Denon AVC-4310 User manual

D&M Holdings lnc.
e
SERVICE MANUAL
AV SURROUND RECEIVER
AV SURROUND AMPLIFIER
MODEL JP EU EC E2 EK E2A E1C EUT
AVR-4310CI
33
AVR-4310
3
MODEL JP EU EC E2 EK E2A E1C EUT
AVC-4310
3
s
d
Ver. 6
●For purposes of improvement, specifications and design are subject to change without notice.
●Please use this service manual with referring to the operating instructions without fail.
●Some illustrations using in this service manual are slightly different from the actual set.
S0025-1V06DM/DG0912
Please refer to the
MODIFICATION NOTICE.

2
AVR-4310CI/AVR-4310/AVC-4310
Please heed the points listed below during servicing and inspection.
◎Heed the cautions!
Spots requiring particular attention when servicing, such
as the cabinet, parts, chassis, etc., have cautions indicated
on labels or seals. Be sure to heed these cautions and the
cautions indicated in the handling instructions.
◎Caution concerning electric shock!
(1) An AC voltage is impressed on this set, so touching in-
ternal metal parts when the set is energized could
cause electric shock. Take care to avoid electric shock,
by for example using an isolating transformer and
gloves when servicing while the set is energized, un-
plugging the power cord when replacing parts, etc.
(2)There are high voltage parts inside. Handle with extra
care when the set is energized.
◎Caution concerning disassembly and
assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
edges of parts which could cause injury if fingers are
moved across them. Use gloves to protect your hands.
◎Only use designated parts!
The set's parts have specific safety properties (fire resis-
tance, voltage resistance, etc.). For replacement parts, be
sure to use parts which have the same properties. In par-
ticular, for the important safety parts that are marked zon
wiring diagrams and parts lists, be sure to use the desig-
nated parts.
◎Be sure to mount parts and arrange
the wires as they were originally!
For safety reasons, some parts use tape, tubes or other in-
sulating materials, and some parts are mounted away from
the surface of printed circuit boards. Care is also taken with
the positions of the wires inside and clamps are used to
keep wires away from heating and high voltage parts, so
be sure to set everything back as it was originally.
◎Inspect for safety after servicing!
Check that all screws, parts and wires removed or discon-
nected for servicing have been put back in their original po-
sitions, inspect that no parts around the area that has been
serviced have been negatively affected, conduct an insu-
lation 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 turn the power switch on. Us-
ing a 500V insulation resistance tester, check that the in-
sulation resistance between the terminals of the power
plug and the externally exposed metal parts (antenna ter-
minal, headphones terminal, microphone terminal, input
terminal, etc.) is 1MΩor greater. If it is less, the set must
be inspected and repaired.
Concerning important safety
parts
Many of the electric and structural parts used in the set
have special safety properties. In most cases these prop-
erties are difficult to distinguish by sight, and using re-
placement 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 dia-
grams and parts lists is this service manual. Be sure to re-
place them with parts with the designated part number.
(1) Schematic diagrams ... Indicated by the zmark.
(2) Parts lists ... Indicated by the zmark.
Using parts other than the designated
parts could result in electric shock, fires or
other dangerous situations.
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make 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 unit is defective.
CAUTION
CAUTION

3
AVR-4310CI/AVR-4310/AVC-4310
DIMENSION
AVR-4310CI/AVR-4310/AVC-4310
344
434
155
15.5
170.5
20.7
244.5
372.8
20.5
414
54.7

4
AVR-4310CI/AVR-4310/AVC-4310
WIRE ARRANGEMENT
If wire bundles are untied or moved to perform adjustment or parts replacement 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.
Wire arrangement viewed from the top
Front Panel side
Back Panel side

5
AVR-4310CI/AVR-4310/AVC-4310
CAUTION IN SERVICING
BeforetheDigitalP.W.B.arereplaced
If you cannot specify the cause of the digital PWB defect, carry out "Initializing" →"Update to latest firmware".
The defect may be cleared.
・See the following for the method of initializing the μcom.
Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed when the µcom, peripheral parts of µcom, and Digital P.W.B.
are replaced.
1. Switch off the unit.
2. Hold the following STANDARD button and DSP SIMULATION button, and switch on the unit.
3. Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and
the microprocessor will be initialized.
Note:・If step 3 does not work, start over from step 1.
・All user settings will be lost and this factory setting will be recovered when this initialization mode.
So make sure to memorize your setting for restoring after the initialization.
JIG to use for servicing
When you repair the printing board, you can use the following JIG. Please order to Denon Official Service Distributor in your
region if necessary.
Extention cable kit
00D SPK- 561 EXTENSION UNIT KIT : 1 Set
00D SPK- 562 TUCP CONN. JOINT KIT : 1 Set
Extention cable for Idling Current
Parts Number for Extension Cables and Quantity of Unit.
How to use and Adjust Idle Current.
1. The thin and hard plate (ex. Ruler) is fixed with the tape behind the cable.
2. The voltmeter is connected with the other side of the extension cable.
3. Refer to ADJUSTMENT(Idling Current).
Parts Number Parts Name Q'ty / unit Remarks
612050082004D 6P 250mm NH 1 L=250mm 6P NH Cable
612050083007D 8P 250mm NH 1 L=250mm 8P NH Cable
1,2 2,3

6
AVR-4310CI/AVR-4310/AVC-4310
DISASSEMBLY
• Disassemble in order of the arrow of the figure of following flow.
• In the case of the re-assembling, assemble it in order of the reverse of the following flow.
• In the case of the re-assembling, observe "attention of assembling" it.
TOP COVER
BACK PANEL UNIT ASSY FRONT PANEL UNIT ASSY
Refer to "DISASSEMBLY
REG UNIT
Refer to "DISASSEMBLY
2. BACKPANEL UNIT ASSY" Refer to "DISASSEMBLY 1.FRONT PANEL UNIT ASSY"
5. REG UNIT" P.SW UNIT
and "EXPLODED VIEW" (Ref. No. of EXPLODED VIEW : A-8)
DIGITAL UNIT ASSY
REG UNIT FRONT HDMI UNIT
Refer to "DISASSEMBLY (Ref. No. of EXPLODED VIEW : B-4) (Ref. No. of EXPLODED VIEW : E-4)
3. DIGITAL UNIT ASSY" REG CONNECT-1 UNIT FRONT USB UNIT
and "EXPLODED VIEW" (Ref. No. of EXPLODED VIEW : A-15) (Ref. No. of EXPLODED VIEW : E-3)
DIGITAL UNIT CONNECT UNIT-2 MIC UNIT
(Ref. No. of EXPLODED VIEW : G) (Ref. No. of EXPLODED VIEW : D-4) (Ref. No. of EXPLODED VIEW : A-9)
FRONT IN UNIT
(Ref. No. of EXPLODED VIEW : A-10)
A.VIDEO UNIT, AUDIO UNIT AMP UNIT
VR CONNECT UNIT
and RADIATOR UNIT ASSY
Refer to "DISASSEMBLY (Ref. No. of EXPLODED VIEW : A-5)
Refer to "DISASSEMBLY 6. AMP UNIT" VOLUME UNIT
4. A.VIDEO UNIT, AUDIO UNIT and "EXPLODED VIEW" (Ref. No. of EXPLODED VIEW : A-4)
and RADIATOR UNIT ASSY" AMP UNIT FUNC CONNECT UNIT
and "EXPLODED VIEW" (Ref. No. of EXPLODED VIEW : D-1) (Ref. No. of EXPLODED VIEW : A-7)
A.VIDEO UNIT FUNC UNIT
(Ref. No. of EXPLODED VIEW : E-1) (Ref. No. of EXPLODED VIEW : A-6)
AUDIO UNIT
P.AMP JOINT UNIT
FLD UNIT
(Ref. No. of EXPLODED VIEW : E-2) Refer to "DISASSEMBLY (Ref. No. of EXPLODED VIEW : A-1)
MAIN CPU UNIT 7. P.AMP JOINT UNIT"
(Ref. No. of EXPLODED VIEW : F) and "EXPLODED VIEW"
REMOTE/IPOD UNIT P.AMP JOINT UNIT
(Ref. No. of EXPLODED VIEW : B-5) (Ref. No. of EXPLODED VIEW : D-2)
232C UNIT
(Ref. No. of EXPLODED VIEW : B-6)
P.AMP UNIT
Refer to "DISASSEMBLY
9.P.AMP UNIT"
and "EXPLODED VIEW"
P.AMP UNIT
(Ref. No. of EXPLODED VIEW : D-1〜7)

7
AVR-4310CI/AVR-4310/AVC-4310
About the photos used for descriptions in the “DISASSEMBLY” section.
• The direction from which the photographs used herein were photographed is indicated at "Direction of photograph: ***" at
the left of the respective photographs.
• Refer to the table below for a description of the direction in which the photos were taken.
• Photographs for which no direction is indicated were taken from above the product.
1. FRONT PANEL UNIT ASSY
(1) Remove the screws.
(2) Cut the wire clampers then disconnect the connector wires.
Front side
Direction of photograph: B
Direction of photograph: D
Direction of photograph: C
Direction of photograph: A
The viewpoint of each photograph
(Photografy direction)
［View from above］
Proceeding : TOP COVER →FRONT PANEL UNIT ASSY
View from bottom
CX021
CY062
Direction of photograph: D
cut
cut
cut

8
AVR-4310CI/AVR-4310/AVC-4310
(3) Remove the FFC cover and acetate tapes. Disconnect the FFC Cables.
(4) Remove the screws.
[Attention of assembling]
When mounting the FRONT PANEL ASSY on the CHASSIS, do so with the DOOR open so as to prevent
breaking the EARTH PLATE(DOOR).
If the FRONT PANEL ASSY is mounted on the chassis with the DOOR closed, the EARTH PLATE(DOOR) will
hit the CHASSIS and break.
Acetate tape
FFC Cover
FFC Cable
Direction of photograph: C
FFC Cable
ٟ
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in FRONT PANEL ASSY.
DOOR open
DOOR closed (EARTH PLATE (DOOR) will be broken.)
EARTH PLATE (DOOR)
DOOR
DOOR
EARTH PLATE (DOOR)
Direction of photograph: A
Direction of photograph: A

9
AVR-4310CI/AVR-4310/AVC-4310
2. BACK PANEL UNIT ASSY
(1) Remove the Sheets, then remove the screws.
(2) Remove the screws.
(3) Disconnect the connector wires and FFC Cable, then remove the screws.
Proceeding : TOP COVER →BACK PANEL UNIT ASSY
Sheets
View from bottom
ً
ً
Direction of photograph: A
CY153
CY101
CX055 CX074
FFC Cable
CY052

10
AVR-4310CI/AVR-4310/AVC-4310
(4) Remove the FFC cover, PWB HOLDER and acetate tapes. Cut the wire clamper, then disconnect the connector wire
and FFC Cable.
(5) Cut the wire clamper, then disconnect the connector wire.
FFC Cable
CX068
PWB HOLDER
Direction of photograph: C
cut
Acetate tape Acetate tape
FFC Cover
v
Direction of photograph: D
BACK PANEL UNIT ASSY
CX091
cut

11
AVR-4310CI/AVR-4310/AVC-4310
3. DIGITAL UNIT ASSY
(1) Remove the alminium tape, then cut the wire clampers. Disconnect the connector wire, FFC Cables, and board to
board.
(2) Remove the screws.
Proceeding : TOP COVER →→
BACK PANEL UNIT ASSY DIGITAL UNIT ASSY
FFC Cable
FFC Cable
FFC Cable cut
cut
MAIN CPU UNIT
DIGTAL UNIT ASSY
Board to board
CX058
CX124
CX047
CY061
Alminium Tape
CY124
ً
◆
Direction of photograph: A

12
AVR-4310CI/AVR-4310/AVC-4310
4. A.VIDEO UNIT, AUDIO UNIT and RADIATOR UNIT ASSY
(1) Disconnect the board to board.
(2) Disconnect the connector wires.
(3) Remove the screws.
Proceeding : TOP COVER →→
→
BACK PANEL UNIT ASSY
A.VIDEO UNIT, AUDIO UNIT and RADIATOR UNIT ASSY
DIGITAL UNIT ASSY
v
Direction of photograph: C
MAIN CPU UNIT
CX073CX192
Direction of photograph: A
A.VIDEO UNIT
AUDIO UNIT
RADIATOR UNIT ASSY

13
AVR-4310CI/AVR-4310/AVC-4310
5. REG UNIT
(1) Disconnect the board to board and connector wires.
(2) Disconnect the connector wires, then remove the screws.
6. AMP UNIT
(1) Disconnect the VH connector and conector.
Proceeding : TOP COVER →→
→
→
BACK PANEL UNIT ASSY
A.VIDEO UNIT, AUDIO UNIT and RADIATOR UNIT ASSY
DIGITAL UNIT ASSY
REG UNIT
Board to board
Direction of photograph: A
CX231 CX092
v
ً
ٟ
Direction of photograph: A
Proceeding : TOP COVER →→
→
→→
BACK PANEL UNIT ASSY
A.VIDEO UNIT, AUDIO UNIT and RADIATOR UNIT ASSY
DIGITAL UNIT ASSY
REG UNIT AMP UNIT
CX851CX891
CX876
CX874
CX871
CX873
CX872
CX875
CX877
View from bottom

14
AVR-4310CI/AVR-4310/AVC-4310
7. P.AMP JOINT UNIT
(1) Disconnect the connector.
8. P.AMP UNIT
(1) Remove the screws.
Proceeding : TOP COVER →→
→
→→→
BACK PANEL UNIT ASSY
A.VIDEO UNIT, AUDIO UNIT and RADIATOR UNIT ASSY
DIGITAL UNIT ASSY
REG UNIT AMP UNIT P.AMP JOINT UNIT
CX803CX805
CX806CX811CX812CX807
CX804
Direction of photograph: A
Proceeding : TOP COVER →→
→
→→→ →
BACK PANEL UNIT ASSY
A.VIDEO UNIT, AUDIO UNIT and RADIATOR UNIT ASSY
DIGITAL UNIT ASSY
REG UNIT AMP UNIT P.AMP JOINT UNIT P.AMP UNIT
Direction of photograph: B

15
AVR-4310CI/AVR-4310/AVC-4310
SPECIAL MODE
Special mode setting button
※Press the ON/OFF button to turn on while pressing both buttons A and B at the same time.
*1 : About RS-232C communications
RS-232C communications are not possible when" " is displayed on the FL display.
Press and hold in the "STATUS" and " ▽" buttons for over 3 seconds with the power turned on to turn the " "
display off. RS-232C communications are now enabled.
Mode Button A Button B contents
Version display
(µcom/DSP Error Display)
STATUS RETURN
Serial No. and firmware versions such as Main, Sub, DSP are
displayed in the FL manager. Errors are displayed when they
occur. (Refer to 16 page.)
Displaying the protection history mode
STATUS MENU
Displaying the protection history
(Refer to 18 page.)
Initialization mode
(Remove settings for Installer Setup.)
STANDARD
DSP
SIMULATION
Backup data initialization is carried out.
(Remove settings for Installer Setup.)
Initialization mode
(Includes settings for Installer Setup)
CURSOR UP CURSOR
DOWN
Backup data initialization is carried out.
(Includes settings for Installer Setup)
Mode for switching tuner frequency step
STANDARD DIRECT/
STEREO
---E2 model only---
Change tuner frequency step to FM:200kHz/AM:10kHzSTEP. g
Mode for preventing remote control
acceptance
STATUS ENTER
Operations using remote control are rejected.
(Mode cancellation: Turn off power and execute the same button
operations as when performing setup.)
Panel lock mode
DSP
SIMULATION
ZONE2
Operations using main unit panel buttons or master volume are
rejected.
Panel lock mode
(Remove Master volume)
DIRECT/
STEREO ZONE2
Operations using main unit panel buttons are rejected.
Cancellation of panel lock mode
PURE
DIRECT ZONE2
Panel lock mode is cancelled.
Installer Setup mode*1
MENU CURSOR
LEFT
Access Remote Maintenance mode via the internet.Installer Setup
is displayed on GUI/Option Menu.
Refer to AVR4310_RemoteMaintenance_.pdf of SDI.
ON/OFF
RETURN
ZONE2
DSP
SIMULATION
STANDARD STATUSENTER
PURE
DIRECT
DIRECT/
STEREO
MENU
CURSOR

16
AVR-4310CI/AVR-4310/AVC-4310
1. Version display (µcom/DSP Error Display)
1.1. Operation Spec
µcom version display mode:
When the following conditions are satisfied at its starting state, error information is displayed before version information.
Starting method (same as µcom version display):
Press the ON/OFF button to turn on while pressing both buttons STATUS and RETURN at the same time.
("Error information" is displayed after about 10 seconds.)
The FL display changes in the order given in item-1.2. each time you press the STATUS button.
1.2. Display Order
Error information(Refer to 1.3. Error display)→qModel destination information wMain-µcom version information
eMain1st Boot Loader rDSP1version information tAudio PLD yGUI FPGA Config uGUI Nios Program
iETHER(DM860) First BootLoafer, HardwareID oETHER(DM860) Second BootLoafer, RhapsodyFlag
Q0ETHER(DM860) IMAGE Q1ETHER(DM850) MAC ADDRESS information
Q2HD RADIO SDK /HD RADIO DSP
(E2 model only) Q3MultEQ Pro APP (Displayed when Audyssey Pro is complete)
Q4MultEQ Pro ICL (Displayed when Audyssey Pro is complete)
1. Version display (µcom/DSP Error Display)
1.1. Operation Spec
µcom version display mode:
When the following conditions are satisfied at its starting state, error information is displayed before version information.
Starting method (same as µcom version display):
Press the ON/OFF button to turn on while pressing both buttons STATUS and RETURN at the same time.
("Error information" is displayed after about 10 seconds.)
The FL display changes in the order given in item-1.2. each time you press the STATUS button.
1.2. Display Order
Error information(Refer to 1.3. Error display)qModel destination information wMain-µcom version information
eMain1st Boot Loader rDSP1version information tAudio PLD yGUI FPGA Config uGUI Nios Program
iETHER(DM860) First BootLoafer, HardwareID oETHER(DM860) Second BootLoafer, RhapsodyFlag
Q0ETHER(DM860) IMAGE Q1ETHER(DM850) MAC ADDRESS information
Q2HD RADIO SDK /HD RADIO DSP
(E2 model only) Q3MultEQ Pro APP (Displayed when Audyssey Pro is complete)
Q4MultEQ Pro ICL (Displayed when Audyssey Pro is complete)
No. Display item Display
qModel destination
Cereal No.
wMain-µcom
MainFLASH
eMain 1st Boot Loder
Sub-µcom
rDSP 1
DSP 2
tAudio PLD
Video PLD
yGUI FPGA
uGUI Sflash Nios
GUI Sflash Font
iDM860 1st Bootloader
- Hard ID
oDM860 2nd Bootloader
- Rhapsody Flag
Q0 DM860 Image
Q1 ETHER MAC ADDRESS
Q2 HD RADIO SDK
HD RADIO DSP
Q3 MultEQ Pro APP
Q4 MultEQ Pro ICL
Ser ial No. AVR
9041500001
Ma i n : .
Ma i n ROM : .
Ma i n FBL : .
Sub : .
DSP1 : .
DSP2 : .
Aud i o PLD : .
Video PLD : .
GUI Conf i g:
GUI PRG:
GUI DAT:
Ether FBL
-
Ether SBL
-
Ether IMG
-
*Ethernet MAC
-
*HDSDK : .
*HDDSP : C0 0 0 2 . 0 0 0
*Mu l t EQ P r o APP
...
*Mu l t EQ P r o I CL
...

17
AVR-4310CI/AVR-4310/AVC-4310
1.3. Error display
See the following table for each "Error information" display and its contents (status). Display order is ①②③④⑤⑥ .
2. Displaying the protection history mode
2.1. Operation specifications
ERROR MODE(displaying the protection history)
When started up, the error information is displayed.
Starting up:
With the "MENU" and "STATUS" buttons pressed, press the "ON/OFF" button to turn the power on. The error (protection
history display) mode is set.
Then, press the "STATUS" button to turn on the FL display.
2.2. About the display on the FL display
When the "STATUS" button is pressed after setting the error (protection history display) mode, a history like the one shown
below is displayed, depending on the conditions.
(1) Normally (when there has been no protection incident)
(2) For ASO/DC (when the last protection incident was ASO or DC protection)
(3) For THERMAL (when the last protection incident was THERMAL protection)
When the "STATUS" button is pressed again after the above protection history is displayed, the normal display reappears.
Condition State Display
①Sub-µcom
NG
No response from Sub-µcom
"□ＳＵＢ□ □ＥＲＲＯＲ□０１□□"
②DIR NG
No response from DIR
"□ＤＩＲ□ □ＥＲＲＯＲ□０１□□"
③DSP1 NG
When DSP boot, executing DSP reset makes no change to DSP1 FLAGO port "H".
"□ ＤＳＰ1 □ＥＲＲＯＲ□０１□ □"
No change to DSP1 FLAGO port "H" before issuing DSP command.
"□ ＤＳＰ1 □ＥＲＲＯＲ□０２□ □"
When DSP data read, executing WRITE="L" makes no change to ACK="H".
"□ ＤＳＰ1 □ＥＲＲＯＲ□０３□ □"
When DSP data read, executing REQ="L" makes no change to ACK="L".
"□ ＤＳＰ1 □ＥＲＲＯＲ□０４□ □"
When DSP data write, executing WRITE="H" makes no change to ACK="H".
"□ ＤＳＰ1 □ＥＲＲＯＲ□０５□ □"
When DSP data write, executing REQ="L" makes no change to ACK="L".
"□ ＤＳＰ1 □ＥＲＲＯＲ□０６□ □"
When DSP special code boot, executing DSP reset makes no change to DSP1
FLAGO port "H".
"□ ＤＳＰ1 □ＥＲＲＯＲ□１１□ □"
No change to DSP1 FLAGO port "H" before issuing DSP special read command.
"□ ＤＳＰ1 □ＥＲＲＯＲ□１２□ □"
No change to DSP1 FLAGO port "H" before DSP version read.
"□ ＤＳＰ1 □ＥＲＲＯＲ□１３□ □"
④DSP2 NG
When DSP boot, executing DSP reset makes no change to DSP2 FLAGO port "H".
"□ ＤＳＰ2 □ＥＲＲＯＲ□０１□ □"
No change to DSP2 FLAGO port "H" before issuing DSP command.
"□ ＤＳＰ2 □ＥＲＲＯＲ□０２□□"
When DSP data read, executing WRITE="L" makes no change to ACK="H".
"□ ＤＳＰ2 □ＥＲＲＯＲ□０３□ □"
When DSP data read, executing REQ="L" makes no change to ACK="L".
"□ ＤＳＰ2 □ＥＲＲＯＲ□０４□ □"
When DSP data write, executing WRITE="H" makes no change to ACK="H".
"□ ＤＳＰ2 □ＥＲＲＯＲ□０５□ □"
When DSP data write, executing REQ="L" makes no change to ACK="L".
"□ ＤＳＰ2 □ＥＲＲＯＲ□０６□ □"
When DSP special code boot, executing DSP reset makes no change to DSP2
FLAGO port "H".
"□ ＤＳＰ2 □ＥＲＲＯＲ□１１□ □"
No change to DSP2 FLAGO port "H" before issuing DSP special read command.
"□ ＤＳＰ2 □ＥＲＲＯＲ□１２□ □"
No change to DSP2 FLAGO port "H" before DSP version read.
"□ ＤＳＰ2 □ＥＲＲＯＲ□１３□ □"
⑤EEPROM NG
Error appeared in EEPROM checksum.(*** is a block address number.)
"□Ｅ2ＰＲＯＭ□ＥＲＲ＊＊＊□ □"
⑥ Both SUB/DSP
/EEPROM OK
(No error display, version display only)
PROTEC T H I S TORY
:NO PROTECT
PROTEC T H I S TORY
:ASO / DC
PROTEC T H I S TORY
:THERMAL

18
AVR-4310CI/AVR-4310/AVC-4310
2.3. Clearing the protection history
There are two ways to clear the protection history, as described below.
(1) Start up the error (protection history display) mode, display the error, then press and hold in the "ENTER" button for 3
seconds.
Press and hold in the "ENTER" button for 3 seconds
The above is displayed and the protection history is cleared.
(2) Initialize.
※If you want to save a backup, use the method in 3.(1) above.
Warning indication by the STANDBY LED
If the power is turned off when a protection incident has been detected, the STANDBY LED (red) flashes as follows as
warning according to the conditions in which the protection incident occurred.
(1) ASO/DC PROTECTION : Flashes in cycles of 0.5 seconds (0.25 seconds lit, 0.25 seconds off)
(2) THERMAL PROTECTION : Flashes in cycles of 2 seconds (1 second lit, 1 second off)
3. Mode for switching tuner frequency step ---E2 model only--- g
3.1. Operation specifications
Change tuner frequency step to FM:200kHz/AM:10kHz STEP.
Starting up:
(1) With the "STANDARD" and "DIRECT/STEREO" buttons pressed, press the "ON/OFF" button to turn the power on.
"*Tuner FRQ Set" appears on the display.
(2) Use 0 1 and select "<AM10/FM200>".
(3) Press the "ENTER" button.
(4) Press the "ON/OFF" button to turn the power off.
(5) Then, press the "ON/OFF" button to turn the power on.
NOTE : Backup data(Remove settings for Installer Setup) initialization is carried out automatically.
PROTEC T H I S TORY
:THERMAL
PROTEC T H I S TORY
CLEAR
PROTEC T H I S TORY
:NO PROTECT
*Tune r FRQ Se t
0MA9/FM50M 1
*Tune r FRQ Se t
0MA10/FM20 1

19
AVR-4310CI/AVR-4310/AVC-4310
VERSION UPGRADE PROCEDURE OF FIRMWARE
You can update by downloading the latest firmware from the Internet.
1.Update from the Internet
1.1. Connecting to the Network
(1) System Requirement
• Internet Connection by Broadband Circuit
• Modem
• Router
• Ethernet cable (CAT-5 or greater recommended)
(2) Setting
1.2. Check for Update and Update
Check if the latest firmware exists. You can also check approximately how long it will take to complete an update.
(1) Press the MENU button on the remote control to display the GUI menu.
(2) Use the cursor buttons to select "Manual Setup" →"Option Setup" →"Firmware Update" →"Update Check".
(3) Press the ENTER buttom.
• The latest version of the firmware uploaded to the web is displayed.
• If the latest firmware version is on the web, proceed to (4).
• If the latest firmware is already installed, press the MENU button to close the menu.
(4) Use the cursor buttons to select "Update", then press the ENTER button.
• During update, the power indicator lights red and the GUI screen is shut down. And a rough remaining time is
indicated on the display.
• When updating is complete the power indicator lights green and normal status is resumed.
(5) Press the MENU button to close the menu.
--- Cautions on Firmware Update ---
• In order to use these functions, you must have the correct system requirements and settings for a broadband Internet
connection.
• Do not turn off the power until updating is completed.
Even with a broadband connection to the Internet, approximately about 1 hour is required for the updating procedure to
be completed.
Once updating starts, normal operations on the AVR-4310 cannot be performed until updating is completed. Also, setting
items of the GUI menu of AVR-4310 or setting items of the image adjustment may be initialized.
Make a note of the settings before updating, and set them again after updating.
Modem
Internet
Computer
LAN port/
Ethernet
connector
ETHERNET
connector
Router To WAN port
To LAN port
To LAN port

20
AVR-4310CI/AVR-4310/AVC-4310
1.3. About the error code
See the chart below for error codes, details of faults, and coping strategies when firmware updates are performed
through DPMS (Denon Product Management Server).
Error
code Details of Error code Display Coping strategies
01 Log-in to DPMS has failed. Reset and update again. Carry out the update in an environment
that has little network load.
02 Line, etc., is busy when logging
into DPMS. Carry out the update in an environment that has little network load.
03 Connection to DPMS failed. Check the network connection. Carry out the update in an environment
that has little network load.
04 Firmware file data was requested
but error message was received.
Check the network connection.
Carry out the update in an environment
that has little network load.
05 Firmware file data was requested
but it timed out.
Check the network connection.
Carry out the update in an environment
that has little network load.
06 Firmware file data was requested
but error message was received.
Check the network connection.
Carry out the update in an environment
that has little network load.
07 All firmware file data was
requested but it timed out.
Check the network connection.
Carry out the update in an environment
that has little network load.
08 Main CPU firmware file data was requested but error message was
received.
Check the network connection.
Carry out the update in an environment
that has little network load.
09 Main CPU firmware file data was
requested but it timed out.
Check the network connection.
Carry out the update in an environment
that has little network load.
0A Error (NG) message received
when downloading Main CPU firm-
ware.
Turn the power off then back on.
Updating starts automatically.
Carry out the update in an environment
that has little network load.
0B Error (line congestion) message received when downloading Main
CPU firmware.
Turn the power off then back on.
Updating starts automatically.
Carry out the update in an environment
that has little network load.
0C Error (connection failure) mes- sage received when downloading
Main CPU firmware.
Turn the power off then back on.
Updating starts automatically.
Carry out the update in an environment
that has little network load.
0D Data acquisition failed (timed out) when downloading Main CPU firm-
ware.
Turn the power off then back on.
Updating starts automatically.
Carry out the update in an environment
that has little network load.
30 Main CPU failed to receive firm- ware for rewriting sent from
DM860 (when timed out).
Turn the power off then back on.
Updating starts automatically.
Log i n f a i l ed
01
Server is busy
02
Connec t i on f a i l
03
Connec t i on f a i l
04
Connec t i on f a i l
05
Connec t i on f a i l
06
Connec t i on f a i l
07
Connec t i on f a i l
08
Connec t i on f a i l
09
Down l oad f a i l
0A
Down l oad f a i l
0B
Down l oad f a i l
0C
Connec t i on f a i l
0D
Main Fi rm ***
mi n
Upda t i ng f a i l 30