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TV Products CSV-1
Service Bulletin
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656


Model: KP-41T15, -46S15, -53S15, -46V25, -53V25 No. 291R1
KP-61V25, -53XBR45, -61XBR48

Subject: Circuit Change-Reference Number R854, R859 Date: May 15, 1996
On The "E" Board


Symptom:
(111) The values of resistors R854 and R859 have been changed. These resistors should
be changed regardless of the symptom.

Note: Please also refer to related Service Bulletin, TVP 0281R2.

Parts List: This service bulletin requires the following components:

DESCRIPTION PART NUMBER Q'TY
1 OHM, 1/2W, RESISTOR 1-260-292-11 1
0.47 OHM, 1/2 W, RESISTOR 1-260-288-11 1
10MF/160V 1-107-636-11 1



Solution: Please check model name and serial number on the chart below for proper circuit
change process.

Circuit Change -1 Circuit Change -2 Circuit Change -3
Model Name Serial Number Serial Number Serial Number

KP-41T15 9000001 ~ 9015000 9015001 ~ 9021000 9021001 ~
KP-46S15 9000001 ~ 9011000 9011001 ~ 9018500 9018501 ~
KP-53S15 9000001 ~ 9007000 9007001 ~ 9011500 9011501 ~
KP-46V25 9000001 ~ 9003000 9003001 ~ 9005700 9005701 ~
KP-53V25 9000001 ~ 9004000 9004001 ~ 9006500 9006501 ~
KP-61V25 9000001 ~ 9001900 9001901 ~ 9003800 9003801 ~
KP-53XBR45 9000001 ~ 9005000 9005001 ~
KP-61XBR48 9000001 ~ 9001000 9001001 ~

Cont.


Reference: SB T Noguchi PRINTED IN USA
Autoflagged - YES
PRINTED ON RECYCLED PAPER
TV Products Service Bulletin No. 291R1




Circuit Change -1:

a. R859 was not mounted on E board originally. Therefore, you are required to
cut the foil pattern on the CR Board between CN702/pin 7, and CN703/pin 7,
then mount R859 as illustrated in Fig 1 & 2.

b. Replace R854 on the "E" Board with the value below.

c. Replace C808 even if it seems OK. Same value and part number as original.

REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER
R854 1 OHM, 1/4W 1-249-381-11 1 OHM, 1/2W 1-260-292-11
R859 NONE NONE 0.47 OHM, 1/2W 1-260-288-11
C808 10MF/160V 1-107-636-11 10MF/160V 1-107-636-11




Fig.1 Fig.2
Circuit Change 2:
Replace both R854 and R859 with the values below. Also replace C808 even if it
seems OK. Same value and part number as original.

Note: If R859 is a jumper wire, please replace it with a 0.47 ohm resistor.

REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER
R854 1 OHM, 1/4W 1-249-381-11 1 OHM, 1/2W 1-260-292-11
R859 1 OHM, 1/4W 1-249-381-11 0.47 OHM, 1/2W 1-260-288-11
C808 10MF/160V 1-107-636-11 10MF/160V 1-107-636-11


Cont.
TV Products Service Bulletin No. 291R1


Circuit Change 3:

Replace R854, and R859 with the values below. Also replace C808 even if it seems
OK. Same value and part number as original.

REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER

R854 1 OHM, 1/4W 1-249-381-11 1 OHM, 1/2W 1-260-292-11
R859 JUMPER WIRE N/A 0.47 OHM, 1/2W 1-260-288-11
C808 10MF/160V 1-107-636-11 10MF/160V 1-107-636-11