Panasonic SC-UA3E User manual

© Panasonic Corporation 2017. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
PSG1705009CE
CD Stereo System
Model No. SC-UA3E
SC-UA3GN
SC-UA3PR
SC-UA3PU
Product Color: (K)...Black Type
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment------------------------- 4
1.3. Protection Circuitry---------------------------------------- 4
1.4. Caution For AC Cord (For E/GN)---------------------- 5
1.5. 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---------------------- 13
6 Service Mode-----------------------------------------------------14
6.1. Cold-Start -------------------------------------------------- 14
6.2. Sales Demonstration Lock Function ----------------14
6.3. Doctor Mode Table--------------------------------------- 15
6.4. Self-Diagnostic Mode -----------------------------------17
6.5. Self-Diagnostic Error Code Table-------------------- 17
7 Troubleshooting Guide --------------------------------------- 19
7.1. No Power or No Display--------------------------------19
7.2. Bluetooth® Pairing Failure-----------------------------19
7.3. No Key Function------------------------------------------19
7.4. No Remote Control Function--------------------------20
7.5. USB Device Cannot Detect----------------------------20
7.6. No Output Sound-----------------------------------------20
7.7. Check Point------------------------------------------------21
8 Disassembly and Assembly Instructions---------------22
8.1. Types of Screws------------------------------------------ 22
8.2. Disassembly Flow Chart -------------------------------23
Please refer to the original service manual for:
OCD Mechanism Unit (BRS12C), Order No. PSG1303059AE

2
8.3. Main Components and P.C.B. Locations-----------23
8.4. Disassembly of Front Panel Unit---------------------24
8.5. Disassembly of Panel P.C.B.--------------------------25
8.6. Disassembly of USB P.C.B. ---------------------------25
8.7. Disassembly of Front Speakers (SP5 and
SP6) ---------------------------------------------------------25
8.8. Disassembly of Front Speakers (SP3 and
SP4) ---------------------------------------------------------26
8.9. Disassembly of Front Speakers (SP1 and
SP2) ---------------------------------------------------------26
8.10. Disassembly of LED P.C.B.----------------------------26
8.11. Disassembly of Mic P.C.B. (For E/PR/PU)---------27
8.12. Disassembly of Main P.C.B.---------------------------27
8.13. Disassembly of SMPS Module -----------------------28
8.14. Disassembly of CD Mechanism Unit----------------29
8.15. Disassembly of CD Interface P.C.B.-----------------31
9 Service Position-------------------------------------------------32
9.1. Checking of Main P.C.B. and SMPS Module------32
10 Block Diagram ---------------------------------------------------33
10.1. System Control -------------------------------------------33
10.2. Audio (1/2) -------------------------------------------------34
10.3. Audio (2/2) -------------------------------------------------35
10.4. Power Supply ---------------------------------------------36
11 Wiring Connection Diagram---------------------------------37
12 Schematic Diagram---------------------------------------------39
12.1. Schematic Diagram Notes-----------------------------39
12.2. Main (Micon) Circuit (1/2) ------------------------------41
12.3. Main (Micon) Circuit (2/2) ------------------------------42
12.4. Main (Connector), Main (Bluetooth) and Main
(Fan LED) Circuit-----------------------------------------43
12.5. Main (FE) Circuit -----------------------------------------44
12.6. Main (DAMP) Circuit-------------------------------------45
12.7. Main (DSP) Circuit---------------------------------------46
12.8. Main (OPT_SRC) Circuit-------------------------------47
12.9. Main (Tuner AUX) and Main (USB) Circuit --------48
12.10. Main (Voltage Regulator) Circuit ---------------------49
12.11. Panel Circuit-----------------------------------------------50
12.12. Mic (For E/PR/PU), USB, LED, CD Interface
Circuit -------------------------------------------------------51
13 Printed Circuit Board ------------------------------------------52
13.1. Main P.C.B. (Side A)-------------------------------------52
13.2. Main P.C.B. (Side B)-------------------------------------53
13.3. Panel, Mic (For E/PR/PU) and USB P.C.B.--------54
13.4. LED and CD Interface P.C.B. -------------------------55
14 Voltage and Waveform Measurement --------------------57
14.1. Voltage Measurement-----------------------------------57
15 Exploded View and Replacement Parts List-----------61
15.1. Cabinet Parts Location 1-------------------------------61
15.2. Cabinet Parts Location 2-------------------------------62
15.3. Packaging--------------------------------------------------63
15.4. Mechanical Replacement Part List ------------------65
15.5. Electrical Replacement Parts List--------------------67

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 1MΩand 5.2MΩ.
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 1.5kΩ, 10 watts resistor, in parallel with a 0.15μF 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 Repair and Adjustment
Disconnect AC power to discharge AC capacitor (in SMPS Module) as indicate below diagram through a 10 Ω, 10 W resistor to
ground.
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 220~240 V, 50 Hz in Power ON, FM Tuner at volume minimal mode should be ~ 150 mA (for E/GN).
Current consumption at AC 110~240 V, 50/60 Hz in Power ON, FM Tuner at volume minimal mode should be ~ 150 mA (for PU).
Current consumption at AC 220~240 V, 50/60 Hz in Power ON, FM Tuner at volume minimal mode should be ~ 150 mA (for PR).
1.3. 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
1.4. Caution For AC Cord (For E/GN)
Figure 1-3

6
1.5. 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
8 RFKHSCUA3PUK REAR CABINET ASS'Y UA3PU-K
17 TBMK4906 NAMEPLATE UA3E-K
17 TBMK4904 NAMEPLATE UA3GN-K
17 TBMK4902 NAMEPLATE UA3PR-K
301 TXQ0011 TRAVERSE ASS'Y (E.S.D)
A2 K2CT2YY00089 AC CORD UA3E-K
A2 K2CQ2YY00107 AC CORD UA3E-K,UA3PU-K
A2 K2CJ2YY00084 AC CORD UA3GN-K
A2 K2CA2YY00039 AC CORD UA3PR-K
A3 TQBJ2015 OI (En/Sw/Da/Fi) UA3E-K
A3 TQBJ2016 OI (Ge/Fr/It/Du) UA3E-K
A3 TQBJ2017 OI (Sp/Po/Cz) UA3E-K
A3 TQBJ2013 OI (En) UA3GN-K
A3 TQBJ2011 OI (Sp) UA3PR-K,UA3PU-K
A3 TQBJ2010 OI (En) UA3PU-K
PCB7 N0AE1GN00001 SMPS MODULE UA3E-K,UA3GN-K
PCB7 N0AE1GN00003 SMPS MODULE UA3PR-K,UA3PU-K

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 μW/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
Figure 2-1
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.
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

9
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 FFC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-
ble cable, cut off the antistatic FFC.
Figure 2-2
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. Software Update
Panasonic may release updated software for this system that may add or improve the way a feature operates.
For more details, refer to the following website.
http://panasonic.jp/support/global/cs/

11
4 Specifications
QAmplifier section
RMS output power stereo mode
Front Ch (both ch driven) 150 W per channel (4 Ω),
1 kHz, 30% THD
Total RMS stereo mode power 300 W
PMPO output power (For PR/PU ) 3300 W
QTuner section
Frequency modulation (FM)
Preset memory FM 30 stations
Frequency range 87.50 MHz to 108.00 MHz
(50 kHz step)
Antenna terminals 75 Ω(unbalanced)
QDisc section
Discs played (8 cm or 12 cm) CD, CD-R/RW (CD-DA, MP3*)
* MPEG-1 Layer 3
Pick up
Wavelength 790 nm (CD)
QTerminal section
USB Port
USB standard USB 2.0 full speed
Media file format support MP3 (*.mp3)
USB device file system FAT12, FAT16, FAT32
USB recording (for PR/PU)
Bit rate 128 kbps
USB recording speed 1x, 3x (CD only)
Recording file format MP3 (*.mp3)
Digital audio input
Optical digital input Optical terminal
Sampling frequency 32 kHz, 44.1 kHz, 48 kHz, 96
kHz
Analog audio input
Audio input Pin jack (1 system)
Microphone (For E/PR/PU)
Terminal Mono, 6.3 mm jack (2 systems)
QBluetooth®section
Version Bluetooth®Ver.2.1 + EDR
Class Class 2
Supported profiles A2DP, AVRCP, SPP (E/GN)
A2DP, AVRCP, SPP, FTP (PU/
PR)
Operating frequency 2402 MHz to 2480 MHz (for E)
2.4 GHz band, FH-SS (for GN/
PU/PR)
Maximum power (dBm e.i.r.p.) (for
E) 6 dBm
Operating distance 10 m line of sight
QGeneral
Power supply AC 220 to 240 V, 50 Hz (for E/
GN/PR)
AC 110 V to 240 V, 50/60 Hz
(for PU)
Power consumption 51 W
For Mexico
Power consumption per
day 51 Wh per day (51 W, 1 hour)
Power consumption per
day (in standby mode) 11.5 Wh per day (0.5 W, 23 hours)
Dimensions (W x H x D) 650 mm x 196 mm x 274 mm
Mass 6.1 kg (for E/GN)
6.0 kg (for PR/PU)
Operating temperature range 0 °C to +40 °C
Operating humidity range 35% to 80% RH
(no condensation)
Power Consumption in standby
mode (approximate) 0.5 W
Power Consumption in standby
mode (approximate)
(With "BLUETOOTH STANDBY" set
to "ON")
0.6 W
Note:
1. Specifications are subject to change without notice.
Mass and dimension are appropriate
2. Total harmonic distortion is measured by the digital spectrum
analyzer.

12
5 Location of Controls and Components
5.1. Remote Control Key Button Operation
(For E/GN)
(For PR/PU)
(For E/GN) (For PR/PU)

13
5.2. Main Unit Key Button Operation

14
6 Service Mode
Remote control with numeric button (Example: N2QAYB001019 (AKX220))
6.1. Cold-Start
6.2. Sales Demonstration Lock Function
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Cold Start To carry out cold-start or initialize
to shipping mode
:edoMDCnI
1. Press & hold [ ] button
follow by [JUKEBOX] on main
unit for more than 2 seconds.
2. Press [SETUP] button on
remote control.
Ļ
Entering into
Sales
Demonstration
Lock Mode
To enter into the sales
demonstration lock mode.
1. Turn on the unit.
2. Select to any mode
function.
3. Press and hold
[ OPEN/CLOSE] and
[USB/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 "LOCK" while
the lock function mode is
entered.
Cancellation of
Sales
Demonstration
Lock Mode
To cancel the sales
demonstration lock mode.
1. Turn on the unit.
2. Select to CD mode function.
3. Set volume to Vol 19.
4. Press and hold
[ OPEN/CLOSE] and
[USB/CD] keys for 5 sec or
more.
The display will show upon
entering into this mode for
2 sec.
FL Display
Key Operation
Front Key
Item
DescriptionMode Name

15
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
:edoMDCnIedoMrotcoDotniretneoT
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 [SLEEP]
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)
Cold Start To active cold start upon next AC
power up when reset start is
execute the next time.
In Doctor Mode:
1. Press [4] button on the
remote control.
(Decimal)
1 2 3 4
Version No. (001 ~ 999) specific for each
firmware

16
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.
2. To cancel this mode, press
[0] button on the remote
control.
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.

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
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Self Diagnostic
Mode
edomDCtceleS:1petSgnikcehccitsongaidflesotniretneoT
(Ensure no disc is inserted).
To exit, press [ /I] on main unit or
remote control.
Step 2: Press & hold [ ] button
follow by [JUKEBOX] on
main unit for 2 seconds.
Error Code
Information
System will perform a check on
any unusual/error code from the
memory
,edomcitsongaidflesnI:1petS:elpmaxE
Press [ ] on main unit.
To exit, press [
remote control.
Delete error code To clear the stored in memory
(EEPROM IC)
Step 1: In self diagnostic mode,
Press [0] on remote control.
/I] on main unit or
Solution
(PCB exchange repair)
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Error Code F61 Diagnosis Contents:
Power Amp IC output
abnormal.
Upon power on,
PCONT=HIGH,
DC_DET_AMP after
checking LSI.
Error Code F76 Diagnosis Contents:
Power Amp IC output
abnormal.
DC_DET_PWR.
Error Code
F61-76
Diagnosis Contents:
Power Amp IC output
abnormal.
Both DCDET (NG).
Press [ ] on main unit
for next error.
Press [ ] on main unit
for next error.
Press [ ] on main unit
for next error.
Check main (IC6000).
Check SMPS Module
(Main Q1011 / IC1000).
DAMP and power
supply abnormal.

18
6.5.2. CD Mechanism Error Code Table
6.5.3. Bluetooth Error Code Table
Solution
(PCB exchange repair)
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Error Code
CD H15
Diagnosis Contents:
CD Open Abnormal
.
During operation
POS_SW_R On fail to be
detected within 4 sec.
Error No. shall be clear
by force or during cold start.
Error Code
CD H16
Diagnosis Contents:
CD Closing Abnormal
.
During operation
POS_SW_CEN
On fail to be
detected within
Error No. shall be clear by
force
Press [ ] on main unit
for next error.
Press [ ] on main unit
for next error.
4 sec.
Check following:
1. CD Interface P.C.B.
(Pin 3, 4, 6)
2. SOC IC (IC2001)
Check following:
1. CD Interface P.C.B.
(Pin 6, 3, 4)
2. SOC IC (IC2001)
Solution
(PCB exchange repair)
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Error Code
F703
Diagnosis Contents:
Bluetooth Communication.
Communication between
Bluetooth module and
micro-p abnormal.
Error Code F77 Diagnosis Contents:
Bluetooth Address Error
If there is no valid Bluetooth
address stored in the
EEPROM IC.
Press [ ] on main unit
for next error.
Press [ ] on main unit
for next error.
Check following:
1. Bluetooth P.C.B.
2. SOC IC on Main
P.C.B.
Check following:
1. EEPROM IC
(IC2002) on Main
P.C.B.

19
7 Troubleshooting Guide
7.1. No Power or No Display
7.2. Bluetooth®Pairing Failure
7.3. No Key Function
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
No Display on
FL Display
(DP6801)
1. AC Cord Plug-out
2. Check Fuse(F1) = 0 ohm
[ refer to check point - ]
Change SMPS
Module
Check Primary E-Cap (C1)
Measured 300V or more
[refer to check point - ]
11 2 2
Change SMPS
Module
Check Secondary Cap. (C5)
or Secondary Rect. Diode (D2)
Measured 14V (Off) or 33V(On)
[refer to check point - ]
3 3
Change SMPS
Module
Check DC-DC Regulator
IC1002 Measured
7V (Off) or 12V(On) at C1052
[refer to check point ]
4
Change IC1002
Check Regulator IC
(IC1005)
Measured 3.3V at Pin 2
[refer to check point ]
5
Change IC1005
Check Connector (P1801)
Measured 5/3.3/12/V
at Pin 1/3/5
[refer to check point ]
7
Check Main P.C.B
Check Regulator IC
(IC1004)
Measured 1.6V at Pin 3
[refer to check point ]
6
Change IC1004
If No Display on
FL Display (DP6801)
Check Panel P.C.B
OK OK
OKOK OK OK OK
NG
NGNG
NG
NG
GNGN NG
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
Press [PAIRING] on the Set
or Remote Control
Display "BLUETOOTH"
Check IC2001 pin
119/120 for Tx Rx
waveform
NG
"PAIRING" will display and
blinking while handphone or
other devices are connecting
to the Set
Do Cold Start and AC Plug Out .
Press and hold Power Button then
AC Plug-IN, wait to display "-------"
then will OFF the Set back to start.
NG
1) Check IC2001 on Main PCB,
pin 119/120 on Main PCB
2) Check Bluetooth Module
(IC7000)
option 1 (Do once)
option 2
The set will displayed
the
"READY" followed
by "BLUETOOTH"
No Problem
Found
OK KOKO
Press Power Button
or CD Door Open of Unit
to Turn ON the Unit
If Cannot
Power ON
(No Display)
Check Main P.C.B
OK
NG
Use Remote Control
to Turn ON the Set
FL Display
Show "HELLO"
OK Press Power Buttons
or Other Buttons
Check FFC between Main
P.C.B.and Panel P.C.B
NG
OK All Buttons
are Working
Check Panel P.C.B
NG
OK No Problem
Found

20
7.4. No Remote Control Function
7.5. USB Device Cannot Detect
7.6. No Output Sound
Press Remote Control
Power Button
to Power ON the unit
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
Check Panel P.C.B,
IR6500, pin3 for 3.3V,
pin 1 for IR waveform.
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 ]
5
8
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
Change Pin 97 & Pin 98
at IC2001 on
Main PCB
NG
Plug-in USB Device to USB port
FL Display "USB"
NG
Change IC9001
NG
Press Play
FL Display
"Music Name or Title"
No Problem
Found
OK KOKO
Press [USB/CD] on the Set or
Remote Control to
Select USB, Display
" USB" and "NO DEVICE"
USB_5V at IC9001 pin #1
[refer to check point ]
Noted: DAB+/FM mode
(For UX102 only)
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
Check IC2001
Output I2S
Pin81-83
NG
Press Play
FL Display " Track & Count"
NG
Output Sound No Problem
Found
OK OK OK
Select
CD Mode
Check CD Mechanism
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
Check Pin 97 and
Pin 98
at IC2001
NG
Insert USB Thumdrive
FL Display "USB"
Press "Play"
NG
Output Sound No Problem
Found
OK KOKO
Select
USB Mode
Change USB drive
Press Power Button
of Unit or Remote
Control
to Turn ON the Unit
Check IC2001
(Pin 101-103,
105-108)
NG
Press Play
FL Display "BLUETOOTH "
NG
Output Sound No Problem
Found
OK OK OK
Select Bluetooth
Mode
Re-connect Bluetooth
into the Device
Press the Power Button
of Unit or Remote
Control
to Turn ON the Unit
Check IC2001
(Pin 110-112,
Pin 73, 74)
NG
Search for Tuner Signal
NG
Output Sound No Problem
Found
OK OK OK
Select
FM Mode
Check the Antenna
Wire Connection
NG
Change IC2001
OK
Check IC6500
PWM output
Pin27-30
NG
Check Pin 35, 40
at IC6500
Check IC1002
NG
Check SMPS
Module
NG
OK
Check IC6000
Speaker output
Pin27/32/35/39
NG
Check +12V
at Pin 1, 12
at IC6000
Change IC6000
Check +32V
at Pin 29, 36
at IC6000
OK
OK
OK
OK
OK
Check Pin 41, 42
at IC6500
Change X6500
NG
OK
Check
IC1005
NG
Check
IC2001
OK
CD Play
USB Play
Tuner Mode
Bluetooth Play
Change Traverse Unit
Press the Power Button
of Unit or Remote
Control
to Turn ON the Unit
Check IC4201
Signal IN (pin1)
Supply (pin 3,19,22)
Output Signal (pin27)
Input signal (pin 28, 29)
NG
Play music/sound from external
Device (Player or TV)
Check optical cable is connected
properly from sourceto D-IN.
Source output format is PCM
Source Fs 16kHz to 96kHz
NG
Output Sound No Problem
Found
OK OK OK
Select
D-IN
OK
Check IC4401
(Data out
pin 4)
OK
NG
NG
Signal (pin1) - Checkoptical Jack
Supply (pin 3,19,22) - Check ferrite bead
LB4201, LB4202, LB4203
input signal pin 28, 29)- Check SOC
Output Signal (pin27)- change IC4201
Change
IC4401
IC2001 I2S out
pin 81 to 83
NG
Change
IC2001
Check DSP
OK
D-IN (Optical) Mode