1
SPECIFICATIONS
Cleaning and Lubrication
A. Cleaning the Tape Transport System
The following parts should be cleaned after every 500 hours
of use.
• TENSION POLE
• S-GUIDE POST
• FE HEAD
• S GUIDE ROLLER
• S-SLANT POLE
• VIDEO HEAD/DRUM
• T-SLANT POLE
• T-GUIDE ROLLER
• AC HEAD/AE HEAD
• T-GUIDE POST
• CAPSTAN SHAFT
• PINCH ROLLER
Note: After cleaning with alcohol, allow the parts to dry thor-
oughly before using a cassette tape.
B. Cleaning the Drive System
The following parts should be cleaned after every 500 hours
of use.
• REEL TABLE
• T MAIN BRAKE
• S MAIN BRAKE
• T MAIN BRAKE
• CAPSTAN FLYWHEEL/PULLEY
• REEL PULLEY
C. Lubrication points
The following parts should be cleaned and lubricated after
every 500 hours of use. Apply one (1) or two (2) drops of oil.
Refer to the "Replacement Parts List" for the stock number of
the recommended oil.
• S REEL TABLE POST
• T REEL TABLE POST
• IDLER PULLEY
Power Input
:120 Volts AC 60Hz
audio Input
: -8.8dBm
Power Consumption
:95Watts
Audio output (common
Operating Temperature :5 degree C to 35 degree C
use of DVD and VCR)
: Audio output terminal (2 kinds):
( 41 degree F to 95 degree F)
-8.8dBm(VCR), 2.0Vrms(DVD)
Storage Temperature
: -30 degree C to 65 degree C
Audio output (DVD only) : Analogue Audio output(2CH):2.0Vrms
(-22 degree F to 149 degree F)
Installation condition
:Horizontal / Relative humidity
Audio Input Impedance
: More than 47k ohm
under 80%
Audio Output Impedance : Less than 1.5k ohm
Weight
: 6.45 kg (NET)
VHF output
: 3 or 4 CH
Playable tape
: Very high dense tapes with VHS marks
Dimensions
: 430mm Wide X 91mm High
Playable disc
: DVD,VIDEO-CD,CD(12mm)
X 355.5mm Deep
CD(8mm),MP3,CD-R,CD-RW
Tape Speed
: SP: 33.35mm/sec.
Recording System
SLP
: 11.12mm/sec.
4-head Hi Fi
: Four video record/playback
Maximum Recording Time: T-60: 3 hours/SLP mode
heads
T120: 6 hours/SLP mode
Rotary helical scan/luma: FM
Fast Forward/Rewind Time : <130sec (T-120 tape)
recording/chroma: converted
Tuning System
: Auto Program/Cable
subcarrier phase shifted recording
Compatible/Frequency
Two audio record/playback
Synthesis (FS)
heads
Clock display
: 12 hrs AM/PM
Rotary helical scan, 2 channels
Time Recording
: 8 programs a year
FM recording
Persistence in power
Received channels
:VHF: 2-13 CH / UHF: 14-69 CH
failure
: 1 min
/ Cable: 1-125
Video S/N (VCR)
: Over 45dB(Standard recording)
Video Signal
: EIA standard; NTSC color
Resolution (VCR)
: Over 220 lines (Standard recording)
Antenna
: 75 ohm input impedance
Resolution (DVD)
: Over 500 lines (DVD Disc PLAY)
Video Signal Level
: 1Vp-p (140 IRE standard)
Audio (VCR)
: Over 68dB(Hi-Fi),over 40dB(Mono)
Video output (common use of DVD and VCR):
Audio (DVD)
: 100dB
VIDEO output terminal,
Audio dynamic range
: 70dB
1Vp-p (140 IRE standard)
Video output (DVD only):S-VIDEO output
(75 ohm In load Y: 1Vp-p, C:0.286Vp-p)
COMPONENT Progressive output
(75 ohm In load Y:1Vp-p, Pb:0.7Vp-p Pr:0.7Vp-p)
Note
: Specifications are subject to change without notice.
CLEANING AND LUBRICATION
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...