Sony XL505 Service Manual

XL-505/505C,CP-505B

SERVICE MANUAL

No. S1808XL505///

XL-505
XL-505C
CP-505B

XL-505 and CP-505B constitute XL-505.
XL-505C and CP-505B constitute XL-505C.

• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.

CONTENTS

Page

IMPORTANT SERVICE NOTES (XL-505 ONLY) .............................................................................................................. 2

SPECIFICATIONS ............................................................................................................................................................. 2

NAMES OF PARTS ........................................................................................................................................................... 3

OPERATION MANUAL ...................................................................................................................................................... 5

QUICK GUIDE ................................................................................................................................................................... 6

DISASSEMBLY.................................................................................................................................................................. 7

REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 8

ADJUSTMENT ................................................................................................................................................................... 9

BLOCK DIAGRAM ........................................................................................................................................................... 16

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 20

VOLTAGE ........................................................................................................................................................................ 26

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 27

TYPE OF TRANSISTOR AND LED ................................................................................................................................. 27

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 28

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 29

FUNCTION TABLE OF IC................................................................................................................................................ 34

LCD SEGMENT ............................................................................................................................................................... 41

REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (XL-505 ONLY)

SHARP CORPORATION

– 1 –

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

XL-505/505C,CP-505B

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

IMPORTANT SERVICE NOTES (XL-505 ONLY)

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.

1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the chassis
and other metal parts in the audio product.

2. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment
covers or shields, mechanical insulators etc.

3. To be sure that no shock hazard exists, check for leakage
current in the following manner.

* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor

paralleled by a 0.15µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.

* Use a VTVM or VOM with 1000 ohm per volt, or higher,

sensitivity to measure the AC voltage drop across the
resistor (See diagram).

* Connect the resistor connection to all exposed metal parts

having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.

VTVM

AC SCALE

1.5k ohms
10W

0.15 µ F

TO EXPOSED
METAL PARTS

All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.

TEST PROBE

CONNECT TO
KNOWN EARTH
GROUND

SPECIFICATIONS

XL-505/505C

General

Power source: AC 120 V, 60 Hz
Power consumption: 30 W
Dimensions: Width; 160 mm (6-5/16")

Height; 240 mm (9-1/2")
Depth; 250 mm (9-7/8")

Weight: 2.6 kg (5.7 lbs.)

Amplifier section

Output power: RMS; 10 W (5 W + 5 W)

(10 % T.H.D.)

Output terminals: Speakers; 4 ohms

Headphones; 16-50 ohms
(recommended; 32 ohms)

Tuner section

Frequency range: FM; 87.5 - 108 MHz

AM; 530 - 1,720 kHz

Compact disc player section

Type: Compact disc player
Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

D/A Converter: 1-bit D/A converter
Filter: 8-times oversampling digital filter
Frequency response: 20 - 20,000 Hz
Wow and flutter: Unmeasurable

(less than 0.001% W.peak)

Cassette deck section

Frequency response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 50 dB
Wow and flutter: 0.25 % (WRMS)

CP-505B

Type: Full range speaker system
Speakers: 10 cm (4") full-range speaker
Rated input power: 5 W
Maximum input power:10 W
Impedance: 4 ohms
Dimensions: Width; 145 mm (5-3/4")

Height; 240 mm (9-1/2")
Depth; 183 mm (7-1/4")

Weight: 1.1 kg (2.4 lbs.)/each

Specifications for this model are subject to change without
prior notice.

– 2 –

XL-505/505C

Front Panel

1. Function/Band/Track Number Indicator

2. Volume Indicator

3. Timer Indicator

4. Record Indicator

5. Sleep Indicator

6. Repeat Indicator

7. Play Indicator

8. Extra Bass/Equalizer Indicator

9. Random Indicator

10. Memory Indicator

11. FM Stereo Mode Indicator

12. FM Stereo Indicator

13. CD Compartment

14. On/Stand-by Button

15. Remote Control Sensor

16. Record Pause/Beat Cancel Button

17. Memory/Set Button

18. (CD) Track Down/Review Button
(TAPE) Rewind Button
(TUNER) Preset Down Button

19. Headphone Socket

20. CD Eject Button

21. Function Selector Button

22. Band Selector Button

23. Extra Bass/Equalizer Mode Button

24. Volume Up/Down Buttons

25. (CD) Play/Pause Button
(TAPE) Play Button
(TUNER) Tuning Up Button

26. (CD/TAPE) Stop Button
(TUNER) Clear Button

27. (CD) Track Up/Cue Button
(TAPE) Fast Forward Button
(TUNER) Preset Up Button

28. Cassette Compartment

NAMES OF PARTS

6

13

14

15
16

17

18

19

1

VOL

EQ

78

XL-505/505C,CP-505B

2

AM PM REC SLEEP

RANDOM MEMORY ST

91011

3

4

5

kHz

MHz

12

20

21
22

23

24

25
26

27
28

Rear Panel

1. AC Power Input Socket

2. FM/AM Loop Aerial Socket

3. Speaker Terminals

2

3

1

– 3 –

XL-505/505C,CP-505B

CP-505B

Speaker Section

1. Full-Range Speaker

2. Bass Reflex Duct

3. Speaker Wire

XL-505/505C

Remote Control

1

2

3

1

1. Remote Control Transmitter LED

2. On/Stand-by Button

3. (CD) Repeat/Random Button

4. (CD/TUNER) Memory/Set Button

5. (CD/TUNER) Clear Button

6. Timer/Set Button

7. Sleep Button

8. (CD/TAPE) Stop Button

9. (CD) Play/Pause Button
(TAPE) Play Button

10. (CD) Track Up/Cue Button
(TAPE) Fast Forward Button
(TUNER) Preset Up Button

11. (CD) Track Down/Review Button
(TAPE) Rewind Button
(TUNER) Preset Down Button

12. Tuning Up/Down Buttons

13. Timer Button

14. Timer Up/Down Buttons

15. Function Selector Button

16. Band Selector Button

17. Extra Bass/Equalizer Mode Button

18. Volume Up/Down Buttons

2

3
4

5
6

7
15
16

ON/

STAND-BY

/RANDOM

MEMORY/

SET

CLEAR

SLEEP

FUNCTION

TIMER/

SET

BAND

PRESET

TUNING

TIMER

X-BASS/

EQUALIZER

VOLUME

TIMER

8
9

10

11
12
13

14

17

18

– 4 –

OPERATION MANUAL

SETTING THE CLOCK

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Press the MEMORY/SET button.

3

Press the PRESET ( or ) button to select the time display

mode.

"AM 12:00" → The 12-hour display will appear.

(AM 12:00 - PM 11:59)

"0:00" → The 24-hou r display will ap pear.

(0:00 - 23:59)

Note that this can only be set when the unit is first installed

or it has been reset (see page 15).

4

Press the MEMORY/SET button.

5

Press the PRESET ( or ) button to adjust the hour.

Press the PRESET button once to advance the time by 1 hour.

Hold it down to advance continuously.

When the 12-hour display is selected, "AM" will change auto-

matically to "PM".

6

Press the MEMORY/SET button.

7

Press the PRESET ( or ) button to adjust the minutes.

Press the PRESET button once to advance the time by 1

minute. Hold it down to change the time in 5 minute intervals.

The hour setting will not advance even if minutes advance from

"59" to "00".

8

Press the MEMORY/SET button.

The clock starts operating from "0" seconds. (Seconds are not

displayed.)

Note:

In the event of a power failure or when the AC power lead is

disconnected, the clock display will go out.

When the AC power supply is restored, the clock display will

flash on and off to indicate the time when the power failure

occurred or when the AC power lead was disconnected.

ON/

STAND-BY

ON/

STAND-BY

MEMORY/

SET

MEMORY/

SET

PRESET

( / )

PRESET

( / )

AM 12:00 0:00

AM

AM

AM

AM

AM

AM

AM

2

3

4

5

6

7

8

If this happens, follow the procedure below to change the clock

time.

To change the clock time:

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Perform steps 4 - 8 above.

To change the time display mode:

1

Perform steps 1 - 3 in the section "RESETTING THE MICRO-

COMPUTER", on page 15.

2

Perform steps 1 - 8 above.

In this example, the clock is set for the 12-hour

(AM 12:00) system.

PREPARATION FOR USE

15

15

Remote control

When inserting or removing the batteries, push them towards

the battery terminals.

Installing the batteries incorrectly may cause the unit to mal-

function.

Precautions for battery use:

Insert the batteries according to the direction indicated in the

battery compartment.

Replace all old batteries with new ones at the same time.

Do not mix old and new batteries.

Remove the batteries if they are weak or if the unit is not in

use for long periods to prevent potential damage due to battery

leakage.

Caution:

Do not use rechargeable batteries (nickel-cadmium battery, etc.).

Notes concerning use:

Replace the batteries if control distance decreases or operation

becomes erratic.

Periodically clean the transmitter LED on the remote control

and the sensor on the main unit with a soft cloth.

Exposing the sensor on the main unit to strong light may in-

terfere with operation. Change the lighting or the direction of

the unit.

Keep the remote control away from moisture, excessive heat,

shock, and vibrations.

2 "AA" size batteries

(UM/SUM-3, R6,

HP-7 or similar)

Batteries are not included.

0.2 m - 6 m

(8" - 20')

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following conditions:

 To erase all of the stored memory contents (clock and timer

settings, and tuner and CD presets).

If the display is not correct.

If the operation is not correct.

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Unplug the AC power lead from the AC INPUT socket on the

unit.

3

Whilst pressing down the MEMORY/SET button and the X-

BASS/EQUALIZER button, plug the AC power lead into the

AC INPUT socket on the unit.

1

2,3

3

3

Caution:

The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

XL-505/505C,CP-505B

– 5 –

XL-505/505C,CP-505B

DESK TOP AUDIO SYSTEM

XL-505

Preparation for u se

Preparación para su uso

FM Antenna

Antena de FM

Right Speaker

Altavoz derecho

Connect the wire with the white line to the
minus (−) terminal and the plain wire to the
plus (+) terminal.

AC 120 V, 60 Hz

120 V de CA, 60 Hz

Conecte el cable con la línea blanca al
terminal negativo (-) y el cable sin línea al
terminal positivo (+).

CD playback

Reproducción de dis cos compactos

FUNCTION

Open

Abra

AM Loop Antenna

Antena de cuadro de AM

Left Speaker

Altavoz izquierdo

Label side up.

Con el lado de la
etiqueta encarada
hacia arriba.

Turning the power on and off

Conexión y desconexión de la
alimentación

ON/

STAND-BY

ON/

STAND-BY

CD PAUSE

TUNING UP

Close

Cierre

CLEAR

Quick-Guide
Guía rápida

Remote control

Control remoto

Remote Sensor

Sensor remote

8" - 20' (0.2m - 6m)

2 "AA" batteries

Dos pilas "AA"

Batteries are not included.

Las pilas no están incluidas.

Precaution

The sound level at a given volume setting
depends on a combination of speaker efficiency,
location and many other factors. It is advisable
to avoid exposure to high volume levels, which
occur while turning the unit on with the volume
control setting up high, or while continually
listening at high volume levels.

Only discs bearing the logo as
shown can be played in this
unit.

0,2m - 6m

15

15

Recording from CDs

Grabación de discos compactos

Load the
disc to
be

FUNCTION

recorded.

Introduzca
el disco
que va a
grabar.

Tape playback

Reproducc ión de cintas

FUNCTION

Radio operation

Funcionamiento de la radio

FM STEREO

FUNCTION

ST

BAND

FM MONO

AM

REC

PAUSE

TUNING UP

ST

CD PAUSE

CD PAUSE

TUNING UP

CD recording
starts.

La grabación de
CD empieza.

CLEAR

CD PAUSE

TUNING UP

TUNING

CLEAR

The tape will
stop.

La cinta se
detendrá.

•

El nivel de sonido en una posición de volumen
fijado depende de una combinación del
rendimiento de las altavoces, la posición y
muchos otros factores. Es aconsejable evitar un
aumento de volumen. Esto se produce, por
ejemplo, al conectar el aparato con el volumen

CLEAR

The CD
will stop.

El CD se
detendrá.

puesto en una posición alta. Evite continuar la
audición prolongada a altos
niveles de sonido.

•

En este aparato sólo pueden
reproducirse los discos que
tengan el logotipo mostrado.

Sound control

Control del sonido

Volume

Volumen

Extra-BASS/Equalizer

Bajos extras/Ecualizador

X-BASS/

EQUALIZER

Precaución

VOLUME

VOLUME

X-BASS /

EQUALIZER

– 6 –

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:

1. Take cassette tape and compact disc out of the unit.

2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.

3. Take off nylon bands or wire holders where they need be
removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.

4. Take suffcient care on static electricity of integrated
circuits and other circuits when servicing.

XL-505/505C

STEP REMOVAL

1 Top Cabinet/ 1. Screw...................(A1) x4 7-1

Switch PWB 2. Socket.................. (A2) x3

2 Side Panel 1. Screw...................(B1) x7 7-1

(Left/Right)

3 Back Board 1. Screw...................(C1) x2 7-1

4 Main PWB/ 1. Screw...................(D1) x3 7-2

Headphones PWB 2. Socket.................. (D2) x4

5 Front Panel 1. Screw ...................(E1) x2 7-2

6 Display PWB 1. Screw...................(F1) x6 7-2

7 Power Supply PWB 1. Screw...................(G1) x4 7-2

8 Tape Mechanism 1. Screw...................(H1) x4 7-3

9 CD Mechanism 1. Screw...................(J1) x3 7-4

CP-505B

STEP REMOVAL

1 Speaker 1. Net....................... (A1) x1 7-5

CP-505B

PROCEDURE

3. Screw...................(A3) x1

2. Socket..................(F2) x1

PROCEDURE

2. Screw .................. (A2) x4

Speaker Box

FIGURE

FIGURE

XL-505/505C

Top 
Cabinet

(A1)x1
ø3x12mm

Front 
Panel

Front Panel

Display PWB

(F2)x1

(D2)x1

(D2)x1

(A3)x1
ø3x10mm

Swicth 
PWB

(E1)x2
ø3x10mm

Front Panel

Top Cabinet

(B1)x2
ø3x10mm

(F1)x6
ø3x10mm

Power Supply
PWB

Power 
Transformer

XL-505/505C,CP-505B

(A1)x1
ø3x12mm

(A2)x2

(A1)x2
ø3x10mm

(B1)x3
ø3x10mm

Rear Panel

Side Panel

Figure 7-1

(D1)x1
ø3x10mm

Figure 7-2

(C1)x2
ø3x10mm

Main 
PWB

(D2)x2

(D1)x1
ø3x10mm

CD Servo PWB

Main PWB

(D1)x1
ø3x10mm

(G1)x3
ø4x6mm

(G1)x1
ø3x10mm

CD 
Mechanism

(B1)x2
ø3x10mm

CD Servo
PWB

(A2)x1

Net
(A1x1)

(A2)x4
ø4x12mm

Direction of handle

Screw
driver

Figure 7-5

Tape MechanismOpen

Speaker

(H1)x4
ø3x10mm

Figure 7-3

(J1)x3
ø2.6x10mm

CD Mechanism

Top Cabinet

Figure 7-4

– 7 –

XL-505/505C,CP-505B

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION

Perform steps 1 and 9 of the disassembly method to remove
the CD mechanism.

How to remove the pickup (See Fig. 8)

1. Remove the mechanism cover, paying attention to the
pawls (A1) x 4 pcs.

2. Remove the screws (A2) x 2 pcs., to remove the shaft (A3)
x 1 pc.

3. Remove the stop washer (A4) x 1 pc., to remove the gear
(A5) x 1 pc.

4. Remove the pickup.

Note:

After removing the optical pickup connector wrap the front
end of connector in conductive aluminium foil so as to
prevent damage of optical pickup by static electricity.

( A1 ) x2

Mechanism Cover

( A2 ) x2
ø2.6 x6mm

CD Mechanism

( A1 ) x2

Shaft
( A3 ) x1

Gear
( A5 ) x1

StopWasher
( A4 ) x1

Pickup Unit

Figure 8

– 8 –

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

Play: TW-2412 Over 80 g

• Torque Check

Torque Meter

Play: TW-2111 30 to 70 g. cm
Fast forward: TW-2231 50 to 140 g.cm
Rewind: TW-2231 50 to 140 g.cm

• Tape Speed

Test Tape

MTT-111 In Motor 3,000 ± Headphones

Adjusting

Point

TAPE MECHANISM

Specified Value

Specified Value

Specified

Value

Instrument

Connection

90 Hz

XL-505/505C,CP-505B

TUNER SECTION

fL: Low-range frequency
fH: High-renge frequency

• FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Test Stage Frequency

Band — 87.50 MHz (fL): L303 *1
Coverage 3.4 ± 0.1 V

RF 98.00 MHz 98.00 MHz L302 *2

(10~30 dB)

Frequency

Display

*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker Terminal

• Detection

Signal generator: 10.7 MHz, FM sweep generator

Frequency Frequency

Test

Stage

IF 10.7 MHz 98.00 MHz T304(Turn Input: Pin 1 of

Display

Setting/

Adjusting

Parts

Setting/

Adjusting

Parts

the core of IC301
T304 fully Output: TP302
counter­clockwise.

Instrument

Connection

Instrument

Connection

Volume in motor

Figure 9-1 ADJUSTMENT POINT

MAIN PWB

FM BAND
COVERAGE

L303

TP301

FM MUTE
LEVEL

T351

AM IF

1

T304

FM IF

VR351

IC301

L302

FM RF

M901
Motor

CNP301

ANTENNA

T302

T306

AM
TRACKING

AM BAND
COVERAGE

TP302

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

IF 450 kHz 1,720 kHz T351 *1

Band — 530 kHz (fL): T306 *2

Coverage 1.1 ± 0.1 V
Tracking 990 kHz 990 kHz (fL): T302 *1

Frequency Frequency

Display

Setting/

Adjusting

Parts

Instrument

Connection

*1. Input: Antenna, Output: Speaker Terminal
*2. Input: Input is not connected, Output: TP301

• Setting the Test Mode

Keeping the BAND button and MEMORY button pressed, turn
on POWER. Then, the frequency is initially set in the memory
as shown in Table. Call it with the , button to use it
for adjustment and check of tuner circuit.

Preset No.

1 87.50 MHz 6 530 kHz
2 108.00 MHz 7 1,720 kHz
3 98.00 MHz 8 990 kHz
4 90.00 MHz 9 600 kHz
5 106.00 MHz 10 1,400 kHz

11~40

FM

Preset No.

AM

• FM Mute Level

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Frequency

98.00 MHz 98.00 MHz VR351*1 Input: SO301
(25 dBµV) Output: Speaker

Display

Adjusting

Parts

Instrument

Connection

Terminal

Adjust so that an output signal appears.

Figure 9-2 ADJUSTMENT POINTS

– 9 –

XL-505/505C,CP-505B
CD SECTION

1. This CD unit need adjustment as follow.

CD Test Mode

Step 1 VR803 (Focus Offset) DC + 40 mV (FEI>RFO) FEI (R826) and VRO

Step 4 VR802 (Tracking Error Balance) *1 (See Fig. 10-1) TSO (3-Pin of TP801)

*1: Adjust to obtaiin vertically symmetrical waveform (Fig. 10-1) with respect toreference DC level. The reference level is VRO

(Approx DC 2.1V).

2. This CD unit have the following automatic adjustment function. Automatic adjustment item.
2-1: Focus Servo Gain (Fig. 10-2)

Focus Gain Adjustment is performed when disc is changed.

2-2: Tracking Servo Gain (Fig. 10-3)

Tracking Gain Adjustment is performed when disc is changed and disc is playbacked.

VRO

Adjustment Part

TSO

1

SYMMETRICAL
UP AND DOWN

Value/Adjusting Method

FEI

Instrument Connection

(1-Pin of TP801)

and VRO (1 Pin of TP801)

1

TSO

TS2O

Figure 10-1

Figure 10-3

FSO

Figure 10-2

1

2

2

CD SERVO PWB

VR802 VR803

TP801

321

TRACKING
ERROR

FOCUS
OFFSET

BALANCE

Figure 10-4 ADJUSTMENT POINTS

– 10 –

321

T
S
O

V

N

R

C

O

XL-505/505C,CP-505B

TEST MODE

The Test Mode for this microcomputer has two variations, namely "regular Test Mode" for adjustment and measurement and "self­diagnosis Test Mode" for self-judgment in final inspection of products.

1. Entering the Test Mode

To enter the each Test Mode, press the POWER key, holding down the following two keys in the regular standby mode (power
off state). In this case only the main unit keys are valid. The Test Mode is not set even when the remote controller POWER
key is turned on.

[Regular Test Mode] [Holding Down Keys]

1. CD Test Mode (TEST 1) ................................... Stop + Play

2. Tuner Test Mode (TEST 3)................................ Memory/Set + Band Selector

3. Electronic volume Test Mode (TEST 4) ............ Stop + Extra Bass/Equalizer Mode

4. Timer Test Mode (TEST 5) ................................ Fast Forward + Function Selector

5. LCD Test Mode (TEST 6) .................................. Memory/Set + Function Selector

[Self-diagnosis Test Mode]

1. Key input diagnosis TEST Mode (TESTA) ........ Play + Record Pause

2. CD Test Mode (TEST 1)

1. Step 1 Mode
When the CD Test Mode is set, the following display lights, and the CD pickup slides to the innermost periphery.

After lighting for 1.5 sec

When the following operation key is pressed in this state, the following operation is performed.

"POWER" ................The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode.

"FF/FWD" ................After the pickup returns once to the innermost periphery, the pickup slides to the external periphery while

.................................this key is held down.

"REW/REV" .............After the pickup returns once to the innermost periphery, the pickup slides to the internal periphery while

.................................this key is held down. However, input is invalid if PU-IN is on.

"PLAY".....................Shift to Step 2

"STOP" ....................Invalid

* In case of mode entry the pickup is moved to the internal periphery. At this time entry of any key other than POWER key is

disabled until shift of pickup to the internal periphery is completed. If PU-IN SW ON cannot be detected while waiting for 10
seconds, the slide motor is stopped, the following error is displayed, and entry of any key other than POWER key is disabled.

– 11 –

XL-505/505C,CP-505B

2. Step 2 Mode
When the PLAY key is pressed in the mode above, the laser lighting is turned on. In this state the laser is only turned on,
and other operations are not performed.

When the following operation key is pressed in this state, the following operation is performed.

"POWER" ................The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode.

"FF/FWD" ................While this key is held down, the pickup slides to the external periphery.

"REW/REV" .............While this key is held down, the pickup slides to the internal periphery. However, if PU-IN is on, entry is

.................................invalid.

"PLAY".....................Shift to Step 3

"STOP" ....................Return to Step 1

3. Step 3 Mode

While the laser is lighting, the focus servo is turned on, and focus search is performed. If focusing failure occurs, focus search
is repeated until focusing is attained.

When the following operation keys are pressed in this state, the following operations are performed.

"POWER" ................The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode.

"FF/FWD" ................While this key is held down, the pickup slides to the external periphery.

"REW/REV" .............While this key is held down, the pickup slides to the internal periphery. However, if PU-IN is on, entry is

.................................invalid.

"PLAY".....................If focusing has been attained, the process proceeds to Step 4. Unless focusing has been attained,

.................................reception is inhibited.

"STOP" ....................Return to Step 1

4. Step 4 Mode

The disc is rotated and CLV is locked while the tracking servo is off.

The time display indicates always "0:00".

When the following operation keys are pressed in this state, thefollowing operations are performed.

"POWER" ................The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode.

"FF/FWD" ................While this key is held down, the pickup slides to the external periphery.

"REW/REV" .............While this key is pressed, the pickup slides to the internal periphery. However, if PU-IN is on, entry is

.................................invalid.

"PLAY".....................Shift to Step 5

"STOP" ....................Return to Step 1

– 12 –

XL-505/505C,CP-505B

5. Step 5 Mode
The tracking servo is turned on, groove is traced, mute is set to off, and playback is started. Even when the outermost
periphery of disc is reached in playback mode, it does not stop. The LCD display indicates playback lapse time as in case
of regular CD playback.

When the following operation keys are pressed in this state, the following operations are performed.

"POWER" ................The Test Mode is set to off, power is turned off, and the mode is changed to the regular standby mode.

"FF/FWD" ................While this key is held down, the pickup slides to the external periphery.

"REW/REV" .............While this key is held down, the pickup slides to the internal periphery. However, if PU-IN is on, entry is

.................................invalid.

"PLAY".....................Invalid

"STOP" ....................Return to Step 1

Other cautions

• While the CD lid OPEN is detected, entry into any step later than Step 2 is disabled. If CD lid OPEN is detected in any step

higher than Step 2, return to Step 1 is done.

• TOC IL is not performed in the Test Mode.

• The key operation, excepting that specified above, is the same as that of regular operation (CD). Only the FUNCTION key

is input-inhibited.

• Syncro REC with REC key input is also invalid in this mode.

3. Tuner Test Mode (TEST 3)

1. Outline of tuner (radio) Test Mode

The tuner Test Mode is intended to store adjustment/measurement frequency in the preset memory CH without frequency
adjustment by the adjusting personnel when the tuner is adjusted in the production line.

2. Details of tuner Test Mode

When power is turned on with the POWER key while the MEMORY/SET key and BAND key are held down together in
POWER OFF state, the frequency for adjustment/measurement of specific destination specified by the AREA terminal is
preset-stored in the preset memory CH (the frequency to be preset-stored for specific destination is explained in the Item
C). When the tuner Test Mode is started up, it is started with FM. FM is FM STEREO only.
When the REW key is pressed while the preset memory CH is 1CH, the highest CH is found as in case of regular mode. When
the FF key is pressed while the preset memory CH is highest CH, 1CH is found.
The RADIO (TUNER) BAND key (or TUNER/BAND key on the remote controller) is valid.
As in case of regular mode, selection of band, FM MONO/STEREO mode is enabled by pressing the RADIO (TUNER) BAND
(or TUNER/BAND ) key.
Exiting the tuner Test Mode, When the destruction data is stored in the memory in the tuner Test Mode, AC supply is
interrupted in the Test Mode and the AC supply is recovered, all the memory is cleared with the destruction data in case of
start-up.
(Countermeasures so that the Test Mode memory does not remain when AC supply is restored after power supply failure
occurred once in the Test Mode.) The memory is not cleared when AC supply is turned off after POWER OFF and FUNCTION
selection. In case of exit from the tuner Test Mode through the backup mode upon occurrence of power failure
the frequency data stored in the preset memory for adjustment/measurement is erased. (As a result the preset
memory CH becomes empty.)

The display indication is the same as that in case of regular operation.
The following display lights for one second when the tuner TEST mode is turned on

– 13 –

XL-505/505C,CP-505B

Test Mode operation specification

3. Preset frequencies for various destinations (random preset memory)

BAND (CH)

1 FM 87.5MHz
2 FM 108.0MHz
3 FM 98.0MHz
4 FM 90.0MHz
5 FM 106.0MHz

6 AM 530 kHz
7 AM 1720 kHz
8 AM 990 kHz
9 AM 600 kHz

10 AM 1400 kHz

• The unit used in the table above is Hz. K represents 1,000 times, and M represents 1,000,000 times.

• The hatched data shown in the table are not stored in the memory.

• FM is stereo mode.
Note: Keys which are effective in Test Mode

• Main unit keys: VOLUME UP/DOWN, BAND, TUNING UP, POWER, MEMORY, CLEAR,
PRESET UP/DOWN

• Remote controller keys:

4. Electronic volume Test Mode (TEST 4)

After the Test Mode is set, the following display lights for one second.

VOL UP/DOWN, BAND, TUNING UP/DOWN, POWER, MEMORY, CLEAR, PRESET UP/DOWN

When this mode has been set, -14dB (STEP17) is set, the preset equalizer is set to FLAT (EQ-3), the SRS mode is set to OFF,
and the start-up function is set to Tape.

1. The display is the same as that indicated in case of regular operation excepting when Test Mode is set.

2. The volume control with the Volume UP/DOWN key is only the following 3 steps, differing from the volume control in the regular
operation mode.
Volume — ∞ (STEP 0) Volume — 14dB (STEP 17) Volume — 0 (STEP 24)

3. The preset equalizer and SRS are switched if key operation is performed.

5. Timer Test Mode (TEST 5)

When the Test Mode is set, the following display lights for one second.

The current time and timer time are set in the following procedure, and timer playback is performed.

1. The present time is set to 1:00, the timer is set to ON time 1:02, OFF time 1:12, Function is set to Tape, Volume is set to STEP8.

One minute is counted in increments of second, and timer playback is performed. One step of Fade-in/out in this mode is
performed for 0.5 sec.
The display is the same as that appears in the regular timer operation.

2. After completion of timer playback test "TEST-5" indication (which appears when the mode is set) appears again and Standby

state is set. PLAY key entry is waited. If an entry is detected, the SLEEP timer is set to 2 minutes, and Function is set to
Tape, so that playback is started at once. Volume is set to STEP8, and 10 seconds are counted down in decrements of
second. One step of Fade-out is 0.5 sec.
The display is the same as that appears in the regular sleep playback mode.

3. After completion of SLEEP test, the Test Mode is turned off, and regular standby mode is set, so that the Test Mode ends.

– 14 –

XL-505/505C,CP-505B

6. LCD Test Mode (TEST 6)

When the LCD Test Mode is set, all the LCD segments light.

7. Key input diagnosis Test Mode (TEST A)

When the Test Mode is set, the following display appears.

In this Test Mode checking as to whether all the main unit keys can be detected is performed. Accordingly, when this mode
is set, checking is performed so as to examine whether the POWER key was pressed last after all the following keys were
pressed. If the result is OK, the following OK is displayed. If any one of keys was not pressed, an error is indicated. When the
POWER key is pressed, exit from the mode is made irrespective of whether the termination is normal or abnormal, and the
standby mode is set.
All the models using this microcomputer do not have the same keys. The entry of the following keys is detected depending on
the combination of simultaneously pressed keys when this mode is set. Key pressing order is not fixed. Pressing of all keys
must be detected.

1. In case of "PLAY" + "REC PAUSE"
Since the model does not have RDS and SRS, all the keys to be detected are the following 11 keys.
PLAY, VOL , VOL , BAND, G-EQ, FUNCTION, MEMORY/SET, REC PAUSE, REW/REV, FF/FWD, STOP

<

<

OK/NG indication of test result must be as follows.

NG indication

OK indication

– 15 –

XL-505/505C,CP-505B

TSO

LED704-LED712

FW701

SWITCHING

Q701

RESET

Q702
Q703

µ-CON +5V

RX701

321

KEY

SW702-SW707
SW710-SW714
SW718

X701
8MHz

X702

32.768KHz

SYS STOP
REMOCON
RESET

M+12V

Q704 Q705

SWTCHING

LCD

LCD701

~

COM3

1

~

~

4

COM0

5

VLC3

9

OSC2

10

OSC1

11

VSS
XI

12
13

XO

14

MMOD

15

VREF

17

KEY1

~

~

19

POWER

21

F.P

~

~

23

CAM SW

~

DI

CE

25 31 32 34 35 36 37 38 39 40 41 45 46 47 48

~

IC701

IX0189AW

SYSTEM

MICROCOMPUTER

P-CONT

P-MUTE

RESET

CD+B

REMOCON

CLE

SYS STOP

SEG7

STEREO

FW702

7493

~

SEG26

62

BUS3

~

~

57

PU-IN

56

LID-SW

55

BIAS

54

B-CAN

53

REC

52

MOT

CEE

BUCK

R-MUTE

SOL

51

SD

CD RES

IC804 : FOCUS/TRACKING/

TR+
FO+
FO–
TR–

ACTUATOR

1/2VCC

C
F
B
A

E
GND
MON

LD

VCC

SL+

SL–

18 17 16 15 14 13 12 11 10

NC

VCC

Reg5V

–

+

–

+

–

+

19 20 21 22 23 24 25 26 27

SPIN/SLIDE DRIVER

LEVEL
SHIFT

LEVEL
SHIFT

– –

++

–

++

––

987654321

GND

+

GND

28 29 30 31 32 33 34 35 36

DMEO

SP+

SP–

+

SP+

M

SP–

–

SL+

+

SL–

M

PU-IN

–

GND

TR–

1

TR+

2

FO+

3

FO–

4

GND

5

PD

6

VR

7

LD

8

C

1

F

2

B

3

A

4

E

5

1/2V

6

+5V

7

SPINDLE

C4A

M801

SLED

M802

SW801

PU-IN

VR1A

C2A C3A

SWITCHING

TR–

TR+

––

++

LEVEL
SHIFT

LEVEL
SHIFT

++

––

VCC

FO+

FO–

6

6

5

5

4

4

3

3

2

2

1

1

CNP803

CNS803

CNS801

11

55

CNS802

11

55

GAIN1

–

+

–

+

GAIN4

FSO

6
5
4
3
2
1

22
33
44

66
77
88

22
33
44

66
77

FMSO

TS2O

NC

STAND

BI803

BI801

BI802

T.S.D

Q707

-BY

GND

TR–
TR+
FO+
FO–
GND
PD
VR
LD

+–

PU-IN

1/2VCC

+5V

A 12V
LED+B

IC804
M56748FP

CD STB

SP+
SP–
SL+
SL–

P CONT

Q706

SWITCHING

SWTCHING

+5V

Q801

Figure 16 BLOCK DIAGRAM (1/4)

– 16 –

DMEN

TPI

DMEP

TNI

TRACKING
ERROR
BLANCE
VR802

SEL

TNO

DMEO

DFCT

25

FMSO

26

FMSM

27

FMSP

28

THLD

29

TS2O

30

TS2N

31

TS2P

32

TS1N

33

TS1P

34

TSO

35

TEL1

36

TEL2

37

TSN

38

39 40 41 42 43 44 45 46 47 48

TPO

LDO
PD

CD+5V

VCC

FNI

GND

OSCI

FPI

LDO

COSC

MDI

15161718192021222324

FSO

FSN

RFT

RFN

SERVO AMP.

14

FEL2

13

FEL1

12

FHLD
FEI

11

10

FEO

FEN

9

FEP

8

DFIN

7

SBAD

6

RFRP

5

2VRO

4

VRO

3

RFI

2

RFO

1

IC801

TA2065F

FOCUS
OFFSET

VR803

TE