– 17 –

2

 arm (roller)

3

 roller assy

4

 PS 2x3

5

 LOAD SW board

Fig. 1

1

 tension spring (RA)

washer

washer

arm

washers

4

 loading motor assy

3

 P 2x3

1

 CN3

5

 PS 2x4

6

 PS 2x4

• When installing, take note of the positions
  arm (roller) and washers. (Fig. 1)

7

 SERVO board

2

 CN2

arm

– 18 –

8

 compression spring (FL)

1

 tension spring (angle)

6

 chassis (OP) (O/S) assy

3

 optical pick-up block

1

 P 2x3

2

 sled motor assy

7

 compression spring (FL)

4

Fit lever (D) in the
direction of the arrow.

3

 damper (T)

5

Turn loading ring in the
direction of the arrow.

2

 damper (T)

– 19 –

This set have the test mode function. In the test mode, FM Auto Scan/
Stop Level and MW Auto Scan/Stop Level adjustments can be
performed easier than it in ordinary procedure.

<Set the Test Mode>
1. Set the “OFF” mode.
2. Push the preset  4  button.
3. Push the preset  5  button.
4. Press the preset  1  button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.

<Release the Test Mode>
1. Push the  OFF  button.

When the tuner unit is defective, replace it by a new one because
its internal block is difficult to repair.

The adjustments of tuner section, should be performed according to
the following sequence.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. FM RDS S-Meter Adjustment
4. MW Auto Scan/Stop Level Adjustment

FM RF signal

generator

0.01 µF

antenna
terminal

set

Carrier frequency : 98.00 MHz
Output level

: 22 dB (12.6 µV)

Mode

: mono

Modulation

: 1 kHz, 22.5 kHz deviation (30%)

Procedure :
1. Set to the test mode.
2. Push the  SOURCE  button and set to FM.

Display

D-BASS switch : OFF
SOURCE button : FM

3. Push the preset  3  button.

Display

REG

SHUF1

4. Adjust with the volume RV2 on TU1 so that the “FM” indication

turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that put
out light “0” indication and adjustment.

Display

Adjustment Location : See page 21.

REG

SHUF1

REG

SHUF1

– 20 –

D-BASS switch : OFF
SOURCE button : FM

FM RF signal

generator

Carrier frequency : 98.00 MHz
Output level

: 70 dB (3.2 mV)

Mode

: stereo

Modulation

: main : 1 kHz, 20 kHz deviation (26.5%)

sub : 1 kHz, 20 kHz deviation (26.5%)
19 kHz pilot : 7.5 kHz deviation (10%)

antenna
terminal

set

0.01 µF

10 k 

Ω

level meter

LINE OUT REAR

L-CH

L-CH

A

B

R-CH

L-CH

Adjust RV3 on TU1 for
minimum reading.

R-CH

R-CH

C

D

L-CH

R-CH

Adjust RV3 on TU1 for
minimum reading.

L-CH stereo separation : A – B
R-CH stereo separation : C – D
The separations of both channels should be equal.

Specification : Separation more than 28 dB

Adjustment Location : See page 21.

FM RF signal

generator

0.01 µF

antenna
terminal

set

Carrier frequency : 98.00 MHz
Output level

: 35 dB (56.2 µV)

Mode

: mono

Modulation

: no modulation

Procedure :
1. Set to the test mode. (See page 19.)
2. Push the  SOURCE  button and set to FM.

Display

D-BASS switch : OFF
SOURCE button : FM

3. Push the preset  10  button.
4. Adjust VR601 so that the display indication is “16.0”.

Display

REG

SHUF1

REG

SHUF1

Specification : Display indication : 15.8 to 16.2.

Adjustment Location : See page 21.