Onkyo-KCY707-cd-sm维修电路原理图.pdf

RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 99 A C B 99 * 9925065375S it h99 25065375 Switch A 24506903 Wheel A B 24506904 Wheel B C 24502258-1 Spindle Motor 128 848 137 11TAbl (AlttPN#)12 8-848-137-11 Traverse Assembly (Alternate PN#) ONKYO USA CORPORATION 200 Williams Drive Ramsey NJ 07446 201-825-7950 Fax 201-825-8150 02/10/1999 Page 01 Model: KCY707 for PTS series Classification: Service tip: Rear of unit Front of unit If IC802 is mounted parallel to the PCB layout modification given below would be appropriate. Add 1k-ohm resistor and 10uf 16v capacitor as seen. + Side of capacitor is solder at the jumper. Capacitor is 10uf 16volt. The lead wire in series with 1k-ohm 1/4watt resistor is then soldered to a jumper closer to R604 as seen. Place a plastic tube or heat shrink tube over the resistor. Note jumper location! Negative side of capacitor is soldered on the rear side of C739 (ground) near R789. Where in some units IC802 is mounted parallel to the main chassis, the modification as shown should be done. For all others please just loosen the wire described on page 2. R604 For unit having a smaller cut at this point (magazine home position sensor hole) compared to the rest sensor cutouts; please cut (shave) the top part of the plastic with shop utility knife until the hole matches the rest. Cut jumper wire labeled XRST PAGE # 2 02/10/1999 Classification: service tip: Please note: The complete CD mechanism for the PTS series is no longer available. Order individual components for parts shown below. Place wire harness at this point for wire extending from J702. The two wires coming from J703 and J704 are connected to the PICKUP assembly. In some units these two feed wires are tied to the CD chassis and may cause some binding to the traverse gear mechanism system causing gear damage. To alleviate this problem, remove (cut) all wire ties and retie them as illustrated in picture. Give a inch play for wires connected to J703 and J704 compared to wire connected at J702. These two wires should rest flat and close to the bottom chassis of the unit without any abstraction. Spindle motor # 24502258-1 Replace Gear A with PN#24506903 clean all grease and re apply with grease Gear B PN#24506904 Make proper adjustment of sled motor gear height. Adjust height of table to 7.5mm from the chassis to the bottom of the table barrel as seen. This is a starting point only. Pick Up Part # 8-848-137-11 2-1 NISSHIN-CHO,NEYAGAWA-SHI,OSAKA 572-8540,JAPAN Techinical InformationGroup,Service Dept. SERVICE BULLETIN NO:98001-1 LAST REVISED : 99/04/21 DATE : 98/08/03MODELS : KCY-707 SUBJECT : Change of Microprocessor & Dolby IC 1. IC604(sub microprocessor) a. CXP84124-139Q (find with service manual) It has a program mistake. Please work with service bulletin no. 9602 if you use this IC. Pls find the service information Ref.9602 dated 96/11/13. b. CX84332-159Q It is improved from 9/13/97 ship. You can use it without above modification. c. CX84332-164Q (SN:1-0447-1) It is improved from 1/10/98 ship. You can use it without above modification. 2. IC802 (Dolby IC) a. BA3442BKS (find with service manual) The number of PCB assy is 33560 and 33560A. b. CXA1897Q (SN:1-0374-1) It is improved from 5701726913 of serial number. The number of PCB assy is 33563.