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XL-HP505

6 – 19

C355

R355

R374

R378

R373

R372

R359

R360

C387

R379

R388

R395

R376

C386

R377

C392

C395

R385

R383

C385

R380

Q360

R393

C356

C351

R353

C354

C350

C353

R352

C399

C366

R351

R365

C369

R350

C361

R356

C342

R357

C363

VD301

R323

C323

C334

C331

R336

C330

C332

C335

R381

C397

C381

C302

C382

C384

C306

C305

C343

C304

C303

C315

C308

C317

C316

R316

C309

VD302

R311

R313

C313

VD303

C310

R302

R322

R325

C324

C312

C311

R327

C388

CHASSIS

GND

FM ANNTENNA

TERMINAL

AM LOOP

ANNTENNA

GND

FM

75 OHMS

AM

IF

FM

OSC

FM IF

FM RF

C372

C374

C373

C371

C383

R386

R391

IC302

R392

R384

R387

L351

C380

L352

C396

C391

ZD351

R382

C393

C370

C398

T351

CF352

C357

C352

CF351

C358

CF303

X351

IC303

C367

C362

R358

C368

T306

C364

C365

CNS303

T303

D302

D301

CNP301

SO302

C394

X352

IC301

BF301

L312

D305

R309

T301

C389

C318

C320

Q302

T302

R314

R375

C307

1

2

1

1

1

2

3

2

3

B

C

E

2
3
4
5
6
7
8
9

10

11

22
21
20
19
18
17
16
15
14

13
12

1
2
3
4
5
6
7
8
9

10

11
12

24
23
22
21
20
19
18
17
16
15
14

14

TP302

TP301

13
12
11
10

9
8
7
6
5
4
3
2
1

13

AM TRACKING fL

AM BAND

COVERAGE fL

TO MAIN PWB

6-12 6 - C

CNP303

1

2

3

1

2

3

4

5

6

7

8

9

TUNER PWB-C

XL-HP505

6 – 20

TAPE MECHANISM Ass'y(213)

1

7

1

7

BK

RD

6

1

RECORD/PLAYBACK/ERASE HEAD

6-14 4 - G

TO DISPLAY PWB

CNP702

FFC702

6-13 10 - A

FROM MAIN PWB

CNS102

BR

COLOR TABLE

RD(R)

OR

YL

GR

BL
VL

GY

WH(W)

BK
PK

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE
BLACK

PINK

SOLENOID

TAPE MOTOR

TAPE MECHANISM

PWB Ass'y

HEAD PLATE

BLOCK

XL-HP505

7 – 1

Audio

XL-HP505

Service Manual

XLHP505

Market

E

 

The CD section may not operate when the objective lens of the optical pickup is dirty. Clean the objective lens, and check the playback operation.
When this section does not operate even after the above step is taken, check the following items.

Remove the cabinet and follow the trouble shooting instructions.

"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens. Before attempting
any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn the power off.

Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.

Do not touch the lens with the bare hand. 

1) Check the power to IC1 (LC78648E), the presence of the clock signal (16.9344 MHz) and the status of the RESET terminal (pin 67 on IC1).

2) Does the pickup move to the PICKUP-IN Switch (SW1A) position ?

If (1) and (2) are OK, check the system microcomputer (especially the communication line with the DSP).

1) Focus-HF system check

2) Tracking system check

3) Spin system check

4) PLL system check

5) Others

Parts code

1.

CD optical pickup Lens cleaner disc

UDSKA0004AFZZ

HOW TO USE

CAUTION

Cleaning fluid

Cleaner disc

Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the

brush on the CD cleaner disc which has the mark next to it.

Place the CD cleaner disc onto the CD disc tray with the brush side down,then

press the play button.

You will hear music for about 20 seconds and the CD player will automatically stop.

If it still play continuously, press the stop button.

1.

2.

3.

The CD lens cleaner should be effective for 30-50 operations, however if the

brushes become worn out earlier then please replace the cleaner disc.

If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft

cloth.

Do not drink the cleaner fluid or allow it contact with the eyes. In the event of this

happening then drink and / or rinse with clean water and seek medical advice.

The CD cleaner disc must not be used on car CD players or on computer CD-ROM

drives.

All rights reserved. Unauthorized duplicating, broadcasting and renting this product

is prohibited by law.

XL-HP505

7 – 2

Press the Tray1 CD Eject Button without inserting a disc, and try 
starting the playback operation.

FDO

TDO

Stopped

1. Does the pickup move to the PICKUP-IN Switch (SW1A) posi-
tion ?

No

Sled motor (M2A).

Yes

2. Does the focus (lens) move up and down ?
(Waveform drawing Figure 1)

No

Check the focus peripheral circuit.

Yes

3. Is the laser lit ?

No

Check the laser diode driver Q1 peripheral circuit.

Yes

4. Is the turntable rotating ?

No

Spindle motor (M1A).

When a disc is loaded, start playback operation.

1. Is focus servo activated ?
(Waveform drawing Figure 2)

No

Pins 7~11, 79 and 80 on IC1
Check the laser diode driver Q1 peripheral circuit.

Yes

2. Does DRF change from "L" to "H" ?

No

Is the disc rotating ?

No

Check the spin system.

Yes

If the disc is spinning and a HF waveform 
is generated, DRF will go H.

3. Is the HF waveform normal ?
(Waveform drawing Figure 3)

No

If the level is not normal.

FDO

DRF

TE

Stopped