Denon AVR-2312 Service Manual

2
CONTENTS
SAFETY PRECAUTIONS ..........................................................3
NOTE FOR SCHEMATIC DIAGRAM
.........................................4
TECHNICAL SPECIFICATIONS
...............................................5
DIMENSION
...............................................................................5
CAUTIONS IN SERVICING
.......................................................6
Initializing INTEGRATED NETWORK AV RECEIVER ..............6
Service Jig .................................................................................6
DISASSEMBLY
..........................................................................7
1. FRONT PANEL ASSY ...........................................................9
2. HEAT SINK ASSY ...............................................................10
3. HDMI UNIT ASSY ................................................................12
4. TRANS MAIN ......................................................................15
SPECIAL MODE
......................................................................16
Special mode setting button ....................................................16
1. µcom/DSP Version display mode ........................................17
2. Errors checking mode (Displaying the protection history) ...20
3. Remote ID Setup mode .......................................................22
PROTECTION DIAGRAM
........................................................23
4. DIAGNOSTIC MODE
(Video/Audio (signal) path conrmation mode) .......................24
BLOCK DIAGRAM
...................................................................29
JIG FOR SERVICING
..............................................................59
WHEN THE MICROPROCESSOR IS REPLACED
WITH A NEW ONE
...................................................................63
PROCEDURE FOR UPGRADING
THE VERSION OF THE FIRMWARE
......................................63
ADJUSTMENT
.........................................................................70
SURROUND MODES AND PARAMETERS
............................71
TROUBLE SHOOTING
............................................................75
1. POWER ...............................................................................75
2. Analog video ........................................................................76
3. HDMI/DVI ............................................................................82
4. AUDIO .................................................................................91
5. Network/USB .......................................................................94
6. SMPS ..................................................................................97
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK
...........100
LAEVEL DIAGRAM
...............................................................101
PRINTED WIRING BOARDS
.................................................107
7CH AMP (COMPONENT SIDE) ..........................................107
7CH AMP (FOIL SIDE) ..........................................................107
SPMS (COMPONENT SIDE) ................................................108
SMPS (FOIL SIDE) ...............................................................108
SPK_PREOUT (COMPONENT SIDE) ..................................109
SPK_PREOUT (FOIL SIDE) .................................................110
INPUT (COMPONENT SIDE) ...............................................111
INPUT (FOIL SIDE) ............................................................... 112
FUSE (COMPONENT SIDE).................................................113
RS232C_CNT (COMPONENT SIDE) ...................................113
FUSE (FOIL SIDE) ................................................................113
RS232C_CNT (FOIL SIDE) ...................................................113
POSISTOR (COMPONENT SIDE) ........................................113
POSISTOR (FOIL SIDE) .......................................................113
FRONT (COMPONENT SIDE) .............................................. 114
V.AUX (FOIL SIDE) ...............................................................114
FRONT (FOIL SIDE) .............................................................114
V.AUX (COMPONENT SIDE) ................................................114
HDMI FFC (COMPONENT SIDE) .........................................115
GUIDE TOP (COMPONENT SIDE).......................................115
GUIDE L (COMPONENT SIDE) ............................................ 115
HDMI FFC (FOIL SIDE) ........................................................115
GUIDE TOP (FOIL SIDE) ......................................................115
GUIDE L (FOIL SIDE) ...........................................................115
USB (COMPONENT SIDE) ................................................... 115
HP (COMPONENT SIDE) .....................................................115
GUIDE R (COMPONENT SIDE) ...........................................115
USB (FOIL SIDE) ..................................................................115
HP (FOIL SIDE) .....................................................................115
GUIDE R (FOIL SIDE) ...........................................................115
SELECTOR (COMPONENT SIDE)
....................................... 116
RS232C (COMPONENT SIDE).............................................116
SELECTOR (FOIL SIDE) ......................................................116
RS232C (FOIL SIDE) ............................................................116
SIDE_CNT (COMPONENT SIDE) ........................................117
SIDE_CNT (FOIL SIDE) ........................................................ 117
VIDEO (COMPONENT SIDE) ...............................................118
VIDEO (FOIL SIDE) ..............................................................119
FRONT CNT (COMPONENT SIDE) .....................................120
FRONT CNT (FOIL SIDE) .....................................................121
HDMI (COMPONENT SIDE) .................................................122
HDMI (FOIL SIDE) ................................................................123
SCHEMATIC DIAGRAMS
......................................................124
USB UNIT..............................................................................124
FRONT UNIT .........................................................................124
AMP UNIT (1/2) .....................................................................125
AMP UNIT (2/2) .....................................................................126
SPK/PREOUT/REG UNIT (1/4).............................................127
SPK/PREOUT/REG UNIT (2/4).............................................128
SPK/PREOUT/REG UNIT (3/4).............................................129
FRONT_CNT UNIT ...............................................................130
CNT/RS232C UNIT (1/4).......................................................131
CNT/RS232C UNIT (2/4).......................................................132
CNT/RS232C UNIT (3/4).......................................................133
CNT/RS232C UNIT (4/4).......................................................134
INPUT UNIT ..........................................................................135
VIDEO UNIT ..........................................................................136
SMPS UNIT
...........................................................................137
DIGITAL UNIT (1/16) .............................................................138
DIGITAL UNIT (2/16) .............................................................139
DIGITAL UNIT (3/16) .............................................................140
DIGITAL UNIT (4/16) .............................................................141
DIGITAL UNIT (5/16) .............................................................142
DIGITAL UNIT (6/16) .............................................................143
DIGITAL UNIT (7/16) .............................................................144
DIGITAL UNIT (8/16) .............................................................145
DIGITAL UNIT (9/16) .............................................................146
DIGITAL UNIT (10/16) ...........................................................147
DIGITAL UNIT (11/16) ...........................................................148
DIGITAL UNIT (12/16) ...........................................................149
DIGITAL UNIT (13/16) ...........................................................150
DIGITAL UNIT (14/16) ...........................................................151
DIGITAL UNIT (15/16) ...........................................................152
DIGITAL UNIT (16/16) ...........................................................153
WIRING DIAGRAM
................................................................154
EXPLODED VIEW
.................................................................155
PARTS LIST OF EXPLODED VIEW
.....................................157
PACKING VIEW
....................................................................160
PARTS LIST OF PACKING & ACCESSORIES
....................160
SEMICONDUCTORS
.............................................................162
1. IC's ....................................................................................162
2. FL DISPLAY.......................................................................193
PARTS LIST OF P.C.B. UNIT
...............................................195
PCB INPUT ASSY .................................................................195
PCB FRONT ASSY ...............................................................197
PCB 7CH AMP ASSY ............................................................200
PCB MAIN ASSY...................................................................207
PCB CNT ASSY ....................................................................211
PCB VIDEO ASSY ................................................................213
PCB HDMI ASS'Y ..................................................................215
PCB SMPS ASSY .................................................................224

Denon AVR-2312 Specifications

General

Impedance	8 Ω
Speaker selector	A+B
Input sensitivity	200 mV
Pre-out connectivity	Yes
Audio output channels	7.1 channels
Audio A/D Converter (ADC)	24-bit/96kHz
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.08 %
Power output per channel (1KHz@8 Ohm)	135 W
Power output per channel (20-20KHz@8 Ohm)	105 W
HDMI in	7
Composite video in	4
Ethernet LAN (RJ-45) ports	1
Multichannel audio input type	RCA
Component video (YPbPr/YCbCr) in	2
Headphone connectivity	6.3 mm
Connectivity technology	Wired
Speakers connectivity type	Binding post
Audio formats supported	AAC, FLAC, MP3, WAV, WMA
Image formats supported	JPG
Wi-Fi	No
AM band range	522 - 1611 kHz
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
Preset stations quantity	56
Internet radio services supported	Last.fm, Napster
Supported video modes	1080i, 1080p, 480i, 480p, 576i, 576p, 720p
Display	VFD
HDMI version	1.4a
Product color	Black
Audio decoders	Dolby Pro Logic IIz, Dolby TrueHD, DTS-HD Master Audio
Volume control	Rotary
Apple docking compatibility	iPad, iPhone, iPod
Number of products included	1 pc(s)
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.1 W
Power consumption (typical)	600 W

Weight and Dimensions

Depth	382 mm
Width	434 mm
Height	167 mm
Weight	11000 g