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. FRONT PANEL ASSY ........................................................13
2. RADIATOR ASSY ...............................................................14
3. SMPS ASSY .......................................................................15
4. POWER TRANS ................................................................16
5. BACK PANEL ASSY ...........................................................17
SPECIAL MODE
......................................................................18
Special Mode Conguration 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 .........................................31
4. Remote ID Setup Mode ......................................................74
5. Protection Pass Mode ........................................................75
6. CX870 / CY920 Reboot Mode ............................................75
7. CX870 / CY920 Initialization Mode ....................................76
JIG FOR SERVICING
..............................................................77
Procedure after Replacing the Microprocessor, etc.
..........79
Firmware Update Procedure..................................................79
1. Updating by USB ................................................................79
2. Updating by DPMS .............................................................88
ADJUSTMENT
.........................................................................95
SURROUND MODES AND PARAMETERS
............................96
TROUBLE SHOOTING
............................................................99
1. POWER ..............................................................................99
2. Analog video ....................................................................100
3. HDMI/DVI .........................................................................102
4. AUDIO ..............................................................................104
5. Network/Bluetooth/USB ...................................................107
6. SMPS ...............................................................................112
Audio Check PASS
..............................................................114
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK
...........115
LEVEL DIAGRAM
.................................................................. 116
GND DIAGRAM
.....................................................................124
POWER DIAGRAM
................................................................125
CPU DIAGRAM
......................................................................126
PRINTED WIRING BOARDS
.................................................127
SCHEMATIC DIAGRAMS (1/35 )
..........................................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_MAIN CPU ...............................................................140
SCH09_SUB CPU .................................................................141
SCH10_DECODER ...............................................................142
SCH11_HDMI SW1 ...............................................................143
SCH12_HDMI SW2 ...............................................................144
SCH13_IP SCALER ..............................................................145
SCH14_IP SCALER DDR .....................................................146
SCH15_VIDEO PLD .............................................................147
SCH16_HDMI RX TX ............................................................148
SCH17_HDMI SUPPLY .........................................................149
SCH18_NETWORK ..............................................................150
SCH19_AUDIO VIDEO CONNECT ......................................151
SCH20_AUDIO VOLUME .....................................................152
SCH21_PREOUT ..................................................................153
SCH22_VIDEO SELECTOR .................................................154
SCH23_CONNECT ...............................................................155
SCH24_ZONEDAC ADC .......................................................156
SCH25_MAIN DAC ...............................................................157
SCH26_FRONT HDMI USB ..................................................158
SCH27_SPEAKER ................................................................159
SCH28_REG .........................................................................160
SCH29_FRONT ....................................................................161
SCH30_SMPS ......................................................................162
SCH31_AMP CONNECT ......................................................163
SCH32_232C PHONO ..........................................................164
SCH33_POWER AMP...........................................................165
SCH34_CX870 CONNECT (CX870 Only) ............................166
SCH35_BT MODULE (CX870 Only) .....................................167
EXPLODED VIEW
.................................................................168
PACKING VIEW
.....................................................................169
SEMICONDUCTORS
.............................................................170
1. IC's ...................................................................................170
2. FL DISPLAY .....................................................................192
CONTENTS
2