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17

Procedure:
1.

Supply a 98 MHz signal at 28 dB from the ANTENNA terminal.

2.

Tune the set to 98 MHz.

3.

Adjust RV11 to the point (moment) when the TUNED indicator
will change from going off to going on.

Adjustment Location: MAIN board

Procedure:
1.

Supply a 98 MHz signal at 60 dB from the ANTENNA terminal.

2.

Tune the set to 98 MHz.

3.

Measure voltage between pin 22 and pin 3 of IC11.  Adjust
T11 until the voltage becomes 0 V.

Adjustment Location: MAIN board

 (Component Side)

Ω

Ω

Ω

Ω

Note :

1. CD Block is basically designed to operate without adjustment.

Therefore, check each item in order given.

2. Use LUV-P01 (4-999-032-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M

Ω impedance.

4. Clean the object lens by an applicator with neutral detergent

when the signal level is low than specified value with the
following checks.

Procedure :
1. Connect an oscilloscope to TP (FEO).
2. Connect between TP (FEI) and TP (DVC) ( 1.65 V) by lead

wire.

3. Turn Power switch on.
4. Load a disc (LUV-P01) and actuate the focus search. (In

consequence of open and close the disc tray, actuate the focus
search)

5. Confirm that the oscilloscope waveform (S-curve) is

symmetrical between A and B. And confirm peak to peak level
within 2 

± 0.5 Vp-p.

6. After check, remove the lead wire connected in step 2.

Note :

• Try to measure several times to make sure than the ratio

of A : B or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the

brightness to obtain best waveform.

Procedure :
1. Connect an oscilloscope CH1 to TP (RFDC) and CH2 to TP

(RFAC).

2. Turn Power switch on.
3. Load a disc (LUV-P01) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF

signal level is correct or not.

T11

RV11

RV351

RV354

RV304

RV303

RV302

RV301

CN301

CN304

CN302

CN303

1

3

±

18

Note :

Clear RF signal waveform means that the shape “ 

◊ ” can be clearly

distinguished at the center of the waveform.

Procedure :
1. Connect an oscilloscope to TP (TEO) and TP (DVC).
2. Turn Power switch on.
3. Load a disc (LUV-P01) and playback the number nine track.
4. Press the  gG  button. (Becomes the 1 track jump mode.)
5. Confirm that the level B and A (DC voltage) on the oscilloscope

waveform.

6. Adjust RV101 on the BD board so that the center of waveform

becomes the same voltage of DVC. (i.e.  A=0V)

[BD BOARD] (Conductor Side)

±

±

±

19

Note on Schematic Diagram:
• All capacitors are in 

µ

F unless otherwise noted.  pF: 

µµ

F

50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in 

Ω

 and 

1

/

4

 

W or less unless otherwise

specified.

•

¢

: internal component.

•

C

: panel designation.

• X

: parts extracted from the component side.

•

: Pattern from the side which enables seeing.

• Indication of transistor.

• 

A

 : B+ Line.

• 

B

 : B– Line.

•

H

: adjustment for repair.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-
tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F

: FM

f

: AM

E

: PB (DECK A)

d

: PB (DECK B)

G

: REC (DECK B)

J

: CD

c

: digital out

• Abbreviation

AR

: Argentina model

AUS

: Australian model

E51 : Chilean and Peruvian model
KR

: Korea model

MX

: Mexican model

SP

: Singapore model

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

Q

Note:
The components identi-
fied by mark 

0

 or dotted

line with mark 

0

 are criti-

cal for safety.
Replace only with part
number specified.

Note:
Les composants identifiés par
une marque 

0

 sont critiques

pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.

20

MOTOR board

ADDRESS SENSOR board

DRIVER board

MAIN TRANS board

SWITCH board

SENSOR board

BD board

SUB TRANS board

MAIN board

POWER board

LEAF SW board

HEAD (A) board

HEAD (B) board

PANEL board

CD SWITCH board

PAD SWITCH board