Sony TVP0523 free download

File name TVP0523.pdf

CONFIDENTIAL CSV-1 Sony Service Company National Technical Services Service Bulletin A Division of Sony Electronics Inc. Park Ridge, New Jersey 07656 TV Products Model: KV-32XBR200, KV-36XBR200 No. 523 Subject: No Audio After Replacing G-Board; G-Board Date: February 2, 2001 Received From WRPC-AS May Not Be Compatible In TV. Symptom: (1510) G-boards received from WRPC-AS might not have the audio 5V regulator components mounted. In this case, the TV will have no audio. Solution: When ordering a G-board for the KV-32XBR200 or the KV-36XBR200 be sure to also order the parts listed below! The solution depends on the 2-digit suffix of the printed-wiring version silkscreened on one corner of the G-board received from WRPC-AS. For printed-wiring versions 1-671-380-21 and lower follow procedure # 1. For printed-wiring versions 1-671-380-22 and higher follow procedure # 2. REF DESCRIPTION PART NUMBER IC651 IC, BA05T 8-759-450-47 R651 RESISTOR 33 OHM, 5%, 3 WATT 1-215-908-00 - HEATSINK FOR IC651 REUSE FROM ORIGINAL BOARD - SCREW W/ WASHERS REUSE FROM ORIGINAL BOARD - HEATSINK COMPOUND OBTAIN LOCALLY Procedure # 1 (for printed-wiring versions 1-671-380-21 and lower): 1- Install the heatsink for IC651. Apply heatsink compound to the heatsink. 2- Install IC651 and R651, then install board in set and check for normal operation. Procedure # 2 (for printed-wiring versions 1-671-380-22 and higher): 1- Refer to illustration # 2 on the last page. Very carefully use a razor knife to cut the printed-wiring pattern as shown in the drawing. Make sure there is at least 0.5 mm space between the patterns after they are cut. 2- Measure the resistance between pins 4 and 5 of connector CN642 to make sure the pattern was cut completely. The resistance should initially be about 3 megohms, rising to infinity ohms. A low resistance, or 0 ohms, indicates that the pattern was not completely cut. Continued on next page... Reference: VEA Engineering