ABOUT THIS MANUAL
.............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
SAFETY PRECAUTIONS
..........................................................6
NOTE FOR SCHEMATIC DIAGRAM
.........................................7
NOTE FOR PARTS LIST
...........................................................7
TECHNICAL SPECIFICATIONS
................................................9
DIMENSION
...............................................................................9
Precautions During Service
...................................................10
Initializing This Unit .................................................................10
Service Jigs .............................................................................10
DISASSEMBLY
........................................................................ 11
1. CX870 ASSY for CX870 model only ..................................14
2. FRONT PANEL ASSY ........................................................14
3. HDAM ASSY ......................................................................15
4. SMPS ASSY .......................................................................15
5. POWER TRANS ................................................................16
6. BACK PANEL ASSY ...........................................................17
SPECIAL MODE
......................................................................18
Special Mode Conîš¿guration Buttons .......................................18
1. Version Display Mode ........................................................19
2. PANEL / REMOTE LOCK Selection Mode .........................23
3. Selection Modes for Service-related Operations ................24
DIAGNOSTIC PATH DIAGRAM .........................................29
4. Additional Source mode .....................................................70
5. CX870 / CY920 Reboot Mode ............................................71
6. CX870 / CY920 Initialization Mode ....................................71
JIG FOR SERVICING
..............................................................72
Procedure after Replacing the Microprocessor, etc.
..........74
Firmware Update Procedure
..................................................74
1. Updating by USB ................................................................74
2. Updating by DPMS .............................................................84
SURROUND MODES AND PARAMETERS
............................91
TROUBLE SHOOTING
............................................................94
1. POWER ..............................................................................94
2. Analog video ......................................................................95
3. HDMI/DVI ...........................................................................97
4. AUDIO ................................................................................99
5. Network/Bluetooth/USB ...................................................101
6. SMPS ...............................................................................107
Audio Check PASS
..............................................................109
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK
...........110
LEVEL DIAGRAM
.................................................................. 111
GND DIAGRAM
.....................................................................119
POWER DIAGRAM
................................................................120
CPU DIAGRAM
......................................................................122
PRINTED WIRING BOARDS
.................................................123
SCHEMATIC DIAGRAMS (1/38)
...........................................133
SCH01_DIGITAL CONNECT ................................................133
SCH02_DIR ADC ZONEDAC ...............................................134
SCH03_AUDIO PLD .............................................................135
SCH04_DSP1 .......................................................................136
SCH05_DSP2 .......................................................................137
SCH06_DSP3 .......................................................................138
SCH07_DSP4 .......................................................................139
SCH08-1_MAIN CPU_OLD ..................................................140
SCH08-2_MAIN CPU_NEW .................................................141
SCH09_SUB CPU .................................................................142
SCH10_DECODER ...............................................................143
SCH11-1_HDMI SW1 AV8802 ONLY ....................................144
SCH11-2_HDMI SW1 AV8802A ONLY ..................................145
SCH12-1_HDMI SW2 AV8802 ONLY ....................................146
SCH12-2_HDMI SW2 AV8802A ONLY .................................147
SCH13_IP SCALER ..............................................................148
SCH14_IP SCALER DDR .....................................................149
SCH15-1_VIDEO PLD AV8802 ONLY ..................................150
SCH15-2_VIDEO PLD AV8802A ONLY ................................151
SCH16-1_HDMI RX TX AV8802 ONLY .................................152
SCH16-2_HDMI RX TX AV8802A ONLY ...............................153
SCH17-1_HDMI SUPPLY AV8802 ONLY ..............................154
SCH17-2_HDMI SUPPLY AV8802A ONLY ...........................155
SCH18-1_NETWOR AV8802 ONLY ......................................156
SCH18-2_NETWOR AV8802A ONLY_OLD ..........................157
SCH18-3_NETWOR AV8802A ONLY_NEW .........................158
SCH19-1_MAIN DAC ............................................................159
SCH19-2_MAIN DAC ............................................................160
SCH20-1_ZONEDAC ADC ...................................................161
SCH20-2_ZONEDAC ADC ...................................................162
SCH21_REAR USB ..............................................................163
SCH22_AUDIO VIDEO CONNECT ......................................164
SCH23_AUDIO VOLUME .....................................................165
SCH24_PREOUT ..................................................................166
SCH25_VIDEO SELECTOR .................................................167
SCH26_CONNECT ...............................................................168
SCH27_HDAM XLR-AMP .....................................................169
SCH28_XLR IN_REMOTE IO_232C ....................................170
SCH29_FRONT HDMI_USB .................................................171
SCH30_FRONT ....................................................................172
SCH31_HDAM CONNECT ...................................................173
SCH32_PHONO ...................................................................174
SCH33_SMPS ......................................................................175
SCH34_XLR OUT1 ...............................................................176
SCH35_XLR OUT2 ...............................................................177
SCH36_XLR OUT3 ...............................................................178
SCH37_CX870 CONNECT AV8802 ONLY ...........................179
SCH38_BT MODULE AV8802 ONLY ....................................180
EXPLODED VIEW
.................................................................181
PACKING VIEW
.....................................................................182
SEMICONDUCTORS
.............................................................183
1. IC's ...................................................................................183
2. FL DISPLAY .....................................................................205
2
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