Panasonic SU-HTB570EB / SU-HTB570EG / SB-HTB570EG / SB-HWA570EB / SB-HWA570EG / SC-HTB570EB / SC-HTB570EG / SC-HTB570EGS Service Manual ▷ View online
29
9 Troubleshooting Guide
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.
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.
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)
SC-HTB
570
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
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 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
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 [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
outlet connection
The primary side of main power
supply abnormal
supply abnormal
Check the continuity of primary side power circuit
・Short-open power transformer, electrolytic diode IC · [switching power module]..
・(D5701,C5712,IC5701,T5701).
・(D5701,C5712,IC5701,T5701).
After replacement, cut again at
power onon
power onon
The secondary side of main power
supply abnormal
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.
・Check [Panel] IC6001(2,3,4)serial signal.
Video / Audio
confirmation
HDMI
confirmation
HDMI
No video and audio
(Power ON / Standby Pass Through)
(Power ON / Standby Pass Through)
1) External Connection checking
i) Check whether HDMI Input and
Output is reversed.
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.
・[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
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
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
LL&KHFNZKHWKHU9LVSUHVHQW
Check IC1100 (Pin 1) , IC1200 (Pin 5)
Check IC1101 (Pin 1) , IC1200 (Pin 5)
+3.3V Supply is present
96XSSO\LVSUHVHQW
3) HDMI Output Voltage Checking
i) +5V supply to TV : HDMI_OUT_+5V
&KHFN783LQ/%,&3LQ
+5V Supply is present
4) Hot Plug Voltage checking
i) Hot Plug voltage from TV
&KHFN783LQ,&3LQ
+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
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
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.
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
ii) HDMI Input TMDS and DDC signal lines
Check Pattern between IC1000 and TU1200
Check Pattern between IC1000 and TU1300 or
TU1325 or TU1350
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
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
&KHFN&13LQ ,&3LQ
There is signal present
30
Bluetooth (BT)
Module
SubWoofer RF
Receiver Module
SB-HWA
Video / Audio
confirmation
HDMI
confirmation
HDMI
No audio from Main set speaker
(Video is present)
(Power ON Mode only)
(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
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)
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
There is signal present when playing
There is signal present when playing
Audio confirmation
Sound skip from front speaker
(Bluetooth input)
(Bluetooth input)
Check the radio wave interference of other wireless
equipment (cordless phone, microwave oven,
WiFi, other BT devices).
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)
(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
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
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.
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
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
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"
setting is set to "Home Theater"
Speaker Selection is set to "Home Theater"
Video / Audio
confirmation
HDMI
confirmation
HDMI
Video / Audio
confirmation
HDMI
confirmation
HDMI
No audio form TV
(Video is present)
(Power ON / Standby Pass Through)
(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"
ii) Check Player Audio output is set to "ON"
Check TV Menu (Viera Menu Link foir Panasonic TV)
Check Player Setup Menu
Check Player Setup Menu
Speaker Selection is set to "TV"
HDMI Audio Output setting is set to "ON"
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)
(PAIRING OK)
Subwoofer
(SB-HWA)sound skip
Check the radio wave interference of other
wireless equipment(2.4GHz band)
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
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)
(PAIRING FAILED)
Unable to view HTB in list of BT devices in
external BT device
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,
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
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)
connection (2-wire cable assembly)
Front speaker voice normal
Wireless link light checking
(SB-HWA upper left front)
(SB-HWA upper left front)
Check the connection from Digital Amplifier board
to SW speaker
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
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
Check the pairing status
Wireless Link LED lights RED
HTB570
HTB570
HTB370
HTB570/HTB370
31
10 Service Fixture & Tools
Prepare service tools before process service position.
Ref. No.
Part No.
Description
Remarks
SFT1
REXX1194
2P WIRE (SPK-SW DAMP)
SB-HWA570
32
11 Disassembly and Assembly Instructions
Caution Note:
• This section describes the disassembly and/or assembly procedures for all major printed circuit boards & main compo-
nents for the unit. (You may refer to the section of “Main components and P.C.B Locations” as described in this service
manual)
manual)
• Before carrying out the disassembly process, please ensure all the safety precautions & procedures are followed.
• During the disassembly and/or assembly process, please handle with care as there may be chassis components with
• During the disassembly and/or assembly process, please handle with care as there may be chassis components with
sharp edges.
• Avoid touching heatsinks due to its high temperature after prolong use. (See caution as described below)
• During disassembly and assembly, please ensure proper service tools, equipments or jigs is being used.
• During replacement of component parts, please refer to the section of “Replacement Parts List” as described in the ser-
• During replacement of component parts, please refer to the section of “Replacement Parts List” as described in the ser-
vice manual.
• Select items from the following indexes when disassembly or replacement are required.
Disassembly of Main Unit (SU-HTB570)
• 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 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 Position
• Disassembly of Front Speaker Units in Bar position
• Disassembly of Front Speaker Unit in Standing position
• Disassembly of Front Speaker Unit in Standing position
Disassembly of Front Speaker (L/R) (SB-HTB570)
• Disassembly of Rear Cabinet Assembly
• Disassembly of Tweeter Speaker (SP1)
• Disassembly of Woofer Speaker (SP2)
• Replacement of the Speaker Wire Assembly
• Disassembly of Tweeter Speaker (SP1)
• Disassembly of Woofer Speaker (SP2)
• Replacement of the Speaker Wire Assembly
Disassembly of Active Subwoofer (SB-HWA570)
• 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)
• 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)
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