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29

䞉How to reset䚷䠄Factory setup condition䠅

䠍䠊Turn on the power of main set.
䠎䠊Press and hold the power button for 5 seconds.

(Repeat the flashing of all LED twice)

 3

䠊Turn off the power.

䞉The entering method of Service Mode䚷(after turn off the power, you can exit from Service Mode) 

䠍䠊 Setting main set in power on status. 
䠎䠊 Press the main set [Volume-] button, then continue press the [SUB -] & [SUB +] of remote control.

       (All LEDs will blink four times, followed by all LEDs OFF)

Main set power ON

Power do not turn on

Power on by remote control ・OK

Power on by remote control ・NG

Check the connection of FFC connector
FFC wire checking 
Switch operation checking 
LED display checking

(The input display LED not lit）

Power input but turn off immediately

・Check the 13P of [Panel]-[Main] & 26P of [HDMI]-[Main] & 10P of [Switching power module]-[Main] & each FFC connector.
・Check the 13P of [Panel]-[Main] & 26P of [HDMI]-[Main] & 10P of [Switching power module]-[Main] & each FFC wire.
・7KHERWKHQGYROWDJHRI>3DQHO@SRZHUVZLWFK6LVSUHVVĺ０9UHOHDVHĺ9

Check the connection of FFC connector ・wire
Checking the system 5V circuit
Checking the AC inlet code
Checking fuse cut

・&KHFN>3DQHO@&1ĺ9&1ĺ9 ))&FRQQHFWRURI3FRQQHFWLRQ

・[Switching power module] CN1(5）ĺ9WR9、[Main] IC2202（ĺ9WR9
・Check [Switching power module]-[ACinlet] wire & patterns, solder.
・Check the continuity of [Switching power module] F1.

・Check the IC overcurrent ・overheating ・failure of [Digital Amplifier] ĺ [Digital Amplifier] exchange.

Fuse cut

LED display checking

After replacement, cut again at 
outlet connection

The primary side of main power 
supply abnormal

Check the continuity of primary side power circuit

・Short-open power transformer, electrolytic diode IC · [switching power module]..
・(D5701,C5712,IC5701,T5701).

After replacement, cut again at 
power onon

The secondary side of main power 
supply abnormal

Check the continuity of secondary side power circuit

・Short-open power-electrolytic IC diode [switching power module].
・'&,&

Check the display by Service Mode

Some not lighting ・not light off

Failure of drive IC ・Failur of not lights up LED

・>3DQHO@,&/('：21ĺ92))ĺ9

All not lighting

Check drive IC ・serial signal ・FFC

・>3DQHO@,&ĺ9、D6001（Anode）ĺ9
・Check [Panel] IC6001（2,3,4）serial signal.

Video / Audio 
confirmation
HDMI

No video and audio
(Power ON / Standby Pass Through)

1) External Connection checking

i) Check whether HDMI Input and 
Output is reversed.

ii) Check whether HDMI cable properly inserted.

Check Cable connection

Check Cable connection

Error contents F61

Error contents F76

Television LED flashing,  power off

・&KHFNWKHHDFKSRZHU)$1'$0399

Television & external 1 LED flashing, power off

Power input but LED error display

・[Main] DSP & communication error of the microcomputer　ĺ　[Main] board exchange.
・[Main], IC of [Digital Amplifier] DAMP & communication error of the microcomputer　ĺ　[Digital Amplifier] baord exchange.
・[Main] IC of HDMI & communication error of the microcomputer　ĺ　[Main] board.

Error contents U701/703/704

Error contents F70 DSP
Error contents F70 DAP
Error contents

　F70 HDMI

Television & external 1, dolby LED flashing
Television & external 1, dolby, DTS  LED flashing
Television & external 1, dolby, DTS , AAC
LED flashing

・Try once to "On / Off" the power of the connected device. Try to connect or disconnect the HDMI cable.

External 1 LED only repeat flashing

Cable not reverse

Cable inserted properly

2) HDMI Supply Voltage checking

i) Check whether +3.3V is present

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Check IC1100 (Pin 1) , IC1200 (Pin 5)

Check IC1101 (Pin 1) , IC1200 (Pin 5)

+3.3V Supply is present

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3) HDMI Output Voltage Checking 

i) +5V supply to TV : HDMI_OUT_+5V

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+5V Supply is present

4) Hot Plug Voltage checking

i) Hot Plug voltage from TV

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+5V Supply is present

5) Parts availability and solderbility condition

i) HDMI Tx/Rx LSI
ii) TMDS output swing amplitude control resistor
iii) HDMI Output Connector
iv) HDMI Output Common-Mode Choke
v) HDMI Output +5V Regulator
vi) HDMI Input Connector
vii) HDMI Input Common-Mode Choke

viii) HDMI Input +5V detect

Check IC1000
Check R1001
Check TU1200
Check L1200, L1201
Check IC1200
Check TU1300, TU1325, TU1350
Check Input A : L1300, L1301
Check Input B : L1325, L1326
Check Input C : L1350, L1351
Check D1104, D1105, D1106

All pins fully soldered. No Short.
No missing and all pins fully soldered. No Short.
All pins fully soldered. No Short.
No missing and all pins fully soldered. No Short. There is connections between IC1000 and TU1200
No missing and all pins fully soldered. No Short.
No missing and all pins fully soldered. No Short.
No missing and all pins fully soldered. No Short.

No missing and all pins fully soldered. No Short.

6) HDMI Connections Checking

i) HDMI Output TMDS and DDC signal lines
ii) HDMI Input TMDS and DDC signal lines

Check Pattern between IC1000 and TU1200
Check Pattern between IC1000 and TU1300 or 
TU1325 or TU1350

There is connection from IC1000 pin to TU1200 pin
There is connection from IC1000 pin to TU1300 or TU1325 or TU1350 pin

7) HDMI Communication line checking

i) HDMI I2C control line from Main Micon

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There is signal present

30

Bluetooth (BT)

Module

SubWoofer RF 

Receiver Module 

SB-HWA

Video / Audio 
confirmation
HDMI

No audio from Main set speaker
(Video is present)
(Power ON Mode only)

1) HDMI audio line checking

i) For 2ch Source : Check HDMI_SPDIF line
   For Multi-ch Source : Check HDMI I2S lines
ii) Check HDMI LRCK and SCLK line

Check CN1000 (Pin 17)
Check CN1000 (Pin 19, 20, 21, 22)
Check CN1000 (Pin 24, 25)

There is SPDIF signal present (Duty Cycle > 50%)
There is signal present when playing
There is signal present when playing

Audio confirmation

Sound skip from front speaker
(Bluetooth input)

Check the radio wave interference of other wireless
 equipment (cordless phone, microwave oven, 
WiFi, other BT devices).

Place subwoofer & other wireless equipment more than 2 meters away from main unit

No sound from front speaker
(Bluetooth input)

Check the connection to front speaker 

Check Main board (Micon/DSP & Digital Amplifier Circuit)--> Main board change

3) Parts availability and solderbility condition

i) HDMI Output +5V Regulator
ii) HDMI Output Connector
iii) HDMI Output Common-Mode Choke
iv) TMDS Output swing amplitude control resistor

Check IC1200
Check TU1200
Check L1200, L1201
Check R1001

No missing and all pins fully soldered. No Short.
All pins fully soldered. No Short.
No missing and all pins fully soldered. No Short. There is connections between IC1000 and TU1200
No missing and all pins fully soldered. No Short.

2) Parts solderbility condition

i) HDMI SPDIF line
ii) HDMI I2S lines

iii) HDMI LRCK and SCLK line

Check R1406
Check FL/FR : R1405
Check C/LFE : R1404
Check SL/SR : R1403
Check SBL/SBR : R1402
Check R1400, R1401

3) HDMI Audio Lines Connection Checking

i) HDMI SPDIF, I2S, LRCK and SCLK lines

Check Pattern between IC1000 and CN1000

There is connection from IC1000 pin to CN1000 pin

4) HDMI audio setting checking

i) Check TV Viera Link Menu Speaker selection 
setting is set to "Home Theater" 

Speaker Selection is set to "Home Theater"

Video / Audio 
confirmation
HDMI

Video / Audio 
confirmation
HDMI

No audio form TV
(Video is present)
(Power ON / Standby Pass Through)

1) HDMI audio setting checking

i) Check TV Speaker selection setting
ii) Check Player Audio output is set to "ON"

Check TV Menu (Viera Menu Link foir Panasonic TV)
Check Player Setup Menu

Speaker Selection is set to "TV"
HDMI Audio Output setting is set to "ON"

No video and audio from TV

(Audio present from set speakers)

1) HDMI Output Voltage Checking 

i) +5V supply to TV : HDMI_OUT_+5V

BT LED blinks quickly then becomes steady
(PAIRING OK)

Subwoofer

（SB-HWA）sound skip

Check the radio wave interference of other 
wireless equipment（2.4GHz band）

Place subwoofer & other wireless equipment more than 2 meters away from main unit

Failure of Digital Amplifier Circuit of the subwoofer.

Front speaker voice normal

Check BT module connection to main board

Check Main board CN2003(1) and IC2203(1)-->3.3V; 
Check L2003 or R2044,R2045
Check LB2014 and LB2015
Check USB Switch circuit --> IC2003(10)-->+5V
If all above are OK, replace BT module

BT LED does not blink quickly/no change
(PAIRING FAILED)

Unable to view HTB in list of BT devices in 
external BT device

Check TU1200 (Pin 18) , LB1203, IC1200 (Pin4)

+5V Supply is present

2) Hot Plug Voltage checking

i) Hot Plug voltage from TV

Check TU1200 (Pin 19) , IC1000 (Pin 41)

Check the OPT terminal ・OPT cable

&KHFNWKH>0DLQ'LJLWDO$PSOLILHU@-.-.ĺ9、output (3) SPDIF waveform.

+5V Supply is present

Audio confirmation

No audio output (OPT input  2 systems)

HDMI input (1 system) voice appear

The failure of Input ・DSP systems, DAMP systems

Check the [HDMI]-[Main Digital Amplifier] 26P  FFC・connector

No audio output (HDMI input 1 systems)

OPT (2 system) voice appear

Check the ARC circuit failure・HDMI cable

Check the [HDMI]-[Main Digital Amplifier] 26P  FFC・connector

No audio output (HDMI/ARC support)

OPT (2 system) voice appear

Check AUX circuit and PCB

Check the [AUX]- [Main Digital Amplifier]  4P wire conector

No audio ouput at AUX input 

OPT (2 system) voice appear

The failure of PWM driver from IC2000, FET 
Amplifier Q5303, Q5304,

　Q5403 and Q5404

Check PWM out at pin3 of Q5303 and Q5304 for front left channel
Check PWM out at pin3 of Q5403 and Q5404 for front right channel

No sound from front speaker

Subwoofer voice normal

Subwoofer（SB-HWA）no sound

Check the main unit & subwoofer wireless 
connection (2-wire cable assembly)

Front speaker voice normal

Wireless link light checking
(SB-HWA upper left front）

Check the connection from Digital Amplifier board 
to SW speaker

Wireless Link LED lights GREEN

Power cycle the main unit and subwoofer.
Redo pairing (refer to OI)
Failure of Transmitter board on Main Unit or Receiver board on Subwoofer

Check the wireless link
Check the pairing status

Wireless Link LED lights RED

31

Prepare service tools before process service position.

SFT1

REXX1194

2P WIRE (SPK-SW DAMP)

SB-HWA570

32

• Disassembly of Top Cabinet
• Disassembly of SMPS and AC Inlet P.C.B.
• Replacement of Switching Regulator IC (IC5701)
• Replacement of Rectifier Diode (D5802)
• Disassembly of Main P.C.B.
• Disassembly of HDMI P.C.B.
• Disassembly of Rear Panel
• Disassembly of Front Panel Block
• Disassembly of Bluetooth Module P.C.B.
• Disassembly of Panel P.C.B.
• Disassembly of Digital Transmitter Module P.C.B.

• Disassembly of Front Speaker Units in Bar position
• Disassembly of Front Speaker Unit in Standing position

• Disassembly of Rear Cabinet Assembly
• Disassembly of Tweeter Speaker (SP1)
• Disassembly of Woofer Speaker (SP2)
• Replacement of the Speaker Wire Assembly

• Disassembly of Rear Panel Block
• Disassembly of Digital Receiver Module P.C.B.
• Disassembly of SW DAMP P.C.B.
• Replacement of Digital Amplifier IC (IC5200)
• Disassembly of Power Button P.C.B.
• Disassembly of SW SMPS and SW AC Inlet P.C.B.
• Replacement of Switching Regulator IC (IC5701)
• Replacement of Rectifier Diode (D5802)
• Disassembly of Bottom Panel Assembly
• Disassembly of Woofer Speaker (SP61)