Denon AVR-1712, Service Manual

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2
CONTENTS
SAFETY PRECAUTIONS ..........................................................3
NOTE FOR SCHEMATIC DIAGRAM .........................................4
TECHNICAL SPECIFICATIONS ................................................5
DIMENSION ...............................................................................5
CAUTIONS IN SERVICING .......................................................6
Initializing AV SURROUND RECEIVER ....................................6
Service Jig ................................................................................6
DISASSEMBLY ..........................................................................7
1. FRONT PANEL ASSY
...........................................................9
2. PCB HDMI ...........................................................................10
3. POWER TRANS MAIN
........................................................11
4. PCB AUDIO_VIDEO ASSY
.................................................11
5. PCB SMPS/PCB SPK .........................................................12
6. PCB REG/PCB REG_CNT
..................................................13
7. RADIATOR ASSY
................................................................14
SPECIAL MODE ......................................................................16
Special mode setting button ....................................................16
1. µcom/DSP Version display mode ........................................17
2. Errors checking mode (Displaying the protection history) ...19
3. Remote ID Setup mode .......................................................21
4. DIAGNOSTIC MODE
(Video/Audio (signal) path confirmation mode)
...................23
BLOCK DIAGRAM ...................................................................25
JIG FOR SERVICING ..............................................................39
WHEN THE MICROPROCESSOR IS REPLACED WITH A
NEW ONE
................................................................................41
PROCEDURE FOR UPGRADING THE VERSION OF THE
FIRMWARE ..............................................................................41
1. How to update by DFW
.......................................................41
ADJUSTMENT .........................................................................45
SURROUND MODES AND PARAMETERS ............................46
TROUBLE SHOOTING ............................................................50
1. POWER ...............................................................................50
2. Analog video ........................................................................51
3. HDMI/DVI ............................................................................56
4. AUDIO .................................................................................61
5. SMPS ..................................................................................64
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK .............68
LEVEL DIAGRAM ....................................................................69
PRINTED WIRING BOARDS ...................................................75
7CH AMP ................................................................................75
SPMS .....................................................................................76
SPK ........................................................................................77
REG .......................................................................................79
FRONT_CNT
..........................................................................79
SIDE_CNT
..............................................................................80
REG_CNT
..............................................................................80
FRONT
...................................................................................81
FUNCTION
..............................................................................82
FUNCTION CNT
.....................................................................82
V.AUX .....................................................................................82
H/P .........................................................................................82
AUDIO_VIDEO ......................................................................83
HDMI ......................................................................................84
SCHEMATIC DIAGRAMS ........................................................86
7CH-AMP UNIT (1/2)
..............................................................86
7CH-AMP UNIT (2/2)
..............................................................87
SPK
UNIT
................................................................................88
SMPS UNIT
.............................................................................89
REG UNIT
...............................................................................90
SIDE_CNT UNIT
.....................................................................91
FRONT_CNT UNIT
.................................................................92
SIRIUS UNIT (AVR-2112CI ONLY)
.........................................93
RS232C UNIT (AVR-2112CI ONLY)
........................................93
AUDIO_VIDEO UNIT (1/3)
......................................................94
AUDIO_VIDEO UNIT (2/3)
......................................................95
AUDIO_VIDEO UNIT (3/3)
......................................................96
HDMI UNIT (1/13)
...................................................................97
HDMI UNIT (2/13)
...................................................................98
HDMI UNIT (3/13)
...................................................................99
HDMI UNIT (4/13)
.................................................................100
HDMI UNIT (5/13)
.................................................................101
HDMI UNIT (6/13)
.................................................................102
HDMI UNIT (7/13)
.................................................................103
HDMI UNIT (8/13)
.................................................................104
HDMI UNIT (9/13)
.................................................................105
HDMI UNIT (10/13)
...............................................................106
HDMI UNIT (11/13)
................................................................107
HDMI UNIT (12/13)
...............................................................108
HDMI UNIT (13/13)
...............................................................109
FRONT UNIT
.........................................................................110
V.AUX UNIT
..........................................................................110
FUNCTION_CNT UNIT
.........................................................110
FUNCTION UNIT
..................................................................110
H/P UNIT
...............................................................................110
WIRING DIAGRAM ................................................................ 111
EXPLODED VIEW ..................................................................112
PARTS LIST OF EXPLODED VIEW ......................................113
PACKING VIEW .....................................................................115
PARTS LIST OF PACKING & ACCESSORIES .....................115
SEMICONDUCTORS .............................................................117
1. IC's ....................................................................................117
2. FL DISPLAY
.......................................................................142
PARTS LIST OF P.C.B. UNIT ................................................144
PCB 7CH_AMP ASS'Y
..........................................................144
PCB SPK ASS'Y
....................................................................148
PCB REG_CNT ASS'Y
..........................................................151
PCB FRONT ASS'Y
...............................................................153
PCB AUDIO_VIDEO ASS'Y
..................................................155
PCB HDMI ASS'Y
..................................................................157