Marantz AV7701 User manual

Service
Manual
•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.
AV Pre Tuner
AV7701 /U1B,K1B
N1B
AV7701
S1019-V02DM/DG1506 Copyright 2015 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
Ver. 2
Please refer to the
MODIFICATION NOTICE.

2
CONTENTS
ABOUT THIS MANUAL.............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
SAFETY PRECAUTIONS ..........................................................7
NOTE FOR SCHEMATIC DIAGRAM.........................................8
TECHNICAL SPECIFICATIONS................................................9
DIMENSION ...............................................................................9
CAUTION IN SERVICING........................................................10
Initializing AV SURROUND RECEIVER..................................10
Service Jig ..............................................................................10
DISASSEMBLY........................................................................11
1. FRONT PANEL ASSY .........................................................12
2. HEAT SINK ASSY ...............................................................16
3. HDMI UNIT ASSY................................................................18
4. TRANS MAIN ......................................................................21
SPECIAL MODE ......................................................................22
Special mode setting button....................................................22
1. µcom/DSP Version display mode........................................23
2. PANEL/REMOTE LOCK Selection mode............................27
3. Service Related Selection mode .........................................28
4. DUAL BACKUP MEMORY ..................................................29
5.DIAGNOSTICMODE(Video/Audio(signal)pathconrmation
mode) ......................................................................................31
BLOCK DIAGRAM...................................................................36
JIG FOR SERVICING ..............................................................63
WHEN THE MICROPROCESSOR IS REPLACED WITH A
NEW ONE ................................................................................67
PROCEDURE FOR UPGRADING THE VERSION OF THE
FIRMWARE ..............................................................................67
1. How to update by DFW .......................................................67
2. How to update by DPMS.....................................................71
3. How to update by USB Memory..........................................78
SURROUND MODES AND PARAMETERS............................85
TROUBLE SHOOTING............................................................91
1. POWER...............................................................................91
2. Analog video........................................................................92
3. HDMI/DVI ............................................................................97
4. AUDIO ...............................................................................105
5. Network/USB.....................................................................107
6. SMPS ................................................................................110
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK ...........114
LEVEL DIAGRAM..................................................................115
WIRING DIAGRAM................................................................120
PRINTED WIRING BOARDS.................................................121
HDAM_AMP _1.....................................................................121
SMPS ...................................................................................122
HDAM_AMP _2.....................................................................123
HDAM_AMP _3.....................................................................123
FUSE ....................................................................................124
INPUT ...................................................................................125
FRONT .................................................................................127
GUIDE FRONT FFC .............................................................127
HP ........................................................................................129
DOOR DET ..........................................................................129
FRONT HDMI FFC ...............................................................129
GUIDE L ...............................................................................129
GUIDE R ..............................................................................129
FRONT HDMI FFC ...............................................................129
PREOUT ..............................................................................130
SIDE CNT .............................................................................131
FRONT CNT .........................................................................132
VIDEO ..................................................................................134
HDMI ....................................................................................136
FRONT HDMI .......................................................................136
SCHEMATIC DIAGRAMS (1/31) ...........................................138
FRONT UNIT.........................................................................138
SPK/PREOUT/REG UNIT (1/3).............................................139
SPK/PREOUT/REG UNIT (2/3).............................................140
SPK/PREOUT/REG UNIT (3/3).............................................141
CNT/RS232C UNIT (1/2).......................................................142
CNT/RS232C UNIT (2/2).......................................................143
INPUT UNIT ..........................................................................144
USB UNIT..............................................................................144
VIDEO UNIT (1/3) .................................................................145
VIDEO UNIT (2/3) .................................................................146
VIDEO UNIT (3/3) .................................................................147
DIGITAL UNIT (1/15).............................................................148
DIGITAL UNIT (2/15).............................................................149
DIGITAL UNIT (3/15).............................................................150
DIGITAL UNIT (4/15).............................................................151
DIGITAL UNIT (5/15).............................................................152
DIGITAL UNIT (6/15).............................................................153
DIGITAL UNIT (7/15).............................................................154
DIGITAL UNIT (8/15).............................................................155
DIGITAL UNIT (9/15).............................................................156
DIGITAL UNIT (10/15)...........................................................157
DIGITAL UNIT (11/15) ...........................................................158
DIGITAL UNIT (12/15)...........................................................159
DIGITAL UNIT (13/15)...........................................................160
DIGITAL UNIT (14/15)...........................................................161
DIGITAL UNIT (15/15)...........................................................162
SMPS UNIT...........................................................................163
HDAM/AMP UNIT (1/3) .........................................................164
HDAM/AMP UNIT (2/3) .........................................................165
HDAM/AMP UNIT (3/3) .........................................................166
BALANCE CONNCTOR & BALANCE OUT UNIT.................167
TO REGULATOR PART UNIT...............................................168
EXPLODED VIEW..................................................................169
PARTS LIST OF EXPLODED VIEW......................................171
PACKING VIEW .....................................................................174
PARTS LIST OF PACKING & ACCESSORIES.....................175
SEMICONDUCTORS .............................................................176
1. IC's ....................................................................................176
2. FL DISPLAY.......................................................................209
PARTS LIST OF PCB UNIT...................................................211
FRONT PCB UNIT ASS'Y .....................................................211
FRONT HDMI PCB UNIT ASS'Y...........................................215
SMPS PCB UNIT ASS'Y .......................................................216
INPUT PCB UNIT ASS'Y.......................................................219
VIDEO PCB UNIT ASS'Y ......................................................222
DIGITAL PCB UNIT ASS'Y....................................................237
PREOUT PCB UNIT ASS'Y...................................................250
CNT PCB UNIT ASS'Y ..........................................................252
H-DAM AMP PCB UNIT ASS'Y .............................................259
FUSE PCB UNIT ASS'Y........................................................264

3
ABOUT THIS MANUAL
Read the following information before using the service manual.
What you can do with this manual
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 magnification stays the same as before the
jump.
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 board diagrams, block diagrams, and parts lists.
1.Press Ctrl+Shift+Fon the keyboard.
• The Search window appears.
Ctrl
Shift
F
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.

4
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.
Ctrl Space
0
• 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+0on the keyboard.
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.

5
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 specific
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".

6
MARANTZ DESIGN AND SERVICE
Using superior design and selected high grade components, marantz company has created the ultimate in stereo sound.
Only original marantz parts can insure that your marantzproductwillcontinuetoperformtothespecicationsforwhichit
is famous.
Parts for your marantz equipment are generally available to our National Marantz Subsidiary or agent.
ORDERING PARTS :
PartscanbeorderedeitherbymailorbyFax..Inbothcases,thecorrectpartnumberhastobespecied.
The following information must be supplied to eliminate delays in processing your order :
1. Complete address
2. Complete part numbers and quantities required
3. Description of parts
4. Model number for which part is required
5. Way of shipment
6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.
Incaseofdifculties,donothesitatetocontacttheTechnical
Department at above mentioned address.
091105DM/DG
USA
MARANTZ AMERICA, INC
100 CORPORATE DRIVE
MAHWAH, NEW JERSEY 07430
USA
EUROPE / TRADING
D&M EUROPE B. V.
P. O. BOX 8744, BUILDING SILVERPOINT
BEEMDSTRAAT 11, 5653 MA EINDHOVEN
THE NETHERLANDS
PHONE : +31 - 40 - 2507844
FAX : +31 - 40 - 2507860
KOREA
D&M SALES AND MARKETING KOREA LTD.
2F,YEON BLDG.,
88-5, BANPO-DONG, SEOCHO-GU,
SEOUL KOREA
PHONE : +82 - 2 - 715 - 9041
FAX : +82 - 2 - 715 - 9040
CANADA
D&M Canada Inc.
5-505 APPLE CREEK BLVD.
MARKHAM, ONTARIO L3R 5B1
CANADA
PHONE : 905 - 415 - 9292
FAX : 905 - 475 - 4159
JAPAN
D&M BUILDING, 2-1 NISSHIN-CHO,
KAWASAKI-KU, KAWASAKI-SHI,
KANAGAWA, 210-8569 JAPAN
D&M Holdings Inc.
CHINA
D&M SALES AND MARKETING SHANGHAI LTD.
ROOM.808 SHANGHAI AIRPORT CITY TERMINAL
NO.1600 NANJING (WEST) ROAD, SHANGHAI,
CHINA. 200040
TEL : 021 - 6248 - 5151
FAX : 021 - 6248 - 4434
SHOCK, FIRE HAZARD SERVICE TEST :
CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary
AC cord connector pins (with unit NOT connected to AC mains and its Power switch ON), and the face or Front Panel of
product and controls and chassis bottom.
Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied,
andveriedbeforeitisreturntotheuser/customer.
Ref. UL Standard No. 60065.
NOTE ON SAFETY :
Symbol zFire or electrical shock hazard. Only original parts should be used to replaced any part marked with symbol z.
Anyothercomponentsubstitution(otherthanoriginaltype),mayincreaseriskofreorelectricalshockhazard.
安全上の注意：
zがついている部品は、安全上重要な部品です。必ず指定されている部品番号のものを使用してください。

7
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 z
mark 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

8
NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Parts indicated by the zmark 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
Parts indicated by "nsp" on this table cannot be supplied.
When ordering a part, make a clear distinction between "1" and "I" (i) to avoid mis-supplying.
A part ordered without specifying its part number can not be supplied.
General-purpose Carbon Chip Resistors are not included are not included in the P.W.Board parts list.
(Refer to the Schematic Diagram for those parts.)
Parts indicated by the zmark have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
General-purpose Carbon Film Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)
Part indicated by "★" mark is not illustrated in the exploded view.
WARNING:
1.
2.
3.
4.
5.
6.
●Resistors
RD : Carbon
RC : Composition
RS : Metal oxide film
RW: winding
RN : Metal film
RK : Metal mixture
P : Pulse-resistant type
NL : Low noise type
NB : Non-burning type
FR : Fuse-resistor
F : Lead wire forming
2B : 1/8 W
2E : 1/4 W
2H : 1/2 W
3A : 1 W
3D : 2 W
3F : 3 W
3H : 5 W
F : ±1%
G:±2%
J : ±5%
K : ±10%
M : ±20%
Ex.: RN
Type
14K
Shape
and per-
formance
2E
Power
182
Resist-
ance
G
Allowable
error
FR
Others
*Resistance
1800ohm=1.8kohm1 8 2
Indicates number of zeros after effective number.
2-digit effective number.
1.2ohm1 R 2
2-digit effective number, decimal point indicated by R.
1-digit effective number.
: Units: ohm
●Capacitors
CE : Aluminum foil
electrolytic
CA : Aluminium solid
electrolytic
CS : Tantalum electrolytic
CQ : Film
CK : Ceramic
CC : Ceramic
CP : Oil
CM: Mica
CF : Metallized
CH : Metallized
HS : High stability type
BP : Non-polar type
HR : Ripple-resistant type
DL : For change and discharge
HF : For assuring high frequency
U : UL part
C : CSA part
W : UL-CSA part
F : Lead wire forming
0J : 6.3 V
1A : 10 V
1C : 16 V
1E : 25 V
1V : 35 V
1H : 50 V
2A : 100 V
2B : 125 V
2C : 160 V
2D : 200 V
2E : 250 V
2H : 500 V
2J : 630 V
F : ±1%
G:±2%
J : ±5%
K : ±10%
M : ±20%
Z : ±80%
: - 20%
P : +100%
C : ±0.25pF
D : ±0.5pF
= : Others
Ex.: CE
Type
04W
Shape
and per-
formance
1H
Dielectric
strength
3R2
Capacity
M
Allowable
error
BP
Others
･Units:μF.
2200μF2 2 2
Indicates number of zeros after effective number.
2-digit effective number. ･Units:μF.
2.2μF2 R 2
2-digit effective number, decimal point indicated by R
1-digit effective number.
*Capacity (electrolyte only)
･When the dielectric strength is indicated in AC,"AC" is included after the dielectric strength value.
*Capacity (except electrolyte)
･Units:pF
2200pF=0.0022μF2 2 2
Indicates number of zeros after effective number. (More than 2)
2-digit effective number. ･Units:pF
220pF2 2 1
2-digit effective number.
Indicates number of zeros after effective number. (0 or 1)
NOTE FOR PARTS LIST

9
TECHNICAL SPECIFICATIONS
nAudio Section
• Analog
Input sensitivity/Input impedance : 200mV/47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 pre-output: 1.2 V
Balanced 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 (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
Frequency response: 5 Hz – 10 MHz — 0, –3 dB
• Color component video connector
Input/output level and impedance : Y(brightness)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
(ANTENNA input – MEDIA PLAYER OUT)
[FM](Note:μVat75Ω,0dBf=1x10–15 W)
Receiving Range :
[FM] 87.5 MHz – 107.9 MHz [AM] 530 kHz – 1710 kHz
Usable Sensitivity :
[FM]1.5μV(14.8dBf) [AM]20μV
S/N (IHF–A weighted) :
[FM]MONO 78 dB
STEREO 68 dB
HD 85 dB [AM] 85 dB
Distortion (1 kHz) :
[FM]MONO 0.1 %
STEREO 0.2 %
HD 0.02 % [AM] 0.02 %
nGeneral
Power supply :AC 120 V, 60 Hz
Power consumption : 60 W
Power consumption in standby mode : 0.2 W
Power consumption in CEC standby mode : 0.5 W
Power comsumption in network standby mode : 2.7 W
For purposes of improvement, specications and design are
subject to change without notice.
14.5 16.5 361.0
11.5
389.0 267.0 39.554.5
170.5
180.5
50.0 50.0340.0
440.0
56.0
DIMENSION

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 "ON/STANDBY (X)" button.
2. Press "ON/STANDBY (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 : 2 Set
WhenyouupdatethermwarebyDFW,youcanusethefollowingJIG(RS232Ctointernalconnectorconversionadapter
with 4P FFC cable kit ).
PleaseordertomarantzOfcialServiceDistributorinyourregionifnecessary.
8U-210100S : WRITING KIT : 1 Set
(Refer to 65 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.
ON / STANDBY (X)
MOVIE
MUSIC
CAUTION IN SERVICING

11
DISASSEMBLY
• Disassembleinorderofthearrowinthefollowinggure.
• Inthecaseofthere-assembling,assembleitinorderofthereverseofthefollowingow.
• In the case of the reassembling, observe "Caution concerning disassembly and assembly!".
• If wire bundles are untied or moved to perform adjustment or replace parts etc., be sure to rearrange them neatly as
they were originally bundled or placed afterward.
Otherwise, incorrect arrangement can be a cause of noise generation.
FRONT PANEL ASSY
Refer to "DISASSEMBLY
1. FRONT PANEL ASSY"
and "EXPLODED VIEW"
PCB FRONT
(Ref. No. of EXPLODED VIEW : C1)
PCB HP
(Ref. No. of EXPLODED VIEW : C2)
PCB FRONT HDMI
(Ref. No. of EXPLODED VIEW : C19)
PCB DOOR DET
(Ref. No. of EXPLODED VIEW : C3)
PCB FRONT HDMI FFC CABLE
(Ref. No. of EXPLODED VIEW : C5)
TRANS MAIN
Refer to "DISASSEMBLY
5. TRANS MAIN"
and "EXPLODED VIEW"
TRANS , POWER
(Ref. No. of EXPLODED VIEW : C20)
HEAT SINK ASSY
Refer to "DISASSEMBLY
2. HEAT SINK ASSY"
and "EXPLODED VIEW"
PCB H-DAM
(Ref. No. of EXPLODED VIEW : C8)
PCB GUIDE L
(Ref. No. of EXPLODED VIEW : C23)
GUIDE_FRONT FFC
(Ref. No. of EXPLODED VIEW : C4)
CABINET TOP
HDMI UNIT ASSY
Refer to "DISASSEMBLY
3. HDMI UNIT ASSY"
and "EXPLODED VIEW"
PCB HDMI
(Ref. No. of EXPLODED VIEW : C15)
PCB FRONT HDMI FFC
(Ref. No. of EXPLODED VIEW : C7)
PCB VIDEO
(Ref. No. of EXPLODED VIEW : C14)
PCB FUSE
(Ref. No. of EXPLODED VIEW : C11)
PCB F/W PRE OUT
(Ref. No. of EXPLODED VIEW : C9)
PCB INPUT
(Ref. No. of EXPLODED VIEW : C13)
PCB XLR
(Ref. No. of EXPLODED VIEW : C10)
PCB SIDE CNT
(Ref. No. of EXPLODED VIEW : C16)
PREOUT PCB
(Ref. No. of EXPLODED VIEW : C12)

12
About the photos used for "descriptions of the DISASSEMBLY" section
• The shooting direction of each photograph used herein is indicated on the left side of the respective photograph as
"Shooting direction: ***".
• Refer to the diagram below about the shooting direction of each photograph.
• Photographs with no shooting direction indicated were taken from the top of the set.
• The photograph is AV7701U1B model.
1. FRONT PANEL ASSY
(1) Remove the screws.
The viewpoint of each photograph
(Shooting direction)
［View from the top］
Front side
Shooting direction: B
Shooting direction: DShooting direction: C
Shooting direction: A
CABINET TOP FRONT PANEL ASSY
→
Proceeding :
View from the bottom

13
(2) Cut the wire clamp band, then disconnect the connector wires and FFC.
(3) Remove the screws.
CN321
FFC
CN602
FFC
STYLE PIN : Loosen
cut
Shooting direction: D
Shooting direction: C

14
(4) Disconnect the connector wire and FFC.
(5) Remove the screws, then detach the FRONT BRACKET.
(6) Remove the screws.
STYLE PIN : Loosen
FFCBN321
Shooting of photograph: A
Shooting of photograph: A
FRONT BRACKET
Shooting of photograph: A
EARTH DOOR
FRONT BRACKET
FRONT BRACKET

15
(7) Remove the screws.
Shooting of photograph: A
GEAR , DAMPER

16
2. HEAT SINK ASSY
(1) Remove the screws.
(2) Cut the wire clamp band, then remove the screws. Disconnect the connector wires.
CABINET TOP HEAT SINK ASSY
→
Proceeding :
View from the bottom
Shooting direction: D
Shooting direction: C

17
(3) Cut the wire clamp band, then disconnect the connector wire and FFC.
(4) Cut the wire clamp bands, then disconnect the connector wires.
cut
CN321 FFC
FFC
STYLE PIN : Loosen HEAT SINK Assy
cut
CN602
CN461
CN461P CN601 CN704 CN705
CN492
CN701
CN7010

18
3. HDMI UNIT ASSY
(1) Remove the screws.
(2) Remove the screws, then remove the BACK PANEL and the HDMI BRACKET.
CABINET TOP HDMI UNIT ASSY
→
HEAT SINK ASSY
→
Proceeding :
View from the bottom
Shooting of photograph: A

19
(3) Cut the wire clamp band, then disconnect the connector wires and the FFC.
Remove the PCB HDMI from the PCB FRONT CNT and PCB SIDE CNT (Board to board).
(4) Disconnect the connector wire. Remove the screws.
CN321 FFC
FFC
cut
STYLE PIN : Loosen
Shooting direction: C

20
(5) Remove the screws.
(6) Remove the screws, then disconnect the connector wires.
Shooting direction: A
Shooting direction: A
CN940, CN941