Denon AVR-1912

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