2.2 PERIODIC MAINTENANCE AND SERVICE
SCHEDULE
2.2.1) Periodic maintenance and Service Schedule
A. In order to effectively maintain the excellent performance and
fully utilize the features of this apperatus and to lengthen the life
of mechanism and tapes, we strongly urge you to perform
the periodic maintenance and inspection as described below.
¥ Following should be done after the substition of parts of deck or
correction of deck failure.
B. Cleaning of the DRUM TOTAL ASS‘Y
- Slowly turnning DRUM TOTAL ASS‘Y, wipe the drum surface
with clean cloth soaked in alchol. (Don t connect the power when
turnning the UPPER DRUM)
- Don t wipe the Head-Tip vertically with cleaning cloths.
C. Tape transporting section cleaning
- Clean the tape transporting section with clean cloth soaked in
alchol.
D. Driving section cleaning
- Clean the driving section with clean cloth soaked in alchol.
E. Everyday inspection
- Perform the maintenance and inspection periodically according
to the number of use.
- Refer to the table 2.2.3.
2.2.2) Cleaning and Lubrication
A. Cleaning of Tape Transporting section and driving section
a. Cleaning of Tape Transporting section
- The following parts shoule be cleaned after every 500 hours
of use.
¥ TENSION POLE
¥ S SLANT POLE
¥ AC HEAD/AE HEAD
¥ GUIDE POST
¥ VIDEOHEAD / DRUM
¥ T GUIDE POST
¥ FE HEAD
¥ T SLANT POLE
¥ CAPSTASN SHAFT
¥ S GUIDE ROLLER
¥ T GUIDE ROLLER
¥ PINCH ROLLER
- Because the above part contact with video tape, they tend
to be stained with dusts and foreign substances which make
the bad effect on the picture and sometimes lead to the tape
damage.
- Be sure to check the remained alchol during cleaning evapo-
rated thoroughly before using a tape.
b. Cleaning of the driving section
¥ REEL TABLE
¥ CAPSTAN FLYWHEEL/PULLEY
¥ REEL PULLEY
B. Lubrication
¥ REEL GEAR POST : After the cleaning the parts with alchol,
lubricate them with one or twol drops of ool
¥ S/T REEL TABLE POST : After the cleaning the parts with alchol,
lubricate them with grease.
17
ASSEMBLY DIAGRAM AND A/S
2.2.3) Service Sechedule for each parts
Following parts should be checked according to the recommanded intervals
: Check and replace if necessary.
: Replace
Period Service (Hours)
PART Name
1000
2000
3000
4000
5000
DRUM TOTAL ASS Y
CAPSTAN MOTOR
L/C BRKT TOTAL ASS Y
REEL BELT
IDLER PLATE TOTAL ASS Y
REEL TABLE
T BRAKE ASS Y
TENSION BAND ASS Y
PINCH ROLLER ASS Y
AC HEAD ASS Y
FE HEAD
REEL BRKT TOTAL ASS Y
NOTE:
Independant of the above service shedule, Cleaning and lubrication and replacement of the belt sould be undertaken every 2 years.
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...