- 4-19 -
MAINTENANCE/INSPECTION PROCEDURE
(3) F/E Head
(5) Drum Assembly
(Video Head)
(4) Base
Assembly P2
(2) Tension Post
(1) Supply Reel
(6) Base Assembly P3
1. Check before starting repairs
The following faults can be remedied by cleaning and oil-
ing. Check the needed lubrication and the conditions of
cleanliness in the unit.
Check with the customer to find out how often the unit is
used, and then determine that the unit is ready for inspec-
tion and maintenance. Check the following parts.
Phenomenon
Inspection
Replace-
ment
Color beats
Dirt on Full-Erase Head
o
Poor S/N, no color
Dirt on Video Head
Vertical or
Horizontal jitter
Dirt on Audio/Control Head
Dirt on Pinch Roller
NOTE
If locations marked with
o
do not operate normally after
cleaning, check for wear and replace.
See the EXPLODED VIEWS at the end of this manual as
well as the above illustrations and see the Greasing (Page
4-21, 22) for the sections to be lubricated and greased.
o
o
o
o
Dirt on Video Head
Dirt on tape transport system
Low volume,
Sound distorted
Tape does not run.
Tape is slack
o
In Review and
Unloading (off mode),
the tape is rolled up
loosely.
Clutch Assembly D35
torque reduced
Cleaning Drum and
transport system
Fig. C-9-3
(7) A/C Head
(8) P4 Post
(10) Pinch Roller
(11) Take-up Guide Post
(9) Capstan Shaft
(12) Take-up Reel
* No. (1)~(12) Indicates the Tape Path to be traveled from Supply Reel to Take-up Reel.
Fig. C-9-1 Top View
Fig. C-9-2 Bottom View
F/E Head
Video Head
A/C Head
Pinch Roller
Belt Capston
Clutch
Assembly D35
Fig. C-9-3 Tape Transport System
Summary of Contents for LH-C6230P
Page 10: ... 2 1 SECTION 2 AUDIO PART ...
Page 12: ... 3 2 VCR ELECTRICAL TROULBESHOOTING ...
Page 13: ... 3 3 ...
Page 27: ... 5 1 DVD ELECTRICAL TROUBLESHOOTING 1 Test debug flow SECTION 5 DVD PART ...
Page 28: ... 5 2 ...
Page 29: ... 5 3 ...
Page 30: ... 5 4 ...
Page 31: ... 5 5 ...
Page 32: ... 5 6 ...
Page 36: ... 5 10 2 Tray close waveform 3 Tray open waveform ...
Page 38: ... 5 12 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION 7 DISC TYPE JUDGEMENT WAVEFORM ...
Page 39: ... 5 13 ...
Page 40: ... 5 14 8 FOCUS ON WAVEFORM ...
Page 41: ... 5 15 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION ...
Page 42: ... 5 16 10 TRACKING CONTROL RELATED SIGNAL System checking ...
Page 43: ... 5 17 11 RF WAVEFORM 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF ...
Page 44: ... 5 18 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS 2 Y ...
Page 45: ... 5 19 3 C 14 AUDIO OUTPUT FORM AUDIO DAC 1 Audio related Signal ...
Page 46: ... 5 20 MEMO ...
Page 49: ...2 2 2 3 BLOCK DIAGRAM ...
Page 50: ...2 4 2 5 AUDIO SHEMATIC DIAGRAMS U COM SCHEMATIC DIAGRAM ...
Page 51: ...2 6 2 7 FUNCTION POWER SCHEMATIC DIAGRAM ...
Page 52: ...2 8 2 9 MAIN AMP SCHEMATIC DIAGRAM ...
Page 53: ...2 10 2 11 WIRING DIAGRAM ...
Page 55: ...2 14 2 15 PRINTED CIRCUIT DIAGRAM MAINAMP FRONT P C BOARD SOLDER SIDE ...
Page 56: ...2 16 2 17 MAINAMP FRONT P C BOARD COMPONENT SIDE ...
Page 57: ...2 18 2 19 FUNCTION POWER P C BOARD SOLDER SIDE ...
Page 58: ...2 20 2 21 FUNCTION POWER P C BOARD COMPONENT SIDE ...
Page 59: ...3 17 3 18 VCR SHEMATIC DIAGRAMS SYSTEM SCHEMATIC DIAGRAM ...
Page 60: ...3 19 3 20 A AUDIO V VIDEO SCHEMATIC DIAGRAM ...
Page 62: ...3 23 3 24 TU IF ACSS SCHEMATIC DIAGRAM ...
Page 63: ...3 25 3 26 HIFI TUNER SCHEMATIC DIAGRAM ...
Page 64: ...3 27 3 28 A V JACK SCART SCHEMATIC DIAGRAM ...
Page 66: ...3 31 3 32 PRINTED CIRCUIT DIAGRAMS TUNER P C BOARD ...
Page 67: ...3 33 3 34 VCR P C BOARD ...
Page 68: ...3 35 3 36 VCR P C BOARD ...
Page 69: ...5 22 5 21 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM ...
Page 70: ...5 23 5 24 SERVO SCHEMATIC DIAGRAM ...
Page 71: ...5 25 5 26 AUDIO SCHEMATIC DIAGRAM ...
Page 72: ...5 27 5 28 INTERFACE SCHEMATIC DIAGRAM ...
Page 73: ...5 29 5 30 VOLTAGE SHEET IC TR ...
Page 74: ...5 31 5 32 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE ...
Page 75: ...5 33 5 34 DVD P C BOARD COMPONENT SIDE ...
Page 77: ...SECTION 4 MECHANSIM OF VCR PART ...
Page 89: ... 4 12 ...
Page 101: ... 4 24 ...
Page 113: ......