Marantz SR7009/U1B User manual

AV Surround Receiver
SR7009 /U1B/N1B/N1SG/K1B/FN
SR7009
S1310V05DM/DG1607
Copyright 2016 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
Ver. 5
•Some illustrations using in this service manual are slightly different from the actual set.
•Please use this service manual with referring to the operating instructions without fail.
•For purposes of improvement, specications and design are subject to change without notice.
Please refer to the
MODIFICATION NOTICE.
Service
Manual

ABOUT THIS MANUAL.............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
SAFETY PRECAUTIONS ..........................................................6
NOTE FOR SCHEMATIC DIAGRAM.........................................7
NOTE FOR PARTS LIST ...........................................................7
TECHNICAL SPECIFICATIONS................................................9
DIMENSION .............................................................................10
CAUTION IN SERVICING........................................................11
Initializing AV SURROUND RECEIVER ..................................11
Service Jig ..............................................................................11
DISASSEMBLY........................................................................12
1. FRONT PANEL ASSY ........................................................14
2. RADIATOR ASSY...............................................................15
3. DIGITAL PCB .....................................................................16
4. VIDEO PCB........................................................................17
5. INPUT and HDAM PCB .....................................................17
6. SPK PCB............................................................................18
7. SMPS PCB.........................................................................19
8. TRANS POWER ................................................................19
SPECIAL MODE ......................................................................20
Special Mode Conguration Buttons.......................................20
1. Version Display Mode ........................................................21
2. PANEL / REMOTE LOCK Selection Mode.........................25
3. Selection Modes for Service-related Operations................26
4. Protection Pass Mode........................................................78
5. CX870 / CY920 Initialization mode ....................................79
6. CX870 / CY920 Reboot mode............................................79
JIG FOR SERVICING ..............................................................80
Procedure after Replacing the Microprocessor, etc. ..........83
Firmware Update Procedure..................................................83
1. Updating by USB................................................................83
2. Updating by DPMS.............................................................93
ADJUSTMENT.......................................................................100
SOUND MODES AND CHANNEL OUTPUT .........................101
SOUND MODES AND SURROUND PARAMETERS ............101
TYPES OF INPUT SIGNALS, AND
CORRESPONDING SOUND MODES ..................................102
TROUBLE SHOOTING..........................................................104
1. POWER............................................................................104
2. Analog video ....................................................................105
3. HDMI/DVI .........................................................................108
4. AUDIO..............................................................................110
5. Network/Bluetooth/USB ...................................................113
6. SMPS ...............................................................................119
Audio Check PASS ..............................................................121
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK ...........122
LEVEL DIAGRAM..................................................................123
POWER DIAGRAM................................................................130
WIRING DIAGRAM for CX870 ..............................................131
WIRING DIAGRAM for CY920 ..............................................132
PRINTED WIRING BOARDS.................................................133
SCHEMATIC DIAGRAMS (1/41) ...........................................141
SCH01_DIGITAL_CONNECT ...............................................141
SCH02_DIGITAL_POWER ...................................................142
SCH03_MAIN_CPU ..............................................................143
SCH04_SUB_CPU................................................................144
SCH05_CPU_LEVEL_CHG..................................................145
SCH06_DIR ..........................................................................146
SCH07_AUDIO_PLD ............................................................147
SCH08_DSP1 .......................................................................148
SCH09_DSP2 .......................................................................149
SCH10_DSP3 .......................................................................150
SCH11_DSP4........................................................................151
SCH12_ADC .........................................................................152
SCH13_ZONE_DAC .............................................................153
SCH14_CY920......................................................................154
SCH15_VIDEO_DECODER .................................................155
SCH16_HDMI_SW2..............................................................156
SCH17_HDMI_SW1..............................................................157
SCH18_VSP_IP_OSD ..........................................................158
SCH19_VIDEO_PLD ............................................................159
SCH20_HDMI_TX_SCALER ................................................160
SCH21_ADAPTER (CX870 ONLY).......................................161
SCH22_BLUETOOTH (CX870 ONLY)..................................162
SCH23_INPUT......................................................................163
SCH24_PREOUT..................................................................164
SCH25_FRONT_HDMI .........................................................165
SCH26_VIDEO .....................................................................166
SCH27_RC-5_MX-PORT......................................................167
SCH28_RS232C_TRIGGER.................................................168
SCH29_CONNECT_A...........................................................169
SCH30_CONNECT_B ..........................................................170
SCH31_MAIN DAC1 .............................................................171
SCH32_MAIN_DAC2 ............................................................172
SCH33_SPK .........................................................................173
SCH34_REGULATOR & TUNER ..........................................174
SCH35_7CH_AMP_1............................................................175
SCH36_7CH_AMP_2............................................................176
SCH37_2CH_AMP................................................................177
SCH38_FRONT ....................................................................178
SCH39_HDAM1 ....................................................................179
SCH40_HDAM2 ....................................................................180
SCH41_SMPS ......................................................................181
EXPLODED VIEW .................................................................182
PACKING VIEW .....................................................................183
SEMICONDUCTORS .............................................................184
1. IC's ...................................................................................184
2. FL DISPLAY .....................................................................207
2
CONTENTS

Jump to the target of a schematic
diagram connector
Click the Ref. No. of the target connector in the red
box around a schematic diagram connector.
•The screen jumps to the target connector.
•Pagemagnicationstaysthesameasbeforethe
jump.
CP401
CP106
v
ABOUT THIS MANUAL
Read the following information before using the service manual.
What you can do with this manual
Search for a Ref. No. (phrase)
(Ctrl+Shift+F)
You can use the search function in Acrobat Reader
to search for a Ref. No. in schematic diagrams, block
diagrams, and parts lists.
1.Press Ctrl+Shift+Fonthekeyboard.
• The Search window appears.
2.EntertheRef.No.youwanttosearchforinthe
Search window, and then click the Search button.
•A list of search results appears.
3.Click an item on the list.
• The screen jumps to the page for that item, and the
searchphraseisdisplayed.
Ctrl
Shift
F
3

Using Adobe Reader (Windows version)
• Properties
Click this button and check that the printer is set to a
suitable paper size.
• Page to print
Select the following checkbox.
"More Options" : "Current View"
• Page Sizing & Handling
Select the following checkbox.
"Size" / "Size Options" : "Fit"
Add notes to this data (Sign)
TheSignfunctionletsyouaddnotestothedatain
this manual.
Savetheleonceyouhavenishedaddingnotes.
[Example using Adobe Reader X]
On the "View" menu, click "Sign".
• The Sign pane appears.
[Example using Adobe Reader 9]
On the "Document" menu, click "Sign".
Magnify schematic / printed wiring
board diagrams - 1
(Ctrl+Space, mouse operation)
Press Ctrl+Spaceonthekeyboardanddragthe
mousetoselecttheareayouwanttoview.
• Theselectedareaismagnied.
• Whenyouwanttomovetheareashown,hold
down Space and drag the mouse.
• Whenyouwanttoshowafullpageview,press
Ctrl+0onthekeyboard.
Ctrl Space
0
Print a magnied part of the manual
ThePropertiesdialogboxandfunctionswillvarydependingonyourprinter.
1. Dragthemousetomagnifythepartyouwanttoprint.
2. On the "File" menu, click "Print".
3. CongurethefollowingsettingsinthePrintdialogbox.
4. Click the Print button to start printing.
4

Magnify schematic / printed wiring
board diagrams - 2
(Pan & Zoom function)
ThePan&Zoomfunctionletsyouseewhichpartof
amagnieddiagramisbeingshowninaseparate
window.
[Example using Adobe Reader X]
On the "View" menu, point to "Zoom", and then click
"Pan & Zoom".
• The Pan & Zoom window appears on the screen.
[Example using Adobe Reader 9]
On the "Tools" menu, point to "Select & Zoom", and
then click "Pan & Zoom Window".
Magnify schematic / printed wiring
board diagrams - 3
(Loupe Tool function)
TheLoupeToolfunctionletsyoumagnifyaspecic
part of a diagram in a separate window.
[Example using Adobe Reader X]
On the "View" menu, point to "Zoom", and then click
"Loupe Tool".
• The Loupe Tool window appears on the screen.
[Example using Adobe Reader 9]
On the "Tools" menu, point to "Select & Zoom", and
then click "Loupe Tool Window".
5

SAFETY PRECAUTIONS
The following items should be checked for continued protection of the customer and the service technician.
leakage current check
Beforereturningthesettothecustomer,besuretocarryouteither(1)aleakagecurrentcheckor(2)alinetochassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the set is defective.
Be sure to test for leakage current with the AC plug in both polarities, in addition, when the set's power is in each state
(on,offandstandbymode),ifapplicable.
CAUTION Please heed the following cautions and instructions during servicing and
inspection.
◎Heed the cautions!
Cautions which are delicate in particular for servicing
are labeled on the cabinets, the parts and the chassis,
etc. Be sure to heed these cautions and the cautions
described in the handling instructions.
◎Cautions concerning electric shock!
(1) AnACvoltageisimpressedonthisset,soifyou
touch internal metal parts when the set is energized,
youmaygetanelectricshock.Avoidgettingan
electricshock,byusinganisolatingtransformer
and wearing gloves when servicing while the set is
energized,orbyunpluggingthepowercordwhen
replacing parts, for example.
(2) Therearehighvoltagepartsinside.Handlewith
extra care when the set is energized.
◎Caution concerning disassembly and
assembly!
Through great care is taken when parts were
manufacturedfromsheetmetal,theremaybeburrson
theedgesofparts.Theburrscouldcauseinjuryifngers
are moved across them in some rare cases. Wear gloves
toprotectyourhands.
◎Use only designated parts!
Theset'spartshavespecicsafetyproperties(re
resistance,voltageresistance,etc.).Besuretouseparts
which have the same properties for replacement. The
burrs have the same properties. In particular, for the
importantsafetypartsthatareindicatedbythezmark
on schematic diagrams and parts lists, be sure to use
the designated parts.
◎Be sure to mount parts and arrange the wires
as they were originally placed!
Forsafetyseasons,somepartsusetapes,tubesorother
insulatingmaterials,andsomepartsaremountedaway
from the surface of printed circuit boards. Care is also
takenwiththepositionsofthewiresbyarrangingthem
andusingclampstokeepthemawayfromheatingand
highvoltageparts,sobesuretoseteverythingbackas
itwasoriginallyplaced.
◎Make a safety check after servicing!
Check that all screws, parts and wires removed or
disconnected when servicing have been put back in their
original positions, check that no serviced parts have
deteriorate the area around. Then make an insulation
check on the external metal connectors and between
the blades of the power plug, and otherwise check that
safetyisensured.
(Insulationcheckprocedure)
Unplug the power cord from the power outlet, disconnect
the antenna, plugs, etc., and on the power. Using a 500V
insulation resistance tester, check that the insulation
resistancevaluebetweentheinplugandtheexternally
exposedmetalparts(antennaterminal,headphones
terminal,inputterminal,etc.)is1MΩorgreater.Ifitis
less, the set must be inspected and repaired.
Manyoftheelectricandthestructuralpartsusedinthe
sethavespecialsafetyproperties.Inmostcasesthese
propertiesaredifculttodistinguishbysight,andtheuse
ofreplacementpartswithhigherratings(ratedpower
andwithstandvoltage)doesnotnecessarilyguarantee
thatsafetyperformancewillbepreserved.Partswith
safetypropertiesareindicatedasshownbelowonthe
wiring diagrams and the parts list in this service manual.
Be sure to replace them with the parts which have the
designated part number.
(1) Schematicdiagrams.......Indicatedbythez mark.
(2) Partslists.......Indicatedbythezmark.
The use of parts other than the
designated parts could cause electric
shocks,resorotherdangerous
situations.
CAUTION Concerning important
safety parts
6

NOTE FOR PARTS LIST
1.Partsindicatedby"nsp" on this table cannot be supplied.
2.Whenorderingapart,makeacleardistinctionbetween"1"and"I"(i)toavoidmis-supplying.
3.Apartorderedwithoutspecifyingitspartnumbercannotbesupplied.
4.Partindicatedby" ★" mark is not illustrated in the exploded view.
WARNING:Partsindicatedbythezmarkhavecriticalcharacteristics.UseONLYreplacementpartsrecommendedbythemanufacturer.
NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Partsindicatedbythezmarkhavecriticalcharacteristics.UseONLYreplacementpartsrecommendedbythemanufacturer.
CAUTION:
Beforereturningthesettothecustomer,besuretocarryouteither(1)aleakagecurrentcheckor(2)alinetochassisresistancecheck.If
the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the set
is defective.
WARNING:
DONOTreturnthesettothecustomerunlesstheproblemisidentiedandremedied.
NOTICE:
ALLRESISTANCEVALUESINOHM.k=1,000OHM/M=1,000,000OHM
ALLCAPACITANCEVALUESAREEXPRESSEDINMICROFARAD,UNLESSOTHERWISEINDICATED.PINDICATESMICRO-MICRO
FARAD.EACHVOLTAGEANDCURRENTAREMEASUREDATNOSIGNALINPUTCONDITION.CIRCUITANDPARTSARESUBJECT
TOCHANGEWITHOUTPRIORNOTICE.
INSTRUCTIONS FOR HANDLING SEMI-CONDUCTORS AND OPTICAL UNIT
Electrostaticbreakdownofthesemi-conductorsoropticalpickupmayoccurduetoapotentialdifferencecausedby
electrostatic charge during unpacking or repair work.
1. GroundforHumanBody
Besuretowearagroundingband(1MΩ)thatisproperlygroundedtoremoveanystaticelectricitythatmaybe
chargedonthebody.
2. GroundforWorkbench
Besuretoplaceaconductivesheetorcopperplatewithpropergrounding(1MΩ)ontheworkbenchorothersurface,
wherethesemi-conductorsaretobeplaced.Becausethestaticelectricitychargeonclothingwillnotescapethrough
thebodygroundingband,becarefultoavoidcontactingsemi-conductorswithyourclothing
<Incorrect>
CBA
Grounding Band
Conductive Sheet or
Copper Plate
1MΩ
1MΩ
<Correct>
CBA
7

Personal notes:
8

nAudio section
• Power amplifier
Rated output:
Front:
125 W + 125 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.05 % T.H.D.)
165 W + 165 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)
Center:
125 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.05 % T.H.D.)
165 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)
Surround:
125 W + 125 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.05 % T.H.D.)
165 W + 165 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)
Surround back / Front height / Front wide:
125 W + 125 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.05 % T.H.D.)
165 W + 165 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)
Output connectors: 4 – 16 Ω/ohms
• Analog
Input sensitivity/Input impedance: 200 mV/47 kΩ/kohms
Frequency response: 10 Hz – 100 kHz — +1, –3 dB (DIRECT mode)
S/N : 100 dB (IHF–A weighted, DIRECT mode)
Distortion : 0.005 % (20 Hz – 20 kHz) (DIRECT mode)
Rated output : 1.2 V
• Digital
D/A output : Rated output — 2 V (at 0 dB playback)
Total harmonic distortion — 0.008 % (1 kHz, at 0 dB)
S/N ratio — 102 dB
Dynamic range — 100 dB
Digital input : Format — Digital audio interface
• Phono equalizer (PHONO input — MEDIA PLAYER OUT)
Input sensitivity : 2.5 mV
RIAA deviation : ±1 dB (20 Hz to 20 kHz)
S/N : 74 dB (A weighting, with 5 mV input)
Rated output : 150 mV
Distortion factor : 0.03 % (1 kHz, 3 V)
nVideo section
• Standard video connectors
Input/output level and impedance : 1 Vp-p, 75 Ω/ohms
Frequency response : 5 Hz – 10 MHz — 0, –3 dB
• Color component video connector
Input/output level
and impedance:
Y signal — 1 Vp-p, 75 Ω/ohms
PB / CB signal — 0.7 Vp-p, 75 Ω/ohms
PR / CR signal — 0.7 Vp-p, 75 Ω/ohms
Frequency response: 5 Hz – 60 MHz — 0, –3 dB
nTuner section
(Note: μV at 75 Ω/ohms, 0 dBf = 1 x 10–15 W)
Receiving Range : FM 87.5 MHz - 107.9 MHz(for U)
FM 87.5 MHz - 108.0 MHz(for N, K)
FM 76.0 MHz - 90.0 MHz(for F)
AM 520 kHz - 1710 kHz(for U)
AM 522 kHz - 1611 kHz(for N, K)
AM 522 kHz - 1629 kHz(for F)
Receiving Range : FM 1.5μV(14.8dBf)(for U)
FM 1.2μV(12.8dBf)(for N, K, F)
AM 20 μV(for U)
AM 18 μV(for N, K, F)
S/N (IHF–A weighted) : MONO ― 78 dB (for U)
MONO ― 70 dB (for N, K, F)
STEREO ― 68 dB (for U)
STEREO ― 67 dB (for N, K, F)
HD ― 85 dB (for U)
Distortion (1 kHz) : MONO ― 0.1 % (for U)
MONO ― 0.7 % (for N, K, F)
SRETEO ― 0.2 % (for U)
SRETEO ― 1.0 % (for N, K, F)
HD ― 0.02 % (for U)
nWireless LAN section
Network type
(wireless LAN standard): Conforming to Wi-Fi®z1
Security : WEP 64 bit, WEP 128 bit
WPA/WPA2-PSK (AES)
WPA/WPA2-PSK (TKIP)
Radio frequency : 2.4 GHz
No. of channels : 1 - 11 ch (for U)
1 - 13 ch (for N, K, F)
z1 The Wi-Fi® CERTIFIED Logo and the Wi-Fi CERTIFIED On-
Product Logo are registered trademarks of the Wi-Fi Alliance.
nBluetooth section
Communications system : Bluetooth Version 2.1 + EDR
(Enhanced Data Rate)
Transmission power : Maximum 2.5 mW (Class 2)
Maximum communication range : Approx. 32.8 ft/10 m in line of sight
Frequency band : 2.4 GHz band
Modulation scheme : FHSS (Frequency-Hopping Spread Spectrum)
Supported proles : A2DP 1.2 (Advanced Audio Distribution Prole)
AVRCP 1.4 (Audio Video Remote Control Prole)
Corresponding codec : SBC, AAC
Transmission range (A2DP) : 20 Hz - 20,000 Hz
nGeneral
Power suppl : (for U) : AC 120 V, 60 Hz
(for N) : AC 230 V, 50 Hz / 60Hz
(for K) : AC 220 V, 50 Hz
(for F) : AC 100V, 50/60Hz
Power consumption: 710 W
Power consumption in standby mode: 0.2 W
Power consumption in CEC standby mode:0.5 W
Power consumption in network standby mode: 2.7 W
For purposes of improvement, specications and design are subject to
change without notice.
TECHNICAL SPECIFICATIONS
9

o
Dimensions (Unit : in. (mm))
.
17 21/64 (440)
10 33/64 (267)
2 3/32
(53)
2 7/16
(62)
35/64
(14)
6 47/64 (171)
7 9/32 (185)
9 23/32 (247)
14 7/32 (361) 16 3/16 (411)
45/64
(18)
25/32
(20)
1 17/64
(32)
13 25/64 (340)
2 23/64
(60)
1 31/32 (50) 1 31/32 (50)
oWeight: 30 lbs 7oz (13.8 kg)
Contents Connections Playback Settings Tips Appendix
335
Front panel Display Rear panel Remote Index
DIMENSION
Unit : in. (mm)
Weight : Weight: 30 lbs 7oz (13.8 kg)
10

Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed when the μcom, peripheral parts of μcom, and Digital
PCB. were replaced.
1. Turn off the power pressing Xbutton.
2. Press X button while simultaneously while pressing "MOVIE" and "MUSIC" buttons.
3. Check that the entire display is ashing at intervals of about 1 second, and then release the 2 buttons.
The microprocessor will be initialized.
Service Jig
When you repair the printing board, you can use the following JIG (Extension cable kit).
Please order it from Marantz Ofcial Service Distributor in your region if necessary.
8U- 110084S : EXTENSION UNIT KIT : 1 Set
8U- 110136S : EXTENSION UNIT KIT : 1 Set
(Refer to 80 page.)
NOTE: • If step 3 fails, start over from step 1.
• All user settings will be lost and the factory setting will be recovered after the set is initialized.
So make sure to note down your setting beforehand for restoring after the initialization.
MOVIE
X
MUSIC
CAUTION IN SERVICING
11

DISASSEMBLY
• Removeeachpartintheorderofthearrowsbelow.
• Reassembleremovedpartsinthereverseorder.
• Read"Precautions During Work"beforereassemblingremovedparts.
• Ifwirebundlesareremovedormovedduringadjustmentorpartreplacement,reshapethewiresaftercompleting
thework.Failuretoshapethewirescorrectlymaycauseproblemssuchasnoise.

FRONTPANELASSY
See"DISASSEMBLY"
1.FRONTPANELASSY
and"EXPLODED VIEW"
FRONT PCB
(Ref.No.ofEXPLODEDVIEW:C5)
HEAD PHONE PCB
(Ref.No.ofEXPLODEDVIEW:C2)
FRONT HDMI PCB
(Ref.No.ofEXPLODEDVIEW:C3)
DOOR SW PCB
(Ref.No.ofEXPLODEDVIEW:C1)
GUIDE FFC PCB
(Ref.No.ofEXPLODEDVIEW:C7)
TOPCOVER
MAINTRANS
See"DISASSEMBLY"
8.MAINTRANS
and"EXPLODED VIEW"
MAIN TRANS
(Ref.No.ofEXPLODEDVIEW:C30)
RADIATORASSY
See"DISASSEMBLY"
2.RADIATORASSY
and"EXPLODED VIEW"
GUIDE L / R PCB
(Ref.No.ofEXPLODEDVIEW:C12/C13)
AMP PCB
(Ref.No.ofEXPLODEDVIEW:C12)
GUIDE FFC PCB
(Ref.No.ofEXPLODEDVIEW:C14)
DIGITALPCBASSY
See"DISASSEMBLY"
3.DIGITALPCBASSY
and"EXPLODED VIEW"
DIGITAL PCB
(Ref.No.ofEXPLODEDVIEW:C49)
GUIDE PCB
(Ref.No.ofEXPLODEDVIEW:C48)
CX870 ADAPTER PCB
(Ref.No.ofEXPLODEDVIEW:C51)
CX870 MODULE ASSY
(Ref.No.ofEXPLODEDVIEW:C52)
VIDEOPCBASSY
See"DISASSEMBLY"
5.INPUTPCBASSY
and"EXPLODED VIEW"
INPUT PCB
(Ref.No.ofEXPLODEDVIEW:C39)
INPUTPCBASSY
See"DISASSEMBLY"
4.VIDEOPCBASSY
and"EXPLODED VIEW"
VIDEO PCB
(Ref.No.ofEXPLODEDVIEW:C46)
SPKPCBASSY
See"DISASSEMBLY"
6.SPKPCBASSY
and"EXPLODED VIEW"
SPK PCB
(Ref.No.ofEXPLODEDVIEW:C20)
SPK FH PCB
(Ref.No.ofEXPLODEDVIEW:C47)
FUSE PCB
(Ref.No.ofEXPLODEDVIEW:C17)
FRONT CNT PCB
(Ref.No.ofEXPLODEDVIEW:C18)
SIDE CNT PCB
(Ref.No.ofEXPLODEDVIEW:C19)
SMPSPCB
See"DISASSEMBLY"
7.SMPSPCB
and"EXPLODED VIEW"
SMPS PCB
(Ref.No.ofEXPLODEDVIEW:C31)
12

Explanatory Photos for DISASSEMBLY
• The angles from which the photos are taken are shown by "Photo angle：A, B, C, D".
• See the diagram below about the shooting direction of each photograph.
• Photographs with no shooting direction indicated were taken from the top of the unit.
• The photograph is SR7009U1B model.
The viewpoint of each photograph
(Shooting direction:X)［View from the top］
Front side
Shooting
direction: D
Shooting
direction: C
↑Shooting direction: A↑
↓Shooting direction: B↓
CX870 Model
CY920 Model
d
13

1. FRONT PANEL ASSY
Proceeding : TOP COVER →FRONT PANEL ASSY
(1) Removethescrews.
(2) Cutthewireclamp,thenremovetheconnectorwiresandFFC.Removethescrews.
View from the bottom
Front side
CY920 Model
CX870 Model
FFC
FFC
CN915
CN916
CN602
FFC
FFC
CN321
STYLE PIN CUT
CUT
CUT
CUT
CUT
STYLE PIN
CUT
d
14

2. RADIATOR ASSY
Proceeding : TOP COVER →FRONT PANEL ASSY →RADIATOR ASSY
(1) Removethescrews.
(2) Cutthewireclamp.Removethescrews.
(3) Cutthewireclamp,thenremovetheconnectorwires.
View from the bottom
CN703
CN461
CN704
CN702
CN701
15

3. DIGITAL PCB
Proceeding : TOP COVER →BACK CHASSIS →DIGITAL PCB
(1) Removethescrews.RemovetheNutandWasherformtheantennaconnector.
(2) Cutthewireclamp,thenremovetheconnectorwiresandFFC.
(3) Removetheconnector.
CY920 Model
CX870 Model
FFC
CN903
FFC
CN914
CN916
CON1
CON2
CN704
CON1
CON2
CN321
CX870 ONLY
STYLE PIN
STYLE PIN
CUT
CUT
ANT.
CUT
STYLE PIN
Front side
BN24A BN25A BN21ABN26A
BN23A
BN27A
d
16

4. VIDEO PCB
Proceeding : TOP COVER →BACK CHASSIS →DIGITAL PCB →SIDE CONNECT PCB →VIDEO PCB
(1) RemovetheFFCandthescrew.
(2) RemovetheconnectorandremovethesideconnectPCB.
5. INPUT and HDAM PCB
Proceeding : TOP COVER →BACK CHASSIS →DIGITAL PCB →VIDEO PCB →INPUT and HDAMPCB
(1) Removetheconnector.
FFC
BN21B
BN28B
BN27B
SIDE CONNECT PCB
CUT
PCB HOLDER
BN24C BN26C
BN64C
BN23C
CN706
From AMP PCB
CN481
HDAM
17

6. SPK PCB
Proceeding : TOP COVER →BACK CHASSIS →DIGITAL PCB →SIDE CONNECT PCB →VIDEO PCB →
INPUT and HDAM PCB →FRONT CONNECT and FUSE PCB →SPK PCB
(1) Removethescrews.
(2) Removetheconnectorwire.
(3) Removetheconnectorwire.Removethescrews.ThenremovethefrontconnectorPCBandthefusePCB.
View from the bottom
CN703 CN704
CN702
CN701
BN932
CN940
CN941
BN933
CN25D
18

(4) Removetheconnectorwire.Removethescrews.
7. SMPS PCB
Proceeding : TOP COVER →BACK CHASSIS →DIGITAL PCB →SMPS PCB
See"EXPLODEDVIEW"forinstructionsonhowtoremoveeachPCBofthe"SMPS PCB".
8. TRANS POWER
Proceeding : TOP COVER →BACK CHASSIS →DIGITAL PCB →TRANS POWER
See"EXPLODEDVIEW"forinstructionsonhowtoremoveeachPCBofthe"TRANS POWER".
CN971
CUT
19

Special Mode Conguration Buttons
b No. 1 -12, 15 : Hold down buttons"A", "B" and "C" at the same time and press the power button to turn on the power.
b No. 13, 14 : Hold down buttons "A" and "B" for at least 3 seconds while the power is on.
b No. 16 ： Press the "A" and "B"buttons simultaneously while inserting the AC plug to turn the power on.
No. Mode Button A Button B Button C Contents
1Version Display
(u-COM / DSP Error Display) DIMMER STATUS -
Displays the version of rmware such as the main rmware or DSP,
etc. Errors that have occurred are displayed.
(See 21 page)
2
User Initialization Mode
(Settings for the Installer Setup are not
initialized.)
GAME A-DSX - Initializes backup data.
(Settings for the Installer Setup are not initialized.)
3
Factory Initialization Mode
(Initialization includes settings for the
Installer Setup.)
MOVIE MUSIC - Initializes backup data.
(Initialization includes settings for the Installer Setup.)
4PANEL / REMOTE LOCK Selection Mode BACK ENTER -
Start this unit in the PANEL/REMOTE LOCK selection mode so that
PANEL LOCK and Remote Lock can be selected as ON or OFF.
(See 25 page)
5Check the Video/Audio pass
Mode
ZONE
SELECT BACK -
This is a special mode for service conrmation used during repair
work to simplify the conrmation work for the Audio channel/
video channel. (See 28 page)
6Protection History Display Mode ↑ ↑ - Displays the protection occurrence history.
(See 75 page)
7232C Standby Clear Mode : ↑ ↑ - Switches from 232C standby mode to normal standby mode.
(See 76 page)
8Operation Info Mode ↑ ↑ -
Displays the total operating time of the set, number of times the
power was switched on, and number of occurrences of each pro-
tection.(See 77 page)
9TUNER STEP mode
(N model only) ↑ ↑ - Enables reception STEP of the ANALOG TUNER to be changed. (See 78 page) For N, U(without HD Radio) Region.
11 Installer Setup Mode CURSOR
0BACK -
Access the Remote Maintenance mode via the internet. Installer
Setup is displayed on Setup menu / Network.
b Refer to AVR_RemoteMaintenance_.pdf of SDI.
12 Protection Pass Mode M-DAX DYNAMIC
EQ
DYNAMIC
VOL
Enables the power to be turned on when protection detection is in
the stopped state.
(See 78 page)
13 CX870 / CY920 Initialization mode BACK ENTER -
Enter this mode only after replacing Flash for CX870 / CY920 and
rewriting the rmware.
(See 79 page)
14 CX870 / CY920 Reboot mode M-DAX DYNAMIC
EQ - Reboot the CX870 / CY920. (See79 page)
15 USB Update Mode HDMI OUT STATUS Switches this unit to USB Update mode.
(See 83 page)
16 Forced USB All Device Write Mode HDMI OUT STATUS -
Mode used when this unit cannot be recovered.
Forcibly switches this unit to USB update mode.
(See 86 page)
NOTE:
When the volume indicator displays " ", the set has entered a special mode for developers.
In this case, RS-232C communication cannot be used.
To cancel this special mode, press and hold the "CURSOR f"and "STATUS" buttons for 3 seconds and longer. When the volume indica-
tor returns to the normal display, RS-232C communication can be used.
ENTER
ZONE2
SELECT
GAME
CursorDIMMER
MOVIE
BACK
A-DSX
STATUS
MUSIC
X
HDMI
OUT
DYNAMIC EQDYNAMIC VOL
M-DAX
SPECIAL MODE
20