Panasonic SA-AKX18PH User manual

© Panasonic Corporation 2013. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
PSG1401007CE
CD Stereo System
Model No. SA-AKX18PH
SA-AKX18PN
Product Color: (K)...Black Type
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Use (For PH only)-------------------------------- 4
1.3. Before Repair and Adjustment------------------------- 4
1.4. Protection Circuitry---------------------------------------- 4
1.5. Power Supply using SMPS ----------------------------- 5
1.6. Safety Parts Information--------------------------------- 6
2 Warning-------------------------------------------------------------- 7
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices---------- 7
2.2. Precaution of Laser Diode------------------------------- 7
2.3. General description about Lead Free Solder
(PbF)---------------------------------------------------------- 8
2.4. Handling Precautions for Traverse Unit-------------- 8
2.5. Grounding for electrostatic breakdown
prevention----------------------------------------------------9
3 Service Navigation ---------------------------------------------10
3.1. Service Information--------------------------------------10
4 Specifications---------------------------------------------------- 11
5 Location of Controls and Components------------------12
5.1. Remote Control Key Button Operation -------------12
5.2. Main Unit Key Button Operation---------------------- 12
6 Service Mode-----------------------------------------------------13
6.1. Cold-Start -------------------------------------------------- 13
6.2. Sales Demonstration Lock Function ----------------13
6.3. Doctor Mode Table--------------------------------------- 14
6.4. Self-Diagnostic Mode ----------------------------------- 17
6.5. Self-Diagnostic Error Code Table--------------------17
7 Troubleshooting Guide --------------------------------------- 18
Please refer to the original service manual for:
CD Mechanism Unit (BRS12C) , Order No. PSG1303059AE
Speaker system SB-AKX18PN-K, Order No. PSG1401008CE

2
7.1. No Power or No Display--------------------------------18
7.2. Bluetooth® Pairing Failure-----------------------------18
7.3. No Key Function------------------------------------------18
7.4. No Remote Control Function--------------------------18
7.5. USB Device Cannot DetectPress--------------------19
7.6. No Output Sound-----------------------------------------19
7.7. Check Point------------------------------------------------20
8 Disassembly and Assembly Instructions---------------21
8.1. Type of Screws -------------------------------------------21
8.2. Disassembly Flow Chart--------------------------------21
8.3. Main Components and P.C.B. Locations-----------22
8.4. Disassembly of Top Cabinet---------------------------23
8.5. Disassembly of Front Panel Unit-----------------23
8.6. Disassembly of Panel P.C.B. and LCD P.C.B.----24
8.7. Disassembly of USB P.C.B. ---------------------------25
8.8. Disassembly of Rear Panel.---------------------------25
8.9. Disassembly of Main P.C.B.---------------------------26
8.10. Disassembly of SMPS Module and Voltage
Selector P.C.B.--------------------------------------------27
8.11. Disassembly of CD Mechanism Unit-----------27
8.12. Disassembly of CD Interface P.C.B.-----------------28
9 Service Position-------------------------------------------------29
9.1. Checking of Panel P.C.B. and LCD P.C.B.---------29
9.2. Checking and Repairing of Main P.C.B. and
SMPS P.C.B. ----------------------------------------------29
10 Block Diagram ---------------------------------------------------31
10.1. System Control -------------------------------------------31
10.2. Audio --------------------------------------------------------33
10.3. Power Supply ---------------------------------------------34
11 Wiring Connection Diagram---------------------------------35
12 Schematic Diagram---------------------------------------------37
12.1. Schematic Diagram Notes-----------------------------37
12.2. MAIN (Damp/Tuner/AUX/USB/DSP/
Bluetooth/Voltage Regulators/Micon) Circuit------39
12.3. Panel Circuit-----------------------------------------------47
12.4. LCD, USB & CD Interface Circuit --------------------48
13 Printed Circuit Board ------------------------------------------49
13.1. Main P.C.B. & CD Interface P.C.B.-------------------49
13.2. Panel, LCD & USB P.C.B.------------------------------51
14 Appendix Information of Schematic Diagram---------53
14.1. Voltage Chart----------------------------------------------53
15 Exploded View and Replacement Parts List-----------57
15.1. Exploded View and Mechanical Replacement
Part List-----------------------------------------------------57
15.2. Electrical Replacement Parts List--------------------63

3
1 Safety Precautions
1.1. General Guidelines
1. IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by in the
Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts
should be replaced with manufacturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify
the original design without permission of manufacturer.
2. An Isolation Transformer should always be used during the servicing of AC Adaptor whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal
injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental shorting that may occur during
servicing.
3. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
4. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
5. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1Mand 5.2M.
When the exposed metal does not have a return path to the chassis, the reading must be
1.1.2. Leakage Current Hot Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5k, 10 watts resistor, in parallel with a 0.15F capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1-1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent)
may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the
limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is
returned to the customer.
Figure 1-1

4
1.2. Before Use (For PH only)
Be sure to disconnect the mains cord before adjusting the voltage selector as shown in Figure 1-2.
Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be
used.
Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries,
the correct voltage is already set.)
Figure 1-2
1.3. Before Repair and Adjustment
Caution:
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac to avoid overcurrent.
Current consumption at AC 110~127 V / 220~240 V, 50/60 Hz in Power ON, FM Tuner at volume minimal mode should be ~ 250
mA (PH).
Current consumption at AC 120 V, 60 Hz in Power ON, FM Tuner at volume minimal mode should be ~ 250 mA (PN).
1.4. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

5
1.5. Power Supply using SMPS
This model uses Switching Mode Power Supply (SMPS) to provide the power supply to the unit. Here is the supplied part no. for the
SMPS Module
1) N0AB2GK00001 (For PN)
2) N0AD2GK00001 (For PH)
Disconnect AC power to discharge the AC Capacitors (C1 (PH), C2) through a 10 , 10 W resistor to ground.
1.5.1. For PN
1.5.2. For PH

6
1.6. Safety Parts Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these
critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the
original design without permission of manufacturer.
Safety Ref No. Part No. Part Name & Description Remarks
13 RGR0443M-A1A REAR APNEL PN
13 RGR0443N-A2A REAR PANEL PH
26 RKM07132-K1 TOP CABINET
301 RAE1044Z-V TRAVERSE UNIT
A2 K2CB2CB00022 AC CORD PN
A2 K2CQ2YY00119 AC CORD PH
A3 RQT9894-M O/I BOOK(En/Sp)
PCB6 N0AB2GK00001 SMPS MODULE PN
PCB6 N0AD2GK00001 SMPS MODULE PH

7
2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices.
The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge
(ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alumi-
num foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara-
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
CAUTION:
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf-
ficient to damage an ES device).
2.2. Precaution of Laser Diode
Caution:
This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens.
Wavelength: 790 nm (CD)
Maximum output radiation power from pickup: 100 W/VDE
Laser radiation from the pickup unit is safety level, but be sure the followings:
1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to look at pickup lens for a long time.

8
2.3. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
Service caution for repair work using Lead Free Solder (PbF)
• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the
lead free solder.
• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees
C (662±86F).
Recommended Lead Free Solder (Service Parts Route.)
• The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
2.4. Handling Precautions for Traverse Unit
The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be
taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.
2.4.1. Cautions to Be Taken in Handling the Optical Pickup Unit
The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.
Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.
1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.
2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed
should be short-circuited with a short pin or a clip.
3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.
4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

9
ble cable, cut off the antistatic FPC.
2.5. Grounding for electrostatic breakdown prevention
• As for parts that use optical pick-up (laser diode), the optical pick-up is destroyed by the static electricity of the working environ-
ment.
Repair in the working environment that is grounded.
2.5.1. Worktable grounding
• Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed and ground the sheet.
2.5.2. Human body grounding
• Use the anti-static wrist strap to discharge the static electricity form your body Figure 2-3.
Figure 2-3

10
3 Service Navigation
3.1. Service Information
This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
3.1.1. Firmware Update Procedure
Start
Write encrypted UPD bin to CD-R
Turn On main set
Insert CD-R (with UPD bin) and
close
TOC reading
Writing starts:
"0%" -> "20%" -> "40%" ->
"60%" -> "80%" -> 100%"
"CHECKING"
"GOOD" display 3 sec
Set auto turn Off -> Cold Start
End
OK
NG "NO PLAY"
process end

11
4 Specifications
Amplifier section
RMS output power stereo mode
Front Ch (both ch driven) 175 W per channel (4 ),
1 kHz, 30% THD
Total RMS stereo mode power 350 W
Tuner, terminals section
Preset memory FM 30 stations
AM 15 stations
Frequency modulation (FM)
Frequency range 87.50 MHz to 108.00 MHz
(50 kHz step) (for PH)
87.5 MHz to 108.0 MHz
(100 kHz step) (for PN)
87.9 MHz to 107.9 MHz
(200 kHz step) (for PN)
Antenna terminals 75 (unbalanced)
Amplitude modulation (AM)
Frequency range 522 kHz to 1629 kHz
(9 kHz step) (for PH)
520 kHz to 1630 kHz
(10 kHz step) (for PH)
520 kHz to 1710 kHz
(10 kHz step) (for PN)
Aux Input Pin jack
Disc section
Discs played (8 cm or 12 cm) CD, CD-R/RW(CD-DA, MP3*)
Pick up
Wavelength 790 nm(CD)
Bluetooth section
Version Bluetooth®Ver.2.1 +EDR
Output Class 2
Supported profile A2DP, AVRCP, SPP
Operating frequency 2402 MHz to 2480 MHz
Operating distance 10 m line of sight
USB section
USB Port
USB standard USB 2.0 full speed
Media file format support MP3 (*.mp3)
USB device file system FAT12, FAT16, FAT32
USB port power 500 mA (max)
USB recording
Bit rate 128 kbps
USB recording speed 1x, 3x (CD only)
Recording file format MP3 (*.mp3)
General
Power supply AC 110 to 127/220 to 240 V,
50/60 Hz (for PH)
AC 120 V, 60 Hz (for PN)
Power consumption 50 W
Dimensions (W x H x D) 230 mm x 335 mm x 243 mm
Mass 2.7 kg
Operating temperature range 0 C to +40 C
Operating humidity range 35% to 80% RH
(no condensation)
Power Consumption in
standby mode 0.5 W (approximate) (for PH)
0.4 W (approximate) (for PN)
Power Consumption in
standby mode (With
"STANDBY BLUETOOTH" set
to "ON")
0.6 W (approximate)
(for PH)
0.5 W (approximate) (for PN)
1. Specifications are subject to change without notice.
Mass and dimension are appropriate
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
System: SC-AKX18PN-K Main Unit: SA-AKX18PN-K
Front Speakers: SB-AKX18PN-K
System: SC-AKX18PH-K Main Unit: SA-AKX18PH-K
Front Speakers: SB-AKX18PN-K

12
5 Location of Controls and Components
5.1. Remote Control Key Button Operation
5.2. Main Unit Key Button Operation

13
6 Service Mode
6.1. Cold-Start
Here is the procedure to carry out cold-start or initialize to shipping mode.
1. Unplug AC power cord
2. Press & hold [POWER] button
3. Plug AC power cord while [POWER] button being pressed
FL Display will show “_ _ _ _ _ _ _ _”
4. Release [POWER] button
6.2. Sales Demonstration Lock Function
6.2.1. Entering into Sales demonstration lock mode
Here is the procedures to enter into the Sales demonstration lock mode.
Step 1: Turn on the unit.
Step 2: Select to any mode function.
Step 3: Press and hold [ OPEN/CLOSE] and [CD] keys for 5 sec or more.
The display will show upon entering into this mode for 2 sec..
Note: [ OPEN/CLOSE] button is invalid and the main unit displays “LOCKED” while the lock function mode is entered.
6.2.2. Cancellation of Sales demonstration lock mode
Step 1: Turn on the unit.
Step 2: Select to any mode function.
Step 3: Set volume to Vol 19.
Step 4: Press and hold [ OPEN/CLOSE] and [CD] keys for 5 sec or more.
The display will show upon entering into this mode for 2 sec..

14
6.3. Doctor Mode Table
6.3.1. Doctor Mode Table 1
FL Display Key Operation
Front Key
Item
DescriptionMode Name
Doctor Mode
EEPROM
checksum
check
To enter into Doctor Mode In CD Mode:
1. Press [ ] button on
main unit follow by [4]
and [7] on remote control.
In CD mode:
1. Enter into Doctor Mode
2. To exit, press [DELETE]
button on remote control or,
press [POWER, /I] button on
Main Unit
Displaying of
1. Year Develop.
2. Model Type.
3. ROM Type.
4. Firmware Version.
(Display 1)
(Display 2)
Checksum (Hex)
Cold Start To active cold start upon next AC
power up when reset start is
execute the next time.
In Doctor Mode:
1. Press [SLEEP] button on
the remote control.
Version No. (001 ~ 999) specific for each
firmware
(Decimal)1 2 3 4

15
6.3.2. Doctor Mode Table 2
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Volume Setting
Check
FL Display Check
To check the volume setting of the
main unit.
To check the FL segment display.
All segments will light up while all LED
blink at 0.5s intervals.
In Doctor Mode:
1. Press [7], [8], [9] button on
the remote control.
In Doctor mode:
1. Press [1] button on the
remote control.
2. To cancel this mode, press
[0] button on the remote control.
Press [7]: VOL50
Press [8]: VOL35
Press [9]: VOL0
Volume
In this mode, the tray will open & close
automatically.
Cancellation Display
Loading Test To determine the open & close
operation of the CD Mechanism Unit.
The counter will
increment by one.
When reach 99999999
will change to 00000000
Cancellation Display
Traverse Test To determine the traverse unit
operation for inner & outer access track.
The counter will
increment by one.
When reach 99999999
will change to 00000000
The counter will
increment by one.
When reach 99999999
will change to 00000000
Cancellation Display
Reliability Test
(Combination)
In this mode, ensure the CD is in the
main unit.
To determine the traverse unit
operation & open/close operation of the
mechanism.
In this mode, ensure the CD is in the
main unit.
In Doctor Mode:
1. Press [10] [2] [1] button
on the remote control.
In Doctor Mode:
2. To cancel this mode, press
[0] button on the remote control.
1. Press [10] [1] [2] button
on the remote control.
In Doctor Mode:
1. Press [10] [1] [5] button
on the remote control.
2. To cancel this mode, press
[0] button on the remote control.
2. To cancel this mode, press
[0] button on the remote control.

16
6.3.3. Doctor Mode Table 3
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
CD
Self- Adjustment
Test
To display result of
self-adjustment for CD.
CD LSI Version
Check
For checking CD LSI Version and
checksum information.
In Doctor Mode
:
1. Press [10] [1] [4] button
on the remote control.
In Doctor Mode:
1. Press [4] button on the
remote control.
Display of auto adjustment
result
Reference table:
ERROR Code
Status
Condition
0 1 2 4 6 8 A C E F
AOC1/AOC2 O O O O O O O O -
ABC2/ABC1 O - X O X O X O X -
2
nd
AOC1 O - O X X O O X X -
FAGC/TAGC O - O O O X X X X -
AGC2 O - O O O O O O O
O : OK;
X : NG (In case that time out happens.)
: Either one of FO AOC, TR AOC and FO
coarse AGC is NG.
: If the AGC is NG (ignore others).
To cancel this mode, press [0]
button on the remote control.
To cancel this mode, press [0]
button on the remote control.
(Display 1)
(Display 2)
Version (Decimal)
ROM
Type
Year Develop after
2 sec
Checksum (Hex)

17
6.4. Self-Diagnostic Mode
6.5. Self-Diagnostic Error Code Table
Self-Diagnostic Function provides information on any problems occurring for the unit and its respective components by displaying
the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is cleared.
The error code is automatically display after entering into self-diagnostic mode.
6.5.1. Power Supply Error Code Table
6.5.2. CD Mechanism Error Code Table
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Self Diagnostic
Mode
To enter into self diagnostic checking Step 1: Select CD mode
(Ensure no disc is inserted).
To exit, press [8] on main unit or
remote control.
Step 2: Press & hold [g] button
follow by [y/i] on
main unit for 2 seconds.
Error Code
Information
System will perform a check on
any unusual/error code from the
memory
Example: Step 1: In self diagnostic mode,
Press [g] on main unit.
To exit, press [8] on main unit or
remote control.
Delete error code To clear the stored in memory
(EEPROM IC)
Step 1: In self diagnostic mode,
Press [0] on remote control.
Error Code Diagnostic Contents Description of error Automatic FL Display Remarks
CD H15 CD Open Abnormal During operation
POS_SW_R On fail to be
detected with 4 sec. Error
No. shall be clear by force
or during cold start.
Press [ ] on main unit for
next error.
CD H16 CD Closing Abnormal During operation
POS_SW_CEN On fail to
be detected with 4 sec.
Error No. shall be clear by
force or during cold start.
Press [ ] on main unit for
next error.
F26 Communication between
CD servo LSI and micro-p
abnormal.
During switch to CD func-
tion, if SENSE = “L” within
failsafe time of 20ms.
Press [ ] on main unit for
next error.

18
7 Troubleshooting Guide
7.1. No Power or No Display
7.2. Bluetooth®Pairing Failure
7.3. No Key Function
7.4. No Remote Control Function
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
No Display on
FL Panel
Caution:
1. AC Cord Plug-out
2. Check Fuse(F1) = 0 ohm
[ refer to check point - ]
Change SMPS Module
Check Primary E-Cap (C2)
Measured 300V or more
[refer to check point - ]
11 2 2
Change SMPS module
Check Secondary Cap. (C17)
or Secondary Rect. Diode (D11)
Measured 14V or 33V
[refer to check point - ]
3 3
Change SMPS Module
Check DC-DC Regulator
IC (IC1003) Measured
6V at C1008/C1009
[refer to check point ]
4
Change IC1003
Check Regulator IC
(IC1005)
Measured 3.3V at Pin 2
[refer to check point ]
5
Change IC1005
Check Connector (CN2500)
Measured 5/3.3/12/V
at Pin 1-3
[refer to check point ]
7
Check Main PCB
Check Regulator IC
(IC1004)
Measured 1.6V at Pin 3
[refer to check point ]
6
Change IC1004
If No Display on
FL Panel
Check FL PCB
OK
NG
OK
OKOK OK OK OK
NG NGNG
NG
NG
NG
NG
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
Press [ PAIRING] on the Set
or Remote Control
Display " BLUETOOTH"
Check Main PCB
NG
"PAIRING' will display and
blinking while handphone or other
devices are Connecting to the Set
Do the Cold Start
AC Plug-out. Press and Hold
Power Button then
AC Plug-IN, wait to display "-------"
then will OFF the Set, back to start.
NG
Check Main PCB
NG
option 1
option 2
The set will displayed the
"READY" followed
by "BLUETOOTH"
No Problem
Found
OK OK OK
Press the Power Button
or CD Door Open of Unit
to Turn ON the Unit
If Cannot
Power ON
(No Display)
Check Main PCB
OK
NG
Use Remote Control
to Turn ON the Set
FL Display
Show "HELLO"
OK
Press the Power Buttons
or Other Buttons
Check and Ensure that
Panel Connector is
Properly Insert
NG
OK
All Buttons
are Working
If Buttons are not Working
Check Panel PCB
NG
OK
No Problem Found
Press the Remote Control
Power Button
to Power ON the Unit
(Ensure have Battery & New)
If Cannot
Power ON
(No Display)
OK
NG
Press the Power Button
of the Unit
to Turn ON the Set
FL Display
Show "HELLO"
OK
Press Remote
Control Buttons
Change FL PCB
NG
OK
All Remote Control
Buttons are Working
Change IC1005
NG
OK
No Problem Found
Check Regulator IC
(IC1005)
Measured 3.3V at Pin # 2
[refer to check point ]
4

19
7.5. USB Device Cannot DetectPress
7.6. No Output Sound
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
Check Main PCB
NG
Plug-in USB Device to USB port
with Red LED indicated
(e.g. USB B) FL Display " USB B"
NG
Check Main PCB
NG
Press Play
FL Display
"Music Name or Title"
No Problem
Found
OK OK OK
Press [ USB/CD] on the Set or
Remote Control to
Select USB A or B, Display
" USB A/B" and "NO DEVICE"
USBB_5V at CN2503 pin #7
(USBA_5V at pin # 6)
[refer to check point ]
8
CD Play
CD Play
USB PlayUSB Play
Bluetooth PlayBluetooth Play
Tuner ModeTuner Mode
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Check Main PCB
NG
Press Play
FL Display " Track & Count"
NG
Output Sound No Problem
Found
OK OK
CD Mode
OK
Check CD Mechanism
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Check Main PCB
NG
Insert USB Thumdrive
FL Display " USB A/B"
Press "Play"
NG
Output Sound No Problem
Found
OK
USB Mode
OK OK
Change USB Device
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Check Main PCB
NG
Press Play
FL Display " BLUETOOTH "
NG
Output Sound No Problem
Found
OK
Bluetooth Mode
OK OK
Re-connect Bluetooth
into the Device
Press Power Button
of Unit or Remote Control
to Turn ON the Unit
Check Main PCB
NG
Search for Tuner Signal
NG
Output Sound No Problem
Found
OK
FM/AM Mode
OK OK
Check the Antenna
Wire Connection

20
7.7. Check Point
SMPS Module
SMPS Module
Fuse (F1)
(0 ohm)
2
2
Pri. Cap (C2)
(300V or more)
33
Sec. Cap. C17
1
1
(13V or 33V)
Main PCBMain PCB
4
5
C1008/C1009
(6V)
IC1005_Pin 2
3.3V
6IC1004_Pin 3
1.6V
7
CN2500_Pin 1- 3
5V/3.3V/12V
8
CN2503
Pin #6 (USB-A)
/Pin #7 (USB-B)
5V