Sharp XL-MP150 User manual

SERVICE MANUAL
XL-MP150
No. S1508XLMP150/
MICRO COMPONENT SYSTEM
XL-MP150
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] IMPORTANT SERVICE NOTES (FOR
U.S.A. ONLY) ................................................. 1-1
[2] SPECIFICATIONS ......................................... 1-2
[3] NAMES OF PARTS........................................ 1-3
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT ............................................... 2-1
[2] TEST MODE .................................................. 2-3
[3] Standard Specification of Stereo System
Error Message Display Contents ................... 2-5
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. FLOWCHART
[1] TROUBLESHOOTING ..................................7-1
CHAPTER 8. OTHERS
[1] FUNCTION TABLE OF IC .............................8-1
[2] FL DISPLAY ................................................8-10
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-MP150 Micro Component System consisting of XL-
MP150 (main unit) and CP-MP150 (speaker system).

XL-MP150
i
AudioXL-MP150Service ManualXLMP150MarketE
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
Indicates lead-free solder of tin, silver and copper.
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.
Lead-free wire solder for servicing
Ref No. Description Parts No.
PWB-A 92LPWB6274MANS
92LPWB5609TUNS
QPWBF0027AWZZ
QPWBFA028AWA0
PWB-C
PWB-D
PWB-E
PWB-G
MAIN (A1),DISPLAY (A2),TERMINAL (A3),SWITCH (A4)
PWB-B 92LPWB6274PWRS
92LPWB6230CDUS
POWER (B1),JACK (B2)
LED
TUNER
CD MP3
CD MOTOR (PWB ONLY)
QPWBF1055AWZZ
PWB-F
CD CHANGER MOTOR (PWB ONLY)
"MAIN,DISPLAY,TERMINAL,SWITCH,POWER,JACK,TUNER,CD MP3,CD MOTOR (PWB ONLY),
CD CHANGER MOTOR (PWB ONLY),LED 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.

XL-MP150
1 – 1
AudioXL-MP150Service ManualXLMP150MarketE
CHAPTER 1. GENERAL DESCRIPTION
[1] IMPORTANT SERVICE NOTES (FOR
U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the following
safety checks.
1. Inspect all lead dress to make certain that leads are not pinched or
that hardware is not lodged between the chassis and other metal
parts in the audio product.
2. Inspect all protective devices such as insulating materials, cabinet,
terminal board, adjustment and compartment covers or shields,
mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage current in
the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor paral-
leled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as conduit or electrical
ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity
to measure the AC voltage drop across the resistor (See diagram).
* Connect the resistor connection to all exposed metal parts having a
return path to the chassis (antenna, metal cabinet, screw heads,
knobs and control shafts, escutcheon, etc.) and measure the AC
voltage drop across the resistor.
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) or
more is excessive and indicates a potential shock hazard which must
be corrected before returning the audio product to the owner.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF
THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE

XL-MP150
1 – 2
[2] SPECIFICATIONS
General
Amplifier
CD player
Tuner
Cassette deck
Speaker
Power source AC 120 V, 60 Hz
Power
consumption
96 W
Dimensions Width: 7-1/4" (185 mm)
Height: 10-1/4" (260 mm)
Depth: 12" (307 mm)
Weight 13.9 lbs. (6.3 kg)
Output power 110 watts minimum RMS per channel into 6
ohms from 100 Hz to 20 kHz, 10% total har-
monic distortion
Output terminals Speakers: 6 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Subwoofer pre-out (audio signal):
200 mV/10 k ohms at 70 Hz
Input terminals Video/Auxiliary (audio signal):
500 mV/47 k ohms
Type 5-disc multi-play 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 range FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Frequency
response
50 - 14,000 Hz (normal tape)
Signal/noise ratio 50 dB (recording/playback)
Wow and flutter 0.3 % (WRMS)
Type 2-way type light-up speaker system
2" (5 cm) tweeter
5-1/8" (13 cm) woofer
Maximum input
power
220 W
Rated input power 110 W
Impedance 6 ohms
Dimensions Width: 7-1/4" (185 mm)
Height: 10-1/4" (260 mm)
Depth: 10-1/4" (260 mm)
Weight 6.8 lbs. (3.1/ kg/each)
■
■
■
■
■
■
Specifications for this model are subject to change without prior
notice.

XL-MP150
1 – 3
[3] NAMES OF PARTS
Front panel
1. Disc Trays
2. Timer Indicator
3. Power On/Stand-by Button
4. Clock/Timer Button
5. Tape Record Pause Button
6. Cassette Compartment
7. Headphone Jack
8. Disc Tray Open/Close Button
9. Disc Number Select Buttons
10. Disc Direct Play Button
11. Remote Sensor
12. Volume Control
13. Memory/Set Button
14. Equalizer Mode Select Button
15. Extra Bass (Surround) /Demo Mode Button
16. CD Button
17. Tape Button
18. Tape Reverse Play Button
19. Disc Track Down or Fast Reverse, Tape Fast Wind,
Tuner Preset Down, Time Down Button
20. Tape Reverse Mode Select Button
21. Disc Track Up or Fast Forward, Tape Fast Wind,
Tuner Preset Up, Time Up Button
22. Tuner (Band) Button
23. Video/Auxiliary Button
24. Disc Play or Repeat, Tape Forward Play Button
25. Tuning Down Button
26. Tuning Up Button
27. Disc or Tape Stop Button
■
Display
1. Disc Number Indicators
2. MP3/WMA Folder Indicator
3. MP3/WMA Title Indicators
4. MP3 Indicator
5. WMA Indicator
6. Sleep Indicator
7. Timer Play Indicator
8. Timer Recording Indicator
9. Tape Record Indicator
10. MP3/WMA Total Indicator
11. Daily Timer Indicator
12. FM Stereo Mode Indicator
13. FM Stereo Receiving Indicator
14. Tape Forward Play Indicator
15. Tape Reverse Mode Indicator
16. Memory Indicator
17. Tape Reverse Play Indicator
18. Extra Bass Indicator
19. Disc Repeat Play Indicator
20. Disc Pause Indicator
21. Disc Play Indicator
Rear panel
1. Speaker Terminals
2. AC Power Cord
3. FM 75 Ohms Antenna Terminal
4. FM Antenna Ground Terminal
5. AM Loop Antenna Jack
6. Video/Auxiliary (Audio Signal) Input Jacks
7. Cooling Fan
8. Speaker Light-up Jacks
9. Subwoofer Pre-output Jack
Speaker system
8
9
5
4
3
6
7
1
2
12 3 45 6789
11 12 13
10
17
16
18 19
20 21 15
14
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Wire
5. Speaker Light-up Wire
3
4
5
1
2
■
■
■

XL-MP150
1 – 4
Remote control
1. Remote Control Transmitter
2. Disc Number Select Buttons
3. Cursor Buttons
4. Character Input/Disc Direct Search Buttons
5. Equalizer Mode Select Button
6. Extra Bass (Surround) Button
7. Power On/Stand-by Button
8. CD Button
9. Tuner (Band) Button
10. Tape Button
11. Video/Auxiliary Button
12. Volume Up and Down Buttons
13. Disc Clear/Dimmer Button
14. Disc Random Button
15. Disc Stop Button
16. Tape Reverse Play Button
17. Tape Stop Button
18. Memory Button
19. Disc Pause Button
20. Disc Play or Repeat Button
21. Tape Forward Play Button
22. Tape Record Pause Button
23. MP3/WMA Navigation Mode Select Button
24. MP3/WMA Display Button
25. Enter Button
26. Clock/Timer Button
27. Character Button
28. Disc Track Down or Fast Reverse, Tape Fast Wind,
Tuner Preset Down, Time Down Button
29. Disc Track Up or Fast Forward, Tape Fast Wind,
Tuner Preset Up, Time Up Button
10
11
12
26 27 28 29
8
9
7
1
2
4
3
5
6
13 18
20
22
21
15
16
19
17
14
23 24 25
CD
■

XL-MP150
2 – 1
AudioXL-MP150Service ManualXLMP150MarketE
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT
1. MECHANISM SECTION
•Driving Force Check
•Torque Check
2. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
•AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
•FM RF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
•FM IF
Signal generator: 10.7MHz FM modulated
•Tape Speed
3. CD SECTION
•Adjustment
Since this CD system incorporates the following automatic adjust-
ment functions, readjustment is not needed when replacing the
pickup. Therefore, different PWBs and pickups can be combined
freely.
Each time a disc is changed, these adjustments are performed
automatically. Therefore, playback of each disc can be performed
under optimum conditions.
Items adjusted automatically
1) Offset adjustment (The offset voltage between the head amplifier
output and the VREF reference voltage is compensated inside the
IC.)
* Focus offset adjustment
* Tracking offset adjustment
Torque Meter Specified Value
Play: TW-2111 Over 80 g
Torque Meter Specified Value
Play: TW-2111 30 to 80 g.cm
Fast forward: TW-2231 70 to 180 g.cm
Rewind: TW-2231 70 to 180 g.cm
Test Stage Frequency Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
AM IF 450 kHz 1,602 kHz T351 *1
AM Band
Coverage
— 531 kHz (fL): T306
1.1 ± 0.1 V
*2
AM Tracking 990 kHz 990 kHz (fL): T303 *1
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
Test Stage Frequency Frequency
Display
Setting/
Adjusting
Point
Instrument
Connection
FM Band
Coverage
— 87.50 kHz T301 (fL):
1.3 ± 0.1 V
*1
FM RF 98.00 MHz
(10-30 dB)
98.00 MHz L312 *2
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
Test Stage Frequency Frequency
Display
Setting/
Adjusting
Point
Instrument
Connection
IF 10.7 MHz 98 MHz T302
(Turn the
core of trans-
former T302
fully counter-
clock wise)
*1
*1. Input: Antenna Output: TP301
Test Tape Adjusting
Point
Specified
Value
Instrument
Connection
Normal
speed
MTT-111 Variable
Resistor in
motor.
3,000 ± 30 Hz Speaker Ter-
minal (Load
resistance: 6
ohms)
Figure 1
Figure 2 ADJUSTMENT POINTS
TAPE MECHANISM
Tape
Motor
Variable Resistor in motor
AM
LOOP
ANTENNA
IC302
T351
T301
IC303
T303
T306
T302
L312
CNP301
SO302
IC301
TP302
TP301
AM TRACKING fL
AM BAND
COVERAGE fL
AM IF
FM RF
FM IF
FM OSC
FM ANTENNA
TERMINAL
TUNER PWB-C
20
R356
C393

XL-MP150
2 – 2
2) Tracking balance adjustment
3) Gain adjustment (The gain is compensated inside the IC so that the
loop gain at the gain crossover frequency will be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
4. CD ERROR CODE DESCRIPTION
* 'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of 'ER-
CD**'. 'ER-CD**' display will only be displayed when error had been
detected for the 5th times.
Error Explanation
01 When Pickup set inner position, inner switch cannot detect
'ON' level for 10 secs.
10* CAM error. Can't detect CAM switch when CAM is moving.
11* When it detect cam operation error during initialize process.
20* TRAY error. Can't detect TRAY switch when TRAY is mov-
ing.
21* When it detect TRAY operation error during initialize pro-
cess.
31 When it change to CD function, DSP cannot read initial data.

XL-MP150
2 – 3
[2] TEST MODE
•Setting the test mode
During stand-by mode, press POWER ON/STAND-BY button while
pressing down the button and X-BASS/DEMO button. then, press
the CD button to enter the test mode.
IL isn’t done
OPEN/CLOSE operation is using manual. IL isn’t done
<< >>,<< >>buttons make pick's slide possible. IL isn’t done
to page 2-4
<<PLAY>> key input.
C D T E S T
A
Do TOC IL. Do normal play.
When these following key is input into PLAY key, track num-
ber can be appoint directly.
<<MEMORY>>
key input.
<< 1>> key: Track 4
<< 2>> key: Track 9
<< 3>> key: Track 15
Adjustment result automatically will
display as below for each 2 sec:
a) "FOF_XXXX"
b) "TOF_XXXX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
––––––––
<<STOP>> key input.
STOP
explanation:
a) Focus off set = "FOF_XXXX"
b)Tracking off set = "TOF_XXXX"
c)Tracking balance = "TBAL_XX"
d)Tracking Gain = "TGAN_XX"
f) Focus Gain = "FGAN_XX"
g) RF level shift = "RFLS_XX"
VOL — Last memory
P. G E Q — F L AT
X-BASS — OFF
To cancel : Power OFF

XL-MP150
2 – 4
Sliding the PICKUP with<< >>, << >> button must only be
in STOP mode.
<<MEMORY/SET>> key input.
Laser ON.
<<MEMORY/SET>> key input.
Tracking OFF play at that specific point.
<<MEMORY/SET>> key input.
Tracking ON play from that specific point.
<<MEMORY/SET>> key input.
Adjustment result automatically will display as below for each 2 sec :
a) "FOF_XXXX"
b) "TOF_XXXX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
<<STOP>> key input.
STOP
explanation:
a) Focus off set = "FOF_XXXX"
b)Tracking off set = "TOF_XXXX"
c)Tracking balance = "TBAL_XX"
d)Tracking Gain = "TGAN_XX"
f) Focus Gain = "FGAN_XX"
g) RF level shift = "RFLS_XX"
VOL — Last memory
BAL — CENTER
P. G E Q — F L AT
X-BASS — OFF
To cancel : Power OFF
A

XL-MP150
2 – 5
[3] Standard Specification of Stereo System Error Message Display Contents
(*) CHECKING:
If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**'. 'ER-CD**' display will only be display when error had
been detected for the 5 th times.
Speaker abnormal detection and +B PROTECTION display
In case speaker abnormal detection or +B PROTECTION had occurred, the unit will automatically enter to stand-by mode and Timer indicator will
flashing as below.
Example:In case of speaker abnormal
BEFORE TRANSPORTING THE UNIT
The following process need to be taken after set tapering/parts replacement.
1. Press the POWER ON/STAND-BY button to enter stand-by mode.
2. While pressing down the button and the X-BASS/DEMO button, press the POWER ON/STAND-BY button. The Micro Computer version
number will be displayed as "CN******".
3. Press OPEN/CLOSE button until "WAIT"--> "FINISHED" appears.
4. Unplug the AC cord and the unit is ready for transporting.
Error Contents DISPLAY Notes
CD Pickup Mechanism Error. 'ER-CD01' PU-IN SW Detection NG.
CD Changer Mechanism Error. 'ER-CD**' (*) 10: CAM SW Detection NG during normal operation
11: CAM SW Detection NG during initialize process
20:TRAY SW Detection NG during normal operation
21:TRAY SW Detection NG during initialize process
CD DSP Communication Error. 'ER-CD31' DSP COMMUNICATION ERROR.
Focus Not Match/IL Time Over. 'NO DISC'
TUNER PLL Unlock.
FM MHz
PLL Unlock.
87.50
TIMER
LED OFF OFF OFF OFF
1 FRAME (REPEAT)
FLASHINGFLASHING
NO. 2 NO. 2
ON ON
NO. 1 : +B PROTECTION
NO. 2 : Speaker abnormal
NO. 1NO. 1

XL-MP150
3 – 1
AudioXL-MP150Service ManualXLMP150MarketE
CHAPTER 3. MECHANICAL DESCRIPTION
[1] REMOVING AND REINSTALLING THE
MAIN PARTS
1. TAPE MECHANISM SECTION
Perform steps 1 to 5, 11 of the disassembly method to remove the tape
mechanism.(see page 3-3,3-4)
1.1. How to remove the Record/Playback Head (See Fig. 1)
1. When you remove the screws (A1) x 2 pcs and (A2) x 1 pc., the
record/playback head can be removed.
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., in the direction of the
arrow <B>.
NOTE: When installing the pinch roller, pay attention to the spring
mounting position.
1.3. How to remove the Belt (See Fig. 3)
1. Remove the main belt (C1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (C2) x 1 pc.
1.4. How to remove the Motor (See Fig. 4)
1. Remove the screws (D1) x 2 pcs., to remove the motor.
Figure 1
Figure 2
Figure 3
Figure 4
(A1)x2
Ø2x6mm
(A2)x1
Ø2x9mm
Record/Playback
Head
Erase Head
Clutch Ass'y
Pinch Roller
(B1)x1 <A>
<B>
Pinch
Roller
Pawl
Pull
Main Belt
(C1)x1
FF/REW
Belt
(C2)x1
Motor
FF/REW
Clutch
Flywheel
(D1)x2
Ø2.6x5mm
Motor
Clutch Ass'y

XL-MP150
3 – 2
2. CD MECHANISM SECTION
Perform steps 1 to 3, 14 of the disassembly method to remove the CD
mechanism.(see page 3-3,3-4)
2.1. How to remove the Optical Pickup (See Fig. 1)
1. Remove the screws (A1) x 2 pcs and shaft (A2) x 1 pc.
2. Remove the stop washer (A3) x 1 pc and gear (A4) x 1 pc.
3. Remove the optical pickup.
NOTE: After pulling out the optical pickup connector, wrap the tip of it
with conductive aluminium foil or the like to protect the optical
pickup from the static electricity.
2.2. How to remove CD Disc (See Fig. 2~6)
1. When CD is at play position, rotate reduction gear C clock-wise as
shown in Figure 2 until disk tray is at ‘STOCK’ position, then rotate
the gear further to eject the disk tray (Figure 6) so that CD can be
removed from the tray.
2. In another case, if CD mechanism is at tray No. 1 play position and
to remove CD located in tray No. 3, the procedure is as follows:
If the gear up down board is located at tray No. 1 position, then
rotate Reduction gear C clock-wise until Disc tray is at ‘STOCK’
position. Rotate reduction gear D clock-wise (Figure 3) to move the
CD mechanism to tray No. 3 position. This is confirmed by check-
ing the gear up down board position base on the marking as indi-
cated on the main chassis as shown in Figure 4.
• Usually changer is covered with top plate. As for reference pur-
pose, we exclude the top plate for easy viewing. (Figure 5,6)
Figure 6
CD Disc
CD At 'PLAY' position.
Disc Tray
Guide Tray
CD Disc
CD At 'STOCK' position.
CD Disc
Tray eject
Remove CD from tray.
Figure 5
Figure 1
Figure 4
(A1) x2
ø2.6 x5mm
CD
Mechanism
Stop Washer
(A3) x1
Optical Pickup
Gear
(A4) x1
Shaft
(A2) x1
Reduction gear D
Figure 3
Up Down
Reduction gear C
Front
Figure 2
Rear
Mark 1
(DISC 1)
(DISC 2)
(DISC 3)
(DISC 4)
(DISC 5)
Gear up down board
Mark 3 Mark 5
Mark 2 Mark 4

XL-MP150
3 – 3
[2] DISASSEMBLY
Note 1:
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) x5 1
2 Side Panel (Left/
Right)
1. Screw.............................(B1) x8 1
3 CD Changer unit 1. Screw.............................(C1) x2
2. Hook...............................(C2) x2
3. Socket............................(C3) x1
4. Flat Cable.......................(C4) x1
2
4 Rear Panel 1. Screw.............................(D1) x9 2
5 Front Panel 1. Screw.............................(E1) x3
2. Flat Cable.......................(E2) x2
3. Socket............................(E3) x1
4. Hook...............................(E4) x2
2,3
3
6 Tuner PWB 1. Screw..............................(F1) x1
2. Socket............................(F2) x1
2
3
7 Main PWB 1. Screw.............................(G1) x2
2. Socket............................(G2) x4
2,4
4
8 Power PWB 1. Screw.............................(H1) x4 4
9 Terminal PWB 1. Screw..............................(J1) x1 4
10 Display PWB 1. Knob...............................(K1) x1
2. Screw............................(K2) x 8
3. Flat Cable......................(K3) x 1
5
11 Tape Mechanism 1. Screw.............................(L1) x 4 5
12 Jack PWB 1. Screw............................(M1) x 1 5
13 CD MP3 PWB
(Note 1)
1. Screw.............................(N1) x2
2. Flat Cable......................(N2) x 2
3. Socket............................(N3) x1
6
14 CD Mechanism 1. Screw.............................(P1) x4
2. Screw.............................(P2) x4
6
7
Figure 1
Figure 2
Figure 3
(A1) x2
ø3x12mm
(A1) x2
ø3x12mm
(B1) x2
ø3x8mm
(B1) x2
ø3x8mm
(B1) x2
ø3x8mm
(B1) x2
ø3x8mm
(A1) x1
ø3x12mm
Front Panel
Top Cabinet
Rear
Panel
Side Panel
(Left)
Side Panel
(Right)
(D1) x9
ø3x8mm
(F1) x1
ø3x8mm
(G1) x1
ø3x10mm
(E1) x1
ø3x10mm
(E2) x1
(C3) x1
(C4) x1
Front Panel
Rear Panel
Hook
(C2)x1
Hook
(C2)x1
Pull
Pull
CD Changer
Unit
Main PWB
Headphones
PWB
CD Servo PWB
(C1) x1
ø3x10mm
(C1) x1
ø3x10mm
(F2) x1
(E1) x2
ø3x10mm
Front Panel
Tuner PWB
Main PWB
Pull
(E2) x1
(E3) x1
Pull
Hook
(E4)x1
Hook
(E4)x1

XL-MP150
3 – 4
Figure 4
Figure 5
Figure 6
(G1) x1
ø3x8mm
(H1) x4
ø4x6mm
(J1) x1
ø3x8mm
(G2) x2
(G2) x2
Terminal PWB
Main PWB
Power PWB
(K2) x8
ø2.6x8mm
(L1) x4
ø3x10mm
(M1) x1
Special
(K3) x1
(K1) x1
Front Panel
Jack PWB
Cassette
Holder
Display PWB
Tape
Mechanism
(N1) x2
ø3x10mm
(N2) x2
(N3) x1
(P1) x2
ø3x10mm
(P1) x2
ø3x10mm
CD Changer
Unit
CD MP3 PWB
Figure 7
STEP REMOVAL PROCEDURE FIGURE
1Woofer/
Tweeter
1. Net Frame................(A1) x1
2. Front Panel...............(A2) x1
3. Socket .....................(A3) x1
4. Screw ......................(A4) x2
5. Screw.......................(A5) x6
8
Figure 8
(P2) x4
Special
CD Changer
Unit
CD Mechanism
Screwdriver
Net Frame
(A1)x1
(A5)x2
ø3x10mm
(A4)x2
ø3x10mm
(A3)x1
(A5)x4
ø4x16mm Woofer
Front Panel
(A2)x1
Tweeter
LED PWB

XL-MP150
4 – 1
AudioXL-MP150Service ManualXLMP150MarketE
CHAPTER 4. DIAGRAMS
[1] BLOCK DIAGRAM
+B5
+B5 +B5 +B10
+B8(SW_+5V)
+B7(A_+5V)
VIDEO/AUX
R
L
LIN RIN
R
L
Q108
REC/PLAY
CLK
CE
DI
L
R
BIAS
MUTING
AC BIAS
L
L
R
R
R
L
TAPE
TUNER
CD
PB
CNP3
FROM CD SECTION
HEAD
ERASE
SWITCHING
SWITCHING
SWITCHING
BIAS
Q113
Q114
Q112
SWITCHING
OSC
BIAS
Q105
Q106
REC /P.B. HEAD
TAPE R-CH
L-CH
AUDIO PROCESSOR
LC75341
R
L
REC
R
L
RREC
LREC
SWITCHING L(TA)
R(TA)
/PLAYBACK AMP.
PLAYBACK AND RECORD
AN7345K
Q107
+B5
-20dBATT
17
3
1
2
2
7
18
4
21
13
16
9
23
2
21
13
12
14
16
11
1
23 24
LOUT ROUT
21 22
19
20
17
13
12 16
4
9
10
15
3
24
12
15
11
718 8 23
7
5
+B4
H/N
P.B
REC
LD_+8V
CNS3
TO CD/MP3 SECTION
M_+8V
FM/AM OUT
R
L
FM/AM
MPXIN
MO/ST
VCO
FM
DET
FM+B
GND
AM IF
AM MIX
OUT
IXA043AW
NEW SOUND
NS_SW1
SW2
SW1
Q601
Q602
Q603
Q604
Q609
Q605
Q606
IC601
JK690
CNS3
Q104
Q101-
IC101
L103
Q111 Q110
Q109
IC602
FM+B
+B5
+B5
CLK
+B5
AM IF
OSC
BUFF
10.7 MHz
450 kHz
DO DI CE
MO/ST
SWITCHING
FM/AM
IC302
LC72131
PLL(TUNER)
STEREO
AM RF IN
AM OSC IN AM OSC OUT
FM
Q360
Q361
VT
OSC
X352
4.5 MHZ
AM BAND
COVERAGE
AM
TRACKING
FM RF
FM OSC
FM IF
T303 T306
L312 T301
X351
456 kHz
ZD351
5.1V
CF351
IC303
LA1832S
FM IF DET.
FM MPX./AM IF
CF352
T351
CF302T302
Q302
BF301
B.P.F
9
10
18
5413
21
7
98517
6
21
21
20 22 11
17
1615
13
14
12 20
15
162324
4
7
+B5
384
1
9
6
57
AM LOOP
ANTENNA
FM ANTENNA
TERMINAL
CNP301
SO302
IC301
TA7358AP
FM FRONT END
+B6
+B6
2
1
Figure 4-1 BLOCK DIAGRAM (1/6)

XL-MP150
4 – 2
0
+B10
+B3
POWER AMP
KIA7812AP
REGULATOR
VOLTAGE
VOLTAGE
VOLTAGE
KIA7810AP
REGULATOR
KIA7805AP
REGULATOR 2A 125V
2A 125V
4A 125V
4A 125V
D842-D845
POWER
TRANSFORMER
RELAY
DRIVER
AC_RLY
P_IN
+B7(A_5V)
+B8(SW_+5V)
+B_PROTECT
VL+
VL-
GND
SP_RLY
AC 120V,60 Hz
SUPPLY CORD
AC POWER
SP DET
-VF
TO DISPLAY SECTION
QS01
QS05
QS03 CNS02
CNS01
TRANSFORMER
POWER
REGULATOR
VOLTAGE
UNSW_5.6V KIA78L05
VOLTAGE
REGULATOR
DRIVER
4A 125V
R-OUT
L-OUT
STK412-410
POWER AMP.
L
R
VL-
VH-
VL+
VH+
VF1
VF2
M971
-20dBATT
+B3
FAN MOTOR
HEADPHONES
SUB WOOFER
OUT-PUT
SPEAKER TERMINAL
M
35
17
48
11
6
1
14
18
7
5
2
+B5
+B5
(SUB)
(MAIN)
T.F
A_+10V
L
D_+8V
C
TION
M_+8V
+B1
+B1
M_+13V
2
3
4
6
9
5
7
8
1
NS_SW1
NS_SW2
SW_5V
UNSW5.6
M_+13V
S_MUTE
REC/PLAY
SP_DET
-20dB
VF1
-VF
VF2
AC_RLYCON
P_IN
A_+10V
+B_PROTECT
+B_PROTECT
D_GND
SP_RLY
T_BIAS
CLK
DI
CE
DO
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
KIA4558F
TO SPEAKER
LIGHT UP
Q906
Q904
Q901
IC901
F802
IC854
Q841
Q801
IC855
F804
F803
IC851
IC852
IC853
D802
D801
F801
F805
PT801
JK953
JK701
SO901
RL914
Q905
RL841
RELAY
PT841
RELAY
CNP701B
IC503
Q850
Figure 4-2 BLOCK DIAGRAM (2/6)

XL-MP150
4 – 3
+10V
M_+13V
SYSTEM
MICROCOMPU
TAPE MECHANISM Ass'y
Q710
LED707
CNP701A
CNP702
Q702
Q712
Q701
Q714 Q715
Q713
FL701
IC701
IXA056AW
3738394041424344454647484950
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
81 82 83 84 85 86 87 88 89 90 91 92 93
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
8
7
6
5
4
3
2
1
9 10111213141516171819202122232425262728293031323334353637383940414243444546475051
T_SOL_B
SMUTE
T_FPSW
T_RUN_PULS
T_MOTOR
FPA
T1RUN
FPB
T_SOL
T_MOTOR
GND
T_SOL
F
T_SOL_B T_MOTOR T_SOL_A/VOLLED VSS RESET ILLU_LED VDD NS_SW2 NS_SW1 DIST
T_BIAS
T_REC/PLAY
-20dBATT
SP_RLY
AC_RLY
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19(DIST1)
S18(DIST2)
S17(DIST3)
S16(DIST4)
S15
S14
S13
S12
S11
S10
VDD2
VLOAD
S9
S8 S7 S6 S5 S4 S3 S2 S1
G12 G11 G10
G9 G8
F NP NP P30 P29 P28 P27 P26 P25 P24 P23 P22 P21 P20 P19 P18 P17 P16 P15 P14 P13 P12 P11 P10 P09 P08 P07 P06 P05 P04 P03 P02 P01 G12 G11 G10 G09 G08 G07 G06 G05 G04
7
1
4
5
2
3
6
NS_SW1
NS_SW2
CE
DO
CLK
DI
+B_PROTECT
D_GND
S_MUTE
REC/PLAY
T_BIAS
A+10V
M_+13V
SW_5V
SP_DET
SP_RLY
-20dB
VF2
VF2
-VF
-VF
P_IN
VF1
UNSW5.6 +B
+B
+B
+B
+B
+B
+B
+B
+B
+B
AC_RLY
FL DISPLAY
TO MAIN PWB
7
1
4
5
6
2
3
R. REC
F. REC
+MTR
-COM
M+
-
END SW
+SOL
N.C. (OP PACK)
SOLENOID
TAPE
MOTOR
Figure 4-3 BLOCK DIAGRAM (3/6)

XL-MP150
4 – 4
SYSTEM
MICROCOMPUTER
XL700
CNP704
Q719
IC701
LED701
VR701
VOLUME
SW722
SW728
RX701
Q703
~
SW701
SW705
SW706
SW707
~
SW711
SW718
~
SW719
SW721
~
8.388608 MHz
IXA056AW
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31323334353637383940414243
4
8
586 878889 909192 9394 95 96 97 9899 100
8
7
6
5
4
3
2
1
124589 1011121314151617
KEY2
KEY1
KEY0
MOT_A-
MOT_A+
CD_RESOUT
CD_RESOUT MOT_A+ MOT_A- CD_CLK CD_DI CD_DO
SMUTE
SMUTE
CD_CE
AVDD
KEY0
KEY1
KEY2
VOL_JOG
PROTECT
T_FPSW
TUN_SM/SPAN
T_RUN_PULS
DISCuCLAMESW
TRAY_SW1u2
CD_INTB
MP3_INTB
AVSS
VSS
XIN
XOUT
VDD
VPP
CD_CE
CD_DO(FLASHD0)
CD_DI(FLASHDI)
CD_CLK(FLASHCLK)
P_IN
PHOTO
SP_DET
REMOCON
CE
CLK
DI
DO
MOTA+ MOTA- TIMERLED T_SOL_B T_MOTOR T_SOL_A/VOLLED VSS RESET ILLU_LED VDD
NS
_
SW2 S4
S3 S2 S1
G12 G11 G10
G9 G8 G7 G6 G5 G4 G3 G2 G1
G12 G11 G10 G09 G08 G07 G06 G05 G04 G03 NX NX G02 G01 NP F
8
7
5
4
2
6
3
9
10
11
12
13
14
1
VF1
+B
B
+B
+B +B
+B
+B
+B
+B
+B
CD_RESOUT
CD_INTB
MP3_INTB
CD_DO
CD_DI
CD_CLK
CD_CE
MOT_A+
MOT_A-
DISC & CLAMP SW
TRAY SW1&2
PHOTO
GND
+5V
KEY
TO CD/MP3 PWB
REMOTE
SENSOR
2013TH2E1
Figure 4-4 BLOCK DIAGRAM (4/6)

XL-MP150
4 – 5
MP3 DECODE
R
PRO
C
FOCUS/TRACKING/
SPIN/SLED DRIVER
TP4
TP3
TP2
TP1
LA6261
LC
7
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29
80 79 78 77 76 75 74 73 72
8
7
6
5
4
3
2
1
789
10 11 12 13 14 15 16 17 18
123456
30 29 28 27 26 25 24 23 22 21 20 19
36 35 34 33 32 31
(MGND)
(MO_A-)
(DGND)
(DGND)
(DGND)
(MO_A+)
(MO_B+)
(MO_B-)
(LVDD) (SVDD) (AUVDD)
(MO_SPEED)
PVCC2
PGND2
SVCC
VREFIN
SGND
VO4- VO5-
VO6+
VO6-
VO3- VO2+ VO1+ VO2- VO1- PGND1 VIN1 REGOUT VIN1G VIN2 VIN3G VIN2G
VCONT6
REV6
VIN3
MUTE
PVCC1 VO3+ VIN4 VIN4G
VO4+ VO5+
FWD6
VCONT5
REV5
FWD5
REGIN
TR-
FO+
FO-
TR+
GND
C
F
B
A
E
VR
VCC
PD
VREF
LD
GND
VREF
FDO PDOUT1 SPDO
XOUT
SLCO
AVDD
RCHO
LRVSS
LRVDD
LCHO XVDD
XIN
PCKIST PDOUT0 VVSS1 SLDO TDO
AVDD
AVSS
JITTC
RFMON
LDS
LDD
TEIN
TE
TEC
FIN
EIN
FEC
DIN
BIN
CIN
AIN
PHLPF
LPF
RFOUT
EFMIN
+B
+B+B
+B
+B
+B
+B
+B
GND
TR-
TR+
TR+
FO+
FO+
FO-
PD
VR
LD
F
C
B
A
E
VCC
TR-
VREF
GND
PUIN
SL+
SL-
SP-
SP+
(AGND)
16.93
4
6
5
4
2
1
3
9
10
11
12
13
14
15
16
8
7
4
3
2
6
5
1
9
10
11
12
13
14
15
16
8
7
4
3
2
6
5
1
PICKUP UNIT(306)
SLED
MOTOR
SPINDLE
MOTOR
+
+
-
-
PICKUP-IN
M
M
6
5
2
4
1
3
DRIVER
LASER
CNP1
X
L
Q2
CNP2
IC2
CNP3A
SW1A
M1A
M2A
Q1
Figure 4-5 BLOCK DIAGRAM (5/6)