Marantz AV8802/U1B User manual

AV Pre Tuner
AV8802 /U1B/N1B/FB
AV8802A /U1B/N1B/K1B/FB
AV8802 / AV8802A Ver. 8
S0044V08DM/DG1709
Copyright 2017-2014 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
•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 ...............................................................................9
Precautions During Service...................................................10
Initializing This Unit .................................................................10
Service Jigs.............................................................................10
DISASSEMBLY........................................................................11
1. CX870 ASSY for CX870 model only ..................................14
2. FRONT PANEL ASSY ........................................................14
3. HDAM ASSY ......................................................................15
4. SMPS ASSY.......................................................................15
5. POWER TRANS ................................................................16
6. BACK PANEL ASSY...........................................................17
SPECIAL MODE ......................................................................18
Special Mode Conguration Buttons.......................................18
1. Version Display Mode ........................................................19
2. PANEL / REMOTE LOCK Selection Mode.........................23
3. Selection Modes for Service-related Operations................24
DIAGNOSTIC PATH DIAGRAM.........................................29
4. Additional Source mode.....................................................70
5. CX870 / CY920 Reboot Mode............................................71
6. CX870 / CY920 Initialization Mode ....................................71
JIG FOR SERVICING ..............................................................72
Procedure after Replacing the Microprocessor, etc. ..........74
Firmware Update Procedure..................................................74
1. Updating by USB................................................................74
2. Updating by DPMS.............................................................84
SURROUND MODES AND PARAMETERS............................91
TROUBLE SHOOTING............................................................94
1. POWER..............................................................................94
2. Analog video ......................................................................95
3. HDMI/DVI ...........................................................................97
4. AUDIO................................................................................99
5. Network/Bluetooth/USB ...................................................101
6. SMPS ...............................................................................107
Audio Check PASS ..............................................................109
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK ...........110
LEVEL DIAGRAM.................................................................. 111
GND DIAGRAM .....................................................................119
POWER DIAGRAM................................................................120
CPU DIAGRAM......................................................................122
PRINTED WIRING BOARDS.................................................123
SCHEMATIC DIAGRAMS (1/38) ...........................................133
SCH01_DIGITAL CONNECT ................................................133
SCH02_DIR ADC ZONEDAC ...............................................134
SCH03_AUDIO PLD .............................................................135
SCH04_DSP1 .......................................................................136
SCH05_DSP2 .......................................................................137
SCH06_DSP3 .......................................................................138
SCH07_DSP4 .......................................................................139
SCH08-1_MAIN CPU_OLD ..................................................140
SCH08-2_MAIN CPU_NEW .................................................141
SCH09_SUB CPU.................................................................142
SCH10_DECODER...............................................................143
SCH11-1_HDMI SW1 AV8802 ONLY....................................144
SCH11-2_HDMI SW1 AV8802A ONLY..................................145
SCH12-1_HDMI SW2 AV8802 ONLY....................................146
SCH12-2_HDMI SW2 AV8802A ONLY .................................147
SCH13_IP SCALER..............................................................148
SCH14_IP SCALER DDR .....................................................149
SCH15-1_VIDEO PLD AV8802 ONLY ..................................150
SCH15-2_VIDEO PLD AV8802A ONLY ................................151
SCH16-1_HDMI RX TX AV8802 ONLY.................................152
SCH16-2_HDMI RX TX AV8802A ONLY...............................153
SCH17-1_HDMI SUPPLY AV8802 ONLY..............................154
SCH17-2_HDMI SUPPLY AV8802A ONLY ...........................155
SCH18-1_NETWOR AV8802 ONLY......................................156
SCH18-2_NETWOR AV8802A ONLY_OLD ..........................157
SCH18-3_NETWOR AV8802A ONLY_NEW .........................158
SCH19-1_MAIN DAC............................................................159
SCH19-2_MAIN DAC............................................................160
SCH20-1_ZONEDAC ADC ...................................................161
SCH20-2_ZONEDAC ADC ...................................................162
SCH21_REAR USB ..............................................................163
SCH22_AUDIO VIDEO CONNECT ......................................164
SCH23_AUDIO VOLUME .....................................................165
SCH24_PREOUT..................................................................166
SCH25_VIDEO SELECTOR .................................................167
SCH26_CONNECT...............................................................168
SCH27_HDAM XLR-AMP .....................................................169
SCH28_XLR IN_REMOTE IO_232C ....................................170
SCH29_FRONT HDMI_USB.................................................171
SCH30_FRONT ....................................................................172
SCH31_HDAM CONNECT ...................................................173
SCH32_PHONO ...................................................................174
SCH33_SMPS ......................................................................175
SCH34_XLR OUT1 ...............................................................176
SCH35_XLR OUT2 ...............................................................177
SCH36_XLR OUT3 ...............................................................178
SCH37_CX870 CONNECT AV8802 ONLY ...........................179
SCH38_BT MODULE AV8802 ONLY....................................180
EXPLODED VIEW .................................................................181
PACKING VIEW .....................................................................182
SEMICONDUCTORS .............................................................183
1. IC's ...................................................................................183
2. FL DISPLAY .....................................................................205
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, printed
wiring circuit 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 circuit
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 circuit
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 circuit
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 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.
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.
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

TECHNICAL SPECIFICATIONS
nAudio section
• Analog
Input sensitivity： Unbalanced RCA input：200 mV/47 kΩ
/Input impedance Balanced XLR input：400 mV/94 kΩ
Frequency response： 10 Hz - 100 kHz — +1, –3 dB(Direct mode)
S/N：  105 dB(IHF-A weighted, Direct mode)
Distortion： 0.005 % (20 Hz – 20 kHz) (Direct mode)
Rated output： Unbalanced RCA pre-output : 1.2 V
Balanced XLR pre-output: 2.4 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
Input sensitivity： 2.5 mV
RIAA deviation：±1 dB (20 Hz to 20 kHz)
S/N：74 dB (IHF-A, 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
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
PB / CB signal — 0.7 Vp-p, 75 Ω
PR / CR signal — 0.7 Vp-p, 75 Ω
Frequency response：5 Hz - 60 MHz — 0, –3 dB
nTuner section
Reception frequency range： F M 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 530 kHz - 1710 kHz (for U)
AM 522 kHz - 1611 kHz (for N, K)
AM 522 kHz - 1629 kHz (for F)
Effective sensitivity：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)
50 dB sensitivity： MONO ― 2.8 μV (20.2 dBf) (for N, K, F)
S/N ratio (IHF-A)： 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 ― FM 85dB AM 85dB (for U)
Distortion (1 kHz)： MONO ― 0.1 % (for U)
MONO ― 0.7 % (1 kHz) (for N, K, F)
SRETEO ― 0.2 % (for U)
SRETEO ― 1.0 % (1 kHz) (for N, K, F)
HD ― FM 0.02% AM 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)
z1The 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 (Advanced Audio Distribution Prole) 1.2
AVRCP (Audio Video Remote Control Prole) 1.4
Corresponding codec：SBC, AAC
Transmission range (A2DP)：20 Hz - 20,000 Hz
nGeneral
Power supply：(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 100 V, 50 Hz / 60Hz
Power consumption：90W
Power consumption in standby mode：0.2W
Power consumption in CEC standby mode：0.5W
Power consumption in network standby mode ：4.5W
(AdaptedtoNEWDIGITALPCBproducts)  ：2.7W
For purposes of improvement, specications and design are subject to
change without notice.
DIMENSION
Unit：mm
Weight：29lb16oz(13.6kg)
32
50
55 39 11
171 185
248
361 410
17
267 389
17
50 340
14
440
56
h
9

PRECAUTIONS DURING SERVICE
Initializing This Unit
Initialize this unit if you have replaced the microcomputer, one of the parts around the microcomputer, or the digital PCB.
1. Press the power button to turn off the power.
2. Hold down buttons "MOVIE" and "MUSIC" at the same time and press the power button to turn on the power.
3. Release the buttons after conrming that the display ashes in intervals of approximately 1 second.
＊The unit is initialized.
NOTE：•Ifthestatusinstep3doesnotoccur,startagainfromstep1.
•Initializingthedevicerestoressettingsconguredbytheusertothefactorysettings.Takenoteofyoursettingsbeforehand
andrecongurethemafterinitialization.
Service Jigs
The following jigs (extension cable kit) are used when repairing the PCBs.
Order the jigs from your dealer if necessary.
8U- 110084S : EXTENSION UNIT KIT : 2 Set
(See 72 page)
XMUSIC
MOVIE
10

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"
2.FRONTPANELASSY
and"EXPLODED VIEW"
PCB FRONT
(Ref.No.ofEXPLODEDVIEW：A1)
PCB SOURCE
(Ref.No.ofEXPLODEDVIEW：A2)
PCB VOL
(Ref.No.ofEXPLODEDVIEW：A3)
PCB H/P
(Ref.No.ofEXPLODEDVIEW：A5)
PCB DOOR SW
(Ref.No.ofEXPLODEDVIEW：A7)
PCB FRONT HDMI USB
(Ref.No.ofEXPLODEDVIEW：C4)
PCB BT MODULE
(Ref.No.ofEXPLODEDVIEW：G2)
CX870ASSY
See"DISASSEMBLY"
1.CX870ASSY
and"EXPLODED VIEW"
PCB CX870 CONNECT
(Ref.No.ofEXPLODEDVIEW：G1)
CX870 MODULE
(Ref.No.ofEXPLODEDVIEW：73)
TOPCOVER
POWERTRANS
See"DISASSEMBLY"
5.POWERTRANS
and"EXPLODED VIEW"
POWER TRANS
(Ref.No.ofEXPLODEDVIEW：15)
HDAMASSY
See"DISASSEMBLY"
3.HDAMASSY
and"EXPLODED VIEW"
PCB HDAM CONNECT
(Ref.No.ofEXPLODEDVIEW：A6)
PCB HDAM XLR-AMP
(Ref.No.ofEXPLODEDVIEW：C1)
BACKPANELASSY
See"DISASSEMBLY"
6.BACKPANELASSY
and"EXPLODED VIEW"
PCB PHONO
(Ref.No.ofEXPLODEDVIEW：A4)
PCB XLR OUT
(Ref.No.ofEXPLODEDVIEW：
B1,B2,B3,B4,B5)
PCB XLR IN_TEMOTE IO_232C
(Ref.No.ofEXPLODEDVIEW：C2)
PCB CONNECTR-3
(Ref.No.ofEXPLODEDVIEW：C3)
PCB AUDIO VIDEO
(Ref.No.ofEXPLODEDVIEW：D1)
PCB CONNECT-1
(Ref.No.ofEXPLODEDVIEW：D3)
PCB CONNECT-2
(Ref.No.ofEXPLODEDVIEW：D4)
PCB CONNECT-4
(Ref.No.ofEXPLODEDVIEW：D8)
PCB CONNECT-5
(Ref.No.ofEXPLODEDVIEW：D9)
PCB DAC
(Ref.No.ofEXPLODEDVIEW：E1)
PCB DIGITAL
(Ref.No.ofEXPLODEDVIEW：F)
SMPSPCB
See"DISASSEMBLY"
4.SMPSPCB
and"EXPLODED VIEW"
PCB SMPS
(Ref.No.ofEXPLODEDVIEW：B6)
11

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 AV8802U model.
The viewpoint of each photograph for AV8802 D
(Shooting direction:X)[View from the top] s
Front side
Shooting
direction: D
Shooting
direction: C
↑Shooting direction: A↑
↓Shooting direction: B↓
Green wire 13
White wire 14
Black wire 15
1
12

The viewpoint of each photograph for AV8802A D
(Shooting direction:X)[View from the top]
Front side
Shooting
direction: D
Shooting
direction: C
↑Shooting direction: A↑
↓Shooting direction: B↓
13

1. CX870 ASSY for CX870 model only
Proceeding : TOP COVER L/R/CENTER →CX870 ASSY
(1) Remove the screws. Remove the connector wire. s
2. FRONT PANEL ASSY
Proceeding : TOP COVER L/R/CENTER →FRONT PANEL ASSY
(1) Remove the screws.
(2) Cut the wire clamp, then remove the ALUMINUM TAPE, STYLE PIN, FFC and connector wire. Remove the screws.
(3) Disassemble the FRONT PANEL ASSY. Remove the STYLE PIN and connector wire.
x2
CON1
CON2
N903
N901
CUT
CUT
STYLE PIN
View from the bottom
x12
Shooting direction: C Shooting direction: D
FFC
FFC
N5009
ALUMINUM TAPE
CUT
STYLE PIN
AV8802 ONLY
N1 N5506
N1001
STYLE PIN
AV8802 ONLY
h
63301020220AS
2
R3424
R3428
R623
R624
C3484
C3485
C3486
R649
C2110
R650
C2114
C2117
R658
R659
C2121
R660
C2124
R661
C626
C627
C2128
C632
R670
R671
C637
C638
C639
R677
R678
C644
L2003
R684 R685
C649
C650
C651
C654
R691
L2011
R692
L2012
R693
C657
R694
C659
C661
C5041
C662
C663
D605
D606
C668
C673
R727
TOP
1
25
TOP
25
N3403
C2061
C2064
C2068
L604
L606
L608
L610
R3415
R3416
2
DIGITAL PCB
8U-210202-4
HDMI/USB FRONT
without FLANGE
K5501
N5559
N5560
N5561
D5559
R5559
D5560
D5561
U5501
TOP
1
25
TOP
1
25
N5501
L5559
L5560
C5501
C5502
C5503
C5504
C5505
Q5501
C5506
Q5502
C5507
C5508
C5509
C5510 C5511
C5512
C5513
C5514C5515
C5516
C5517
C5518
C5519
C5520
D5501
D5502
R5501
R5502
R5503
R5504
R5505
R5506
R5507
R5508
R5509
R5510
R5511
R5512
R5513
R5514
R5515
R5516
R5517
R5518
R5519
C5559
C5560
C5561
C5564
2
FRONT HDMI USB PCB
NewFRONTHDMIUSBPCBONLY
Pleasebecarefulasthereisinsertiondirection
14

3. HDAM ASSY
Proceeding : TOP COVER →HDAM ASSY
(1) Remove the screws. Remove the connector wire.
4. SMPS ASSY
Proceeding : TOP COVER →CX870 ASSY →SMPS ASSY
(1) Remove the screws. Cut the wire clamp, then remove the connector wire.
x6
N101
N121
N103
N120
N104
N102 N105
N119
Shooting
direction: C
↑Shooting direction: A↑
CUT
N6501
15

5. POWER TRANS
Proceeding : TOP COVER →SMPS ASSY →POWER TRANS
(1) Remove the screws. Cut the wire clamp, then remove the connector wire.
x4
CUT
TO FRONT
N1001
TO SMPS
N6501
TO XLR OUT
N5202
16

6. BACK PANEL ASSY
Proceeding : TOP COVER →HDAM ASSY →SMPS ASSY →BACK PANEL ASSY
(1) Remove the screws.
Shooting direction: D
Shooting direction: A
x7
17

SPECIAL MODE
Special Mode Conguration Buttons
b No.1-10,13: Holddownbuttons"A","B"and"C"atthesametimeandpressthepowerbuttontoturnonthepower.
b No.11,12:  Holddownbuttons"A"and"B"foratleast3secondswhilethepowerison.
b No.14：  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Mode
(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19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23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24page)
6232CStandbyClearMode ↑ ↑ - Switchesfrom232Cstandbymodetonormalstandbymode.
(See69page)
7OperationInfoMode ↑ ↑ -
Displaysthetotaloperatingtimeoftheset,numberoftimes
thepowerwasswitchedon,andnumberofoccurrencesofeach
protection.(See69page)
8TUNERSTEPMode
(Nmodelonly) ↑ ↑ - EnablesreceptionSTEPoftheANALOGTUNERtobechanged. (See70page)
9Installer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.
10 AdditionalSourceMode SLEEP A-DSX - AddsAUX3-7asaSource.
(See70page)
11 CX870/CY920RebootMode BACK ENTER - RestartsCX870/CY920.(See71page)
12 CX870/CY920InitializationMode M-DAX DYNAMIC
EQ -EnterthismodeonlyafterreplacingFlashforCX870/CY920and rewritingthermware.(See71page)
13 USBUpdateMode HDMI
OUT STATUS SwitchesthisunittoUSBUpdatemode. (See74page)
14 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77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 "DIMMER"and "STATUS" buttons for 3 seconds and longer. When the volume indicator
returns to the normal display, RS-232C communication can be used.
X
0
BACK ENTER
DYNAMIC
VOL
DYNAMIC
EQ M-DAX
DIMMER
STATUSZONE
SELECT
GAME
MUSIC
MOVIE HDMI OUT
A-DSX
18

1. Version Display Mode
1.1. Actions
Version information is displayed when the device is started in this mode.
1.2. Starting up
Hold down buttons "DIMMER" and "STATUS" at the same time and press the power button to turn on the power.
Press the "STATUS" button after this to show the information in section 1.3 on the display.
bA version list is also displayed on GUI while the version appears on the display.
1.3. Display Order
Error information(See "1.4. Error display") → qModel destination information, Serial Number
→ w Firmware Package Version → eMain µ-com, Main 1st Boot Loader Version
→ r Sub µ-com, Sub 1st Boot Loader Version → t DSP1/2/3/4 ROM → y Audio, Video PLD → uGUI SFLASH
→ i Ethernet 1st Boot Loader, Hardware ID → o Ethernet 2nd Boot Loader, Rhapsody Flag → Q0 Ethernet IMAGE
→ Q1 Ethernet MAC ADDRESS information → Q2 BT MAC ADDRESS information → Q3 HD Radio(U only)
→ Q4 MultEQ Pro APP (Displayed when Audyssey Pro is complete) → Q5 MultEQ Pro ICL (Displayed when Audyssey Pro
is complete)
qModel destination information, Serial Number :
FLD L1 A V 8 8 0 2 Z * CaseofCX870:Display"*"attheend

Z：Region(U,N,F)
FLD L1 A V 8 8 0 2 A Z AV8802AONLYd

Z：Region(U,N,F)
FLD L2 S/N. **********
wFirmware Package Version :
FLD L1 Firm. Package
L2 Ver.:****
eMain µ-com, Main 1st Boot Loader Version :
FLD L1 Main :**.***CaseofCX870:Display"*"attheend
L2 M a i n F B L : * * . * *
rSub µ-com, Sub 1st Boot Loader Version : Model code
FLD L1 Sub :2920**** AV8802ONLYd
FLD L1 Sub :4520**** AV8802AONLYd
FLD L2 S u b F B L : * * . * *
tDSP 1/2 ROM :
FLD L1 D S P 1 : * * . * *
L2 D S P 2 : * * . * *
DSP 3/4 ROM :
FLD L1 D S P 3 : * * . * *
L2 D S P 4 : * * . * *
yAudio, Video PLD :
FLD L1 Audio PLD:**.**
L2 Video PLD:**.**
19

uGUI SFLASH :
FLD L1 GUI :292Z****
L2
Z
：
Region code(U / N / F = 1, K = 5)
iEthernet 1st Boot Loader, Hardware ID :
FLD L1 Ethernet FBL
L2 ******-AA
AA : Hardware ID
oEthernet 2nd Boot Loader, Rhapsody Flag :
FLD L1 Ethernet SBL
L2 *************-BB
Q0 Ethernet IMAGE :
FLD L1 Ethernet IMG
L2 *************
Q1 Ethernet MAC ADDRESS information :
FLD L1 * N E T M A C A d d r e s s
L2 *******-*****
Q2 BT MAC ADDRESS information :
FLD L1 *BT MAC Address
L2 ******-*****S
Q3 HD Radio :
FLD L1 *HD :SSSSSSSS-
L2 RVVVV.BBB
S
: Software Conguration, R : Release Type, V : Base Version No., B : Build No.
Q4 MultEQ Pro APP :
FLD L1 * M u l t E Q P r o A P P
L2 **.**.**.****
Q5 MultEQ Pro ICL :
FLD L1 * M u l t E Q P r o I C L
L2 **.**.**.****
20