CONTENTS
Page
Number
SPECIFICATIONS .....................................................................1
CLEANING AND LUBRICATION...........................................1
TEST EQUIPMENT REQUIREMENTS ...................................2
THE SERVICE FIXTURE .........................................................2
PATH FIXTURE CONNECTION/
TEST POINT IDENTIFICATION ........................................3
LEADLESS (CHIP) COMPONENT
REMOVAL INSTRUCTION................................................3
LEADLESS (CHIP) COMPONENT INDENTIFICATION ......5
ABBREVIATIONS.....................................................................6
INSTRUMENT DISASSEMBLY ..............................................8
DESCRIPTION OF THE MECHANISM ................................12
ASSEMBLY DIAGRAM AND A/S ......................................14
DISASSEMBLY AND REPLACEMENT ..............................20
MECHANICAL ADJUSTMENT ............................................26
ADJUSTMENT OF THE TAPE TRANSPORT SECTION ....29
EXPLODED VIEW .................................................................35
ELECTRICAL ADJUSTMENT ...............................................40
WAVEFORMS .........................................................................42
VOLTAGE CHARTS
SERVO/SYSCON/TIMER MI-COM .......................................46
IC EEPROM/SYNC SRPA/RESET/TR ..................................47
IC DRIVER/SWITCH .............................................................48
VIDEO(LUMA/CHROMA) AND LINEAR AUDIO ..............49
VIDEO SWITCHING IC VOLTAGE CHARTS .....................50
HIFI AUDIO IC ........................................................................51
AUDIO SWITCHING IC .........................................................51
TMI ...........................................................................................52
IC CODEC CS4228 .................................................................52
AMP MI-COM..........................................................................53
AMP DDX-8000 ......................................................................55
AMP DDX-2100 ......................................................................61
IC SMPS/FET/PHOTO COUPLER/REGULATOR/TR ..........70
TROUBLESHOOTING GUIDES
POWER CIRCUIT....................................................................72
SYSTEM CIRCUIT ..................................................................73
VIDEO CIRCUIT ....................................................................78
AUDIO CIRCUIT .....................................................................82
SCHEMATIC
POWER SUPPLY SCHEMATIC DIAGRAM............................ 98
SERVO & SYSCON SCHEMATIC DIAGRAM
(DVD COMBO RECEIVER) .......................................................99
VIDEO/AUDIO SCHEMATIC DIAGRAM
(DVD COMBO RECEIVER) ............................................100
Hi-Fi & S/W & PIF & MPX SCHEMATIC DIAGRAM
(DVD COMBO RECEIVER) .........................................................101
DIGITAL AUDIO/VIDEO SCHEMATIC DIAGRAM
(DVD COMBO RECEIVER) .....................................................102
RECEIVER FRONT PART SCHEMATIC DIAGRAM............103
DIGITAL AMP SCHEMATIC DIAGRAM .............................104
DVD SCHEMATIC DIAGRAM ...............................................105
BLOCK DIAGRAM
RECEIVER SERVO & SYSCON BLOCK DIAGRAM ................110
COMBO RECEIVER VIDEO BLOCK DIAGRAM .......................111
NORMAL AUDIO BLOCK DIAGRAM ..........................................112
Hi-Fi &SW & PIF BLOCK DIAGRAM ...........................................113
DIGITAL AUDIO BLOCK DIAGRAM ...........................................114
AMP BLOCK DIAGRAM ..................................................................115
CIRCUIT BOARD INDEX
MAIN PCB ...........................................................................................116
POWER/LOGIC PCB .................................................................117
AMP PCB ..............................................................................................118
ELECTRICAL PARTLIST..............................................................119
Summary of Contents for DR-C912B
Page 13: ...11 INSTRUMENT DISASSEMBLY...
Page 37: ...35 EXPLODED VIEW 6 1 EXPLODED VIEW OF DECK ASS Y TOP VIEW...
Page 38: ...36 EXPLODED VIEW 6 2 EXPLODED VIEW OF DECK ASS Y BOTTOM VIEW...
Page 39: ...37 EXPLODED VIEW 6 3 EXPLODED VIEW OF FL ASS Y...
Page 40: ...38 EXPLODED VIEW D0040 D0040 D0020 D0050 D0010 D0060 D0070...
Page 41: ...39 EXPLODED VIEW REMARK PART NAME N O Q TY PART NO MATERIAL...
Page 42: ...40 ELECTRICAL ADJUSTMENT Fig 1 Main board test point control location guide component...
Page 44: ...42 WAVEFORMS VIDEO WAVEFORMS 480 4 6 20 34...
Page 46: ...44 WAVEFORMS 24 25 26 27 31 30 29 28 SERVO WAVEFORMS...
Page 101: ...SERVO SYSCON SCHEMATIC DIAGRAM DVD COMBO RECEIVER 99 SCHEMATIC DIAGRAM...
Page 102: ...100 SCHEMATIC DIAGRAM VIDEO AUDIO SCHEMATIC DIAGRAM DVD COMBO RECEIVER...
Page 103: ...Hi Fi S W PIF MPX SCHEMATIC DIAGRAM DVD COMBO RECEIVER 101 SCHEMATIC DIAGRAM...
Page 104: ...DIGITAL AUDIO VIDEO SCHEMATIC DIAGRAM DVD COMBO RECEIVER 102 SCHEMATIC DIAGRAM...
Page 105: ...RECEIVER FRONT PART SCHEMATIC DIAGRAM 103 SCHEMATIC DIAGRAM...
Page 106: ...104 SCHEMATIC DIAGRAM DIGITAL AMP SCHEMATIC DIAGRAM...
Page 111: ...109 SCHEMATIC DIAGRAM DVD SCHEMATIC DIAGRAM 5 VIDEO AUDIO...
Page 112: ...110 BLOCK DIAGRAM RECEIVER SERVO SYSCON BLOCK DIAGRAM...
Page 113: ...111 BLOCK DIAGRAM COMBO RECEIVER VIDEO BLOCK DIAGRAM...
Page 114: ...NORMAL AUDIO BLOCK DIAGRAM 112 BLOCK DIAGRAM...
Page 116: ...114 BLOCK DIAGRAM DIGITAL AUDIO BLOCK DIAGRAM...
Page 117: ...AMP BLOCK DIAGRAM 115 BLOCK DIAGRAM...
Page 118: ...MAIN PCB CIRCUIT BOARD RTD300 116 CIRCUIT BOARD INDEX...
Page 119: ...117 CIRCUIT BOARD INDEX POWER LOGIC PCB CIRCUIT BOARD RTD300...
Page 120: ...118 CIRCUIT BOARD INDEX AMP PCB CIRCUIT BOARD RTD300...
Page 132: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...
