Sharp XL-40-H, XL-50-H Service manual

XL-40H/50H

SERVICE MANUAL

No. S2007XL40H///

XL-40H XL-50H

XL-40H/XL-50H Micro Component System consisting of XL-40H/XL50H ( main unit) and CP-XL40H/CP-XL50H (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.

Illustration: XL-40H

CONTENTS

SAFETY PRECAUTION FOR SERVICE MANUAL .......................................................................................................... 2

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

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

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

DISASSEMBLY................................................................................................................................................................. 6

REMOVING AND REINSTALLING THE MAIN PARTS.................................................................................................... 7

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

RDS ................................................................................................................................................................................ 10

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

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

TYPE OF TRANSISTOR AND LED ................................................................................................................................ 18

WAVEFORMS OF CD CIRCUIT..................................................................................................................................... 19

BLOCK DIAGRAM .......................................................................................................................................................... 20

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................ 24

TROUBLESHOOTING .................................................................................................................................................... 34

FUNCTION TABLE OF IC .............................................................................................................................................. 40

LCD SEGMENT .............................................................................................................................................................. 48

PARTS GUIDE/EXPLODED VIEW

Page

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-40H/50H

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

SAFETY PRECAUTION FOR SERVICE MANUAL

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

The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, 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.

VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ KÄYTTÖOHJEESSA MAI NI TULLA TAVALLA SAATTAA ALTI STAA KÄYTTÄJÄN TURVALLI SUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEIL YLLE.

VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA BRUKSANVI SNI NG SPECI FI CERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.

Laser Diode Properties

Material: GaAIAs W avelength: 780 nm Emission Duration: continuous Laser Output: max. 0.6 mW

LASER KLASSE 1 LUOKAN 1 LASERLAITE KLASS 1 LASERAPPARAT

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE. ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

XL-40H/50H

SPECIFICATIONS

● General Power source: Power consumption:

Dimensions: Width; 160 mm (6-5/16")

Weight: 2.7 kg (6.0 lbs.)

● Amplifier section Output power: PMPO; 28 W (total)

Output terminals: Speakers; 4 ohms

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

D/A converter: 1-bit D/A converter Filter: 8-times oversampling digital

Frequency response: Wow and flutter: Unmeasurable

AC 230 V, 50 Hz

26 W

Height; 241 mm (9-1/2") Depth; 249 mm (9-13/16")

MPO; 14 W (7 W + 7 W) (DIN 45 324) RMS; 10 W (5 W + 5 W) (DIN 45 324)

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

conductor laser pickup

filter

20 - 20,000 Hz (less than 0.001% W. peak)

● Tuner section Frequency range: FM; 87.5-108 MHz

AM; 522-1,620 kHz

● Cassette deck section Frequency re- 50 - 14,000 Hz (Normal tape)

sponse: Signal/noise ratio: 50 dB Wow and flutter: 0.3 % (DIN 45 511)

CP-XL40H/50H

● Speaker section 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; 191 mm (7-1/2")

Weight: 1.3 kg (2.9 lbs.)/each

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

– 2 –

16 17

18 19

20 21 22

23 24

29 30

31 32

33 34

36 37

25 26 27

2 3

NAMES OF PARTS

XL-40H/50H

■ Front panel

1. Timer Indicator

2. Record Indicator

3. Sleep Indicator

4. (CD) Random Indicator

5. (CD/TUNER) Memory Indicator

6. RDS Indicator

7. Traffic Programme Indicator

8. Traffic Announcement Indicator

9. FM Stereo Mode Indicator

10. (CD) Play Indicator

11. (CD) Repeat Indicator

12. EON Indicator

13. Programme Type Indicator

14. Traffic Information Indicator

15. FM Stereo Indicator

16. CD Compartment

17. EON Button

18. On/Stand-by Button

19. Programme Type/Traffic Information Search Button

20. (CD/TAPE) Stop Button (TUNER) Memory Clear Button

21. Record Pause Button

22. Bass/Treble Selector Button

23. Memory/Set Button

24. Clock/Timer/Sleep Button

25. Band Selector Button

26. (CD) Review Button (TAPE) Rewind Button (TUNER) Tuning Down Button

27. Function Selector Button

28. Headphone Socket

29. CD Eject Button

30. ASPM Button

31. Remote Control Sensor

32. Display Mode Selector Button

33. Volume Select Button

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

35. Jog Dial

36. (CD) Cue Button (TAPE) Fast Forward Button (TUNER) Tuning Up Button

37. Volume/Jog Dial Selector Button

38. Cassette Compartment

XL-40H/50H

■ Rear panel

1. AC Power Input Socket

2. FM 75 ohms Aerial Socket

3. AM Loop Aerial Input Socket

4. Speaker Terminals

– 3 –

XL-40H/50H

CP-XL40H/50H

■ Speaker section

1. Bass Reflex Duct

2. Full-Range Speaker

3. Speaker Wire

XL-40H/50H

■ Remote control

1. Remote Control Transmitter LED

● Tuner control section

2. Programme Type/Traffic Information Search Button

3. Preset Up/Down Buttons

● CD control section

4. Clear Button

5. Random/Repeat Button

6. Memory Button

7. Stop Button

8. Play/Pause Button

9. Track Down/Review Button

10. Track Up/Cue Button

2 4

5 6

3 7

8 9

10 13

● Tape control section

11. Record Pause Button

12. Rewind Button

13. Stop Button

14. Play Button

15. Fast Forward Button

● Common section

16. Sleep Button

17. Bass Up/Down Buttons

18. Function Selector Buttons

19. On/Stand-by Button

20. Timer Button

21. Clock Button

22. Treble Up/Down Buttons

23. Volume Up/Down Buttons

11 12

16 17

18 19

14 15

20 21

– 4 –

OPERATION MANUAL

PREPARATION FOR USE

■ Connecting the AC power lead

AC 230 V, 50Hz

To an AC socket

T o AC INPUT

Connect the AC power lead to the AC power input

socket, then connect the AC power lead plug to an

AC socket.

Notes:

● Unplug the AC power lead from the AC socket if

the unit is not to be used for a prolonged period

of time.

● Never use a power lead other than the one sup-

plied. Otherwise, a malfunction or an accident

may occur.

Notes concerning use:

● Replace the batteries if the operating distance is

reduced or if the operation becomes erratic.

● Periodically clean the transmitter LED on the re-

mote control and the sensor on the main unit

with a soft cloth.

● Exposing the sensor on the main unit to strong

light may interfere with operation. Change the

lighting or the direction of the unit.

● Keep the remote control away from moisture,

excessive heat, shock, and vibrations.

0.2m - 6m

(8” - 20”)

■ Remote control

RESETTING THE MICROCOMPUTER

2,3

AC INPUT

Reset the microcomputer under the following

conditions:

● T o 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.

Press the ON/STAND-BY button to enter the

stand-by mode.

Unplug the AC power lead from the AC INPUT

socket on this unit.

Whilst pressing down the MEMORY/SET but-

ton and the

button, plug the AC power lead

into the AC INPUT socket on this unit.

Caution:

● The operation explained above will erase all data

stored in memory, such as clock and timer set-

tings, and tuner and CD presets.

SETTING THE CLOCK

Press the CLOCK/TIMER/SLEEP button to en-

ter the time check mode.

Within 3 seconds, press the MEMORY/SET but-

ton.

Turn the jog dial to select the time display mode.

0:00 AM 12:00

“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 (see page 26).

Press the MEMORY/SET button.

Adjust the hour by turning the jog dial.

● When the jog dial is turned one click clockwise,

the time will increase by 1 hour. When it is turned

one click anti-clockwise, the time will decrease

by 1 hour.

Keep turning the jog dial to change the time con-

tinuously.

● When the 12-hour display is selected, “AM” will

change automatically to “PM”.

(Main unit operation)

In this example, the clock is set for the 24-hour

(0:00) system.

CLOCK/TIMER/

SLEEP

MEMORY/SET

Jog dial

Press the MEMORY/SET button.

Adjust the minutes by turning the jog dial.

● When the jog dial is turned one click clockwise,

the time will increase by 1 minute. When it is

turned one click anti-clockwise, the time will de-

crease by 1 minute.

Keep turning the jog dial to change the time con-

tinuously.

● The hour setting will not advance even if min-

utes advance from “59” to “00”.

Press the MEMORY/SET button.

● The clock starts operating from “0” second. (Sec-

onds 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.

If this happens, follow the procedure below to

change the clock time.

To change the clock time:

Perform steps 1, 2 and 4 - 8 above.

To change the time display mode:

Perform steps 1 - 3 in the section “RESETTING

THE MICROCOMPUTER”, on page 26.

Perform steps 1 - 8 above.

XL-40H/50H

– 5 –

XL-40H/50H

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 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.

XL-40H/50H

CD PWB

Display PWB

(A1)x1 ø3x10mm

Front Panel

Top Cabinet

(A1)x1 ø3x10mm

(B2)x1

Main PWB

(B1)x1 ø3x10mm

(C1)x1 ø3x10mm

XL-40H/50H

STEP REMOVAL

1 Side Panel

2 Top Cabinet 1. Screw .................. (B1) x1 6-1

Switch PWB 2. Socket ................. (B2) x2

3 Rear Panel 1. Screw .................. (C1) x2 6-1

4 Main PWB/ 1. Screw .................. (D1) x3 6-2

Headphones PWB 2. Screw .................. (D2) x2

5 Jog Switch PWB 1. Socket ................. (E1) x1 6-2

6 Display PWB/ 1. Screw .................. (F1) x2 6-2

LED PWB 2. Screw .................. (F2) x3

(With Jog Motor 3. Bracket................ (F3) x1

Flame) 4. Socket ................. (F4) x1

7 Front Panel 1. Screw .................. (G1) x1 6-2

8 Power PWB 1. Screw .................. (H1) x4 6-2

9 Tape Mechanism 1. Open the cassette holder 6-3

10 CD PWB/ 1. Screw .................. (K1) x3 6-4

Open Close Switch 2. Hook .................... (K2) x2

PWB (Note) 3. Socket ................. (K3) x3

11 CD Mechanism 1. Screw .................. (L1) x3 6-4

Open

(Left/Right)

Front Panel

PROCEDURE

1. Screw .................. (A1) x8 6-1

3. Bracket ................ (D3) x1

4. Socket ................. (D4) x3

5. Flat wire............... (D5) x1

6. Socket ................. (D6) x1

2. Screw .................. (E2) x2

3. Knob .................... (E3) x1

5. Hook .................... (F5) x2

6. Hook .................... (F6) x2

2. Socket ................. (G2) x1

3. Screw .................. (G3) x1

2. Screw .................. (H2) x1

3. Screw .................. (H3) x1

4. Bracket ................ (H4) x1

2. Screw .................. (J1) x4

Tape Mechanism

FIGURE

(K1)x3 ø2.5x14mm

(K3)x1

(K2)x2

(B2)x1 Side Panel

(Right)

(E1)x1

(E3)x1 Display PWB

Front Panel

Jog Switch

PWB

(E2)x2 ø2.5x12mm

Jog Motor

Tape

Holder Mechanism PWB

(F4)x1 (G3)x1

ø3x6mm

Power PWB

(H3)x1 ø3x6mm

Power PWB

Sub Power Transformer

(A1)x2 ø3x10mm

(F2)x2 ø2.5x10mm

(D4)x1

LED

(F6)x2

PWB

(D4)x1

CD PWB

(K3)x2

(G1)x1 ø3x8mm

(H4)x1

(C1)x1

RearPanel

ø3x10mm

Figure 6-1

(F5)x2

Sub Power Transformer

(D6)x1

(F3)x1

(D4)x1

(H2)x1 ø3x10mm

Main Power Transformer

(D2)x1 ø3x8mm

Headphones PWB

(D5)x1

(G2)x1

Figure 6-2

CD Mechanism

(A1)x4 ø3x10mm

Side Panel (Lift)

(D1)x2 ø3x10mm

Main PWB

(F2)x1 ø2.5x10mm

(D3)x1

(D1)x1 ø3x10mm

(F1)x2 ø2.5x14mm

(D2)x1

ø3x8mm (H1)x4 ø3x6mm

(L1)x3 ø2.5x10mm

PWB Washer x3

Note:

Cassette Holder

Figure 6-3

(J1)x4 ø2.5x10mm

Open/Close Switch PWB

CD Motor PWB

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

Top Cabinet

CD Mechanism

Figure 6-4

Figure 6-5

– 6 –

XL-40H/50H

CP-XL40H/50H

STEP REMOVAL

1 Speaker 1. Front panel.......... (A1) x1 7-1

PROCEDURE

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

FIGURE

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 7 and 9 of the disassembly method to remove the tape mechanism. (See page 6.)

How to remove the record / playback and erase heads (See Fig. 7-2.)

1. Remove the screws (A1) x 2 pcs., to remove the erase head.

2. Remove the screws (A2) x 2 pcs., to remove the record/ playback head.

Note:

After replacing the heads and performing the azimuth adjustment, be sure to apply screwlock.

(A1x1)

(A2)x1 ø2x7mm

(A1)x2 ø2x8mm

Erase Head

Record/ Playback Head

Speaker Box

Woofer

(A2)x4 ø4x12mm

Driver

Direction of handle

Figure 7-1

(A2)x1 ø2x3mm

Figure 7-2

Driver should be pried away from speaker Box.

How to remove the pinch roller (See Fig. 7-3.)

1. Carefully bend the pinch roller pawl in the direction of the

arrow <A>, and remove the pinch roller (B1) x 1 pc., upwards.

How to remove the belts (See Fig. 7-4.)

1. Remove the main belt (C1) x 1 pc., from the motor pulley.

2. Remove the FF/REW belt (C2) x 1 pc., from the REW/FF

roller.

3. Put on the belts in the reverse order of removal.

Note:

When putting on the belt, ascertain that the belt is not twisted, and clean it.

How to remove the motor (See Figs. 7-5.)

1. Remove the mainbelt.

2. Remove the screws (D1) x 2 pcs., to remove the motor

bracket.

3. Remove the screws (D2) x 3 pcs., to remove the motor.

Note:

When mounting the motor, pay attention to the motor mounting angle

– 7 –

Pinch Roller (B1)x1

Main Belt (C1)x1

(D1)x1 ø2x4mm

Motor

(D1)x1 ø2x4mm

Figure 7-3

FF/REW Belt (C2)x1

Figure 7-4

(D2)x3 Special Screw

Motor Bracket

Motor

Figure 7-5

<A>

Pinch Roller Pawl

Motor

REW/FF Clutch

XL-40H/50H

How to remove the flywheel (See Fig. 8-1.)

1. Remove the belt.

2. Remove the stop washer (E1) x 1 pc., with a small precision screwdriver to extract the flywheel from the capstan metal.

Note:

When the stop washer is deformed or damaged, replace it with a new one.

How to reinstall the parts

Install each part in the reverse order of the removal with care.

How to remove the tape mechanism PWB (See Fig. 8-2.)

1. Remove the screws (F1) x 1 pc., to remove the tape

mechanism PWB.

2. Remove the screws (F2) x 1 pc.

3. Remove the solder joints (F3) x 2 pcs., to remove the tape

mechanism PWB.

Mechanism Chassis

Washerx2

Flywheel

(F1)x1 ø2x3mm

Tape Mechanism PWB

(E1)x1 Stop Washer

Stop Washer

Figure 8-1

Driver

(F2)x1 ø2x8mm

Tape Mechanism PWB

(F3)x2 Solder Joint

How to remove the jog motor (See Figs. 8-3.)

1. Remove the side panel and top cabinet.

2. Remove the jog belt (G1) x 1 pc., from the motor pulley.

3. Remove the screws (G2) x 2 pcs., to remove the jog motor.

Note:

When putting on the belt, ascertain that the belt is not twisted, and clean it.

CD MECHANISM SECTION

Perform steps 1, 2 and 10, 11 of the disassembly method to remove the CD mechanism.

How to remove the pickup (See Fig. 8-4)

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.

– 8 –

(G2)x2 ø2x5mm

Worm Gear

(A1) x2

Pickup Unit

Figure 8-2

Jog Motor

Jog Belt (G1)x1

Figure 8-3

Mechanism Cover

Figure 8-4

Display PWB

Jog Motor Holder

(A1) x2

(A2) x2 ø2.6 x6mm

CD Mechanism

Shaft (A3) x1

StopWasher (A4) x1

Gear (A5) x1

MECHANISM SECTION

• Driving Force Check

Torque Meter

Play: TW-2412 Over 80 g

Specified Value

• Torque Check

Torque Meter

Play: TW-2111 30 to 60 g. cm Fast forward: TW-2231 55 to 140 g.cm Rewind: TW-2231 55 to 140 g.cm

Specified Value

• Tape Speed

Test Tape

MTT-111 Variable 3,000 ± Headphone

Adjusting

Point

resistor in 90 Hz terminal motor.(M901)

Specified

Value

Instrument

Connection

TAPE MECHANISM

M901 Tape Motor

Variable resistor

Figure 9-1 ADJUSTMENT POINT

ADJUSTMENT

TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Frequency Frequency

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 JOG DIAL knob 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

• 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

Adjust so that an output signal appears.

Display

Adjusting

Setting/

Adjusting

Preset No.

Parts

XL-40H/50H

Instrument

Connection

Parts

Instrument Connection

Terminal

MAIN PWB

T351

VR351

FM Mute

AM IF

Level

TP301

R336

T306

AM Band Coverage fL

T302

AM Tracking fL

Figure 9-2 ADJUSTMENT POINTS

FE301

• 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

SO301 FM ANTENNA SOCKET

CNP301 AM ANTENNA SOCKET

Connection

– 9 –

XL-40H/50H

5 6

Vdda

Vssa

MPXIN

TEST

CLK(4.332MHz)

OSC

XIN

XOUT

RDS-ID/

READY

RST

MODE

RDCL

RDDA

Vssd

Vddd

PLL

(57kHz)

CLOCK

RECOVERY

(1187.5Hz)

DATA

DECODER

RAM

(128-bits)

RDS-ID

DETECT

REFERENCE

VOLTAGE

ANTIALISING

FILTER

57kHz

BPF

(SCF)

SMOOTHING

FILTER

VREF

FLOUT

CIN

RDS

IC521 VHiLC72723M-1: RDS Circuit (LC72723M)

Port

No.

Name

1 VREF Reference voltage output (Vdda/2). 2 MPXIN Baseband (multiplexed) signal input. 3 Vdda Analog power supply (+5V). 4 Vssa Analog ground. 5 FLOUT Subcarrier output (filter output). 6 CIN Subcarrier input (comparator input). 7 TEST Test input. 8 XOUT Crystal oscillator output (4.332MHz). 9 XIN Crystal oscillator input (external reference signal input). 10 Vssd Digital ground. 11* Vddd Digital power supply (+5V). 12 MODE Read mode setting (0 : master, 1: slave). 13 RST RDS-ID/RAM reset (positive polarity). 14 RDDA RDS data output. 15* RDCL RDS clock output (master mode)/ RDS clock input (slave mode). 16* RDS-ID/ RDS-ID/READY output (negative polarity).

READY

Function

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

RDS (Radio Data System) OPERATION

RDS is a broadcasting service which a growing number of FM stations are now providing. It allows these FM stations to send additional signals along with their regular programme signals. For example, the stations send their station names, and information about what type of programme they broadcast, such as sports or music, etc. When tuned to an FM station providing the RDS service, RDS will appear, the station frequency (and then the station name if sent) will be displayed. The TP (Traffic Programme) will appear on the display when the received broadcast carries traffic announcements, and the TA (Traffic Announcement) will appear whilst a traffic announcement is being received. EON will appear whilst the EON (Enhanced Other Networks information) data is being broadcast.

Note:

When the TP and TA appear at the same time, an announcement is being made. When only the TA appears, an announcement is not being made.

■ Information Provided by RDS

With the XL-40H/XL-50H, you can display two types of RDS service. T o show them in the display , press the DISPLAY MODE button. Each time you press the DISPLAY MODE button, the display will change to show the following information.

PS (Programme Service):

PTY (Programme Type):

Station Frequency:

Station names commonly known will be displayed. "NO PS" appears if no signal is being received.

Programme type will be displayed. "NO PTY" appears if no signal is being received.

Station frequencies.

DISPLAY MODE

Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and TA (Traffic Announcement) With the XL-40H/XL-50H, you can search for and receive the following PTY, TP and TA signals.

NEWS: Short accounts of facts, events and

AFFAIRS: Topical programme expanding or en-

INFO: Programmes whose purpose is to im-

SPORT: Programme concerned with any as-

EDUCATE: Programme intended primarily to

DRAMA: All radio plays and serials. CULTURE: Programmes concerned with any as-

SCIENCE: Programmes about the natural sci-

VARIED: Used for mainly speech-based pro-

POP M: Commercial music, which would gen-

ROCK M: Contemporary modern music, usually

EASY M: Current contemporary music consid-

publicly expressed views, reportage and actuality.

larging upon the news, generally in different presentation style or concept, including debate, or analysis.

part advice in the widest sense.

pect of sport.

educate, of which the formal element is fundamental.

pect of national or regional culture, including language, theatre, etc.

ences and technology.

grammes usually of light-entertainment nature, not covered by other categories. Examples include: quizzes, panel games, personality interviews.

erally be considered to be of current popular appeal, often featuring in current or recent record sales charts.

written and performed by young musicians.

ered to be “easy-listening”, as opposed to Pop, Rock or Classical, or one of the specialised music styles, Jazz, Folk or Country. Music in this category is often but not always, vocal, and usually of short duration.

– 10 –

(Continued)

LIGHT M: Classical Musical for general, rather

CLASSICS: Performances of major orchestral

OTHER M: Musical styles not fitting into any of

WEATHER: Weather reports and forecasts and

FINANCE: Stock Market reports, commerce,

CHILDREN: For programmes targeted at a young

SOCIAL: Programmes about people and things

RELIGION: Any aspect of beliefs and faiths, in-

PHONE IN: Involving members of the public ex-

TRAVEL: Features and programmes con-

LEISURE: Programmes concerned with recrea-

JAZZ: Polyphonic, syncopated music char-

COUNTRY: Songs which originate from, or con-

than specialist appreciation. Examples of music in this category are instrumental music, and vocal or choral works.

works, symphonies, chamber music, etc., and including Grand Opera.

the other categories. Particularly used for specialist music of which Rhythm & Blues and Reggae are examples.

meteorological information.

trading, etc.

audience, primarily for entertainment and interest, rather than where the objective is to educate.

that influence them individually or in groups. Includes: sociology, history, geography, psychology and society.

volving a God or Gods, the nature of existence and ethics.

pressing their views either by phone or at a public forum.

cerned with travel to near and far destinations, package tours and travel ideas and opportunities. Not for use for announcements about problems, delays, or road-works affecting immediate travel where TP/TA should be used.

tional activities in which the listener might participate. Examples include, Gardening, Fishing, Antique collecting, Cooking, Food & Wine, etc.

acterised by improvisation.

tinue the musical tradition of the American Southern States. Characterised by a straightforward melody and narrative story line.

NATION M: Current Popular Music of the Nation

OLDIES: Music from the so-called “golden age”

FOLK M: Music which has its roots in the mu-

DOCUMENT :

TEST: Broadcast when testing emergency

ALARM: Emergency announcement made un-

NONE: No programme type (receive only). TP: Broadcasts which carry traffic an-

TA: Traffic announcements are being

Note:

● When the unit is in the EON stand-by mode and

or Region in that country’s language, as opposed to international ‘Pop’ which is usually US or UK inspired and in English.

of popular music.

sical culture of a particular nation, usually played on acoustic instruments. The narrative or story may be based on historical events or the people.

Programme concerned with factual matters, presented in an investigative style.

broadcast equipment or receivers.

der exceptional circumstances to give warning of events causing danger of a general nature.

nouncements.

broadcast at present.

a programme is selected, the unit will display “TI” instead of “TP” or “TA”.

XL-40H/50H

TEST MODE

The test mode applied to this microcomputer has three modes, namely ordinary test mode to be used for adjustment or measurement, aging test mode to be used for aging test, and self-diagnosis test mode for self-inspection in case of final product inspection. The test mode specification prescribes the microcomputer with RDS (RH-IX0026SJZZ) . There are two types of indication examples; large ones for the microcomputer with RDS, and smaller ones for the microcomputer without RDS.

1. Turning on the test mode

To turn on the specific test mode, press the POWER button, holding down the following two buttons in the ordinary stand-by mode (power off state). In this case only the main unit button is valid. Even when the POWER of remote control button is set to on, the test mode is not turned on.

[Ordinary test mode]

1. CD Test Mode (TEST 1)…………………… Volume/JOG Dial Selector + FF/FWD

2. Tuner Test Mode (TEST 2)………………… Volume/JOG Dial Selector + Volume Select

3. Electronic volume Test Mode (TEST 3)……REW/REV + FF/FWD

4. Timer Test Mode (TEST 4)………………… FUNCTION + Volume Select

5. LCD Test Mode (TEST 5)……………………FUNCTION + FF/FWD [Self-diagnosis Test Mode]

1. Button input diagnosis test mode (TEST6).…

REW/REV + Volume Select

2. CD Test Mode (TEST 1)

In the CD test mode the operation of each step is enabled even when the LID-SW is off. However, if focus cannot be set in step 3 or any error processing is started, it is impossible to proceed to the next step. When the error processing is started, operations other than termination of test mode by pressing the POWER button or return to the step 1 by pressing the STOP button are inhibited.

1. Step 1 Mode When the CD test mode is turned on, the following indication lights, the processing (until turning-off of CD STB terminal of CD initialization operation flow) is executed, and the next button input is waited.

After lighting for one second

If the following operation buttons are pressed in this state, the operation is performed as follows.

"POWER".................The test mode is turned off, the power is turned off, and the ordinary standby mode is set.

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

button is held down.

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

button is pressed. However, if PU-IN is on, input is invalid.

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

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

"REC PAUSE"..........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 PU-IN SW ON cannot be detected within 10 seconds, the slide motor is stopped, and the following error indication appears. Press the POWER button to end the test mode, or press the STOP button to return to step 1. Any other operations are inhibited.

– 11 –

XL-40H/50H

2. Step 2 Mode When the "PLAY" button is pressed in this mode, the laser lighting command LDON (8400) is sent, and the laser is turned on. Other operations are not performed.

If the following buttons are pressed in this state, the operation is performed as follows.

"POWER" ................The test mode is turned off, the power is turned off, and the ordinary standby mode is set.

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

"REW/REV" .............The pickup slides toward the inner periphery while this button is held down. However, if PU-IN is on, input

is invalid.

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

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

"REC PAUSE" .........Shift to step 5

3. Step 3 Mode The laser is kept lighting. The processing (until turning-on of CLV servo of CD initialization operation flow) is executed, and the next button input is waited. (The focus servo is turned on, and focus search is performed.) The focus search is repeated until the focus is set.

When the following operation buttons are pressed in this state, the operation is executed as follows.

"POWER" ................ The test mode is turned off, the power is turned off, and the ordinary standby mode is set.

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

"REW/REV" .............The pickup slides toward the inner periphery while this button is held down. However, if PU-IN is on, input

is invalid.

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

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

"REC PAUSE" .........Shift to step 5

*If the focus is disturbed after it has been set, the process returns to step 1.

4. Step 4 Mode

The CLV servo ON command (8600) sending operation is performed, and the next button input is waited. (The disc is rotated to perform CLV locking.)

The time display indicates always "0:00".

When the following buttons are pressed in this state, the operation is executed as follows.

"POWER" ................ The test mode is turned off, the power is turned off, and the ordinary standby mode is set.

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

"REW/REV" .............The pickup slides toward the inner periphery while this button is held down. However, if PU-IN is on, input

is invalid.

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

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

"REC PAUSE" .........Shift to step 5

*If the focus is disturbed, the process returns to step 1.

– 12 –

XL-40H/50H

5. Step 5 Mode The CD initialization operation flow is executed to the end, the mute is set to off, and playback is started. Even when the playback reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback past time as in case of ordinary CD playback.

When the following operation buttons are pressed in this sate, the operation is executed as follows.

"POWER"................. The test mode is turned off, the power is turned off, and the ordinary standby mode is set.

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

"REW/REV"..............The pickup slides toward the inner periphery while this button is held down. However, if PU-IN is on, input

is invalid.

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

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

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

"BAND" ....................Shift to step 7

*If the focus is disturbed, the process returns to step 1. Other cautions

• TOC IL is not executed in the test mode.

• As for button operations other than those shown above, only the sound volume operation (with JOG) is accepted.

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 without

frequency setting by adjusting personnel when the tuner section is adjusted in the production line.

2. Details of tuner test mode When the power is turned on by using the "POWER" button while the "Volume/JOG Dial Selector" and "Volume Select"

buttons are held down in POWER OFF state, the frequency for adjustment and measurement of destination specified by the AREA terminal is preset and stored in the preset memory CH. However, Ordinary 1 and Ordinary 2 are set to the designation (destination selected by SPAN switching operation) set when the test mode is set. (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. However, FUNCTION switching

is invalid. Since it is necessary to discard the content of preset memory when the tuner test mode is ended, "0000" or "1111" bits are

written in the memory to be checked in case of memory check (in case of initial setting) so that memory abnormality is detected

in case of initial setting so as to ensure memory initialization.

When the tuner test mode is turned on, the following indication lights for one second.

• The TUNER TEST2 mode is set as a result of Volume Select + POWER. -> IF AC is set to OFF in the TEST2 mode, the initial

state is restored.

When POWER is set to OFF, the memory of TEST2 mode is protected. When the power is turned on again, the ordinary operation is enabled 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, holding down MEMORY + PLAY.

– 13 –

XL-40H/50H

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 hatched sections of the table are not stored in memory.

4. ASPM TEST Mode

BAND

When the ASPM button is pressed, the test mode is set. It starts up at FM 106.50 MHz. (ST mode) Data of 27 CH of 04 to 30 CH are all stored at FM 87.50 MHz (ST).

01 to 03CH are kept empty (If data of 3 CH are stored, max. 30 CH is filled.) When the ASPM button is operated in the TEST mode 3, the preset data is cleared (overwrite).

A) Operation with ASPM button Press the "ASPM" button or hold it down. (Any button other than ASPM button cancels the ASPM test mode.)

Europe 2, 4

BAND

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

11-15 LW

Europe 2, 4CH

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

Europe 2, 4

FM 105.00 MHz (ST) is indicated, and scan is started. (Start from 105.00 MHz)

During scanning the frequency is indicated.

End at FM 108.00 MHz (ST)

Only the number of preset and stored stations (number of CHs: max. 3 stations) is indicated for one second in the ASPM test mode. When two stations are stored, "_2 MEMORY" is indicated (lighted)for one second. ("02 MEMORY" indication is not given.)

"END" is not indicated

Not in zero-memory state

01CH indication (for one second)

Frequency indication (for one second)

(An example) FM P-01

FM 105.50MHz(ST)

When the ASPM button is pressed once in the TUNER TEST mode, the indication FM 106.50 MHz (ST) appears, and data of 04 to 30 CH are stored at 87.50 MHz (ST). When the ASPM button is operated again, the ASPM test operation mode is set.

In case of "_0 MEMORY" the process ends, and the FM 106.50 MHz (ST) state is resumed.

02CH indication (for one second)

Frequency indication (for one second)

03CH indication (for one second)

Frequency indication (for one second)

After indication of continuous time series for one second the indication of FM 106.50 MHz (ST) is restored. (The preset button is not pressed. The time series is indicated automatically, and the content of memory is indicated.) * PS name is not indicated (while the content of memory is checked) * If only 1 CH data is stored, FM P-01 -> FM 106.00 MHz -> FM 106.50 MHz (ST) (An example) (1 sec) (1 sec) (ST) End indication

FM P-02

FM 106.50MHz(ST)

FM P-03

FM 107.50MHz(ST)

– 14 –

Confirmation of content of memory (Examples of concrete indication)

XL-40H/50H

* When the "PRESET UP" button or "PRESET DOWN" button is pressed after completion, the following indication appears.

CH indication (for 2 seconds)

* If signal exists at 106.50 MHz, the following indication appears.

FM 106.50 MHz

In case of memory storage with ASPM, for example, if RDS station 107.50 MHz has the PI code (the same as that of RDS station 105.50 MHz) and VSM is greater than 105.50 MHz (PR-01), data is overwritten on 105.5 MHz which is contained in "PR-01". (Frequency is changed to 107.50 MHz.) If VSM is equal, previously stored 105.50 MHz remains.

When RDS station is stored in the test mode, the 2-second blinking of preset No. is not performed so as to save the production line test time. ("RDS" lighting is performed.)

Note: RDS operation is performed in FM MONO state. However, in case of ASPM, ASPM scan is performed after BAND is

changed from FM MONO to FM STEREO.

Frequency indication (for 2 seconds)

NO PS

(Blinking for 5 seconds: 1 Hz)

PS name

NO PS

(Blinking for 5 seconds: 1 Hz)

Time series indication of PS name indication is enabled. (The same as in case of Ordinary)

Note: If PS is fixed after the frequency indication is

resumed, the PS name indication is restored.

When the PS data is given in case of NO PS indication, the PS name indication is restored.

Note: If PS is fixed after the frequency indication is

resumed, the PS name indication is restored.

Note: When the (PLAY) button is pressed in TEST 2 mode, it is possible to check the sate of IF count. However, this

function is for designer. It is not necessary for other sections.

B) Cautions concerning the ASPM test mode a) Cancel: When the "ASPM" button is pressed again during operation after it was first pressed in the test mode, the ASPM

test mode is canceled (interrupted), and the initial state FM 106.50 MHz (ST) indication is restored.

(To check the data which was preset and stored until interruption, use the preset UP/DOWN button. (JOG UP/DOWN is

also available after JOG mode button operation.)

wing indication appears. b) The ASPM test mode is started in FM stereo state (FM 106.50 MHz ST). If any button other than ASPM button is pressed

even only once after it is started, it becomes invalid, and the ASPM test mode becomes inoperable.

Invalid: The Ordinary mode is set while 4 to 30CH data remain in memory (or 1 to 30 CH MAX data remain in memory). The "ASPM" button can be repeatedly operated until 01CH to 03CH is filled (up to 3 stations in memory).

The number of stored stations -> Channel No. -> Frequency -> FM 106.50 MHz (ST) is indicated. (1 second) (1 second) (1 second) (Initial state)

Up to 3 stations (1 to 3CH) can be indicated. This indication is given only in the ASPM test mode. In other mode (not in ASPM

test mode) the number of stored stations -> END is indicated c) Broadcast (without PI code) which is not RDS is not preset and stored in memory. When the ASPM mode is set, the "MEMORY/SET" button cannot be operated (the test mode is canceled). Operation is possible after ASPM test mode operation.

d) Scan frequency: 105.00 MHz -> 108.00 MHz Data are stored in memory so that the PI code is not duplicated (by seeing the PI code and VSM (S meter value). When

the PI code is duplicated, both VSM (S meter value) are compared. The greater one is stored in memory but the smaller one is discarded.

For the stations having the same PI code, only one station having the highest electric field intensity is stored, and the

memory is refilled. The channels which can be preset in the ASPM test mode are 01 to 03CH. If 3 stations are stored, 30 CH are filled.

For the stations having the same electric field intensity, the former (preceding station) is stored. e) Signal of already stored same frequency is not stored. (The previously stored data is kept.) f) The order of preset memory is 01CH -> 02CH -> 03CH.

– 15 –

XL-40H/50H

g) When 01 to 03CH were all used, scan is aborted at the frequency at which filling occurred, and the following indication

appears.

Number of stored stations -> Indication of stored channel -> Indication of frequency -> Return to initial FM 106.50 MHz (ST) (1 second) (1 second) (1 second)

In this period up to 3 stations are continuously indicated (1 to 3 CH).

h) If even one station could not be preset and stored in the APMS mode, "_0MEMORY" is indicated after scanning, and then

FM 106.50 MHz (ST) indication is restored. (The first digit is space.)

("_0MEMORY" is indicated in the test mode.) i) When the "ASPM" button is pressed after three stations are stored (after full-memory of 30 stations), "ASPM" blinks for 2

seconds, and then FM 106.50 MHz (ST) indication is restored without ASPM scanning. (RDS automatic lighting)

(In case of ASPM button operation in full memory state) j) After completion of specific operation FM 106.50 MHz (ST) indication is restored. k) Test mode

Use of only the function button is inhibited. l) The first channel to be called (when data is stored in the ASPM mode) is 01CH. m) After start-up in the ASPM test mode the ASPM key is valid even when it is pressed many times. The test mode is kept.

If three stations are stored (1 to 3CH), full-memory state occurs. If the ASPM button is pressed after occurrence of full-memory state, the same operation as that described in item i) is

performed.

4. Electronic volume Test Mode (TEST 3)

When the test mode is set, the following indication lights for one second.

When this mode is set, BASS/TREBLE is set to 0 (0 dB) and SURROUND mode is set to off, and start-up function is set to CD when volume is -14 dB (STEP 17). The button operations in the test mode are the same as those of ordinary operation excepting sound volume UP/DOWN.

(1) The indication is the same as that of ordinary operation excepting test mode setting. (2) The sound volume control with the sound volume UP/DOWN button is only the following 3 steps unlike the ordinary state.

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

(3) BASS/TREBLE and SURROUND are switched when button operation is performed.

5. Timer test Mode (TEST 4)

When the test mode is set, the following indication lights for one second.

The current time and timer time are set in the following procedure to perform the timer playback.

1.Set the current time to 1:00, set the timer to ON time 1:02, set the function to Tape, and set volume STEP 8. One minute is counted as one second, and the timer playback operation is performed. The fade-in (when playback is started) is executed at a rate of one step for 0.5 sec. After completion of fade-in the fade-out is executed at a rate of one step for 0.5 sec (WAIT 1 sec inserted). After completion of fade-out the power is turned off (after WAIT 1 sec), and the mode is changed to the standby mode.

The indication during operation is the same as that of ordinary timer operation.

– 16 –

XL-40H/50H

6. LCD Test Mode (TEST 5)

When the LCD test mode is set, all the LCD segments are lighted. After that the indication is changed as follows according to the "PLAY" button input.

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

7. Key input diagnosis Test Mode (TEST 6)

When the test mode is set, the following indication appears.

This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode checking as to whether the "POWER" button was pressed after all the buttons shown below were pressed is performed. If the result is OK, OK is indicated. Even any one of keys was not pressed, an error is indicated. In case of OK termination or error termination exit from this mode occurs when the "POWER" button is pressed next time, and the standby mode is set.

1. In case of XL-40H/50H The following 15 buttons are detected as all buttons. PLAY, JOG MODE, BAND, BASS/TREBLE, FUNCTION, MEMORY/SET, REC PAUSE, REW, FF, STOP, CLOCK/TIMER/ SLEEP,PTY-TI, EON, APMS, DISPLAY

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

– 17 –

XL-40H/50H

NOTES ON SCHEMA TIC DIAGRAM

• Resistor: To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type.

• Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used. (CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type (P.P.): Polypropylene type

• Schematic diagram and Wiring Side of P.W.Board for this model are subject to change for improvement without prior notice.

REF. NO

NSW801 PICKUP IN ON—OFF SW700 JOG ON—OFF SW709 ON/STAND-BY ON—OFF SW710 CLOCK/TIMER/SLEEP ON—OFF SW711 TUNING UP ON—OFF SW712 PLAY/CD PAUSE ON—OFF SW713 VOLUME SELECT ON—OFF SW714 DISPLAY MODE ON—OFF SW715 ASPM ON—OFF SW716 EON ON—OFF SW717 PTY. TI ON—OFF

DESCRIPTION

POSITION POSITIONREF. NO

• The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given.

1. In the tuner section,

( ) indicates AM < > indicates FM stereo

2. In the main section, a tape is being played back.

3. In the deck section, a tape is being played back.

( ) indicates the record state.

4. In the power section, a tape is being played back.

5. In the CD section, the CD is stopped.

• Parts marked with “ ” ( ) are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

DESCRIPTION

SW721 MEMORY/SET ON—OFF SW722 BASS/TREBLE ON—OFF SW723 BAND ON—OFF SW724 REC. PAUSE ON—OFF SW725 STOP/CLEAR ON—OFF SW726 TUNING DOWN ON—OFF SW727 FUNCTION ON—OFF SW728 VOLUME JOG ON—OFF SW801 OPEN/CLOSE ON—OFF SW901 FOOL PROOF ON—OFF SW902 CAM ON—OFF

FRONT

VIEW

ECB

(1) (2) (3)

2SB562 C 2SC2001 K 2SC380 O 2SD468 C KRA102 M KRC102 M KRC104 M KRC107 M KTA1266 GR KTC3199 GR

FRONT

VIEW

BCE

2SD2012 Y

Figure 18 TYPES OF TRANSISTOR AND LED

– 18 –

MPG3372X HY2043

FRONT VIEW

1 2 3

SVC348S

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