LUXOR SP2-01-01 free download

File name SP2-01-01.pdf

Ref: 01M742, -812 Stereo Plus 2 Service Bulletin: 01-01 May -01 Chassis: Stereo Plus 2 SN- and SW-chassis with PFC circuit (Power Factor Correction) Module: Main board B****B* C****B* PFC version can be identified from a chassis code, the 6th character B means PFC version In addition the power supply controller in PFC version is a version of TDA16846 Finding: Interference over the whole screen with a poor signal level on VHF1 band Spares: Item Old part New part Part number Note 1a) CO24 2n2 400V Y 1n0 400V Y 3261 0922 1b) CO75 -- 1n0 400V Y 3261 0922 2a) RO12 15R 0805 33R 0805 3142 5808 2b) W53 Jumper 11.25mm Coil AX 4.7uH 620mA 4562 0008 2c) CO76 -- 330p 2k0V 3279 0042 Note: First please try to eliminate the interference by a ferrite antenna cable If it will not help, make the modification / modifications below Modification 1 This is the most important modification, which has been implemented in production as a running change starting from 23.01.2001. If not installed do the following. 1a) Change capacitor CO24 to a value of 1n0 400V Y. See picture 1. 1b) Install new capacitor CO75 (1n0 400V Y) as follows: - Drill a new hole according to picture 2 (can be seen also in pictures 3 and 4). - The right hole place is exactly in the corner of the printed isolation border marking. - Install capacitor as shown in picture 3. Other leg to the new hole and the other one to the hole of "not-installed CO74". - Blend the leg coming from the new hole so that you can solder it to the ground pad of the cooling plate. See picture 4. Note! Capacitors are safety components, so please pay attention to the Electricity Safety. The isolation gap between primary and secondary must be always at least 6mm. c) Check the picture quality, if interference has been disappeared, everything is now ok. Notice ! The Publisher of this Service Bulletin assumes no responsibility for any financial claims resulting from the information of this document. Note! Bigger picture and more detailed instruction by clicking the picture. Picture 1 Picture 2 Picture 3