- 1-3 -
NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnet-
ism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1M
Ω
)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent sta-
tic electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
CLEARING MALFUNCTION
You can reset your unit to initial status if malfunction occur(button malfunction, display, etc.).
Using a pointed good conductor(such as driver), simply short the RESET jump wire on the inside of
the volume knob for more than 3 seconds.
If you reset your unit, you must reenter all its settings(stations, clock, timer)
NOTE: 1. To operate the RESET jump wire, pull the volume rotary knob and release it.
2. If you wish to operate the RESET jump wire, it is necessary to unplug the power cord.
Resistor
(1 Mohm)
Conductive
Sheet
Resistor
(1 Mohm)
Armband
RESET jump wire
VOLUME
VOLUME KNOB
DOWN
UP
Summary of Contents for LX-D2640
Page 7: ... 1 6 MEMO ...
Page 22: ... 3 1 SECTION 3 DVD PART DVD ELECTRICAL TROUBLESHOOTING GUIDE 1 Power check flow ...
Page 23: ... 3 2 2 Test debug flow ...
Page 24: ... 3 3 ...
Page 25: ... 3 4 ...
Page 26: ... 3 5 ...
Page 27: ... 3 6 MEMO ...
Page 29: ... 5 2 MEMO ...
Page 30: ...2 15 2 16 BLOCK DIAGRAM ...
Page 31: ...2 17 2 18 SCHEMATIC DIAGRAM MAIN SCHEMATIC DIAGRAM ...
Page 32: ...2 19 2 20 AMP SCHEMATIC DIAGRAM ...
Page 33: ...2 21 2 22 FRONT SCHEMATIC DIAGRAM ...
Page 34: ...2 23 2 24 MIC POWER SCHEMATIC DIAGRAM ...
Page 35: ...2 25 2 26 DECK SCHEMATIC DIAGRAM ...
Page 36: ...2 27 2 28 WIRING DIAGRAM ...
Page 37: ...2 29 2 30 PRINTED CIRCUIT DIAGRAM MAIN P C BOARD DIAGRAM SOLDER SIDE ...
Page 38: ...2 31 2 32 MAIN P C BOARD DIAGRAM COMPONENT SIDE ...
Page 39: ...2 33 2 34 PRINTED CIRCUIT DIAGRAM AMP P C BOARD DIAGRAM SOLDER SIDE ...
Page 40: ...2 35 2 36 AMP P C BOARD DIAGRAM COMPONENT SIDE ...
Page 41: ...2 37 2 38 FRONT P C BOARD DIAGRAM SOLDER SIDE ...
Page 42: ...2 39 2 40 FRONT P C BOARD DIAGRAM COMPONENT SIDE ...
Page 43: ...2 41 2 42 MIC P C BOARD DIAGRAM ...
Page 44: ...2 43 2 44 POWER P C BOARD DIAGRAM ...
Page 45: ...2 45 2 46 MEMO MEMO ...
Page 46: ...3 7 3 8 SCHEMATIC DIAGRAM MPEG SCHEMATIC DIAGRAM SECTION 3 DVD PART ...
Page 47: ...3 9 3 10 RF SERVO SCHEMATIC DIAGRAM ...
Page 48: ...3 11 3 12 I O SCHEMATIC DIAGRAM ...
Page 49: ...3 13 3 14 PRINTED CIRCUIT DIAGRAM MIAN P C BOARD DIAGRAM SOLDER SIDE ...
Page 50: ...3 15 3 16 MIAN P C BOARD DIAGRAM COMPONENT SIDE ...