Lexus ES300 (1997 year). Service manual — part 138

V08550

18

CD Player

POWER COMING IN, BUT CD PLAYER NOT OPERATING

Is CD inserted with correct side up?

Is radio operating normally?

Insert correctly.

CD faulty.

Protective circuit in
operation.

Formation of condensation

due to temp. changes.

Function OK if different CD inserted?

Has sudden temperature change
occurred inside cabin?

CD player faulty.

Is temperature inside cabin hot?

Speaker wire harness faulty.

Speaker faulty.

Power amplifier faulty.
Recheck system after repair.

Is there continuity in speaker wire harness?

Temporarily install another speaker.
Functions OK?

Hiss noise from speaker?

Radio assembly faulty.
Recheck system after repair.

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

CD Player

SOUND JUMPS

19

CD player faulty.

Does sound jump only during strong vibration?

Is CD player properly installed?

Functions OK if different CD inserted?

Has sudden temperature change occurred inside cabin?

Jumping caused by vibration.

Install properly.

CD faulty.

Formation of condensation due to
temp. changes.

Yes

Yes

Yes

Yes

No

No

No

No

BE–158

–

BODY ELECTRICAL

AUDIO SYSTEM

1542

1997 LEXUS ES300 (RM511U)

V08551

20

CD Player

SOUND QUALITY POOR (VOLUME FAINT)

Is radio operating normally?

CD faulty.

Function OK if different CD inserted?

CD player faulty.

Speaker faulty.

Temporarily install another speaker.
Functions OK?

Power amplifier faulty.
Recheck system after repair.

Yes

No

Temporarily install another speaker.
Function OK?

21

CD Player

EITHER SPEAKER DOES NOT WORK

Is speaker property installed?

CD player faulty.

Install properly.

Speaker wire harness faulty.

Speaker faulty.

Is hiss noise produced by non–functioning speaker?

Is there continuity in speaker wire harness?

Is radio operating normally?

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

Radio assembly or CD player or power amplifier faulty.

Radio assembly faulty.
Recheck system after repair.

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–159

1543

1997 LEXUS ES300 (RM511U)

V08488

CD player faulty.

22

CD Player

CD WILL NOT BE EJECTED

Is auto search button of radio
operating normally?

No

Is +B applied to CD player?

Radio assembly
faulty.

Replace fuse.

+B wire harness faulty.

Power amplifier faulty.

Radio assembly faulty.

Is +B applied to radio assembly?

Check if RADIO No.1 fuse is OK?

Is +B applied to power amplifier?

No

No

No

Yes

NG

OK

Yes

Yes

Yes

BE–160

–

BODY ELECTRICAL

AUDIO SYSTEM

1544

1997 LEXUS ES300 (RM511U)

V08552

23

Noise

NOISE OCCURS

No

Yes

NG

OK

Does the noise occur only in the radio?

Does the noise occur in a particular place?

Is there any additional installation part
around the glass imprinted antenna?
(Sun shade film, telephone antenna etc.)

Does the noise occur even pulling out the
antenna cord from the radio?

Does the noise occur even pulling out the
antenna terminal on the glass surface?

Isn’t there any adhesive (Butyl rubber)
stuck on the bases of the antenna
terminal, defogger terminal and bus bar?

Check the grounding of the antenna,
antenna cord, coke coil, and noise filter.
(See page

BE–142

)

Does the noise occur even pulling out
the defogger terminal?

Does the condition get better by exchanging
the antenna cord.

Radiate directly to the antenna from the
generation source.

Does the condition get better by exchanging
the choke coil?

Exchange the antenna cord.

Exchange the choke coil.

Interfering noise from the defogger line
and choke coil.

Grounding failure.

Failure of glass installation.
Muse plane the butyl rubber.

Mixing into the antenna cable.

Check the radio.

Influence of the film or the noise radiation
of the additional installation part.

Does the noise stop by removing it?

An electric environment.

Refer to No.25.

(It occurs in the cassette
and CD.)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

No

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–161

1545

1997 LEXUS ES300 (RM511U)