SHARP XL-1500W Service Manual

XL-1500W

SERVICE MANUAL

No. S6242XL1500W/

COMPACT AUDIO SYSTEM

MODEL XL-1500W

XL-1500W Compact Audio System consisting of XL-1500W (main unit) and CP-XL1500H (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
SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................	2
VOLTAGE SELECTION ....................................................................................................................................................	2
AC POWER CORD AND PLUG ADAPTOR .....................................................................................................................	2
SPECIFICATIONS ............................................................................................................................................................	3
NAMES OF PARTS ..........................................................................................................................................................	4
OPERATION MANUAL .....................................................................................................................................................	6
DISASSEMBLY .................................................................................................................................................................	8
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................	10
ADJUSTMENT ................................................................................................................................................................	11
TEST MODE ...................................................................................................................................................................	12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................	19
TYPES OF TRANSISTOR AND LED ..............................................................................................................................	19
WAVEFORMS OF CD CIRCUIT .....................................................................................................................................	20
BLOCK DIAGRAM ..........................................................................................................................................................	21
SCHEMATIC DIAGRAM .................................................................................................................................................	24
WIRING SIDE OF P.W.BOARD ......................................................................................................................................	32
TROUBLESHOOTING ....................................................................................................................................................	36
FUNCTION TABLE OF IC ..............................................................................................................................................	42
LCD SEGMENT ..............................................................................................................................................................	44
PARTS GUIDE/EXPLODED VIEW

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

XL-1500W

SAFETY PRECAUTION FOR SERVICE MANUAL

This product is classified as a CLASS 1 LASER PRODUCT.

Precaution to be taken when replacing and servicing the Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output is less than Class 1 but the laser component is capable of emitting radiation exceeding the limit for Class1. Therefore it is important that the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.

(1)When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.

(2)The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping.

(3)No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.

(4)Under no circumstances look directly into the Pickup Lens at any time.

(5)CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Laser Diode Properties Material: GaAIAs Wavelength: 780 nm Emission Duration: continuous Laser Output: max. 0.6 mW

VOLTAGE SELECTION

Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage as follows, Turn the selector with a screwdriver unit the appropriate voltage number appears in the window (110 V,127 V, 220 V or 230 V - 240 V AC).

AC POWER CORD AND PLUG ADAPTOR

QACCA0002SJ00						QACCE0002SJZZ

QACCB0003SJ00

QACCL0002SJ00

– 2 –

XL-1500W

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

SPECIFICATIONS

■ General

Power source	AC 110, 127, 220, 230 - 240 V, 50/60 Hz
Power consump-	30 W
tion
Dimensions	Width: 226 mm (8-15/16")
	Height: 145 mm (5-3/4")
	Depth: 292 mm (11-1/2")
Weight	3.3 kg (7.3 lbs.)

■ Amplifier

Output power	MPO: 30 W (15 W + 15 W) (10 % T.H.D.)
	RMS: 20 W (10 W + 10 W) (10 % T.H.D.)
Output terminals	Speakers: 8 ohms
	Headphones: 16 - 50 ohms (recommended:
	32 ohms)
	CD digital output (optical)
Input terminals	Video/Auxiliary (audio signal): 500 mV/47
	kohms

■ CD player

Type	Compact disc player
Signal readout	Non-contact, 3-beam semiconductor laser
	pickup
D/A converter	1-bit D/A converter
Frequency re-	20 - 20,000 Hz
sponse
Dynamic range	90 dB (1 kHz)

■ Tuner

Frequency range	FM: 88 -	108 MHz
	AM: 531	- 1,602 kHz

■ Speaker

Type	2-way type speaker system
	Tweeter
	10 cm (4") Woofer
Maximum input	20 W
power
Rated input power	10 W
Impedance	8 ohms
Dimensions	Width: 146 mm (5-3/4")
	Height: 267 mm (10-9/16")
	Depth: 186 mm (7-3/8")
Weight	1.5 kg (3.3 lbs.)/each

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

– 3 –

XL-1500W

1

NAMES OF PARTS

8

9

10

■ Front panel

111. CD Compartment

2.CD Open/Close Button

3.On/Stand-by Button

4.Function Selector Button

125. 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

2				5
3				6	■ Display
				7
4					1. Timer Play Indicator
					2. Sleep Indicator
					3. CD Random Play Indicator
					4. Memory Indicator
	2	3	4		5. FM Stereo Mode Indicator
1				5	6. CD Play Indicator
					7. CD Repeat Play Indicator
					8. FM Stereo Receiving Indicator
				8	9. Surround Indicator
6
				9
7
					■ Rear panel
1					1. CD Digital Output Socket
2				6	2. Headphone Socket
					3. AM Aerial Terminal
3
				7	4. Aerial Earth Terminal
					5. FM 75 Ohms Aerial Socket
4				8	6. Video/Auxiliary (Audio Signal) Input Sockets
5					7. Speaker Terminals
				9	8. AC Power Input Socket
					9. AC Voltage Selector
					■ Speaker system
			The rating label is located		1. Tweeter
					2. Woofer
			on the bottom of the unit.
					3. Bass Reflex Duct
					4. Speaker Terminals
					Speaker grilles are removable:
					Make sure nothing comes into contact with the
					speaker diaphragms when you remove the
					speaker grilles.
			1		Placing the speaker system:
					There is no distinction between the right and the left speakers.
			2		Left speaker	Right speaker
			3	4

– 4 –

	1	11
	2	12	17
	3	13		21
			18
	4	14
			19
	5	15		22
	6	16	20	23
	7
	8		24	25

9

10	26	27

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

XL-1500W

■Remote control

1.Remote Control Transmitter

2.On/Stand-by Button

3.CD Button

4.Tuner Button

5.Timer Button

6.Clock Button

7.Memory Button

8.Dimmer Button

9.Surround Button

10.Volume Up and Down Buttons

11.Video/Auxiliary Button

12.Band Selector Button

13.Clear Button

14.Sleep Button

15.Random/Repeat Button

16.CD Open/Close Button

17.Tuner Preset Up Button

18.CD Track Down Button

19.CD Fast Reverse, Tuning Down Button

20.CD Play Button

21.CD Track Up Button

22.CD Fast Forward, Tuning Up Button

23.CD Pause Button

24.CD Stop Button

25.Tuner Preset Down Button

26.Bass Up and Down Buttons

27.Treble Up and Down Buttons

– 5 –

XL-1500W

OPERATION MANUAL

Setting the clock

This may be operated only with the remote control.

In this example, the clock is set for the 24-hour (0:00) display.

1 Press the CLOCK button and within 3 seconds, press the MEMORY button.

2 Within 1 minute, press the PRESET ( or ) button to

select 24-hour or 12-hour display and then press the MEMORY button.

"0:00" The 24-hour display will appear.

(0:00 - 23:59)

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

(AM 12:00 - PM 11:59)

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

3 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".

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

●The hour will not advance even if minutes advance from "59" to "00".

●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 "0:00" or 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 24-hour or 12-hour display) will be skipped.

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

1Clear all the programmed contents.

2Perform "Setting the clock" from the beginning.

Remote control

■ Battery installation

1Remove the battery cover.

2Insert the supplied batteries according to the direction indi-

cated in the battery compartment.

When inserting or removing the batteries, push them towards the battery terminals.

3Replace the cover.

Precautions for battery use:

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

●Do not mix old and new batteries.

●Remove the batteries if the unit is not to be used for long periods of time. This will prevent potential damage due to battery leakage.

Caution:

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

●Installing the batteries incorrectly may cause the unit to malfunction.

Notes concerning use:

●Replace the batteries if the operating distance is reduced or if the operation becomes erratic. Purchase 2 "AAA" size batteries (UM- 4, R03, HP-16 or similar).

●Periodically clean the transmitter on the remote control and the sensor on the unit with a soft cloth.

●Exposing the sensor on the unit to strong light may interfere with operation. Change the lighting or the direction of the unit.

●Keep the remote control away from moisture, heat, shock, and vibrations.

■ 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 below:

Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the music.

Remote sensor

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

– 6 –

XL-1500W

System connections

■ Setting the AC voltage selector

Check the setting of the AC voltage selector located on the rear panel before plugging the unit into a wall socket. If necessary, adjust the selector to correspond to the AC power voltage used in your area.

Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).

■ Connecting the AC power lead

After checking all the connections have been made correctly, connect the AC power lead to the AC power input socket, then into the wall socket.

Wall socket

1

2

Notes:

●Unplug the AC power lead from the wall socket if the unit will not be in use for a prolonged period of time.

●Never use a power lead other than the one supplied. Use of a power lead other than the one supplied may cause an electric shock or fire.

AC Plug Adaptor

In areas (or countries) where a wall socket as shown in illustration is used, connect the unit using the AC plug adaptor supplied with the unit, as illustrated. The AC plug adaptor is not included in areas where the wall socket and AC power plug can be directly connected (see illustration ).

Note for users in Australia and New Zealand:

An AC plug adaptor is not supplied if the lead has an Australian Standard plug.

Troubleshooting

■ 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:

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

2If the unit is not restored in step 1, unplug and plug in the unit, and then turn the power on.

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

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

mode.

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

Whilst pressing down the MEMORY/SET button and the button, plug the AC power lead into the AC INPUT socket on the unit.

AC INPUT

Caution:

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

●After the above operation, interval span setting for AM will be returned to 9 kHz (50 kHz for FM) automatically.

– 7 –

XL-1500W

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.

	Top Cabinet	(B1) x1
		ø3 x10mm

(A1) x2 ø3 x10mm

(B1) x1 ø3 x10mm

(B1) x1	Cover,Rear Panel
ø3 x6mm	(C2) x4
	ø3 x10mm

								Figure 8-1
	STEP	REMOVAL		PROCEDURE		FIGURE
	1	Top Cabinet	1.	Screw ..................	(A1) x4	8-1,2	TOP Cabinet	Cover,
			2.	Socket .................	(A2) x9	8-2
	2	Cover,Rear panel	1. Screw		(B1) x3	8-1		Rear Panel
	3	Chassis	1.	Screw ..................	(C1) x5	8-3
			2.	Screw ..................	(C2) x4	8-1
			3.	Hook ....................	(C3) x4	8-3
	4	Tuner PWB	1.	Screw ..................	(D1) x1	9-1		(A2) x8
			2.	Socket .................	(D2) x1
	5	Terminal PWB	1. Screw ..................		(E1) x2	9-1
			2.	Socket .................	(E2) x1
	6	Rear Panel	1. Screw ..................		(F1) x1	9-1
	7	Main PWB	1. Screw ..................		(G1) x6	9-1
			2.	Screw ..................	(G2) x2		(A2) x1
			3.	Socket	(G3) x2
	8	CD PWB	1. Flat Cable ............		(H1) x1	9-2
			2.	Socket .................	(H2) x2
			3.	Screw ..................	(H3) x4
	9	CD Mechanism	1. Screw ..................		(J1) x4	9-2
	10	LED PWB	1. Screw ..................		(K1) x2	9-2	(A1) x2	Bottom Cabinet
	11	Switch PWB	1. Hook		(L1) x2	9-3
							ø3 x10mm
			2.	Socket .................	(L2) x1			Figure 8-2
	12	Display PWB	1. Screw		(M1) x6	9-3
			2.	Socket .................	(M2) x1
	13	Gear Box	1. Hook ....................		(N1) x3	9-3

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.

Chassis

Hook
(C3) x4	Chassis
2

1

Bottom

Cabinet

Bottom Cabinet

(C1) x5 ø3 x6mm

Figure 8-3

– 8 –

XL-1500W

			(E1) x2
			ø3 x10mm
	(G3) x2	(G2) x2	Terminal PWB
		ø3 x10mm

Rear Panel

(E2) x1

(G1) x6 ø3 x8mm

Main PWB

Switch

PWB

Hook (L1) x2

Switch

PWB

Switch

Pull Pull

Hook (L1) x2

Figure 9-1

Gear Box

(L2) x1

Figure 9-3

(F1) x1 ø3 x6mm

	(H1) x1	(H2) x1
(D1) x1		(H3) x4
		ø2.5 x10mm
ø3 x10mm
		(K1) x2
	CD PWB
		ø2.5 x10mm
Tuner PWB		Holder,
	(J1) x4	Indicator Panel,CD
(D2) x1	ø2.5 x10mm

Holder PWB	LED PWB

Chassis

CD

Mechanism

Display PWB

		(H2) x1	Top Cabinet
Gear Box
Pull	Pull		Figure 9-2
Hook
(N1) x3		(M1) x6
		ø2.5 x10mm
Hook
(N1) x3
		Display PWB
		(M2) x1

Top Cabinet

Tweeter

Front Panel ( A2 ) x1

( A3 ) x4 ø3.5 x12mm

						Net Frame
STEP	REMOVAL		PROCEDURE		FIGURE	( A1 ) x1
1	Speaker	1. Net Frame ...........		(A1) x1	9-4
		2.	Front Panel .........	(A2) x1
		3.	Screw ..................	(A3) x4

Woofer

Screwdriver

Figure 9-4

– 9 –

XL-1500W

REMOVING AND REINSTALLING THE MAIN PARTS

How to remove the CD lid (See Fig. 10-1.)

Perform steps 1 to 13 of the disassembly method to remove the gear box. (See page 8,9)

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.)

CD MECHANISM SECTION (See Fig. 10-2.)

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

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 protect the optical pickup from electrostatic damage.

Hook (A2) x3

Worm Wheel

(A1) x2 ø2 x3mm

CD Lid Motor

Figure 10-1

(A1) x4

Mechanism Cover

(A2) x2 ø2.6 x6mm

CD Mechanism

Shaft (A3) x1

Gear (A5) x1

Stop Washer (A4) x1

Pickup unit

Figure 10-2

– 10 –

XL-1500W

ADJUSTMENT

TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Frequency	Frequency	Display		Setting/	Instrument
				Adjusting	Connection
				Parts
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 ON/STAND-BY. 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.	FM		Preset No.	AM
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

• FM Mute Level

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

Frequency	Display	Adjusting	Instrument
		Parts	Connection
98.00 MHz	98.00 MHz	VR351*1	Input: SO301
(30 dBμV)			Output: Speaker
			Terminal

*1. Adjust so that an output signal appears.

• Check FM VT

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

Frequency	Display	Check Point	Instrument
			Connection
87.5 MHz	87.5 MHz	2.2 V ± 0.7 V	TP301
108 MHz	108 MHz	7.3 V ± 1.0 V	TP301

			FM			TUNER PWB-B1
SO301		75
		OHMS			GND AM
ANTENNA
TERMINAL

	FE301
	TP301	T302
	20	AM
	IC302	Tracking fL
	VR351	T306
	FM Mute
		AM Band
	Level
		Coverage fL
	T351
		IC303
	AM IF

Figure 11 ADJUSTMENT POINTS

– 11 –

XL-1500W

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 ON/STAND-BY button, while keeping pressing the following two buttons in the ordinary stand-by mode (power off ). In this case, the main unit buttons are valid. When turning the ON/STAND-BY 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 ON/STANDBY 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.

"ON/STAND-BY" ......	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 "ON/STAND-BY" 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 ON/STAND-BY button to end the test mode, or press the CD STOP button to return to step 1. Any other operations are inhibited.

– 12 –

XL-1500W

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.

"ON/STAND-BY" .....	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.

"ON/STAND-BY" .....	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.

"ON/STAND-BY" .....	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.

– 13 –

XL-1500W

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.

"ON/STAND-BY" ......	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.

"ON/STAND-BY" ......	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-1500W

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.

"ON/STAND-BY" ......	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-1500W

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 "ON/ STAND-BY" 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.

("FF" + "MEMORY/SET" KEY SPAN CHANGE)

(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 + ON/STAND-BY. ->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)

CH	BAND	FM		CH	BAND	AM
1		FM 87.50 MHz		6		AM 522 kHz
2		FM108.00 MHz		7		AM1620 kHz
3	FM	FM 98.00 MHz		8	AM	AM 990 kHz
4	STEREO	FM 90.00 MHz		9		AM 603 kHz
5		FM106.00 MHz		10		AM1404 kHz

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

CH	BAND	FM
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

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XL-1500W

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

(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

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