Sharp XL1700 Service Manual

XL-1700/1700C

SERVICE MANUAL

No. S4221XL1700//

COMP ACT AUDIO SYSTEM

MODEL XL-1700

XL-1700 Compact Audio System consisting of XL-1700 (main unit) and CP-XL1700U (speaker system).

MODEL XL-1700C

XL-1700C Compact Audio System consisting of XL-1700C (main unit) and CP-XL1700U (speaker system).

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

CONTENTS

Page

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ..................................................................................................... 2

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

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

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

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

REMOVING AND REINSTALLING THE MAIN PARTS.................................................................................................... 9

ADJUSTMENT................................................................................................................................................................ 10

TEST MODE ................................................................................................................................................................... 11

NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 18

TYPES OF TRANSISTOR AND LED.............................................................................................................................. 18

BLOCK DIAGRAM .......................................................................................................................................................... 19

SCHEMATIC DIAGRAM ................................................................................................................................................. 22

WIRING SIDE OF P.W.BOARD...................................................................................................................................... 30

WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 34

TROUBLESHOOTING.................................................................................................................................................... 35

FUNCTION TABLE OF IC .............................................................................................................................................. 41

LCD SEGMENT .............................................................................................................................................................. 43

PARTS GUIDE/EXPLODED VIEW PACKING OF THE SET (FOR U.S.A. 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-1700/1700C

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

TEST PROBE

0.15 µ F

1.5k ohms 10W

VTVM

AC SCALE

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

IMPORTANT SERVICE NOTES (FOR U.S.A. 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.

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.

■

Power source Power consump-

tion Dimensio ns

Weight

■

Output power

Output terminals

Input terminals

■

Output power Output terminals

Input terminals

General

Amplifier

SPECIFICATIONS

AC 120 V, 60 Hz 35 W

Width: 8-15/16" (226 mm) Height: 5-3/4" (145 mm) Depth: 11-1/2" (292 mm)

6.2 lbs. (2.8 kg)

XL-1700

8 watts minimum RMS per channel into 8 ohms from 100 Hz to 20 kHz, 10% total harmonic distortion

Speakers: 8 ohms Headphones: 16 - 50 ohms (recommended:

32 ohms) CD digital output (optical) Subwoofer (Audio signal): 500 mV/47 k

ohms Video/Auxiliary (audio signal): 500 mV/47 k

ohms

XL-1700C

RMS: 20 W (10 W + 10 W) (10 % T.H.D.) Speakers: 8 ohms Headphones: 16 - 50 ohms (recommended:

32 ohms) CD digital output (optical) Subwoofer (Audio signal): 500 mV/47 k

ohms Video/Auxiliary (audio signal): 500 mV/47 k

ohms

CD player

■

Type Signal readout

D/A converter Frequency re-

sponse Dynamic range

Tuner

■

Frequency range

Speaker

■

Type

Maximum input power

Rated input power Impedance Dimensions

Weight

Compact disc player Non-contact, 3-beam semiconductor laser

pickup 1-bit D/A converter 20 - 20,000 Hz

90 dB (1 kHz)

FM: 87.5 - 108 MHz AM: 530 - 1,720 kHz

2-way type speaker system Tweeter 4" (10 cm) Woofer 20 W

10 W 8 ohms Width: 5-3/4" (146 mm)

Height: 10-9/16" (267 mm) Depth: 7-3/8" (186 mm)

3.5 lbs. (1.6 kg)/each

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

– 2 –

NAMES OF PARTS

■

Front panel

XL-1700/1700C

2 3 4

5 6

1.CD Compartment

2.CD Open/Close Button

3.Power Button

4.Function Selector Button

5.Bass/Treble Selector Button

6.Memory/Set Button

7.Clear Button

8.CD Stop, Tuning Down Button

9.CD Track Up or Fast Forward, Tuner Preset Up Button

10.CD Track Down or Fast Reverse, Tuner Preset Down Button

11.Volume Up and Down Buttons

12.CD Play or Pause, Tuning Up Button

■

Display

1.Timer Play Indic a tor

2.Sleep Indicator

3.CD Random Play Indicator

4.Memory Indicator

5.FM Stereo Mode Indicator

6.CD Play Indicator

7.CD Repeat Play Indicator

8.FM Stereo Receiving Indicator

9.Surround Indicator

6 7

1 2

3 4 5 6

■

Rear panel

1.Subwoofer Output Jack

2.CD Digital Output Jack

3.Headphone Jack

4.AM Antenna Terminal

5.Antenna Earth Terminal

6.FM 75 Ohms Antenna Jack

7.Video/Auxiliary (Audio Signal) Input Jacks

8.Speaker Terminals

9.AC P ower Input Jack

■

Speaker system

1.Tweeter

2.Woofer

3.Bass Reflex Duct

4.Speaker Terminals

7 8

Speaker grilles are removable:

Make sure nothing comes into contact with the speaker diaphragms when you remove the speaker grilles.

Placing the speaker system: Left speaker Right speaker

There is no distinction between the right and the left speakers.

Notes:

●

The speakers are magnetically shielded. Therefore, they do not affect the display even if you use them near the TV. However, some color variation may occur, depending on the type of TV used.

If color variation occurs...

Turn off the TV (from the power switch). After 15 - 30 minutes, turn the TV on again.

If the color variation is still present...

Move the speakers further away from the TV.

●

If any kind of magnet or an electromagnet is placed too close to the TV and the system, irregular colors may appear on the TV screen.

– 3 –

XL-1700/1700C

1 2

3 4

5 6

7 8

11 12

13 14

15 16

17 18

24 25

26 27

22 23

■

Remote control

Remote Control Transmitter

Power Button

CD Button

Tuner Button

5.Timer Button

6.Clock Button

Memory Button

8.Dimmer Button

9.Surround Button

Volume Up and Down Buttons

10.

Video/Auxi liary Button

11.

Band Selector Button

12.

Clear Button

13.

14.Sleep Button

15.Random/Repeat Button

CD Open/Close Button

16.

Tuner Preset Up Button

17.

CD Track Down Button

18.

CD Fast Reverse, Tuning Down Button

19.

CD Play Button

20.

CD Track Up Button

21.

CD Fast Forward, Tuning Up Button

22.

CD Pause Button

23.

CD Stop Button

24.

Tuner Preset Down Button

25.

Bass Up and Down Buttons

26.

Treble Up and Down Buttons

27.

Buttons with " " mark in the illustration can be operated on the remote control only.

– 4 –

OPERATION MANUAL

■

If trouble occurs

When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction.

If such a problem occurs, do the following:

Caution:

This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD program.

Troubleshooting Chart

1 Set the unit to the stand-by mode and turn the power on

again.

2 If the unit is not restored in step 1, unplug and plug in the

unit, and then turn the power on.

3 If neither step 1 nor 2 restores the unit, do the following:

Press the POWER button to enter the power stand-by mode. Unplug the AC power cord from the AC INPUT jack on the unit. While pressing down the MEMORY/SET button and the button, plug the AC power cord into the AC INPUT jack on the unit.

AC INPUT

Setting the clock

This may be operated only with the remote control. In this example, the clock is set for the 12-hour (AM12:00) display.

Press the CLOCK button and within 3 seconds, pres s the MEMORY button.

Within 1 minute, press the PRESET ( or ) button to select 12-hour or 24-hour d isplay and then press the

MEMORY button.

"AM 12:00" The 12-hour display will appear. (AM 12:00 - PM 11:59) "0:00" The 24-hour display will appear.

(0:00 - 23:59)

Note that this can only be set when the unit is first installed or it has been reset.

XL-1700/1700C

Within 1 minute, press the PRESET ( or ) button to adjust the hour and then press the MEMORY button.

When the 12-hour display is selected, "AM" will change automatically to "PM".

Within 1 minute, press the PRESET ( or ) button to adjust the minutes and then press the MEMORY button.

The clock starts from "0" second. (Seconds are not displayed.)

To confirm the time display when the power is on:

Press the CLOCK button. The time display will appear for about 5 seconds.

Note:

The time will flash at the push of the CLOCK button when the AC power supply is restored after a power failure or unplugging the unit. Readjust the clock as follows.

To readjust the clock:

Perform "Setting the clock" from the beginning. If the time display is flashing, step 2 (for selecting the 12-hour or 24-hour display) will be skipped.

To change the 12-hour or 24-hour display:

1 Clear all the programmed contents. 2 Perform "Setting the clock" from the beginning.

Remote control

■

Test of the remote control

Face the remote control directly to the remote sensor on the unit.

The remote control can be used within the range shown belo w:

Press the POWER button. Does the power turn on? Now, you can enjoy your music.

Remote sensor

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

– 5 –

XL-1700/1700C

Press the POWER button to turn the power on.

Pulse el botón POWER para conectar la alimentación.

Listening to a CD

Audición de un disco CD

Turn on your system

Conexión de la alimentación de su sistema

Press the FUNCTION button until “CD STOP” appears on the display.

If no disc is loaded, the display will be “NO DISC” instead of “CD STOP”.

Pulse el botón FUNCTION hasta que aparezca “CD STOP” en el visualizador.

Si no hay ningún disco insertado, se visualizará “NO DISC” en lugar de “CD STOP”.

Press the

7 7

7 OPEN/CLOSE

button to open the CD compartment.

Pulse el botón

7 7

OPEN/ CLOSE para abrir el compartimiento del CD.

Place a CD on the spindle, label side up.

Ponga un CD sobre el eje, con la cara de la etiqueta arriba.

Press the

7 7

7 OPEN/CLOSE

button to close the CD compartment.

The CD playback will start automatically.

Pulse el botón

7 7

OPEN/ CLOSE para cerrar el compartimiento del CD. La reproducción del CD se iniciará automáticamente.

FM stereo mode indicator

Indicador del modo de FM en estéreo

FM stereo receiving indicator

Indicador de recepción de FM en estéreo

Press the FUNCTION button until “FM” or “AM” appears on the display.

Pulse el botón FUNCTION hasta que “FM” o “AM” aparezca en el visualizador.

Press the TUNING (

X or

button to tune in to the desired station. When the TUNING button is pressed for more than 0.5 seconds, scanning will start automatically and the tuner will stop at the first receivable broadcast station.

Pulse el botón TUNING (X o

) para sintonizar la emisora deseada. Cuando se pulse el botón TUNING durante más de 0,5 segundos, la exploración se iniciará automáticamente y el sintonizador se parará en la primera emisora difusora que pueda recibirse.

To receive an FM stereo transmission: Press the FUNCTION button to display the “ST” indicator.

● “

j” will appear when an FM

broadcast is in stereo.

Para recibir una transmisión de FM en estéreo: Pulse el botón FUNCTION para visualizar el indicador “ST”.

●

“j” aparecerá cuando una difusión de FM sea en estéreo.

Listening to the radio

Audición de la radio

Accessories

Accesorios

AC power cord x1

Cable de alimentación de CA x1

FM antenna x1

Antena de FM x1

Battery installation of remote control

Instalación de las pilas del controlador remoto

Use 2 “AAA” size batteries (UM-4, R03, HP-16 or similar).

Use dos pilas del tamaño “AAA” (UM-4, R03, HP-16 o equivalentes).

Remove the battery

123

cover.

Extraiga la cubierta de las pilas.

System connections

Conexiones del sistema

FM antenna

Antena de FM

Remote control x1

Controlador remoto x1

Insert the batteries as shown.

Inserte las pilas como se muestra.

AM loop antenna

Antena de cuadro de AM

AM loop antenna x1

Antena de cuadro de AM x1

Speaker wire x2

Cable del altavoz x2

Batteries are not included.

Las pilas no están incluidas.

Replace the cover.

Vuelva a colocar la cubierta.

Right speaker

Altavoz derecho

Headphones

Auriculares

Right speaker

Altavoz derecho

VCR, DVD, etc.

Videograbadora, DVD, etc.

White line

Línea blanca

Black

Negro

Speaker with a built-in amplifier

Altavoz con amplificador incorporado

To the line output jack

A la toma de salida de línea

RCA cord (not supplied)

Cable RCA (no suministrado)

Left speaker

Altavoz izquierdo

Left speaker

Altavoz izquierdo

Connection cable for digital recording (not supplied)

Cable de conexión para grabación digital (no suministrado)

AC outlet (AC 120 V, 60 Hz)

A un tomacorriente de CA (120 V de CA, 60 Hz)

MD recorder

Grabadora de MD

To the optical line input jack

Para la toma de entrada de línea óptica

– 6 –

Cover, Rear Panel

Top Cabinet

(A2) x8

(A2) x1

Bottom Cabinet

(A1) x2 ø3 x10mm

,

Hook (C3) x4

(C1) x5 ø3 x6mm

Bottom Cabinet

Chassis

Bottom Cabinet

Chassis

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 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 to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling.

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

STEP

REMOVAL

1 Top Cabinet 1. Screw .................. (A1) x4 7-1,2

2 Cover,Rear panel 1. Screw .................. (B1) x3 7-1

3 Chassis 1. Screw .................. (C1) x5 7-3

4 Tuner PWB 1. Screw .................. (D1) x1 8-1

5 Terminal PWB 1. Screw .................. (E1) x2 8-1

6 Rear Panel 1. Screw .................. (F1) x1 8-1

7 Main PWB 1. Screw .................. (G1) x5 8-1

8 CD PWB 1. Flat Cable............ (H1) x1 8-2

9 CD Mechanism 1. Screw .................. (J1) x4 8-2

10 LED PWB 1. Screw .................. (K1) x2 8-2

11 Switch PWB 1. Hook.................... (L1) x2 8-3

12 Display PWB 1. Screw .................. (M1) x6 8-3

13 Gear Box 1. Hook .................... (N1) x3 8-3

Note:

After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of connector remove to protect the optical pickup from electrostatic damage.

PROCEDURE

FIGURE

2. Socket ................. (A2) x9 7-2

2. Screw .................. (C2) x4 7-1

3. Hook .................... (C3) x4 7-3

2. Socket ................. (D2) x1

2. Socket ................. (E2) x2

2. Screw .................. (G2) x2

3. Socket ................. (G3) x2

2. Socket ................. (H2) x2

3. Screw .................. (H3) x4

2. Socket ................. (L2) x1

2. Socket ................. (M2) x1

(A1) x2 ø3 x10mm

(B1) x1 ø3 x10mm

(B1) x1 ø3 x6mm

Top Cabinet

(C2) x4 ø3 x10mm

(B1) x1 ø3 x10mm

Figure 7-1

Figure 7-2

XL-1700/1700C

Cover, Rear Panel

Figure 7-3

– 7 –

XL-1700/1700C

Display PWB

CD Mechanism

Top Cabinet

Holder PWB

CD PWB

LED PWB

Holder, Indicator Panel,CD

(J1) x4 ø2.5 x10mm

(H1) x1

(H2) x1

(H3) x4 ø2.5 x10mm

(K1) x2 ø2.5 x10mm

,

( A3 ) x4 ø3.5 x12mm

Tweeter

Net Frame ( A1 ) x1

Front Panel ( A2 ) x1

Woofer

Screwdriver

(G3) x2

(E2) x1

(G1) x5 ø3 x8mm

(E2) x1

(G2) x2 ø3 x10mm

(E1) x2 ø3 x10mm

Terminal PWB

Rear Panel

(F1) x1 ø3 x6mm

(D1) x1 ø3 x10mm

Main PWB

Switch PWB

Switch

Pull

Hook (L1) x2

Switch PWB

Pull

(L2) x1

Figure 8-1

Gear Box

Chassis

Gear Box

Pull

Hook (N1) x3

Top Cabinet

Pull

(D2) x1

Tuner PWB

(M2) x1

(M1) x6 ø2.5 x10mm

Display PWB

Figure 8-2

Figure 8-3

STEP REMOVAL

1 Speaker 1. Net Frame ........... (A1) x1 8-4

PROCEDURE

2. Front Panel ......... (A2) x1

3. Screw .................. (A3) x4

FIGURE

Figure 8-4

– 8 –

REMOVING AND REINSTALLING THE MAIN PARTS

(A1) x2 ø2 x3mm

Hook (A2) x3

CD Lid Motor

Worm Wheel

How to remove the CD lid (See Fig. 9-1.)

Perform steps 1 to 13 of the disassembly method to remove

the gear box.(See page 7,8)

1. Remove the screws (A1) x 2 pcs., to remove the CD lid motor.

2. Remove the hooks (A2) x 3 pcs., to remove the worm wheel.

Caution:

Be careful so that the gear is not damaged. (The damage gear emits noise during searching.)

XL-1700/1700C

CD MECHANISM SECTION (See Fig. 9-2.)

Perform steps 1 to 9 of the disassembly method to remove the CD mechanism.(See page 7,8)

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 unit.

Note:

After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of connector remove to pretect the optical pickup from electrostatic damage.

(A1) x4

Figure 9-1

Mechanism Cover

(A2) x2 ø2.6 x6mm

CD Mechanism

Shaft (A3) x1

Gear (A5) x1

Stop Washer (A4) x1

Pickup unit

Figure 9-2

– 9 –

XL-1700/1700C

ADJUSTMENT

TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Frequency

AM IF 450 kHz 1,620 kHz T351 *1

AM Band — 522 kHz (fL): T306 *2

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

Tracking

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

• Setting the Test Mode

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

Preset No.

1 87.50 MHz 6 522 kHz 2 108.00 MHz 7 1,620 kHz 3 98.00 MHz 8 990 kHz 4 90.00 MHz 9 603 kHz 5 106.00 MHz 10 1,404 kHz

Frequency Display

Setting/

Adjusting

Preset No.

Instrument

Connection

Parts

• FM Mute Level

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

Frequency

98.00 MHz 98.00 MHz VR351*1 Input: SO301 (30 dBµV) Output: Speaker

Display

Adjusting

Parts

Instrument

Connection

Terminal

*1. Adjust so that an output signal appears.

• Check FM VT

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

Frequency

87.5 MHz 87.5 MHz 2.2 V ± 0.7 V TP301 108 MHz 108 MHz 7.3 V ± 1.0 V TP301

Display

Check Point Instrument

Connection

ANTENNA TERMINAL

TP301

SO301

OHMS

IC302

FM Mute Level

TUNER PWB-B1

AMGND

FE301

VR351

T351

AM IF

T302

AM Tracking fL

T306

AM Band Coverage fL

IC303

Figure 10 ADJUSTMENT POINTS

– 10 –

XL-1700/1700C

TEST MODE

The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement, the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection.

1. Turning on the test mode

For obtaining each test mode, press the POWER button, while keeping pressing the following two buttons in the ordinary standby mode (power off ). In this case, the main unit buttons are valid. When turning the POWER on with remote control buttons, test modes are not obtained.

[Ordinary test mode]

1. CD Test Mode (TEST 1).....................................BASS/TREBLE + STOP

2. Tuner Test Mode (TEST 2).................................BASS/TREBLE + VOL+

3. Electronic Volume Test Mode (TEST 3)............. BASS/TREBLE + VOL–

4. Timer Test Mode (TEST 4).................................MEMORY/SET + STOP

5. LCD Test Mode (TEST 5)...................................MEMORY/SET + VOL–

6. Electric CD Lid Aging Test Mode (TEST 8)........ MEMORY/SET + VOL+

[Self-diagnosis Test Mode]

1. Button input diagnosis test mode (TEST6).…....MEMORY/SET + PLAY

Processes are different depending on destinations at initial settings.

2. CD Test Mode (TEST 1)

In the CD test mode the operation of each step is possible even if the LID-SW is off. If focus cannot be taken in step 3 or any error is processed, it is impossible to proceed to the next step. During error processing, end the test mode by pressing the POWER button or return to the step 1 by pressing the CD STOP button. Any other operations are inhibited.

1. Step 1 Mode

When the CD test mode is obtained, the following display lights up. Then CD initialization operation flow proceeds up to CD STB off to wait for the following buttons to be pressed.

One second after display lights up

Press the following buttons in this state to obtain the operations specified below.

"POWER".................Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD".................After the pickup returns to the innermost periphery, it slides toward the outer periphery while this button

is pressed.

"REW/REV"..............After the pickup returns to the innermost periphery, it slides toward the inner periphery while this button

is pressed. If PICKUP IN is on, input is invalid.

"PLAY" .....................Shift to step 2

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

"FUNCTION"............Shift to step 5

* In case of initialization, the pickup is moved toward the inner periphery. Any buttons other than "POWER" button are not

accepted until the shift of pickup to the inner periphery is completed at this time. If PICKUP IN SW ON cannot be detected within 10 seconds, the slide motor stops, and the following error display appears. Press the POWER button to end the test mode, or press the CD STOP button to return to step 1. Any other operations are inhibited.

– 11 –

XL-1700/1700C

2. Step 2 Mode

Press the "CD PLAY" button in this mode to transmit the laser lighting command LDON (8400) and turn on the laser. Any other operations are not performed in this case.

Press the following buttons in this state to obtain the operations specified below.

"POWER" ................ Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.

"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is

invalid.

"PLAY".....................Shift to step 3

"STOP" ....................Return to step 1

"FUNCTION" ...........Shift to step 5

3. Step 3 Mode

While the laser keeps lighting, CD initialization operation flow proceeds up to 'CLV servo ON' to wait for the following buttons to be pressed.(Focus servo turned on for focus search) The focus search is repeated to take focus.

Press the following buttons in this state to obtain the operations specified below.

"POWER" ................Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.

"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is

invalid.

"PLAY".....................If focus has been taken, shift to step 4 is executed. If not, acceptance is inhibited.

"STOP" ....................Return to step 1

"FUNCTION" ...........Shift to step 5

*If the focus is not received after it has been taken, the process returns to step 1.

4. Step 4 Mode

The CLV servo ON command (8600) is transmitted to wait for the following buttons to be pressed. (The disc is rotated for CLV lock.)

The time display always indicates "0:00".

Press the following buttons in this state to obtain the operations specified below.

"POWER" ................Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD" ................The pickup slides toward the outer periphery while this button is pressed.

"REW/REV" .............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is

invalid.

"PLAY".....................Shift to step 5

"STOP" ....................Return to step 1

"FUNCTION" ...........Shift to step 5

*If the focus is not received, the process returns to step 1.

– 12 –

XL-1700/1700C

5. Step 5 Mode

When the CD initialization operation flow is completed, the mute is turned off, and playback is started. Even if playback reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback passage time as in case of ordinary CD playback.

Press the following buttons in this state to obtain the operations specified below.

"POWER".................Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.

"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is

invalid.

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

"STOP".....................Return to step 1

"FUNCTION" ...........Shift to step 6

"MEMORY"..............Shift to step 7

*If the is not received, the process returns to step 1. Other cautions

• TOC IL is not available for this test mode.

6. Step 6 Mode

Press the FUNCTION button during step 5 operation to set EC/FC bit to "H" by PROSET command (9188 transmission) and to monitor BUS2 (QDRE) during idle mode. The number of errors for 1 frame (1 sub-code block in IC data) is read by read command SRC6 during "H". The number of errors accumulated in 750 frames for 10 seconds is displayed on LCD. During the display, music signal is played back.

Press the following buttons in this state to obtain the operations specified below.

"POWER".................Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.

"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is

invalid.

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

"STOP".....................Return to step 1

"FUNCTION" ...........Shift to step 5

"MEMORY"..............Shift to step 7

Press FF/PRESET UP or REW/PRESET DOWN button to slide the pickup. The number of errors accumulated up to that time is cleared and addition is restarted after shift.

*If the focus is not received, the process returns to step 1.

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XL-1700/1700C

7. Step 7 Mode

Press "MEMORY" key during step 6 operation to display automatically adjusted values on LCD in the order as below. Item names are displayed by left alignment, and adjusted values by right alignment in hexadecimal numbers. Operations other than display are as same as those for step 5.

a) "Fb" is displayed on the left of LCD. FTBAST command (D480) is transmitted to designate focus balance adjusting

register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation is shifted to (b).

b) "FG" is displayed on the left of LCD. FTBAST command (D481) is transmitted to designate focus gain adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. The upper two bits, which are invalid, are displayed as "00". After waiting two seconds, operation is shifted to (c).

c) "Tb" is displayed on the left of LCD. FTBAST command (D482) is transmitted to designate tracking balance adjusting

register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation is shifted to (d).

d) "TG" is displayed on the left of LCD. FTBAST command (D483) is transmitted to designate tracking gain adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. The upper two bits, which are invalid, are displayed as "00". After waiting 2 seconds, operation is shifted to (e).

e) "FO" is displayed on the left of LCD. FTBAST command (D484) is transmitted to designate focus offset adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation is shifted to (f).

f) "TO" is displayed on the left of LCD. FTBAST command (D485) is transmitted to designate tracking offset adjusting

register. Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation is shifted to (g).

g) "FF" is displayed on the left of LCD. FTBAST command (D486) is transmitted to designate RF amplitude adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers. After waiting 2 seconds, operation is shifted to (a).

Press the following buttons in this state to obtain the operations specified below.

"POWER".................Test mode and power turned off to shift to the ordinary standby mode.

"FF/FWD".................The pickup slides toward the outer periphery while this button is pressed.

"REW/REV"..............The pickup slides toward the inner periphery while this button is pressed. If PICKUP IN is on, input is

invalid.

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

"STOP".....................Return to step 1

"FUNCTION" ...........Shift to step 6

"MEMORY"..............Shift to step 5

*If the focus is not received, the process returns to step 1.

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XL-1700/1700C

3. Tuner Test Mode (TEST 2)

1. Outline of tuner (radio) test mode

The tuner test mode is intended to store the adjustment and measurement frequencies in the preset memory CH. When

adjusting the tuner section in the production line, adjusting personnel are not required to set frequency.

2. Details of tuner test mode

Press the "REW/PRESET DOWN" and "CD PLAY" buttons in POWER OFF state and turn on the power by the use of

"POWER" button to preset and store frequency for adjustment and measurement of destination specified by the AREA terminal in the preset memory CH. However, Ordinary 1 and Ordinary 2 are stored in the destinations (selected by SPAN switching operation) when the test mode is obtained.

" + "MEMORY/SET" KEY SPAN CHANGE)

("FF (As for frequencies to be preset and stored for each destination, refer to item 3.) The tuner test mode is started from preset No.1. The operations of test mode are identical with the ordinary operations of TUNER function. FUNCTION switching is invalid.

It is necessary to discard the content of preset memory when the tuner test mode is ended; be sure to write "0000" or "1111"

bits in the memory to be checked for judging memory error at initial setting and to initialize memory.

When the tuner test mode is obtained, the following display lights for one second.

• The TUNER TEST2 mode is obtained with >> + MEMORY + POWER. ->Turn off AC in the TEST2 mode to restore the initial state.

Turn off POWER to protect the memory of TEST2 mode. Turn off POWER again to obtain the ordinary operation while the data is stored in the memory (besides TUNER).

If AC OFF state is maintained in this state for about 1/2 day, start is executed in the initial state.

• To clear the whole memory, insert the AC cord, pressing MEMORY + CD PLAY.

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

1 FM 87.50 MHz 2 FM108.00 MHz 3 FM FM 98.00 MHz 4 STEREO FM 90.00 MHz 5 FM106.00 MHz

• The slant line sections of the table store no memory.

BAND

6 AM 522 kHz 7 AM1620 kHz 8 AM AM 990 kHz 9 AM 603 kHz 10 AM1404 kHz

AMCH

16-25 26 FM106.00 MHz

27 FM 90.00 MHz 28 FM FM 98.00 MHz 29 MONO FM108.00 MHz 30 FM 87.50 MHz

BAND

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XL-1700/1700C

4. Electronic volume Test Mode (TEST 3)

When this test mode is obtained, the following display lights for one second.

In this mode, volume is -14 dB (STEP28), BASS/TREBLE is set to 0 (0 dB) and SURROUND mode to OFF, and start-up function to CD, respectively. The button operations in the test mode are the same as those of ordinary operation except volume UP/ DOWN.

(1) The display is the same as that of ordinary operation except test mode setting. (2) Unlike the ordinary state, the volume is controlled with the volume UP/DOWN button in accordance with the following three

steps. Volume(3) BASS/TREBLE and SURROUND are switched when button is pressed..

5. Timer test Mode (TEST 4)

When this test mode is obtained, the following display lights for one second.

Set the current time and timer time according to the following procedure to reproduce the timer.

1.Set the current time to 1:00, the timer to ON time 1:05, the function to CD, and volume to STEP 12, respectively. One minute is counted as one second, and the timer is reproduced. The fade-in (when playback is started) is executed at a rate of one step for 1 sec. After completion of fade-in, the fade-out is executed at a rate of one step for 1 sec (WAIT 1 sec inserted).

After completion of fade-out, the power is turned off (after WAIT 1 sec), and the mode is shifted to the standby. The display during operation is the same as that of ordinary timer operation.

6. LCD Test Mode (TEST 5)

When the LCD test mode is obtained, all the LCD segments are lighted. Then pressing the "PLAY" button switches display as below.

Lighting of all segments Lighting of odd segments Lighting of even segments

∞ (STEP 0) <-> Volume-14 dB (STEP 23) <-> Volume-0 (STEP 30)

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XL-1700/1700C

7. Button input diagnosis Test Mode (TEST 6)

When the test mode is obtained, the following is displayed.

This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode, it is checked whether the "POWER" button was pressed after all the buttons shown below were pressed. If the result is OK, OK is displayed. If any one of keys was not pressed, an error is displayed. In both cases of OK termination or error termination, the mode is shifted to the standby mode if the "POWER" button is pressed subsequently.

All models using this type of microcomputer are not always provided with the same buttons. Since the buttons used are different depending on models, types of buttons to be used are determined by whether RDS, SURROUND, and an electric lid are available at the initial setting by MODEL port.

The order of buttons to be pressed is not determined. Accordingly, it is checked whether all buttons have been pressed.

1. PU-IN buttons: REW/PRESET DOWN + CD STOP Since this model is provided with SURROUND (HAVE OR NOT), RDS (HAVE OR NOT), and electric CD lid, the following 10 buttons are detected as all buttons. PLAY, BASS/TREBLE, FUNCTION, VOLUME UP/DOWN, MEMORY/SET, REW, FF, STOP, CD-OPEN/CLOSE

The OK/NG display of test result is as follows.

8. Electric CD lid Aging Test Mode (TEST 8) (Only for model with electric CD lid)

Outline OPEN/CLOSE operations of electric CD lid are repeated. The number of repeated times and time period are monitored. If the lid does not move to the regular position after the specified time, operation is stopped. When an error is detected by [CLID_PRO] during CLOSE, operation is also stopped.

a. POWER ON for function AUX

CD lid position is checked.

CLOSE position: Operation proceeds to the next process. Position other than CLOSE: After the lid moves to CLOSE, operation proceeds to the next process.

b. CD lid operation started

OPEN operation

WAIT 1 second CLOSE operation WAIT 1 second

c. Operations above are repeated.

Specified monitoring time

OPEN operation: 5 seconds CLOSE operation: 5 seconds

d. Display

OPEN>CLOSE is counted as 1. I to 59999 are counted; if the count is over 59999, display is returned to 0 to repeat counting.

Display when the lid does not move to the regular position after the specified time (Ex: Defective operation occurring in the middle of 1538.)

Highlight display of stop when an error is detected by [CLID-PRO] (Ex: Defective operation occurring in the middle of 1538.)

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