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 –
1
23
4
5
6
7
8
9
11
12
13
14
15
10
16
17
18
19
20
21
22
23
24
29
30
31
32
33
34
35
36
37
38
25
26
27
28
1
2
3
4
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
1
2
2
4
5
6
3
1
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
22
23
– 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.
15
15
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
1
3
3
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.
1
Press the ON/STAND-BY button to enter the
stand-by mode.
2
Unplug the AC power lead from the AC INPUT
socket on this unit.
3
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
1
Press the CLOCK/TIMER/SLEEP button to en-
ter the time check mode.
2
Within 3 seconds, press the MEMORY/SET but-
ton.
3
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).
4
Press the MEMORY/SET button.
5
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
6
Press the MEMORY/SET button.
7
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”.
8
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:
1
Perform steps 1 - 3 in the section “RESETTING
THE MICROCOMPUTER”, on page 26.
2
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
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.
FM
Display
Display
Adjusting
Setting/
Adjusting
Preset No.
Parts
XL-40H/50H
Instrument
Connection
Parts
AM
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
3
4
2
7
1
5 6
11
10
14
15
12
13
16
9
8
Vdda
Vssa
MPXIN
TEST
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
VREF
FLOUT
CIN
RDS
IC521 VHiLC72723M-1: RDS Circuit (LC72723M)
Pin
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)
CH
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
CH
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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