Contents
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. HDMI PCB ..........................................................................15
4. VIDEO PCB ........................................................................16
5. PREOUT PCB ....................................................................16
6. MAIN PCB .........................................................................17
7. SMPS PCB .........................................................................18
8. TRANS POWER ................................................................18
SPECIAL MODE ......................................................................19
Special Mode Conguration Buttons .......................................19
1. Version Display Mode ........................................................20
2. PANEL / REMOTE LOCK Selection Mode .........................23
3. Selection Modes for Service-related Operations ................ 24
DIAGNOSTIC PATH DIAGRAM ..............................................27
4. Protection Pass Mode ........................................................51
5. CX870 / CY920 Reboot mode ............................................51
6. CX870 / CY920 Initialization mode ....................................52
JIG FOR SERVICING ..............................................................53
Procedure after Replacing the Microprocessor, etc. ..........56
Firmware Update Procedure..................................................56
1. Updating by USB ................................................................56
2. Updating by DPMS .............................................................65
ADJUSTMENT .........................................................................72
SURROUND MODES AND PARAMETERS ............................73
TROUBLE SHOOTING ............................................................75
1. POWER ..............................................................................75
2. Analog video ......................................................................76
3. HDMI/DVI ...........................................................................80
4. AUDIO ................................................................................82
5. Network/Bluetooth/USB .....................................................85
6. SMPS .................................................................................90
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK .............93
LEVEL DIAGRAM ....................................................................94
BLOCK DIAGRAM .................................................................100
POWER DIAGRAM ................................................................101
WIRING DIAGRAM ................................................................102
PRINTED WIRING BOARDS .................................................103
SCHEMATIC DIAGRAMS (1/32) ...........................................110
01-HDMI SW1 .......................................................................110
02-HDMI SW2 ....................................................................... 111
03-NET_PHY.........................................................................112
04-BlueTooth .........................................................................113
05-CPU_LEVEL_CHG ..........................................................114
06-DIGITAL_CNT ..................................................................115
07-CPU .................................................................................116
08-Sub_CPU .........................................................................117
09-FRONT_HDMI .................................................................118
10-DSP .................................................................................. 119
11-ADV8003 ..........................................................................120
12-ADV8003_DDR ................................................................121
13-D.SUPPLY ........................................................................122
14-HDMI_TX .........................................................................123
15-DIR_A.PLD ......................................................................124
16-V.PLD ...............................................................................125
17-MAIN_DAC ......................................................................126
18-ADV7850 ..........................................................................127
19-CX870JUNCTION ............................................................128
20-INPUT ..............................................................................129
21-VIDEO_ZONE2 ................................................................130
22-VIDEO_FCNT ..................................................................131
23-VIDEO_RC5 .....................................................................132
24-AMP1 ...............................................................................133
25-AMP2 ...............................................................................134
26-MAIN_SPK .......................................................................135
27-MAIN_TUNER_REG ........................................................136
28-MAIN_RS232-CNT...........................................................137
29-FRONT .............................................................................138
30-SMPS ...............................................................................139
31-HDAM ..............................................................................140
31-PREOUT ..........................................................................141
EXPLODED VIEW .................................................................142
PACKING VIEW .....................................................................143
SEMICONDUCTORS .............................................................144
1. IC's ...................................................................................144
2. FL DISPLAY .....................................................................163
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