Sony CAR0393 free download

File name CAR0393.PDF

Car Stereo CSA-14 Service Bulletin Sony Service Company - Technical Services A Division of Sony Electronics Inc. Sony Drive, Park Ridge, New Jersey 07656 Model: EXR-15, XR-2500 No. 393 Subject: Improving Display Readability. Date: April 4, 1996 Symptom: (13) The display may be difficult to read under some conditions in certain installations. Solution: If the customer complains of this problem, implement the countermeasures shown below. Please note that the specific countermeasures are dependant upon the serial number of the unit being repaired. REF FORMER NEW DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER 9 PLATE, LIGHT 3-909-885-01 PLATE, LIGHT 3-935-089-01 GUIDE GUIDE R373 RESISTOR, 15 1-249-395-11 RESISTOR, 10 1-249-393-11 OHM OHM R374 RESISTOR, 47 1-249-401-11 RESISTOR, 10 1-249-393-11 OHM OHM R372 RESISTOR, 47 1-249-401-11 NONE (OLD OHM MCB) R372 RESISTOR, 12 1-249-394-11 0 OHM (NEW OHM JUMPER WIRE MCB) Procedure A (for EXR-15 up to serial number 500900 and XR-2500 up to serial number 525300): 1- Replace the light guide assembly, ref. 9 with an improved type. 2- Change R373 from 15 ohms to 10 ohms. 3- Change R374 from 47 ohms to 10 ohms. (Continued) 4- Remove R372 (there is no marking on the board for this resistor. It is mounted to the same feedthroughs as R374, but on the opposite side of Reference: Technical News ME-95028 Revised PRINTED IN USA PRINTED ON RECYCLED PAPER Car stereo Products Service Bulletin No. 393 the board). Procedure B (for EXR-15 serial number 500901 and higher and XR-2500 serial number 525301 and higher): 1- Replace the light guide assembly, ref. 9 with an improv