Panasonic SC-UA7E User manual

© Panasonic Corporation 2016. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
PSG1606004CE
A6
Wireless Speaker System
Model No. SC-UA7E
SC-UA7PC
SC-UA7PH
SC-UA7PR
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)--------------------------- 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. General description about Lead Free Solder
(PbF)---------------------------------------------------------- 8
2.3. Grounding for electrostatic breakdown
prevention --------------------------------------------------- 8
3 Service Navigation----------------------------------------------- 9
3.1. Service Information----------------------------------------9
3.2. Software Update Procedure-----------------------------9
4 Specifications----------------------------------------------------10
5 Location of Controls and Components------------------ 11
5.1. Remote Control Key Button Operation (For E/
PH/PR)------------------------------------------------------ 11
5.2. Remote Control Key Button Operation (For
PC)-----------------------------------------------------------12
5.3. Main Unit Key Button Operation---------------------- 13
6 Service Mode-----------------------------------------------------14
6.1. Self Diagnostic Mode -----------------------------------14
6.2. Doctor Mode----------------------------------------------- 15
6.3. Self-Diagnostic Error Code Table--------------------17
7 Troubleshooting Guide --------------------------------------- 18

2
7.1. No Power or No Display-------------------------------18
7.2. Bluetooth® Pairing Failure-----------------------------18
7.3. No Key Function (Touch Panel) ----------------------18
7.4. No Remote Control Function--------------------------18
7.5. No NFC-----------------------------------------------------19
7.6. USB Device Cannot Detect----------------------------19
7.7. Fuse Checking--------------------------------------------19
7.8. No Output Sound-----------------------------------------20
7.9. Check Point------------------------------------------------21
8 Disassembly and Assembly Instructions---------------23
8.1. Type of Screws -------------------------------------------23
8.2. Disassembly Flow Chart--------------------------------24
8.3. Main Components and P.C.B. Locations-----------25
8.4. Disassembly of Rear Panel ---------------------------26
8.5. Disassembly of Top Panel Unit-----------------------26
8.6. Disassembly of Left & Right Side Panel
Assembly---------------------------------------------------27
8.7. Disassembly Upper Front Panel Assembly--------27
8.8. Disassembly Panel Block ------------------------------28
8.9. Disassembly of Mic P.C.B.-----------------------------28
8.10. Disassembly of Panel/IR Sensor P.C.B.------------28
8.11. Disassembly of USB P.C.B. ---------------------------29
8.12. Disassembly of NFC P.C.B. ---------------------------29
8.13. Disassembly of Touch Sensor P.C.B.
Assembly---------------------------------------------------30
8.14. Disassembly of Main P.C.B.---------------------------30
8.15. Disassembly of DAMP P.C.B.-------------------------31
8.16. Disassembly of SMPS/AC Inlet P.C.B.--------------32
8.17. Disassembly of Top Speaker Block------------------32
8.18. Disassembly of Speaker Units------------------------33
8.19. Disassembly of Lighting P.C.B.-----------------------33
9 Service Position-------------------------------------------------34
9.1. Checking of SMPS/AC Inlet, DAMP, Main and
Panel/IR Sensor P.C.B.---------------------------------34
10 Block Diagram ---------------------------------------------------35
10.1. System Control -------------------------------------------35
10.2. Audio --------------------------------------------------------37
10.3. Power Supply ---------------------------------------------39
11 Wiring Connection Diagram---------------------------------41
12 Schematic Diagram---------------------------------------------43
12.1. Schematic Diagram Notes-----------------------------43
12.2. Main (AUX Tuner) Circuit (1/2) -----------------------45
12.3. Main (AUX Tuner) Circuit (2/2) -----------------------46
12.4. Main (Connector) Circuit (1/2) ------------------------47
12.5. Main (Connector) Circuit (2/2) ------------------------48
12.6. Main (DSP) Circuit---------------------------------------49
12.7. Main (LDO) Circuit---------------------------------------50
12.8. Main (Optical) Circuit------------------------------------51
12.9. Main (MICON) Circuit (1/3) ----------------------------52
12.10. Main (MICON) Circuit (2/3) ----------------------------53
12.11. Main (MICON) Circuit (3/3) ----------------------------54
12.12. Main (USB) Circuit---------------------------------------55
12.13. Panel Circuit (1/2)----------------------------------------56
12.14. Panel Circuit (2/2)----------------------------------------57
12.15. Mic Circuit--------------------------------------------------58
12.16. IR Sensor and USB Circuit ----------------------------59
12.17. DAMP Circuit (1/3)---------------------------------------60
12.18. DAMP Circuit (2/3)---------------------------------------61
12.19. DAMP Circuit (3/3)---------------------------------------62
12.20. DAMP (VREG) Circuit (1/2)----------------------------63
12.21. DAMP (VREG) Circuit (2/2)----------------------------64
12.22. AC Inlet and SMPS Circuit (1/2)--------------------- 65
12.23. SMPS Circuit (2/2)--------------------------------------- 66
13 Printed Circuit Board------------------------------------------ 67
13.1. Main P.C.B. (Side A)------------------------------------ 67
13.2. Main P.C.B. (Side B)------------------------------------ 68
13.3. Panel and IR Sensor P.C.B.--------------------------- 69
13.4. Mic and USB P.C.B.------------------------------------- 70
13.5. DAMP P.C.B. (Side A)---------------------------------- 71
13.6. DAMP P.C.B. (Side B)---------------------------------- 72
13.7. SMPS P.C.B.---------------------------------------------- 73
13.8. AC Inlet P.C.B.-------------------------------------------- 74
14 Voltage and Waveform Measurement-------------------- 75
14.1. Voltage Measurement ---------------------------------- 75
15 Exploded View and Replacement Parts List----------- 81
15.1. Cabinet Parts Location 1------------------------------- 81
15.2. Cabinet Parts Location 2------------------------------- 82
15.3. Cabinet Parts Location 3------------------------------- 83
15.4. Cabinet Parts Location 4------------------------------- 84
15.5. Packaging ------------------------------------------------- 85
15.6. Mechanical Replacement Part List------------------ 87
15.7. Electrical Replacement Part List--------------------- 89

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.
(This “Safety Precaution” is applied only in U.S.A.)
1. Before servicing, unplug the power cord to prevent an electric shock.
2. When replacing parts, use only manufacturer’s recommended components for safety.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent
the customer from being exposed to a shock hazard.
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 Repair and Adjustment
Disconnect AC power to discharge AC capacitor (in SMPS P.C.B.) as indicate below diagram through a 10 , 10 W resistor to
ground.
Figure 1-2
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 FM Tuner at volume minimum should be ~ 550mA (E).
Current consumption at AC 110~127 V / 220~240 V, 50/60 Hz in FM Tuner at volume minimum should be ~ 550mA (PH).
Current consumption at AC 220~240 V, 50/60 Hz in FM Tuner at volume minimum should be ~ 550mA (PR).
Current consumption at AC 120 V, 60 Hz in FM Tuner at volume minimum should be ~ 550mA (PC).
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)
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
21 RGR0487A-A1 REAR PANEL E
21 RGR0487A-C1 REAR PANEL PH
21 RGR0487A-D REAR PANEL PR
21 RGR0487A-F REAR PANEL PC
A2 K2CA2YY00039 AC CORD PR
A2 K2CQ2YY00119 AC CORD E,PH
A2 K2CT2YY00097 AC CORD E
A2 RFA3683 AC CORD PC
A3 RQT0B12-1B O/I BOOK(En) PH
A3 RQT0B13-1M O/I BOOK(Sp) PH,PR
A3 RQT0B16-1D O/I BOOK(Ge,Fr,It,Du,Po,Cz) E
A3 RQT0B24-1E O/I BOOK(En,Sw,Da,Fi,Sp) E
A3 RQT0B31-C O/I BOOK(En,Cf) PC
PCB7 REP5347B SMPS / AC INLET P.C.B (RTL) PH, PR
PCB7 REP5347C SMPS / AC INLET P.C.B (RTL) PC
PCB7 REP5347A SMPS / AC INLET P.C.B (RTL) E
Q1403 B3PBA0000579 TRANSISTOR
Q1404 B3PBA0000579 TRANSISTOR
Q1405 B3PBA0000579 TRANSISTOR
Q1505 B3PBA0000579 TRANSISTOR
Q1701 B3PBA0000579 TRANSISTOR
DZ1001 D4EAY511A127 VARISTOR
L1001 G0B223J00001 LINE FILTER E,PC
L1002 G0B502J00005 LINE FILTER PH,PR
L1003 G0B223J00001 LINE FILTER E,PC
T1401 G4DYA0000592 TRANSFORMER
T1501 G4DYA0000778 TRANSFORMER
F1001 K5D103BNA005 FUSE
F1401 K5G501YA0081 FUSE
F1501 K5G502Y00006 FUSE
P1001 K2AA2B000011 AC INLET E,PH,PR
P1001 K2AB2B000007 AC INLET PC
R1001 D0GF105JA048 1M 1/4W PC,PH,PR
R1001 D0GF474JA048 470K 1/4W E
R1002 D0GF105JA048 1M 1/4W PC,PH,PR
R1002 D0GF474JA048 470K 1/4W E
R1003 D0GF105JA048 1M 1/4W PC,PH,PR
R1003 D0GF474JA048 470K 1/4W E
C1001 F0CAF104A105 0.1uF PH,PR
C1001 F0CAF474A105 0.47uF E,PC
C1002 F0CAF474A105 0.47uF E,PC
C1003 F1BAF471A215 470pF E,PC
C1004 F1BAF471A215 470pF E,PC
C1006 F0CAF224A105 0.22uF PH,PR
C1007 F1BAF471A215 470pF
C1008 F1BAF471A215 470pF
C1409 F1BAF471A215 470pF
C1518 F1BAF471A215 470pF

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).

8
2.2. 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%
2.3. 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.
2.3.1. Worktable grounding
• Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed and ground the sheet.
2.3.2. Human body grounding
• Use the anti-static wrist strap to discharge the static electricity form your body Figure 2-1.
Figure 2-1
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

9
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.
3.2. Software Update Procedure

10
4 Specifications
QAmplifier section
RMS output power stereo mode
Front (Left/Right Ch)
375 W per channel (3 Ω), 1 kHz, 30% THD
Subwoofer Ch (2 Ch)
475 W per channel (2 Ω), 100 Hz, 30% THD
Total RMS stereo mode power 1700 W
FTC output power stereo mode (For PC)
Front (Left/Right Ch)
140 W per channel (3 Ω), 200 Hz to 20 kHz, 1% THD
Subwoofer Ch (2 Ch)
220 W per channel (2 Ω), 20 Hz to 200 Hz, 1% THD
Total FTC stereo mode power 720 W
QTuner, terminals section
Frequency modulation (FM)
Preset memory 30 stations
Frequency range
87.50 MHz to 108.00 MHz (50 kHz step) (For E/PH/PR)
87.9 MHz to 107.9 MHz (200 kHz step) (For PC)
87.5 MHz to 108.0 MHz (100 kHz step) (For PC)
Antenna terminals 75 Ω(unbalanced)
Digital audio input
Optical digital input Optical terminal
Sampling frequency 32 kHz, 44.1 kHz, 48 kHz
AUX IN 1
Audio input Pin jack
AUX IN 2
Te r m i n a l Stereo, 3.5 (1/8”) mm jack
AUDIO OUT
Terminal Pin jack
Microphone (For E)
Te r m i n a l Mono, 6.3 mm (1/4”) jack (2 sys-
tems)
Microphone (For PC/PH)
Te r m i n a l Mono, 6.3 mm (1/4”) jack (1 sys-
tem)
QUSB 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
Bit rate 128 kbps
USB recording speed 1x
Recording file format MP3 (*.mp3)
QBuetooth®section
Version Bluetooth®Ver. 2.1 + EDR
Class Class 2
Supported profiles A2DP, AVRCP, SPP, OPP, FTP
Operating frequency 2.4 GHz band FH-SS
Operation distance 10 m line of sight
QInternal memory section (For E/PH)
Memory
Memory size 4 GB
Media file format support MP3 (*.mp3)
Memory recording
Bit rate 128 kbps
Memory recording speed 1x
Recording file format MP3 (*.mp3)
QGeneral
Power supply
AC 220 V to 240 V, 50 Hz (for E)
AC 120 V, 60 Hz (for PC)
AC 110 to 127/220 to 240 V, 50/60 Hz (for PH)
AC 220 to 240 V, 50/60 Hz (for PR)
Power consumption 190 W
(For Mexico)
Power consumption per day 190 Wh per day (190 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) 260 mm x 744 mm x 295 mm
(10 1/4” x 29 3/8” x 11 5/8”)
Mass 14 kg (30.9 lbs)
Operating temperature range 0 °C to +40 °C (+32 °F to +104 °F)
Operating humidity range 35% to 80% RH (no condensa-
tion)
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 approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.

11
5 Location of Controls and Components
5.1. Remote Control Key Button Operation (For E/PH/PR)

12
5.2. Remote Control Key Button Operation (For PC)

13
5.3. Main Unit Key Button Operation

14
6 Service Mode
6.1. Self Diagnostic Mode
Step 1 : Enter service mode
Press [DISPLAY] on the
remote control.
To carry out cold-start or initialize
to shipping mode
Select [ ] and [>] on
main set for 2 seconds.
When [SERVICE? ]
appear, press [SELECT]
on main set to confirm.
In service mode,
Press [OK] on main
unit for more than 5
seconds.
In service mode, press
[SETUP] on remote
control.
When “AC OUT” appear,
unplug AC power cord.
Plug in AC power cord.
Step 2 :
Step 1 :
Step 1 :
Step 2 :
Step 1 :
Step 3 :

15
6.2. Doctor Mode
Note: To enter the Doctor Mode, please use SC-UA7 remote control. (Part No : N2QAYB001082)
6.2.1. Doctor Mode Table 1
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Doctor Mode To enter into Doctor Mode for
checking of various items and
displaying EEPROM check sum
and Opecon firmware version.
Note: The Opecon firmware
version as shown is an example.
It will be revised when there is
updates.
FM, USB or Bluetooth Mode:nI
1. Press [ ] button on
main unit follow by [4]
and [7] on remote control.
2. To cancel this mode, press
[0] button on the remote
control or press
[ ] button on Main Unit.
Displaying of
1. Year Develop.
2. Model Type.
3. ROM Type.
4. Firmware Version.
5. SDK Version.
(Display 1)
(Display 3)
(Display 2)
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
2. To cancel this mode, press
[0] button on the remote
control or press
5
Volume Setting
Check
To check the volume setting of the
main unit.
In Doctor Mode:
1. Press [7], [8], [9] button on
the remote control.
Press [7]: VOL50
Press [8]: VOL35
Press [9]: VOL0
Volume
FL Display
Check
To check the FL segment display.
All segments will light up while all
LED blink at 0.5s intervals.
In Doctor mode:
1. Press [1] button on the
remote control.
2. To cancel this mode, press
[0] button on the remote
control.
[ ] button on Main Unit.

16
6.2.2. Doctor Mode Table 2
Mode Name
Item
Description
Bluetooth mac
Address Checking
Bluetooth Address Check
FL Display
Display of BlueTooth MAC Address will scroll
forever
Key Operation
Front Key
In Doctor Mode:
1. Press [10] [4] [1] and
display will show.
Bluetooth Module
Check
Bluetooth module check and
NFC writing
Device name is set to [SC-UA7-XX]
X= region number (Please refer table below).
In Doctor Mode:
1. Press [USB REC] and
display will show.
In Doctor Mode:
1. Press [10] [1] [6] button
on the remote control.
AD value of region pin is check and display will
show [REG YYY] based on region table.
YYY = 1 ~ 5 based on region table as below.
Region Check Checking for model no and
Region
Region Model
UA7
PH/PR2
LB6
GS8
PC12
E13
Series
2. To cancel this mode press
[POWER, /I] button on
Main Unit
2. To cancel this mode press
2. To cancel this mode, press
[0] button on the remote
control or press
Region Model
UA7
PH/PR2
LB6
GS8
PC12
E13
Series
[ ] button on Main Unit.
[ ] button on Main Unit.

17
6.3. Self-Diagnostic Error Code Table
Self-Diagnostic Function (Refer Section 6.4. Self-Diagnostic Mode) 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.
6.3.1. Power Supply Error Code Table
6.3.2. Bluetooth Error Code Table
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Error Code F61
Power Amp IC output abnormal.
Upon power on, PCONT=HIGH,
DC_DET_AMP after checking LSI.
Error Code F76
Power Amp IC output abnormal.
DC_DET_PWR.
Press [ ] on main unit
for next error.
Press [ ] on main unit
for next error.
Diagnosis Contents:
Diagnosis Contents:
Solution
(PCB exchange repair)
Check following:
1. Fan Unit
2. SMPS P.C.B.
3. Speaker Connection
Check supply voltages
on Main P.C.B.
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
(IC1004) on Main
P.C.B.

18
7 Troubleshooting Guide
7.1. No Power or No Display
7.2. Bluetooth®Pairing Failure
7.3. No Key Function (Touch Panel)
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(F1001) = 0 ohm
3. Check Fuse(F1401) = 0 ohm
4. Check Fuse(F1501) = 0 ohm
[ refer to check point 1 ]
Change SMPS PCB
Check Primary E-Cap (C1224)
Measured 400V or more
[refer to check point 4 ]
Change SMPS PCB Change SMPS PCB
Change SMPS PCB
Check Standby Regulator IC
(IC2104/IC2108)
Measured 3.3V at Pin 2
[refer to check point 8 ]
OK OK
OK
OK OK
NG
NG
NG
NG
Check Secondary Cap. (C1706)
or Secondary Diode (D1703/D1705)
Measured +40
Change SMPS PCB
NG
Check Primary E-Cap (C1403)
Measured 200V or more
[refer to check point 2 ]
Check Secondary Diode (D1601)
Measured +5
[refer to check point 3 ]
Change Main PCB
NG
Check DC-DC Regulator IC
(IC2107)
Measured 1.55V at pin 3
[refer to check point 9 ]
Change Main PCB
NG
OK
If No Display on
FL Panel
Change Panel
PCB
OK
NG
[refer to check point 5 ]
Press the Power Button
of Unit or Remote Control
to Turn ONthe Unit
Press [ PAIRING] on the Set
or Remote Control
Display" BLUETOOTH"
Change BT+Touch
PanelPCB Assembly
NG
"PAIRING' will displayand
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
Change BT+Touch PanelPCB Assembly
NG
option 1
option 2
The set will displayed the
"CONNECTED" followed
by"BLUETOOTH"
No Problem
Found
OK KOKO
Press the Power Button
on the Unit
to Turn ONthe Unit
If Cannot
Power ON
(No Display)
Refer to 7.1
OK
NG
Use Remote Control
to Turn ONthe Set
FL Display
Show"HELLO"
OK
Press the Power Buttons
or Other Buttons
Check and Ensure that
Touch PanelConnector is
Properly Insert
NG
OK
All Buttons
are Working
If Buttons are not Working
Change the Touch
PanelPCB
NG
OK
No Problem Found
Press the Remote Control
Power Button
to Power ONthe Unit
(Ensure have Battery& New)
If Cannot
Power ON
(No Display)
OK
NG
Press the Power Button
of the Unit
to Turn ONthe Set
FL Display
Show"HELLO"
OK Press Remote
ControlButtons
Change Remote Control
NG
OK All Remote Control
Buttons are Working
OK
No Problem Found
Refer to 7.1
Change IR Sensor
/ PanelPCB
NG
No Problem Found
OK

19
7.5. No NFC
7.6. USB Device Cannot Detect
7.7. Fuse Checking
7.7.1. Main Fuse (F1001)
7.7.2. Back Up Circuit Fuse (F1401)
7.7.3. Back Up Circuit Fuse (F1501)
Press the Power Button
of Unit or Remote Control
to Turn ONthe Unit
Press [ SELECTOR and choose
BLUETOOTH]
on the Set or Remote Control
Display" BLUETOOTH"
Change NFC PCB
NG
Check and Do Setting of NFC.
OFF the Set and Tap the Phone
on NFC Logo to ONthe Set.
Set will ONat BLUETOOTH Mode
NG
Change Main PCB
NG
Set ONwhen Tap the
Phone on NFC Logo
Set will Display
"BLUETOOTH"
No Problem
Found
OK KOKOKO
Check DC-DC Regulator IC
(IC2104)
Measured 3.3Vat Pin 2
[refer to check point 8 ]
Press the Power Button
of Unit or Remote Control
to Turn ONthe Unit
Change DAMP PCB
NG
Plug-in USB Device
FL Display" USB"
NG
Change DAMP PCB
NG
Press Play
FL Display
"Music Name or Title"
No Problem
Found
OK KOKO
Press [ SELECT and
choose USB mode] on the Set
or Use Remote Control
Display" USB and NO DEVICE"
Check DC-DC Regulator IC
(IC2101)
Measured 5.6Vat C2155+
[refer to check point 10 ]
krameRoN
1001Da OK
2041Db OK
1041Fc OK
3011Qd OK
2041CIe OK
Components Criteria
D1001 pin to pin resistance > 0Ω
D1402 pin to pin resistance > 0Ω
F1401
pin to pin resistance > 0ΩQ1103
IC1402
no open
pin 5 to pin 7/8 resistance > 0Ω
krameRoN
2041Db OK
Components Criteria
D1402 pin to pin resistance > 0Ω
krameRoN
f
Q1502 OK
1051Qg OK
6051Dh OKD1506 pin to pin resistance > 0Ω
Components Criteria
Q1502 pin to pin resistance > 0Ω
Q1501 pin to pin resistance > 0Ω

20
7.8. No Output Sound
D-IN Play [Optical In]
USB Pla
y
Bluetooth Play
Tuner Mode
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
Change Main PCB
NG
Press Play
FL Display " D-IN"
NG
Output Sound No Problem
Found
OK OK OK
D-IN Mode
Change input source to USB
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
Change Main PCB
NG
Insert USB Thumdrive
FL Display " USB"
Press "Play"
NG
Output Sound No Problem
Found
OK KOKO
USB Mode
Change USB Thumdrive
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
Change Main PCB
NG
Press Play
FL Display " BLUETOOTH "
NG
Output Sound No Problem
Found
OK OK OK
Bluetooth Mode
Re-connect Bluetooth
into the Device
Press the Power Button
of Unit or Remote Control
to Turn ON the Unit
Change Main PCB
NG
Search for Tuner Signal
NG
Output Sound No Problem
Found
OK OK OK
FM Mode
Check the Antenna
Wire Connection
Change DAMP PCB
NG