Sharp XL-MP40H User manual

SERVICE MANUAL
XL-MP40H
No. S2518XLMP40H/
MICRO COMPONENT SYSTEM
XL-MP40H
MODEL
SHARP CORPORATION
CONTENTS
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] SAFETY PRECAUTION FOR SERVICE
MANUAL........................................................1-1
[2] IMPORTANTSERVICENOTES(FORU.K.
ONLY) ............................................................1-1
[3] SPECIFICATIONS ......................................... 1-2
[4] NAMES OF PARTS........................................1-3
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT............................................... 2-1
[2] TEST MODE..................................................2-2
[3] When the CD does not function.....................2-3
CHAPTER 3. MECHANICAL DESCRIPTION
[1] REMOVING AND REINSTALLING THE
MAIN PARTS .................................................3-1
[2] DISASSEMBLY..............................................3-3
CHAPTER 4. DIAGRAMS
[1] BLOCK DIAGRAM.........................................4-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] WAVEFORMS OF CD CIRCUIT....................5-1
[2] VOLTAGE......................................................5-2
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] NOTES ON SCHEMATIC DIAGRAM............6-1
[2] TYPES OF TRANSISTOR AND LED............6-1
[3] WIRING SIDE OF PWB/SCHEMATIC DIA-
GRAM............................................................6-2
CHAPTER 7. OTHERS
[1] FUNCTION TABLE OF IC .............................7-1
[2] LCD DISPLAY ...............................................7-6
Parts Guide
•
In the interests of user-safety the set should be restored to its origi- nal condition and only parts identical to those specified be used.
XL-MP40H Micro Component System consisting of XL-
MP40H (main unit) and CP-MP40H (speaker system).
•
Note for users in U.K. Recordingandplaybackofanymaterialmayrequireconsentwhich
SHARP is unable to give. Please refer particularly to the provisions
of Copyright Act 1956, the Dramatic and Musical Performers Pro-
tection Act 1956, the Performers Protection Acts 1963 and 1972
and to any subsequent statutory enactments and orders.
(Except for U.K.)

XL-MP40H
i
AudioXL-MP40HService ManualXLMP40HMarketE
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
"MAIN,DISPLAY,LED,POWER,SWITCH,JACK PWB," of this model employs lead-free solder. The LF symbol indicates
lead-free solder, and is attached on the PWB and service manuals. The alphabetical character following LF shows the
type of lead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Ref No. DescriptionParts No.
PWB-A2
PWB-A3
PWB-A4
PWB-A5
DISPLAYDCEKKV512SJ03
PWB-A1 MAINDCEKKV512SJ03
DCEKKV512SJ03
DCEKKV512SJ03
DCEKKV512SJ03 JACK
PWB-A6 DCEKKV512SJ03 SWITCH
POWER
LED
2. Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder
may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use a
dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station
or service branch in your area.
3. Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C,
and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of
time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded,
remove the bit from the PWB as soon as you confirm the steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn on and off the
power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use
of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.

XL-MP40H
1 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
CHAPTER 1. GENERAL DESCRIPTION
[1] 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 1 Requirements. However, the follow-
ing 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 posi-
tion, 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.
[2] IMPORTANT SERVICE NOTES (FOR U.K.
ONLY)
Before returning the unit to the customer after completion of a repair or
adjustment it is necessary for the following withstand voltage test to be
applied to ensure the unit is safe for the customer to use.
Setting of Withstanding Voltage Tester and set.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITT Ä V Ä LLE N Ä KYM Ä TTÖM Ä LLE LASERS Ä TEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN
I DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASER-
STRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR
LASERKLASS 1.
ADVARSEL-USYNLIG LASERSTRÅLING VED ÅBNING. SE IKKE IND I
STRÅLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NÄKYMÄTÖN LASERSÄTEILYLLE.
ÄLÄ TUIJOTA SÄTEESEEN ÄLÄKÄ KATSO SITÄ OPTISEN LAITTEEN
LÄPI.
VARNING-OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD.
STIRRA EJ IN I STRÅLEN OCH BETRAKTA EJ STRÅLEN GENOM
OPTISKT INSTRUMENT.
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Set name set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK
3,000 VRMS
Set time 6 secs
Set current (Cutoff current) 4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
PROBE
AC
OUT
UNIT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER

XL-MP40H
1 – 2
[3] SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
Except for U.K.
General
Amplifier
Tuner
CD player
Cassette deck
Speaker
Power source AC 230 V, 50 Hz
Power
consumption Power on: 25 W
Power stand-by: 0.9 W
Dimensions Width: 160 mm (6-5/16")
Height: 240 mm (9-1/2")
Depth: 245 mm (10")
Weight 2.5 kg (5.5 lbs.)
Output power PMPO: 30 W (total)
MPO: 15 W (7.5 W + 7.5 W) (DIN 45 324)
RMS: 10 W (5 W + 5 W) (DIN 45 324)
Output terminals Speakers: 4 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Input terminals Video/Auxiliary (audio signal):
500 mV/47 k ohms
Frequency range FM: 87.5 - 108.0 MHz
AM: 522 - 1,620 kHz
Type Compact disc player
Signal readout Non-contact, 3-beam semiconductor laser
pickup
D/A converter 1-bit D/A converter
Frequency
response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)
Frequency
response 50 - 14,000 Hz (normal tape)
Signal/noise ratio 50 dB (recording/playback)
Wow and flutter 0.35 % (DIN 45 511)
Type 10 cm (4") full-range speaker
Maximum input
power 10 W
Rated input power 5W
Impedance 4 ohms
Dimensions Width: 145 mm (5-3/4")
Height: 240 mm (9-1/2")
Depth: 180 mm (7-1/16")
Weight 1.4 kg (3.1 lbs.)/each
For U.K.
General
Amplifier
Tuner
CD player
Cassette deck
Speaker
Power source AC 230 V - 240V, 50 Hz
Power
consumption Power on: 25 W
Power stand-by: 0.9 W
Dimensions Width: 160 mm (6-5/16")
Height: 240 mm (9-1/2")
Depth: 245 mm (10")
Weight 2.5 kg (5.5 lbs.)
Output power RMS: 10 W (5 W + 5 W) (10 % T.H.D.)
Output terminals Speakers: 4 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Input terminals Video/Auxiliary (audio signal):
500 mV/47 k ohms
Frequency range FM: 87.5 - 108.0 MHz
AM: 522 - 1,620 kHz
Type Compact disc player
Signal readout Non-contact, 3-beam semiconductor laser
pickup
D/A converter 1-bit D/A converter
Frequency
response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)
Frequency
response 50 - 14,000 Hz (normal tape)
Signal/noise ratio 50 dB (recording/playback)
Wow and flutter 0.3 % (WRMS)
Type 10 cm (4") full-range speaker
Maximum input
power 10 W
Rated input power 5W
Impedance 4 ohms
Dimensions Width: 145 mm (5-3/4")
Height: 240 mm (9-1/2")
Depth: 180 mm (7-1/16")
Weight 1.4 kg (3.1 lbs.)/each
Specifications for this model are subject to change without prior
notice.

XL-MP40H
1 – 3
[4] NAMES OF PARTS
1.Disc Compartment
2.Remote Sensor
3.On/Stand-by Button
4.Disc Play or Pause, Tape Play,
Tuning Up Button
5.Disc Track Down or Fast Reverse, Tape Rewind,
Tuner Preset Down Button
6.Disc or Tape Stop, Tuning Down Button
7.Disc Track Up or Fast Forward, Tape Fast Forward,
Tuner Preset Up Button
8.Cassette Compartment
9.Headphone Socket
10.Disc Eject Button
11.Function Selector Button
12.Memory/Set Button
13.Bass/Treble Selector Button
14.Volume Control
15.Tape Record Pause Button
16.Tape Record Indicator
17.Sleep Indicator
18.Disc Random Play Indicator
19.Memory Indicator
20.MP3 Track Indicator
21.WMA Track Indicator
22.Timer Play Indicator
23.Disc Play Indicator
24.Disc Repeat Indicator
25.FM Stereo Mode Indicator
26.FM Stereo Receiving Indicator
27.AC Power Input Socket
28.FM/AM Loop Aerial Socket
29.Video/Auxiliary (Audio Signal) Input Sockets
30.Speaker Terminals
1
3
10
22
23
24
4
5
6
7
12
14
11
13
2
8
9
15
18 19 20 21
25
26
28
30
16 17
29
27
1.Bass Reflex Duct
2.Full-Range Speaker
3.Speaker Wire
4.Remote Control Transmitter
5.On/Stand-by Button
6.Disc Button
7.Video/Auxiliary Button
8.Disc Fast Reverse, Tuning Down Button
9.Disc Track Down, Tape Rewind, Tuner Preset Down,
Time Down Button
10.Disc or Tape Stop Button
11.Memory Button
12.Clear Button
13.Clock Button
14.Timer Button
15.Shift Button
16.Bass/Treble Selector Button
17.Tuner and Band Selector Button
18.MP3/WMA Display Button
19.Tape Button
20.Disc Fast Forward, Tuning Up Button
21.Disc Track Up, Tape Fast Forward, Tuner Preset Up,
Time Up Button
22.Disc or Tape Play Button
23.Disc Pause Button
24.Random/Repeat Button
25.Sleep Button
26.Direct Search Buttons
27.Tape Record Pause Button
28.Volume Up and Down Buttons
3
7
8
10
28
16
26
22
19
20
23
4
6
5
15
14
18
21
25
27
17
9
11 24
13
12
2
1Placing the speaker system:
The left and right speakers have
individual shapes. For best perfor-
mance, place the speakers ac-
cording to the illustration on the
right.
Note:
The speaker grilles are not removable.
Right speakerLeft speaker

XL-MP40H
2 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT
1. MECHANISM SECTION
•Driving Force Check
•Torque Check
•Tape Speed
2. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
•AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
•Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
•FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
•FM Detection
Signal generator: 10.7 MHz FM sweep generator
•FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Torque Meter Specified Value
Play: TW-2412 Over 80 g
Torque Meter Specified Value
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
Test Tape Adjusting
Point Specified Value Instrument Connection
MTT-111 Variable Resis-
tor in motor. 3,000 ± 30 Hz Headphone Terminal
Figure 1
Test Stage Frequency Frequency
Display Setting/ Adjusting
Parts
Instrument
Connection
IF 450 kHz 1,602 kHz L305 *1
AM Band
Coverage — 522 kHz (fL): L306 1.1 ± 0.1 V *2
AM Tracking 990 kHz 990 kHz L302 *3
*1. Input: IC301 1Pin Output: IC301 23Pin
*2. Input: Input is not connected Output: TP-VT (IC301 28Pin)
*3. Input: Antenna Output:IC301 23Pin
Frequency Display Check Point Instrument
Connection
87.5 MHz 87.5 MHz 1.5V ± 1.0V TP-VT
108 MHz 108 MHz 5.0V ± 1.0V TP-VT
TAPE MECHANISM
M901
Tape
Motor
Variable
resistor
in motor
Frequency Display Adjusting
Parts Instrument Connection
98.00 MHz
(30 dBµV) 98.00 MHz - Input: CNP301 Output: Speaker Terminal
Test
Stage Frequency Frequency Display Setting/ Adjusting
Parts
Instrument
Connection
FM IF 10.7 MHz 98.00 MHz - Input: Pin 36of
IC301
Output: Pin 23
of IC301
Test
Stage Frequency Frequency Display Setting/ Adjusting
Parts
Instrument
Connection
FM Band
Coverage — 87.50 MHz (fL): L307 1.5 ± 0.1 V *1
FM RF 98.00 MHz
(10 ~ 30dB) 98.00 MHz L304 *1
*1. Input: Antenna Output: 23 Pin of IC301
Figure 2 ADJUSTMENT POINTS
AM ANT.
FM OSC.
TP-VT=28Pin
28 2336
AM BAND
COVERAGE fL
FM RF AM
Tracking
FM BAND
COVERAGE fL
MAIN PWB-A1
AM IF

XL-MP40H
2 – 2
•Setting the Test Mode
Keeping the REW/REV button and BASS/TREBLE button pressed, turn on POWER. Then, the frequency is initially set in the memory as shown in
Table. Call it with the PRESET button to use it for adjustment and check of tuner circuit.
[2] TEST MODE
1. Turning on the test mode
Turning on the test mode
To turn on the specific test mode, press the ON/STAND-BY 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 ON/STAND-BY of remote control button is set to on, the test mode is not turned
on.
[Ordinary test mode]
1. CD Test Mode(TEST 1) ........................FUNCTION + Tuning Down
2. Tuner Test Mode(TEST 2)......................FUNCTION + Preset Down
3. Volume Test Mode(TEST 3)....................FUNCTION + Tuning Up
4. Timer Test Mode(TEST 4) ......................FUNCTION + Preset Up
5. Display Test Mode (TEST 5)...................FUNCTION + Bass/Treble
6. ALL KEY Test (TEST 6)....................MEMORY/SET + Tuning Up
7. Tuner clear test (TEST 7)................FUNCTION + Tape Rec
8. Soft reset test(TEST 8).....................MEMORY/SET + Preset Down
All test modes can be terminated by turning off the power with ON/STAND-BY key.
•CD test(TEST 1)
In step 5, hold down the AUX key on the remote control. The tracking servo is switched on/off.
From step 3, the pick up can be moved with the FF/REW key.
•Tuner test (TEST 2)
Preset No. BAND FM STEREO
1 FM STEREO FM 87.50 MHz
2 FM 108.00 MHz
3 FM 98.00 MHz
4 FM 90.00 MHz
5 FM 106.00 MHz
6 AM AM 522 kHz
7 AM 1620 kHz
8 AM 990 kHz
9 AM AM 603 kHz
11~25 ——————
26 FM MONO FM 106.00 MHz
27 FM 90.00 MHz
28 FM 98.00 MHz
29 FM 108.00 MHz
30 FM 87.50 MHz
Preset No. BAND FM STEREO
[cd step 1] Enter test mode. ←———————
↓Hold down the “memory” button
[cd step 2] After some steps, the laser turns on.
↓Hold down the “memory” button
[cd step 3] After some steps, focus search is performed.
↓Hold down the “memory” button
[cd step 4] After some steps, CLV rotation is performed.
↓Hold down the “memory” button
[cd step 5] CD playback starts.
↓Hold down the “stop” button to return to [cd step 1] ––––––––––
A
A
CH BAND FREQUENCY
1 FM STEREO FM 87.50 MHz
2 FM 108.00 MHz
3 FM 98.00 MHz
4 FM 90.00 MHz
5 FM 106.00 MHz
6 AM AM 522 kHz
7 AM 1620 kHz
8 AM 990 kHz
9 AM 603 kHz
10 AM AM 1404 kHz
11 ——————
·
·
35
36 FM MONO FM 106.00 MHz
37 FM 90.00 MHz
38 FM 98.00 MHz
39 FM 108.00 MHz
40 FM 87.50 MHz
CH BAND FREQUENCY

XL-MP40H
2 – 3
•VOLUME test (TEST 3)
Starting from level 23 (default), check all the levels (0 - 23 - MAX).
•TIMER test(TEST4)
At 1:05, the power turns on to activate the tape function, and turns off after 90 seconds (equivalent to 90 minutes on the unit).
•Display test(TEST 5)
When test mode is activated, the entire display lights up. As the “PLAY” key is pressed, half of the display lights up alternately.
•ALL KEY test(TEST6)
In the test mode, hold down all the buttons on the main unit and then press the “ON/STAND-BY”button. “OK” appears.
If only the “ON/STAND-BY” button is pressed, “ERROR” appears.
•Tuner clear test (TEST 7)
All tuner preset stations are cleared.
•Soft reset test (TEST 8)
All data in RAM is cleared.
[3] When the CD does not function
The CD section may not operate when the objective lens of the optical pickup is dirty. Clean the objective lens, and check the playback operation.
When this section does not operate even after the above step is taken, check the following items.
Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
Parts code
1. CD optical pickup Lens cleaner disc UDSKA0004AFZZ
HOW TO USE
1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has
the mark next to it.
2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.
3. You will hear music for about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop
button.
CAUTION
The CD lens cleaner should be effective for 30~50 operations, however if the brushes become worn out earller then please
replace the cleaner disc.
If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth.
Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the event of this happening then drink and /
or rinse with clean water and seek medical advice.
The CD cleaner disc must not be used on car CD players or on computer CD ROM drives.
All rights reserved. Unauthorized duplicating, broadcasting and renting this product is prohibited by law.
Cleaner Liquid Cleaning Disc
PARTS CODE: UDSKA0004AFZZ

XL-MP40H
3 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
CHAPTER 3. MECHANICAL DESCRIPTION
[1] REMOVING AND REINSTALLING THE MAIN PARTS
1. TAPE MECHANISM SECTION
Perform steps 1 to 5 and 8 of the disassembly method to remove the
tape mechanism. (See page 3-3.)
1.1. How to remove the record / playback and erase heads
(See Fig. 1)
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 adjust-
ment, be sure to apply screwlock.
1.2. How to remove the pinch roller (See Fig. 2)
1. Carefully bend the pinch roller pawl in the direction of the arrow
<A>, and remove the pinch roller (B1) x 1 pc., upwards.
1.3. How to remove the belts (See Fig. 3)
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.
1.4. How to remove the motor (See Fig. 4)
1. Remove the main belt.
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.
Figure 1
Figure 2
Figure 3
Figure 4
Erase Head
Record/
Playback Head
(A1)x2
ø2x8mm
(A2)x1
ø2x3mm
(A2)x1
ø2x7mm
<A>
Pinch Roller
(B1)x1 Pinch Roller
Pawl
Main Belt
(C1)x1
FF/REW Belt
(C2)x1
REW/FF
Clutch
Motor
(D1)x1
ø2x4mm
(D2)x3
Special
Screw
Motor
Bracket
Motor
Motor
(D1)x1
ø2x4mm

XL-MP40H
3 – 2
1.5. How to remove the flywheel (See Fig. 5)
1. Remove the belt.
2. Remove the stop washer (E1) x 1 pc., with a small precision screw-
driver to extract the flywheel from the capstan metal.
NOTE: When the stop washer is deformed or damaged, replace it with
a new one.
1.6. How to reinstall the parts
Install each part in the reverse order of the removal with care.
1.7. How to remove the tape mechanism PWB(See Fig. 6)
1. Remove the screw (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 mecha-
nism PWB.
Figure 5
Figure 6
Stop
Washer Driver
(E1)x1
Stop Washer
Mechanism
Chassis
Washerx2
Flywheel
Tape
Mechanism
PWB Tape
Mechanism
PWB
(F3)x2
Solder
Joint
(F2)x1
ø2x8mm
(F1)x1
ø2x3mm

XL-MP40H
3 – 3
[2] DISASSEMBLY
Note :
After removing the connector for the optical pickup from the connector,
wrap the conductive aluminium foil around the front end of the connec-
tor so as to protect the optical pickup from electrostatic damage.
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 disas-
sembling.
4) Take sufficient care on static electricity of integrated circuits and
other circuits when servicing.
STEP REMOVAL PROCEDURE FIGURE
1 Top Cabinet 1. Screw...........................(A1) x 5
2. Socket
.......................... (A2) x 2
3. Flat cable.....................(A3) x 1
1
2
2 Side Panel 1. Screw...........................(B1) x 4 1
3 Rear Panel 1. Screw..........................(C1) x 2 1
4 Main PWB 1. Screw..........................(D1) x 3
2. Socket.........................(D2) x 5
3. Socket.........................(D3) x 1
2
5 Front Panel 1. Screw...........................(E1) x 1 3
6 Power PWB 1. Screw...........................(F1) x 1
2. Screw...........................(F2) x 2 3
7 Display PWB 1. Knob............................(G1) x 1
2. Screw..........................(G2) x 8 4
8 Tape Mechanism 1. Open the cassette holder
2. Screw..........................(H1) x 4 4
9 Jack PWB 1. Screw...........................(J1) x 1 4
10 Switch PWB 1. Screw...........................(K1) x 1 5
11 CD Mechanism
(Note) 1. Screw...........................(L1) x 4 5
Figure 1
Figure 2
Figure 3
Side Panel
(Right)
Rear Panel
(C1)x1
ø3x6mm
(C1)x1
ø3x10mm
Side Panel
(Lift)
(A1)x1
ø3x12mm
(A1)x2
ø3x12mm
(A1)x1
ø3x12mm
(A1)x1
ø3x10mm
(A2)x1 (B1)x2
ø3x12mm
(B1)x2
ø3x6mm
Top Cabinet
CD Mechanism PWB
(A2)x1
Open/Close
Switch PWB
(D1)x2
ø3x12mm
(D1)x1
ø3x6mm
Main PWB
Power PWB
(A3)x1
(D2)x3
Tape
Mechanism
PWB
(D3)x1
(D2)x1
(D2)x1
(F2)x2
ø3x8mm
(E1)x1
ø3x6mm
(F1)x1
ø3x6mm
Power
PWB
Front Panel

XL-MP40H
3 – 4
These speaker CP-MP40H are available in assembles only and may
not be disassembled.
Figure 4
Figure 5
CP-MP40H
Jack PWB
(G2)x8
ø2.5x10mm
(H1)x4
ø2.5x10mm
(J1)x1
ø2.5x10mm
(G1)x1
Front Panel Display PWB
Tape
Mechanism
Open
Cassette
Holder
(K1)x1
ø2.5x10mm
Switch PWB
(L1)x4
ø2.5x10mm
Top Cabinet
CD Mechanism

XL-MP40H
3 – 5
-MEMO-

XL-MP40H
4 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
CHAPTER 4. DIAGRAMS
[1] BLOCK DIAGRAM
1
2
3
AM ANT.
BAND PASS
FILTER
FM IF
AM IF
75KHz
AM IF
FM IF
FM IF
+B
1
2
3
19202136 35 34
123 1817164 5 6 7 8 9 10 11 12 13 14 15
LV23002M
33 32 31
3
2
16
5
4
222324252627282930
VTCC
FMRF-IN
FMRF-OUT
VCC2
GND2
FM-OSC
AM-OSC
B02 B01
LP-OUT
LP-IN
PD
AGC
AMLOWOUT
DET-OUT
MPX-IN
VDD
XOUT
XIN
D0 CL DI R-OUT L-OUT FM-DET P-CCMP P-DET CE VSS AMIFIN FMIFIN VCC1 AM-MIX GND1 FM-MIX REG AMRF-IN
AM LOOP
ANTENNA
FM ANTENNA
TO DISPLAY PWB
AM OSC L306
FM RF
FM OSC
FM FRONT END
1
4
3
2
5
6
1
3
2
4
5
1
3
2
4
5
123457612 10 9 81113
LA4631++
POWER AMP.
+
-
-
+
POW_STB
(R)
(L)
POWER
TRANSFORMER
T200mA L 250V
AC POWER
SUPPLY CORD
Except for U.K.: AC 230 V, 50 Hz
U.K.: AC 230-240 V, 50 Hz
HEADPHONES
SPEAKER
TERMINAL
L-CH
R-CH
TP-VT
LINE
FILTER
LF651
F
B
A
E
FO+
TR+
TR-
FO-
ACTUATOR
TR+
FO+
FO-
C
F
B
A
E
TR-
C
D
VCC
VC
LD
VR
MD
D
GND
LD
VR
MD
CD PICKUP UNIT
CD MECHANISM UNIT (222)
MECHANISM PWB
+
+
-
-
PICKUP IN
SLED
MOTOR
SPINDLE
MOTOR
M
M
1
2
3
4
5
6
+B
-B
-B
P_MUTE
+5V
VP
P_CON
POW_STB
CD+B
654321
PLSN
470
FO
O
PLA
Y
-
+
L-CH
R-CH
M
TAPE
MOTOR
SOLENOID
FOOL
PLAY
PHOTO
INTERRUPTER
RECORD/PLAYBACK
HEAD
ERASE HEAD
TAPE MECHANISM ASS'Y
(221)
AN78L05
31
AN78L05
CONSTANT
VOLTAGE
REGULATOR
CONSTANT
VOLTAGE
REGULATOR
2
31
2
P_CON
CNP301
L302
D307
D306
L304
L307
D305
X301
Q301
CF304
CF303
CF301
L305
Q303
CF302
IC301
BF301
Q302
IC101
SO601
JK101
F101
CNS602
CNW602
CNP602
D104
VP
+5V
D101
D103
D102
T601
Q
6
Q613
Q104
Q664
Q662
Q665
Q660
Q612
Q611
Q658
Q661
RP602
RP601
D658
D659
D656
D657
CNP704
SW902
SOL901
M901
SW901
IC680
IC681
PLL(TUNER)
FM IF DET./FM MPX./AM IF
CONSTANT
VOLTAGE
AM BAND
COVERAGE fL
AM
Tracking
Figure 4-1 BLOCK DIAGRAM (1/3)

XL-MP40H
4 – 2
CNS701
10
18
13
14
12
11
15
17
20
19
16
1
2
3
4
5
6
7
8
9
TO DISPLAY PWB
W
B
F
B
A
E
FO+
TR+
TR-
FO-
C
D
VCC
VC
GND
LD
VR
MD
F
B
A
E
FO+
TR+
TR-
FO-
C
D
VCC
VC
GND
LD
VR
MD
8
6
5
3
13
14
15
16
7
4
2
1
9
10
11
12
8
6
5
3
13
14
15
16
7
4
2
1
9
10
11
12
M
UNIT (222)
B
+
+
-
-
SP+
SP-
SL+
SL-
PU-IN
GND
MP3 DECODER
DIGITAL SIGNAL
PROCESSOR
FOCUS/TRACKING/ SPIN/SLED DRIVER
16.93MHz
EFMIN
SLCO
AVDD
RF
LPF
PHLPF
AIN
CIN
BIN
DIN
FEC
RFMON
VREF
JITTC
EIN
FIN
TEC
TE
TEIN
LDD
LDS
VSS
AVDD
FDO
TDO
SLDO SPDO VVSS1 PDOUT1 PDOUT0 PCKIST VVDD1 DMUTEB PUIN DEFECT FSEQ C2F DVDD DVSS
DVDD1.8
VVDD3
VVSS3
DATACK
LRSY
DATA
TEST1
STDATA
STCK
STREQ
TEST0
CONT0
CONT1
CONT2
INTB1
INTB0
RESB
DO
DI
CL
CE
RCHO
LRVSS
LRVDD
LCHO XVDD
XIN
XOUT
XVSS
AMUTEB
DOUT DVDD
DVSS
DVDD1.8
VVSS2
VCOC2
VPREF2
VVDD2
VPDOUT2
DVSS
DVDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
39 40
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
LC78690
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
67
LA6548ND
VIN3
VG3
VO3+
VO3-
CD
RESET
REG-IN
VO4-
VO4+
VIN4
VG4
VREF
VIN2 REG-OUT VO2+ VO2- VG2 VO1- VG1
GND GND GND
VO1+ GND GND GND GND VCC MUTE
VCC
+B
+B
+B
7.7V15V
+B +B +B
+B +B
+B
+B
+B
+B
0-CD-CE
0-CD-CLK
O-CD-CMD
1-CD-DATA
0-CD-/RESET
+5V
EVR-CLK
EVR-SDO
SW
TABCAN
PLSIN
PLYREC
BIAS
TAMOTOR
TASOL
0-CD-CE
0-CD-CLK
O-CD-CMD
1-CD-DATA
0-CD-/RESET
1-TU-SDI
0-TU-SCK
0-TU-SDO
0-TU-CE
D-GND
-B
6789
12 13 14
16181920212223242528
5
23
AUX L
AUX R
_SW
TUNER L/R
CD/MP3 L/R
CD/MP3 L/R
PLSIN
TP_PLY
TP_BIAS
TAMOTOR
CD/MD L
CD/MD R
OUT2 OUT1 A1 A2 B1 B2 C1 C2
-VCC
SD
+VCC
GND
VOL2 VOL1
SEL-OUT1 SEL-OUT2
PB2P
REC2O REC1O
BD3881FV
AUDIO PROCESSOR/
RECORD/PLAYBACK AMP.
PLSN
470
+R
FOOL SW
BEAT CANCEL
MOT
SOL
PLAY SW
AUX IN
AUX R
AUX L
L_CH
L_CH
R_CH
R_CH
TUNER R
TUNER L
SOL
PB1P
+5V
+9V
H
H
O
L
A
Y
T
O
R
RUPTER
A
CK
A
D
ISM ASS'Y
P_MUTE
CNP801
CNW802
CNS802
FC801
Q802
X801
Q805
IC802
IC801
Q801
Q655
Q659Q657
Q663
Q806
CNP701
IC401
SO401
Q410
Q411
Q225
Q228
Q237
Q238
Q216
Q215
Q218
Q217
Q211
Q212
Q207Q210
Q214
Q213
Q209
Q208 Q206
Q230 Q227
Q226
9
02
01
Figure 4-2 BLOCK DIAGRAM (2/3)

XL-MP40H
4 – 3
TO MAIN SECTION TO MAIN SECTION
D701~704
LED
SW700
VOLUME
83
86
514 36
79 465356
Q705
Q701
Q703
Q704
~ ~
~
S0
S0 S31
C0 C3
S23 S24
S31
COM0
COM3
39
42
40
21
38
37
36
34
33
32
2926 31 99 12345678910
100 1124
89
80
55
43
14 VSS1
VSS3
90 VDD3
VSS2
V3
13
12
15
16
19
18 KEY1
96
CF2
CF1
XT1
XT2
KEY2
SW702-SW704
SW701
SW707-SW709
SW705,SW706
KEY
28
6
5
4
3
2
1
19
20
18
17
16
14
15
13
12
11
10
6
5
4
9
8
7
3
2
1
SW-TAPE
0-SOL_TP2
0-MOTOR_TP
0-REC/PB
1-TP_RUN_PULSE
0-BIAS_TP
(B-CAN)
IRQ
HOLD RESET
123
REMOTE
SENSOR
GP1U281X
RX701
54
17
VDD2
VDD1
U_CON5V
D_GND
U_CON5V
PLUSE_IN
0-MOTOR_TP
0-REC/PB
0-BIAS_TP
0-SOL_TP
SW
(B-CNA)
O_CD_CE
O_CD_CLK
O_CD_CMD
I_CD_DATA
CD/RESET
O_TU_CE
O_TU_DO
O_TU_SCK
I_TU_SDI
EVR_CLK
EVR_SDO
EVR_CLK
EVR_SDO
CD_CE
CD_RESET
0-CD-DATA
0-P-MUTE
O_TU_CE
O_TU_CLK
I_TU_DATA
O_TU_DATA
0-CD_CLK
1-CD_DATA
CD+B
P_STB
P_CON
LED_CON
VP
+5V
P_MUTE
P_CON
P_STB
CD+B
3
2
1
AN78L05
CONSTANT
VOLTAGE
REGULATOR
VOL_ENC (JOG)
SW-CLID
I-POWER_KEY
IXA044SJ
SYSTEM
MICROCOMPUTER
8MHz
32.768kHz
DISC EJECT
+5V
+5V
IC701
LCD701
FL DISPLAY
X701
X702
SW710
CNP701 CNP704
CNS701
CNS704
IC705
Figure 4-3 BLOCK DIAGRAM (3/3)

XL-MP40H
5 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
CHAPTER 5. CIRCUIT DESCRIPTION
[1] WAVEFORMS OF CD CIRCUIT
T
FDO
TDO
Stopped
CH1=500 mV
DC 10:1
CH3=500 mV
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.000 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH1
v/DIV
500 mV
1IC801 22
2IC801 23
FDO
TE
Stopped
CH1=500 mV
DC 10:1
CH2=10 V
DC 10:1
CH3=1 V
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
-3 div -1 div 0 div +1 div +3 div
CH Position To
CH2
Position
0.20 div
1IC801 22
3IC801 16
Vp-p=1.0 V~1.3 V
0.5 mV/div,0.5 µsec/div
4IC801 2
T
TE
Stopped
CH1=10 V
DC 10:1
CH2=1 V
DC 10:1
100 ms/div
(100 ms/div)
NORM:100 kS/s
2
=Record Length=
Smoothing : ON CH1 : 0.0 V
CH2 : 0.00 V
Main : 100 K
Zoom : 2 K
Mode : NORMAL
Type : EDGE CH1
Delay : 2.924 ms
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger=
=Filter= =Offset=
3IC801 16
T
T
FDO
SPDO
Stopped
CH1=200 mV
DC 10:1
CH2=500 mV
DC 10:1
500 ms/div
1999/04/07 09:51:15
(500 ms/div)
NORM:20 kS/s
2
1
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.000 V
Main : 100 K
Zoom : 2 K
Mode : NORMAL
Type : EDGE CH2
Delay : 2.924 ms
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
1
IC801 22
5
IC801 25
T
FDO
PDOUT1
PDOUT0
Stopped
CH1=500 mV
DC 10:1
CH3=1 V
DC 10:1
CH4=1 V
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
4
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.0 V
Main : 100 K
Zoom : 2 K
Mode : AUTO
Type : EDGE CH2
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH1
v/DIV
500 mV
1999/04/05 17:33:17
1
IC801 22
6
IC801 28
7
IC801 27
T
T
DOUT
Stopped
CH1=2 V
DC 10:1
500 ns/div
1999/04/07 09:25:28
(500 ns/div)
NORM:200 MS/s
1
=Record Length=
Smoothing : ON CH1 : 0.00 V
CH2 : 0.00 V
Main : 1 K
Zoom : 100
Mode : NORMAL
Type : EDGE CH1
Delay : 2.887 ms
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger=
=Filter= =Offset=
8
IC801 69
T
T
DATA
DATACK
LRSY
Stopped
CH1=2 V
DC 10:1
CH2=2 V
DC 10:1
CH3=2 V
DC 10:1
5 µs/div
(5 µs/div)
NORM:100 kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.00 V
CH2 : 0.00 V
Main : 5 K
Zoom : 100
Mode : AUTO
Type : EDGE CH3
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH3
v/DIV
2V
1999/04/05 20:50:17
9
IC801 60
IC801 59
IC801 58
10
11

XL-MP40H
5 – 2
[2] VOLTAGE
1.38V
1.47V
1.45V
1.2V
1.6V
1.7V
1.67V
1.63V
1.42V
1.4V
1.46V
1.74V
1.75V
1.74V
1.43V
1.43V
1.43V
2V
0.18V
0V
2.9V
1.47V
1.5V
1.5V
1.6V
0V
0V
1V
0.93V
2.74V
0V
2.8V
0V
2.8V
0V
2.8V
0V
1.8V
2.8V
0V
2.8V
0V
0.45V
3V
3V
0V
3.23V
2.8V
2.8V
2.8V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
2.57V
1.44V
2.1V
2.1V
0V
1.8V
0V
2.8V
0V
0V
0V
1V
1.14V
2.7V
1.64V
3.3V
0V
1.64V
2.9V
1.4V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
PIN
NO. VOLTAGE
IC801
2.2V
2.2V
2.45V
0V
5V
5V
2.2V
2.2V
4V
3.86V
2.85V
2.28V
2.28V
0V
0V
0V
0V
3.4V
1.26V
1.7V
3.43V
2.2V
2.3V
0V
2.6V
2.14V
2.14V
1.3V
2.7V
1V
4.9V
4.9V
4.9V
4.9V
0V
1V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
PIN
NO. VOLTAGE
IC301
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.5V
0.7V
-4.5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PIN
NO. VOLTAGE
IC401
4.13V
1.63V
0V
1.63V
1.55V
12V
18.2V
9.2V
0V
0V
0V
9.3V
0V
1
2
3
4
5
6
7
8
9
10
11
12
13
PIN
NO. VOLTAGE
IC101
9.3V
9.2V
8.5V
E
C
B
PIN
NO. VOLTAGE
Q215
0V
0V
4V
E
C
B
PIN
NO. VOLTAGE
Q216
9.3V
0V
9.3V
E
C
B
PIN
NO. VOLTAGE
Q217
0V
9.3V
0V
E
C
B
PIN
NO. VOLTAGE
Q218
7.75V
2.77V
1.45V
1.47V
3.9V
3.3V
0V
0V
0V
3.5V
3.7V
1.46V
1.45V
2.9V
1V
2.9V
3.4V
1.45V
1.45V
3.7V
3.6V
0V
0V
0V
3.6V
3.6V
1.46V
1.46V
1.46V
7.8V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
PIN
NO. VOLTAGE
IC802
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
5V
1.7V
2.4V
0V
0V
0V
5V
0V
5V
0.5V
0V
0V
0V
5V
0V
5V
0V
5V
0V
0V
4.5V
0V
5V
0V
0V
5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
2.4V
2.4V
0V
2.4V
2.4V
9
8
7
6
5
4
3
2
1
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
PIN
NO. VOLTAGE
IC701
2.4V
2.4V
2.4V
4.8V
0V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
2.4V
0V
1.7V
3.3V
2.4V
2.4V
2.4V
2.4V
0V
0V
0V
5V
0V
0V
0V
0V
0V
5V
0V
0V
0V
0V
PIN
NO. VOLTAGE
51
64
63
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
62
61
60
59
58
57
56
55
54
53
52
85
84
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
83
82
81
0V
3.3V
0.54V
E
C
B
PIN
NO. VOLTAGE
Q104
5V
-9V
5V
E
C
B
PIN
NO. VOLTAGE
Q206
-3V
0V
-9V
E
C
B
PIN
NO. VOLTAGE
Q207
-3V
0V
-9V
E
C
B
PIN
NO. VOLTAGE
Q208
-3V
0V
9V
E
C
B
PIN
NO. VOLTAGE
Q209
10.5V
18V
11V
E
C
B
PIN
NO. VOLTAGE
Q301
1V
2.7V
1.7V
E
C
B
PIN
NO. VOLTAGE
Q302
0V
5V
0V
E
C
B
PIN
NO. VOLTAGE
Q214
0V
4.8V
0V
E
C
B
PIN
NO. VOLTAGE
Q237
0V
3.6V
0.8V
E
C
B
PIN
NO. VOLTAGE
Q303
4.9V
4.9V
1.2V
E
C
B
PIN
NO. VOLTAGE
Q238
0V
0V
0V
E
C
B
PIN
NO. VOLTAGE
Q410
0V
0V
0V
E
C
B
PIN
NO. VOLTAGE
Q411
-5V
-12.7V
-5.6V
E
C
B
PIN
NO. VOLTAGE
Q611
20V
20V
0.7V
E
C
B
PIN
NO. VOLTAGE
Q612
20V
20V
5.1V
E
C
B
PIN
NO. VOLTAGE
Q613
3.5V
18V
9.1V
E
C
B
PIN
NO. VOLTAGE
Q655
0V
0V
0.7V
E
C
B
PIN
NO. VOLTAGE
Q657
9.3V
17.2V
9.9V
E
C
B
PIN
NO. VOLTAGE
Q658
18V
18V
0.6V
E
C
B
PIN
NO. VOLTAGE
Q659
11V
11V
0.7V
E
C
B
PIN
NO. VOLTAGE
Q660
18V
18V
0.7V
E
C
B
PIN
NO. VOLTAGE
Q661
0V
0V
4V
E
C
B
PIN
NO. VOLTAGE
Q662
5V
5V
0.6V
E
C
B
PIN
NO. VOLTAGE
Q663
1.3V
1.3V
0.7V
E
C
B
PIN
NO. VOLTAGE
Q664
-12V
-12V
-8V
E
C
B
PIN
NO. VOLTAGE
Q665
0V
4.8V
0V
E
C
B
PIN
NO. VOLTAGE
Q701
0V
0V
0.7V
E
C
B
PIN
NO. VOLTAGE
Q703
0V
5V
0V
E
C
B
PIN
NO. VOLTAGE
Q704
0V
0V
0.8V
E
C
B
PIN
NO. VOLTAGE
Q705
2.76V
1.8V
2V
E
C
B
PIN
NO. VOLTAGE
Q801
2.9V
6.3V
3.6V
E
C
B
PIN
NO. VOLTAGE
Q802
5.1V
0V
10.6VV
1
2
3
PIN
NO. VOLTAGE
IC680
5.1V
0V
20V
1
2
3
PIN
NO. VOLTAGE
IC681
5.7V
0.6V
10V
1
2
3
PIN
NO. VOLTAGE
IC705
3.27V
5V
3.93V
E
C
B
PIN
NO. VOLTAGE
Q805
7.9V
18.1V
8.55V
E
C
B
PIN
NO. VOLTAGE
Q806

XL-MP40H
6 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] NOTES ON SCHEMATIC 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 resis-
tor. 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.
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal 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.
[2] TYPES OF TRANSISTOR AND LED
REF. NO DESCRIPTION POSITION
SW700 VOLUME ON—OFF
SW701 ON/STAND-BY ON—OFF
SW702 STOP/TUNING DOWN ON—OFF
SW703 REW/PRESET DOWN ON—OFF
SW704 PLAY/CD PAUSE/TUNING UP ON—OFF
SW705 MEMORY/SET ON—OFF
SW706 FUNCTION ON—OFF
SW707 REC/PAUSE ON—OFF
SW708 BASS/TREBLE ON—OFF
SW709 FF/PRESET UP ON—OFF
SW710 DISC EJECT ON—OFF
SW901 FOOL PROOF ON—OFF
SW902 PLAY ON—OFF
REF. NO DESCRIPTION POSITION
(1) (2) (3)
(S) (G) (D)
EC B
FRONT
VIEW FRONT
VIEW
2HA1015 GR
2HC1815 GR
KTC3200 GR
2SB562 C
KRC101 M
2SB561 C
KRC106 M
KRC107 M
KRA107 M
KTC2026 Y
SVC201
FRONT
VIEW
2SC3052 F+
2SC5477++
2SA1235 F+
BE
C
SVC347SMPG3372X
2SK2541
BE
C

XL-MP40H
6 – 2
[3] WIRING SIDE OF PWB/SCHEMATIC DIAGRAM
Figure 6-2 SCHEMATIC DIAGRAM (1/10)
MAIN
A
B
C
D
E
F
G
H
123456
NOTES ON SCHEMATIC DIAGRAM can be found on page 6-1
POWER AMP.
0
2
1/50
1/50
0.1
22/50
100K
12P
(CH) 0.018
1µH
1SS133
0
0.1
3.3K
4.7/50
0.001
22/50
0.033
10K
10K
33
2.2K
680
47µH
47/50
1SS133
1/50
0.01
0.01
0.1 22/50
100K
4.7K
0.01
1K
100K
27P
(UJ)
4.7K
0.33/50
100P
(CH)
5P
33P
(CH)
(UJ)
0.015
1K
33P (CH)
330 5P
0.001
SVC201
2.2K
0.047
100
10µH
10
560P
0.0047
0.001
0.022
SVC201
100K
220
0.01
100K
0
0.001
0.01
10P
(UJ)
10
0
330
22/50
M
1/50
0.0047
10
0.1
10
0.1
0.0047
0.0047
LA4631++
2
1
3
2
1
4
5
6
7
8
9
10
11
1213
123
1
36
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
20212223242526272829303132333435
SVC347S
NC
GND2
AMRF-IN REG FM-MIX GND1 AM-MIX VCC1 AMIFIN FMIFIN VSS CE P-DET P-CCMP FMDET L-OUT R-OUT DI CL XOUT
VDD
MPX-IN
DET-OUT
AMLOWOUT
AGC
PD
LP-IN
LP-OUT
B01 B02
AM-OSC
FM-OSC
VCC2
FMRF-OUT
FMRF-IN
OUT1 P_GND OUT2 VCC P.P STBY IN2
6 5
4
3
1
2
6
4
3
2
1
L-CH
AM
GND
FM
FROM FM/AM ANTENNA
2SC5477++
SPEAKER BOX Ass'y
FM RF
FM BAND COVERAGE fL
AM
Tracking
BAND PASS
FILTER
AM IF
AM IF
FM IF
FM IF
TP-VT
AM BAND
COVERAGE fL
FM IF
CHASSIS
GND
2SC5477++
D305
R303
C305 C308
R310
R315
C318
R311
R304
C310
L306
C311
C348
JR304
C326 C330
C
C333
C332
C329
R316
C335
Z
C325
R313
R314
C321
C320
C346
C345
C344
C312
R308
C316
R329 C343
C317 L307 D307
R328
Q302
JP302
L304
R307
C314
R305
C309
C307
R306
L302
C349
C306
BF301
D306
L301
D303
D302
C301 C302
CNP301
C347
L303
R336
R334
R332
C319
C313
C315
CF302
C327
JR303
C323
R309
R312
CF303
R331
Q303
R333
CF301
C322
C331
L30
C32
C32
CF304
L305
IC101
R107
L103
R103
C105 C109
C103
C131
C130
C106
C107
R327
R302
C303