Sanyo MCD-S870F Service Manual

Also see for MCD-S870F: Service manual Instruction manual

REPLACEMENT OF CD MECHANISM.- 3. Replacement and lubrication of the pickupl Before replacement of the pickup, be sure to carefully readthe section regarding the pickup when the unit is moved ortransported.(1) Remove the a pickup rail (CM2) with care fixing the latchwith way driver from bottom part of chassis (CM3-1 ).(2) The pickup (CM9) can now be remove once the a pickuprail (CM2) have been taken out.l When removing or inserting the a pickup rail from or intochassis, take care not to exert excessive force.l If the pickup is reconditioned of replaced, be sure to wipethe rails clean and also apply a coating of FLOIL (G-474B)to there entire circumference and entire length. When ap-plying the grease, do not allow any grease to adhere toany other parts.(3) Pass the a pickup rail (CM2) through the new pick up(CM9).l The pickup P. W. Board pattern is “shorted”, as shown inthe figure, so that the new pickup will not be susceptibleto the effects of static.l Set the pattern to “’open” after the pickup has been re-placed.‘“v! J:c”SHORT4. Checking the action of the CD mechanism 5. Replacement of the sled motor(1) Disconn~ct the socket (for the sled motor power supply) (1) Remove the two screw (CYI ) and remove the sled motor. .from the P. W. Board. (CM5).(2) APPIY a voltage of DC 2.0 V to the sled motor’s terminal.(3) Measure the current during sled motor operation.l The direction of movement of the pickup (outer groove orinner groove) can changed by changing the battery polar-ity.(4) The current during sled motor action varies according to CM3-1the positional relationshiping of gears (CM7 and CM8).(5) If the current exceeds 40 mA, remove the gears (CM7 andCM8).(6) APPIY a small amount of a FLOIL (G-474B) bonding materi-als to the chassis shafts.-6-