Denon AVR-1912E3 User manual

START::|qzT7t3cIXfGvpSN6RPbAWw==|1Ai2yjCFMIEeNAMN4o8xACrfn0dvKIUUVX0LLQXbRM8=|RtRIz5LbaS+BXuKmvA5tJg==|::END
D&M Holdings Inc.
SERVICE MANUAL
e
e
Copyright 2012 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
MODEL JP E3 E2 EK EA E1 E1K E1C
AVR-1912
P P P P
AVR-2112CI
P
INTEGRATED NETWORK AV RECEIVER
sss
s
Ver. 6
S0436-0V06DM/DG1202
• 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.

2
CONTENTS
SAFETY PRECAUTIONS ..........................................................3
NOTE FOR SCHEMATIC DIAGRAM.........................................4
TECHNICAL SPECIFICATIONS................................................5
DIMENSION ...............................................................................5
CAUTIONS IN SERVICING .......................................................7
Initializing INTEGRATED NETWORK AV RECEIVER ..............7
Service Jig ................................................................................7
DISASSEMBLY..........................................................................8
1. FRONT PANEL ASSY .........................................................10
2. PCB RS232C (AVR-2112CI only) .......................................11
3. PCB HDMI...........................................................................12
4. POWER TRANS MAIN........................................................13
5. PCB AUDIO_VIDEO ASSY .................................................13
6. PCB SMPS/PCB SPK .........................................................14
7. PCB REG/PCB REG_CNT..................................................15
8. RADIATOR ASSY................................................................16
SPECIAL MODE ......................................................................18
Special mode setting button (for 1912E3 model) ....................18
Special mode setting button
(for AVR-1912E2/EA/E1C,2112CIE3 model)...........................19
1. µcom/DSP Version display mode ........................................20
2. Errors checking mode (Displaying the protection history)...23
3. Remote ID Setup mode.......................................................25
4. DIAGNOSTIC MODE
(Video/Audio (signal) path conrmation mode) ...................27
BLOCK DIAGRAM...................................................................29
JIG FOR SERVICING ..............................................................43
WHEN THE MICROPROCESSOR IS REPLACED
WITH A NEW ONE...................................................................45
PROCEDURE FOR UPGRADING THE VERSION
OF THE FIRMWARE................................................................45
1. How to update by DFW .......................................................45
2. How to update by DPMS.....................................................49
ADJUSTMENT.........................................................................56
SURROUND MODES AND PARAMETERS ............................57
TROUBLE SHOOTING............................................................61
1. POWER...............................................................................61
2. Analog video........................................................................62
3. HDMI/DVI ...........................................................................68
4. AUDIO .................................................................................77
5. Network/USB.......................................................................80
6. SMPS ..................................................................................83
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK .............86
LEVEL DIAGRAM....................................................................87
PRINTED WIRING BOARDS...................................................93
7CH AMP ................................................................................93
SMPS .....................................................................................94
SPK ........................................................................................95
REG .......................................................................................97
FRONT_CNT ..........................................................................97
SIDE_CNT ..............................................................................98
REG_CNT ..............................................................................98
RS232C (AVR-2112CI model).................................................99
SIRIUS (AVR-2112CI model) .................................................99
FRONT .................................................................................100
FUNCTION (1912E3 model) ................................................101
USB (1912E3 model) ............................................................101
FUNCTION (Except the 1912E3 model) ...............................101
USB (Except the 1912E3 model) ..........................................101
FUNCTION CNT (1912E3 model).........................................102
FUNCTION CNT (Except the 1912E3 model).......................102
V.AUX ...................................................................................102
H/P .......................................................................................102
AUDIO_VIDEO .....................................................................103
HDMI ....................................................................................104
SCHEMATIC DIAGRAMS......................................................106
7CH-AMP UNIT (1/2) ............................................................106
7CH-AMP UNIT (2/2) ............................................................107
SPK UNIT..............................................................................108
SMPS UNIT...........................................................................109
REG UNIT .............................................................................110
SIDE_CNT UNIT ................................................................... 111
FRONT_CNT UNIT ...............................................................112
SIRIUS UNIT (AVR-2112CI ONLY) .......................................113
RS232C UNIT (AVR-2112CI ONLY)......................................113
AUDIO_VIDEO UNIT (1/3) ....................................................114
AUDIO_VIDEO UNIT (2/3) ....................................................115
AUDIO_VIDEO UNIT (3/3) ....................................................116
HDMI UNIT (1/13) .................................................................117
HDMI UNIT (2/13) .................................................................118
HDMI UNIT (3/13) ...............................................................119
HDMI UNIT (4/13) .................................................................120
HDMI UNIT (5/13) ...............................................................121
HDMI UNIT (6/13) .................................................................122
HDMI UNIT (7/13) .................................................................123
HDMI UNIT (8/13) .................................................................124
HDMI UNIT (9/13) .................................................................125
HDMI UNIT (10/13) .............................................................126
HDMI UNIT (11/13)................................................................127
HDMI UNIT (12/13) ...............................................................128
HDMI UNIT (13/13) ...............................................................129
FRONT UNIT.........................................................................130
V.AUX UNIT ..........................................................................130
FUNCTION_CNT UNIT.........................................................130
FUNCTION UNIT ..................................................................130
H/P UNIT...............................................................................130
USB UNIT..............................................................................131
WIRING DIAGRAM................................................................132
EXPLODED VIEW..................................................................133
PARTS LIST OF EXPLODED VIEW......................................135
PACKING VIEW .....................................................................138
PARTS LIST OF PACKING & ACCESSORIES.....................138
SEMICONDUCTORS .............................................................140
1. IC's ....................................................................................140
2. FL DISPLAY.......................................................................171
PARTS LIST OF P.C.B. UNIT ................................................173
PCB 7CH_AMP ASS'Y..........................................................173
PCB SPK ASS'Y....................................................................177
PCB REG_CNT ASS'Y..........................................................180
PCB FRONT ASS'Y...............................................................182
PCB AUDIO_VIDEO ASS'Y ..................................................185
PCB HDMI ASS'Y..................................................................188

3
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

4
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
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

5
TECHNICAL SPECIFICATIONS s
nAudio Section
• Poweramplier
Rated output :
Front :
90 W + 90 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
125 W + 125 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Center :
90 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
125 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Surround :
90 W + 90 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
125 W + 125 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Surround back:
90 W + 90 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
125 W + 125 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Output connectors : 6 – 16 Ω
• Analog
Input sensitivity/Input impedance : 200 mV/47 kΩ
Frequency response: 10 Hz – 100 kHz — +1, –3 dB (DIRECT mode)
S/N : 100 dB (IHF–A weighted, DIRECT mode)
nVideo section
• Standard video connectors
Input/output level and impedance : 1 Vp-p, 75 Ω
Frequency response : 5 Hz – 10 MHz — 0, –3 dB
nTuner section
[FM](Note: μV at 75 Ω, 0 dBf = 1 x 10–15 W)
Receiving Range (for E3 model) :
[FM] 87.5 MHz – 107.9 MHz [AM]520 kHz – 1710 kHz
Receiving Range (for E2, EA, E1C model) :
[FM] 87.5 MHz – 108.0 MHz [AM]522 kHz – 1611 kHz
Usable Sensitivity :
[FM]1.2 μV (12.8 dBf) [AM]18 μV
50 dB Quieting Sensitivity (for E3 model) :
[FM]MONO 2.8 μV (20.2 dBf)
50 dB Quieting Sensitivity (for E2, EA, E1C model) :
[FM]MONO 2.0 μV (17.3 dBf)
STEREO 34.5μV(42dBf) f
S/N (IHF-A) (for E3 model) :
[FM]MONO 70 dB
STEREO 67 dB
S/N (IHF-A) (for E2, EA, E1C model) :
[FM]MONO 72 dB (DIRECT mode)
STEREO 67 dB (DIRECT mode)
Total harmonic Distortion (at 1 kHz) (for E3 model) :
[FM]MONO 0.7 %
STEREO 1.0 %
Total harmonic Distortion (at 1 kHz) (for E2, EA, E1C model) :
[FM]MONO 0.3 %
STEREO 0.7 %
nGeneral
Power supply (for E3 model) : AC 120 V, 60 Hz
Power supply (for E2, EA model) : AC 230 V, 50/60 Hz
Power supply (for E1C model) : AC 220 V, 50 Hz
Power consumption :
460 W
0.1 W (Standby)
3 W (CEC standby)
Maximum external dimensions (for 1912E3 model) :
435 (W) x 162 (H) x 382 (D) mm
Weight : 10.2 kg
Maximum external dimensions
(for 1912E2,EA,E1C,2112CIE3 model) :
435 (W) x 167 (H) x 382 (D) mm
Weight : 10.3 kg
nRemote Control Unit (RC-1156)
Batteries : R6/AA Type (two batteries)
Maximum external dimensions : 53 (W) x 224 (H) x 28 (D) mm
Weight : 160 g (including batteries)
53.8 213.9
162.0
146.0
16.0
344.0
245.0
22.0
382.0
21.5
338.5
30.5 86.0 30.5
43.5
435.0
DIMENSION
[AVR-1912E3 model]

6
53.8 213.9
167.0
151.0
16.0
344.0
22.0
382.0
21.5
338.5
35.5 86.0 30.5
43.5
435.0
245.0
[AVR-1912E2/EA/E1C,2112CIE3 model] s

7
CAUTIONS IN SERVICING
Initializing INTEGRATED NETWORK AV RECEIVER
INTEGRATED NETWORK AV RECEIVER initialization should be performed when the μcom, peripheral parts of μcom,
and Digital P.W.B. were replaced.
1. Turn off the power pressing ON/STANDBY button.
2. Press ON/STANDBY button while simultaneously while pressing PRESET CHANNEL 2 and PRESET CHANNEL 3
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.
[AVR-1912E3 model]
[AVR-1912E2/EA/E1C,2112CIE3 model] s
Service Jig
When you repair the printing board, you can use the following JIG (Extension cable kit).
Please order it from Denon Ofcial Service Distributor in your region if necessary.
8U-110084S : EXTENSION UNIT KIT : 1 Set
(Refer to 43 page.)
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 it from Denon Ofcial Service Distributor in your region if necessary.
8U-210100S : WRITING KIT : 1 Set
(Refer to 45 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
PRESET CHANNEL 2
PRESET CHANNEL 3
ON/STANDBY
PRESET CHANNEL 2
PRESET CHANNEL 3

8
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 re-assembling, observe "attention of assembling".
• 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.
s
FRONT PANEL ASSY
Refer to "DISASSEMBLY
1. FRONT PANEL ASSY"
and "EXPLODED VIEW"
PCB H/P
(Ref. No. of EXPLODED VIEW : P1)
PCB FUNCTION
(Ref. No. of EXPLODED VIEW : P2)
PCB FUNCTION_CNT
(Ref. No. of EXPLODED VIEW : P3)
PCB FRONT
(Ref. No. of EXPLODED VIEW : P4)
PCB V.AUX
(Ref. No. of EXPLODED VIEW : P5)
PCB USB
(Ref. No. of EXPLODED VIEW : P6)
RADIATOR ASSY
Refer to "DISASSEMBLY
8. RADIATOR ASSY"
and "EXPLODED VIEW"
PCB GUIDE_R
(Ref. No. of EXPLODED VIEW : P7)
PCB 7CH-AMP ASSY
(Ref. No. of EXPLODED VIEW : P8)
PCB GUIDE_TOP
(Ref. No. of EXPLODED VIEW : P9)
PCB GUIDE_L
(Ref. No. of EXPLODED VIEW : P10)
POWER TRANS MAIN
Refer to "DISASSEMBLY
4. POWER TRANS MAIN"
and "EXPLODED VIEW"
POWER TRANS MAIN
(Ref. No. of EXPLODED VIEW : 31)
TOP COVER
PCB HDMI
Refer to "DISASSEMBLY
3. PCB HDMI"
and "EXPLODED VIEW"
PCB HDMI ASSY
(Ref. No. of EXPLODED VIEW : P16)
PCB RS232C
(AVR-2112CI only) s
Refer to "DISASSEMBLY
2. PCB RS232C"
and "EXPLODED VIEW"
PCB RS232C
(Ref. No. of EXPLODED VIEW : P15)
PCB SIRIUS
(Ref. No. of EXPLODED VIEW : P17)
PCB SMPS/PCB SPK
Refer to "DISASSEMBLY
6. PCB SMPS/PCB SPK"
and "EXPLODED VIEW"
PCB SMPS
(Ref. No. of EXPLODED VIEW : P18)
PCB SPK
(Ref. No. of EXPLODED VIEW : P19)
PCB REG/PCB REG_CNT
Refer to "DISASSEMBLY
7. PCB REG/PCB REG_CNT"
and "EXPLODED VIEW"
PCB REG
(Ref. No. of EXPLODED VIEW : P11)
PCB REG_CNT
(Ref. No. of EXPLODED VIEW : P12)
PCB AUDIO_VIDEO ASSY f
Refer to "DISASSEMBLY
5. PCB AUDIO_VIDEO ASSY"
and "EXPLODED VIEW"
PCB AUDIO_VIDEO ASSY
(Ref. No. of EXPLODED VIEW : P13)
PCB SIDE_CNT
(Ref. No. of EXPLODED VIEW : P14)
PCB FRONT_CNT
(Ref. No. of EXPLODED VIEW : P20)

9
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 AVR-1912 E3 model.
The viewpoint of each photograph
(Shooting direction)
［View from the top］
Front side
Shooting direction: B
Shooting direction: DShooting direction: C
Shooting direction: A

10
1. FRONT PANEL ASSY
(1) Remove the screws.
(2) Cut the wire clamp band, then disconnect the connector wires and FFC cable. Remove the screws.
TOP COVER FRONT PANEL ASSY
→
Proceeding :
View from the bottom
CP1
CP101
FFC cable
STYLE PIN : Loosen
STYLE PIN : Loosen
cut
Except the
AVR-1912E3 model.
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in FRONT PANEL ASSY.
d

11
2. PCB RS232C (AVR-2112CI only)
(1) Remove the screws.
TOP COVER PCB RS232C (AVR-2112CI only)
→
Proceeding :
s
Shooting of photograph: A
Please refer to "EXPLODED VIEW" for the disassembly method of PCB RS232C.

12
3. PCB HDMI
(1) Remove the screws.
(2) Cut the wire clamp band, then disconnect the connector wires and FFC cable. Disconnect the connector board.
TOP COVER PCB RS232C (AVR-2112CI only)
→PCB HDMI →
Proceeding :
Shooting of photograph: A
CX1
CP1
CN8
Board to board
Board to board
cut
FFC cable

13
4. POWER TRANS MAIN
(1) Disconnect the connector wires, then remove the screws.
5. PCB AUDIO_VIDEO ASSY
(1) Cut the wire clamp band, then disconnect the connector wires. Remove the screws.
POWER TRANS MAIN
→
TOP COVER PCB RS232C (AVR-2112CI only)
→PCB HDMI →
Proceeding :
STYLE PIN : Loosen
CP101
CP1
CP102,104 CX102
PCB AUDIO_VIDEO ASSY
→
TOP COVER PCB RS232C (AVR-2112CI only)
→PCB HDMI →
Proceeding :
CP401
CP12
CP13B
CP13A cut
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B.
f

14
6. PCB SMPS/PCB SPK
(1) Remove the screws and CARD SPACER.
(2) Disconnect the connector wires, then remove the screws.
PCB SMPS/PCB SPK
→
PCB AUDIO_VIDEO ASSY
→
TOP COVER PCB RS232C (AVR-2112CI only)
→PCB HDMI →
Proceeding :
View from the bottom
CARD SPACER
CP1 CP405
CX102
CP403CP402

15
(3) Remove the PCB SMPS/PCB SPK from the CHASSIS, then cut the wire clamp band.
7. PCB REG/PCB REG_CNT
(1) Disconnect the connector wires, then remove the screws.
PCB SMPS
PCB SPK
cut
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B.
PCB REG/PCB REG_CNT
→
PCB SMPS/PCB SPK
→
PCB AUDIO_VIDEO ASSY
→
TOP COVER PCB RS232C (AVR-2112CI only)
→PCB HDMI →
Proceeding :
CP102
CP104

16
8. RADIATOR ASSY
(1) Remove the screws.
(2) Disconnect the connector wires and FFC cable.
TOP COVER RADIATOR ASSY
→
Proceeding :
View from the bottom
CN8
CP401 CP402 CP403 CP405
FFC cable
STYLE PIN : Loosen
cut

17
(3) Remove the screws.
Shooting direction: D
Shooting direction: C
STYLE PIN : Loosen
CP101
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in RADIATOR ASSY.

18
SPECIAL MODE
Special mode setting button (for 1912E3 model)
b No.1 - 10 : Press the ON/STANDBY button to turn on the power while pressing both the button A and the button B at the same
time.
b No.11 : Turn on the power, then press and hold down the A and B buttons for over 3 seconds.
No. Mode Button A Button B Contents
1Version display
(μcom/DSP Error Display) STATUS iPod 1Firmware versions such as Main or DSP are displayed in the FL Display. Errors are displayed when they occur. (Refer to 20 page)
2 Displaying the protection history mode STATUS NET/USB The protection history is displayed.
(Refer to 23 page)
3User Initialization mode
(Installer Setup settings are not initialized.)
PRESET
CHANNEL 2
PRESET
CHANNEL 3
Backup data initialization is carried out.
(Installer Setup settings are not initialized.)
4
Factory Initialization mode
(Installer Setup settings are also
initialized.)
PRESET
CHANNEL 1
PRESET
CHANNEL 2
Backup data initialization is carried out.
(Installer Setup settings are also initialized.)
5Mode for switching tuner frequency step
(E2 model Only) - - Change tuner frequency step to FM:200kHz/AM:10kHzSTEP
6Mode for preventing remote control
acceptance
PRESET
CHANNEL 1
INTERNET
RADIO
Operations using the remote control are rejected.
(Mode cancellation: Turn off the power and execute the same
button operations as when performing setup.)
7 Panel lock mode PRESET
CHANNEL 2
TUNER
PRESET CH +
Operations using the main unit panel buttons or the master volume
knob are rejected.
8Panel lock mode
(Master volume is not locked.)
PRESET
CHANNEL 2 NET/USB Operations using the main unit panel buttons are rejected.
9 Cancellation of panel lock mode PRESET
CHANNEL 2 SAT/CBL Panel lock mode is cancelled.
10 Diagnostic mode PRESET
CHANNEL 1 STATUS
This mode is used for conrming the Video and Audio (signal)
paths. (Troubleshooting)
The signal paths of the set can be easily conrmed after repair.
11 Remote ID Setup mode PRESET
CHANNEL 1 STATUS
When using multiple DENON AV receivers in the same room, make
this setting so that only the desired AV receiver operates.(Refer to 25
page)
NOTE:
If " REC " is displayed on the uorescent display, the set is in the special developer's mode and the RS-232C
communications are not possible.
Turn on the power, then press and hold down the "PRESET CHANNEL 2" and " STATUS " buttons for over 3 seconds to
turn off "REC" on the display. RS-232C communications are now enabled.
STATUS
iPod 1
NET/USBTUNER PRESET CH +
INTERNET RADIO
ON/STANDBY SAT/CBL
PRESET CHANNEL 1
PRESET CHANNEL 3
PRESET CHANNEL 2

19
Special mode setting button (for AVR-1912E2/EA/E1C,2112CIE3 model)
b No.1 - 10, 12 : Press the ON/STANDBY button to turn on the power while pressing both the button A and the button B at the same
time.
b No.11 : Turn on the power, then press and hold down the A and B buttons for over 3 seconds.
No. Mode Button A Button B Contents
1Version display
(μcom/DSP Error Display) STATUS iPod 1Firmware versions such as Main or DSP are displayed in the FL Display. Errors are displayed when they occur. (Refer to 20 page)
2 Displaying the protection history mode STATUS SLEEP The protection history is displayed.
(Refer to 23 page)
3User Initialization mode
(Installer Setup settings are not initialized.)
PRESET
CHANNEL 2
PRESET
CHANNEL 3
Backup data initialization is carried out.
(Installer Setup settings are not initialized.)
4
Factory Initialization mode
(Installer Setup settings are also
initialized.)
PRESET
CHANNEL 1
PRESET
CHANNEL 2
Backup data initialization is carried out.
(Installer Setup settings are also initialized.)
5Mode for switching tuner frequency step
(E2 model Only)
TUNER
PRESET CH +
TUNER
PRESET CH - Change tuner frequency step to FM:200kHz/AM:10kHzSTEP
6Mode for preventing remote control
acceptance
PRESET
CHANNEL 1
INTERNET
RADIO
Operations using the remote control are rejected.
(Mode cancellation: Turn off the power and execute the same
button operations as when performing setup.)
7 Panel lock mode PRESET
CHANNEL 2
TUNER
PRESET CH +
Operations using the main unit panel buttons or the master volume
knob are rejected.
8Panel lock mode
(Master volume is not locked.)
PRESET
CHANNEL 2 SLEEP Operations using the main unit panel buttons are rejected.
9 Cancellation of panel lock mode PRESET
CHANNEL 2 STATUS Panel lock mode is cancelled.
10 Diagnostic mode PRESET
CHANNEL 1 STATUS
This mode is used for conrming the Video and Audio (signal)
paths. (Troubleshooting)
The signal paths of the set can be easily conrmed after repair.
11 Remote ID Setup mode PRESET
CHANNEL 1 STATUS
When using multiple DENON AV receivers in the same room, make
this setting so that only the desired AV receiver operates.(Refer to 25
page)
12 Installer Setup mode
(AVR-2112CI model only) SHIFT STATUS
Access the Remote Maintenance mode via the internet.Installer
Setup is displayed on GUI/Option Menu.
bRefer to AVR_RemoteMaintenance_.pdf of SDI.
NOTE:
If " REC " is displayed on the uorescent display, the set is in the special developer's mode and the RS-232C
communications are not possible.
Turn on the power, then press and hold down the "PRESET CHANNEL 2" and " STATUS " buttons for over 3 seconds to
turn off "REC" on the display. RS-232C communications are now enabled.
s
STATUS
iPod 1
SLEEPSHIFT
TUNER PRESET
CH +
TUNER PRESET
CH -
ON/STANDBY
INTERNET
RADIO PRESET
CHANNEL 1
PRESET
CHANNEL 3
PRESET
CHANNEL 2

20
1. µcom/DSP Version display mode
1.1. Operationspecications
µcom/DSP version display mode:
When the set is started up in this mode, the version information is displayed.
Starting up:
Press the "ON/STANDBY" button to turn on the power while pressing the "STATUS" and "iPod 1" buttons.
Now, press the "STATUS" button to the display the 2nd item information on the FL Display.
b When the version is displayed on the FL Display, the version list is also displayed on the OSD.
1.2. Display Order
Error information(Refer to 1.3. Error display) → q Model destination information → w Firmware Package Version
→ e Main µ-com → r Main 1st Boot Loader → t DSP ROM → y Audio PLD → u OSD SFLASH
→ *i Ethernet(DM860) 1st Boot Loader, Hardware ID → *o Ethernet(DM860) 2nd Boot Loader, Rhapsody Flag
→ *Q0 Ethernet(DM860) IMAGE → *Q1 Ethernet(DM860)MAC ADDRESS information → Q2 iPod Version
qModel destination information :
Model FLD
AVR-1912 E3 model AVR1912 E3 :****
AVR-1912 E2/EA model AVR1912 E2/EA
AVR-1912 E1C model AVR1912 E1C
AVR-2112CI E3 model AVR2112 E3
w Firmware Package Version :
FLD
Firm ver. :****
eMain µ-com :
FLD
Main :********
r Main 1st Boot Loader :
FLD
M a i n F B L : * * . * *
tDSP ROM :
FLD
D S P : * * . * *
y Audio PLD :
FLD
Audio PLD:**.**
u OSD SFLASH :
Model FLD
AVR-1912 E3 model OSD :4918****
AVR-1912 E2/EA model OSD :4912****
AVR-1912 E1C model OSD :4915****
AVR-2112CI E3 model OSD :4911****
s
d
s